-
Raymond Volkas (The University of Melbourne)17/04/2026, 08:40
I will describe the VISHnu model, which is a DFSZ axion-majoron model variant with the following features: (a) No cosmological domain wall problem, thus permitting a post-inflationary axion. (b) Identification of the Peccei-Quinn breaking scale with the type-I seesaw scale, thus explaining the tiny neutrino masses. (c) Baryogenesis via leptogenesis. (d) Successful inflation driven by a...
Go to contribution page -
Prof. Michael Ramsey-Musolf17/04/2026, 09:10
-
Xin-Qiang Li (Central China Normal Univerisy)17/04/2026, 09:40
With the steady running of the LHCb and Belle II experiments, as well as the precision achieved from Lattice QCD for non-perturbative hadronic parameters, we are entering the era of precision flavor physics. In this talk, I will introduce the role played by flavor physics in precisely testing the Standard Model and indirectly probing physics beyond it. Then, I will give some examples to...
Go to contribution page -
Fu-Sheng Yu (Lanzhou University)17/04/2026, 10:10
The first observation of CP violation in baryon decays in last year is a historic milestone for particle physics. This talk summarizes theoretical progress in the field, highlighting the accurate predictions preceding the discovery and discussing subsequent developments.
Go to contribution page -
Haijun Yang (Shanghai Jiao Tong University (CN))17/04/2026, 11:00
-
Xiaofeng Luo (Central China Normal University)17/04/2026, 11:30
-
Kun Liu (TDLI / SJTU)17/04/2026, 12:00
Measurements of the Higgs boson production in association with top quarks provide a direct probe of the Higgs-top Yukawa coupling, a key parameter in the Standard Model. This talk presents the latest ATLAS results on ttH and tH production using the full Run 2 dataset of 140 fb⁻¹ at √s = 13 TeV, with a focus on the multi-lepton final state. The measured ttH signal strength is σ_ttH/σ_SM =...
Go to contribution page -
效军 毕 (中科院高能所)17/04/2026, 13:30
Despite decades of intensive direct detection searches across different dark matter candidates, no conclusive particle signal has been identified. This motivates complementary constraints on dark matter properties model independently from astronomical observations. In this talk, we focus on wave-like ultralight dark matter (ULDM) and its dynamical impact on dwarf galaxies. We will show that...
Go to contribution page -
Lei Wu (Nanjing Normal Univeristy)17/04/2026, 14:00
-
Wei Ji (Peking University)17/04/2026, 14:30
Due to their high spin density and low spin projection noise, ferromagnetic systems are expected to be powerful tools for high-precision metrology. This presentation will discuss our recent investigations into physics beyond the Standard Model, utilizing ferromagnetic spins as a platform."
Go to contribution page -
Yanlin(彦麟) Liu(刘)17/04/2026, 14:55
The talk will present the latest highlights and summary of di-Higgs studies from ATLAS and CMS experiments at the LHC.
Go to contribution page -
Aldo Deandrea (University Lyon 1)17/04/2026, 15:40
We present the idea of asymptotic grand unification, where the gauge couplings run to a unique fixed point in the ultraviolet, thanks to the presence of a compact extra dimension and to a specific choice group structure and multiplet content. We introduce a minimal model based on a SU(5) gauge theory but also discuss SO(10) and other generalisations, giving also few results on the expected...
Go to contribution page -
Borut Bajc17/04/2026, 16:10
The phenomenon of symmetry non-restoration goes back to Weinberg around
Go to contribution page
50 years ago: some systems may exhibit spontaneous symmetry breaking at
large temperature. Only recently however this same behavour has been found
in UV complete models, being previous examples only effective theories with
a UV cutoff. I will describe such a UV complete model both at large and
finite number of colours. -
Ye-Ling Zhou (HIAS-UCAS)17/04/2026, 16:40
Asymptotic unification, distinct from the conventional concept of unification, suggests that couplings unify at a non-trivial ultraviolet (UV) fixed point. Theory with an interacting UV fixed point is normally referred to as asymptotic safety to address the famous UV Landau pole problem. Alternative to a usual grand unified theory (GUT), an asymptotic GUT gradually unifies gauge couplings in...
Go to contribution page -
Fei Wang (Zhengzhou University)17/04/2026, 17:05
We propose to discuss the modular flavor model and the stabilization of single modulus field in the Jordan frame supergravity with non-minimal scalar-curvature coupling of the form $\Phi(\tau,\bar{\tau})R$. Modular invariance and positivity of the scale factor constrain stringently the form of the frame function, consequently the Kahler potential. We discuss some general properties of scalar...
Go to contribution page -
Yun-Long Zhang (NAOC)17/04/2026, 17:40
Axions and axion-like particles can be probed through gravitational waves indirectly, often referred to as “audible axions”. The usual concept of audible axion relies on the coupling between the axions and the gauge fields. Here we consider an axion-like mechanism with coupling to the Nieh–Yan term. This interaction leads to the direct and efficient production of gravitational waves during the...
Go to contribution page -
Prof. Junmou Chen (Jinan University)17/04/2026, 17:40
Based on the general principles of Lorentz symmetry and unitarity, we introduce two consistency conditions -- on-shell gauge symmetry and strong massive-massless continuation -- in constructing amplitudes of massive gauge theory with elementary particles. In particular we argue that on-shell gauge symmetry can be understood as a consequence of Lorentz symmetry, unitarity and...
Go to contribution page -
Zhong Zhang (Southeast University)17/04/2026, 17:40
Self-interacting neutrinos are well-motivated particles in order to solve problems such as Hubble tension in cosmology. Neutrino-philic scalars, such as flavons and Majorons, can be solutions to BSM puzzles, such as lepton number and lepton flavour violations. New muon decay channels (e.g. µ → eϕ, µ → eϕϕ) will be introduced by neurtino-scalar couplings and µ → eνν will have additional...
Go to contribution page -
Sasha Tomalak (Institute of Theoretical Physics, Chinese Academy of Sciences)17/04/2026, 17:40
We compute electromagnetic radiative corrections in the inverse beta decay at reactor antineutrino energies within the heavy baryon chiral perturbation theory, provide the most accurate cross-section predictions for this process, and present a complete error budget. For the first time, we consistently include quantum electrodynamics, chromodynamics, and electroweak contributions and present...
Go to contribution page -
Dr Cong(聪) Zhang(张) (中国科学院理论物理研究所)17/04/2026, 17:55
In this talk, I discuss parton evolution effects in the framework of cosmic-ray boosted dark matter. When dark matter particles are accelerated by high-energy cosmic rays, the large hierarchy between the scattering scale and the dark-sector masses can induce a dark parton shower. At high-threshold detectors, a similar hierarchy in the DM–electron scattering process leads to collinear...
Go to contribution page -
Prof. Hai-Bin Zhang (Hebei University)17/04/2026, 18:05
Embed in Grassmannians, we can obtain the analytical hypergeometric function representation of multi-loop Feynman integrals with masses. We can make the classification among those hypergeometric function solutions by geometric configurations, and generalize Gauss relations among the hypergeometric functions to complete analytic continuation of the solutions. This method can be applicable to...
Go to contribution page -
阳 张 (河南师范大学)17/04/2026, 18:05
For feebly interacting massive dark matter particle (FIMP) dark matter, variations in particle mass during cosmological phase transitions can affect the dark matter production mechanism. Meanwhile, reheating, entropy injection, and phase coexistence during phase transitions, especially supercooled phase transitions, also influence the evolution of dark matter abundance to varying degrees. This...
Go to contribution page -
Wenyu Wang (Beijing University of Technology)17/04/2026, 18:05
Dark photons, which can kinetically mix with ordinary photons, represent
Go to contribution page
the simplest extension to the standard model. Detecting their
oscillations with visible photons could provide crucial insights into
the nature of dark matter and fundamental interactions beyond the standard model. We propose a novel laboratory-based approach to detect dark photon oscillations using a laser in an... -
Ruofei Feng (Southeast University)17/04/2026, 18:10
We focus on the detection of 5.5 MeV solar axions from the pp-chain via electron-positron pair production at the PandaX experiment. Previous work established the relation between axion and photon cross sections for massless axions. We verify this relation numerically in the massless limit. Then we compute the cross section for finite axion mass (< 1 MeV) and derive the corresponding mass...
Go to contribution page -
Bowen Hu (中国科学院大学杭州高等研究院)17/04/2026, 18:30
The possibility that a black hole catalyzes vacuum decay is an interesting and important topic both phenomenologically and theoretically. One of the issues is the choice of the vacuum state. To address it, we consider a (1+1)-dimensional toy model of a scalar field with inverted Liouville potential in an external background of a dilaton black hole. We study the decay of a general...
Go to contribution page -
Mr Yang Xiao (Henan Normal University)17/04/2026, 18:30
Cosmological first-order phase transitions are a well-motivated source of stochastic gravitational waves (GWs), but most predictions are made based on the highly idealized model of perfectly spherical vacuum bubbles, neglecting thermal fluctuations. In this work we use $(3+1)$-dimensional lattice simulations of a scalar model with thermal initial conditions to quantify how thermal fluctuations...
Go to contribution page -
Bohua Li (Guangxi University)17/04/2026, 18:30
-
Wan-Zhe Feng (Tianjin University)17/04/2026, 19:30
First-order phase transitions in hidden gauge sectors can generate stochastic gravitational wave backgrounds and provide a powerful new probe of dark sector physics. In this talk, I will present a gauge-independent analysis of gravitational waves from a minimal dark U(1) sector containing a dark Higgs and a dark photon, with the option of an additional vectorlike dark fermion as a viable dark...
Go to contribution page -
Xiaohui Liu (Beijing Normal University)17/04/2026, 19:55
We present precision predictions for the quantum scaling of the post-confinement plateau of the energy-energy correlator (EEC). The analysis follows the light-ray operator product expansion (OPE) description of the near-side EEC, in which the plateau is controlled by the leading $J=5$ channel and its timelike anomalous dimension. We assess the impact of the plateau prediction on possible...
Go to contribution page -
chen feng (中国科学院大学)17/04/2026, 20:40
Cold dark matter may form dense structures around supermassive black holes (SMBHs), significantly influencing their local environments. These dense regions are ideal sites for the formation of extreme mass-ratio inspirals (EMRIs), in which stellar-mass compact objects gradually spiral into SMBH, emitting gravitational waves (GWs). Space-based gravitational-wave (GW) observatories, such as LISA...
Go to contribution page -
zhen cao (中国科学院高能物理研究所)18/04/2026, 08:30
-
Jianglai Liu (Shanghai Jiao Tong University)18/04/2026, 09:00
-
Yufeng Li (Institute of High Energy Physics)18/04/2026, 09:30
-
Prof. Donglian Xu (T D Lee Institute)18/04/2026, 10:00
-
Hong-Jian He (TDLI & SJTU)18/04/2026, 10:50
-
Jiang-Hao Yu18/04/2026, 11:20
-
Roman Pasechnik (Lund University)18/04/2026, 11:50
Confining dark sectors offer a minimal and predictive route to composite dark matter (DM). I connect nonperturbative glueball physics to cosmological evolution and to laboratory searches. Using lattice-calibrated thermodynamics, we revisit the relic abundance of stable scalar glueballs and show that strong-coupling effects can shift standard abundance estimates by up to an order of magnitude,...
Go to contribution page -
Jia Liu (Peking University)18/04/2026, 13:30
-
Qiang Yuan (Purple Mountain Observatory)18/04/2026, 14:00
Precise measurements of energy spectra of cosmic rays are crucial to understanding the physics of cosmic rays. New progresses of measurements of the Galactic cosmic ray spectra by DAMPE and LHAASO will be introduced. The physical implications of these new measurements will be discussed.
Go to contribution page -
Manqi RUAN (Institute of High Energy Physics, Beijing, China)18/04/2026, 14:30
-
Haibo Yu (University of California, Riverside)19/04/2026, 08:15
-
Xu Feng19/04/2026, 08:45
-
Tao Liu (HKUST)19/04/2026, 09:15
-
Bo Feng (South China Normal University (SCNU))19/04/2026, 10:00
In various physical situations, we need to do various integration. In this talk I will present recent developments how to do these integrations efficiently.
Go to contribution page -
Tianjun Li (Henan Normal University)19/04/2026, 10:30
The quantum entangled state, which does not violate the Bell non-locality, can violate the Bell non-locality due to the super-activation. Thus, the quantum entanglement is indeed one of the most important properties of quantum mechanics, i.e., Truth of Nature. We shall propose the quantum entanglement theory from mathematical point of view, i.e., Beauty of Theory. For pure states, considering...
Go to contribution page -
Yang Zhang (University of Science and Technology of China)19/04/2026, 11:00
With the development on differential equations and computational algebraic geometry methods, the era of analytic computation of multi-loop multi-leg Feynman integrals is coming. We analytically computed all 2loop 6point and 3loop 5point planar massless Feynman integrals. This is a mile stone of analytic feynman integral computation. Furthermore, based on analytic Feynman integrals, we present...
Go to contribution page -
Craig Roberts19/04/2026, 11:30
Visible matter is characterised by a single mass scale; namely, the proton mass. The proton’s existence and structure are supposed to be described by quantum chromodynamics (QCD), the strong interaction part of the Standard Model; yet, absent Higgs boson couplings, chromodynamics is scale-invariant. Thus, if the Standard Model is truly a part of the theory of Nature, then the proton mass is an...
Go to contribution page -
Fei Gao19/04/2026, 12:00
-
宗国 司 (山东大学物理学院)19/04/2026, 13:30
-
Yongchao Zhang (Southeast University)19/04/2026, 14:00
We investigate the photons from the decay of axion-like particles, produced in the solar activity. The nontrivial geometry indicates a wide angular distribution of these photons, which can even come from directions which deviate significantly from the direction of the sun. We consider some detection setups including space and terrestrial experiments in the pole region. There is a critical...
Go to contribution page -
Fa Peng Huang (Sun Yat-sen University)19/04/2026, 14:30
-
Shuang-Yong Zhou (University of Science and Technology of China)19/04/2026, 14:55
-
Yiming Zhong19/04/2026, 15:20
The Galactic Center Gamma-Ray Excess (GCE) remains one of the most intriguing puzzles in astrophysics, with leading interpretations including dark matter annihilation and an unresolved population of millisecond pulsars. In this talk, I present two complementary studies on the GCE morphology. First, I show that the GCE morphology is robust against variations in point source and galactic disk...
Go to contribution page -
Yong Tang (University of Chinese Academy of Sciences)19/04/2026, 15:45
-
Chengfeng Cai (Sun Yat-sen University)19/04/2026, 16:30
Leptophilic dark matter offers a well-motivated framework in which conventional nuclear-recoil limits can be strongly suppressed, while viable parameter space remains testable through astrophysical observations. In this talk, I will present a study of scalar leptophilic dark matter in a gauged $\mathrm{U(1)}_{L_\mu-L_\tau}$ extension of the Standard Model, including secluded and...
Go to contribution page -
Qite Li (Peking University)19/04/2026, 16:30
本报告将介绍了基于缪子散射的科学研究项目PKMu (Probing and Knocking with Muons)及其近期进展, 该项目旨在利用缪子探索超越标准模型的潜在物理现象. 在缪子散射探测暗物质研究中, 项目利用阻性板气体室等高精度缪子径迹探测器, 建立宇宙射线缪子散射实验平台, 开展了为期63天直接探测实验, 通过详细的宇宙射线散射模拟与实测对比, 揭示了宇宙射线多组分对散射信号的贡献, 对缪子和低速暗物质的散射截面给出实测限制; 在缪子散射对暗玻色子与带电轻子味破坏的研究中, 结合高原子序数靶材和缪子-电子散射的实验设计, 模拟结果展现出在亚GeV质量区间及独立参数空间探索中的独特优势. 此外, 对缪子-电子散射中的量子纠缠与Bell不等式进行了模拟分析, 模拟结果显示在GeV能区具备良好的观测条件. 未来, 也将在国内国际缪子源上进行更深入的缪子散射研究....
Go to contribution page -
Xiang Xiao (Sun Yat-sen University)19/04/2026, 16:30
Liquid xenon experiments have advanced dark matter direct detection. While traditionally focused on keV-scale signals, the MeV region also offers rich information for studying neutrinos and dark matter. The PandaX-4T experiment at the China Jinping Underground laboratory uses 3.7 tons of natural xenon. We have developed a dedicated data analysis framework extending its energy range to the MeV...
Go to contribution page -
Prof. Ke-Pan Xie (Beihang University)19/04/2026, 16:30
-
Cai-Chang Li (西北大学)19/04/2026, 16:55
Working within the reference three-neutrino mixing framework, we confront the lepton mixing predictions derived using non-Abelian discrete flavour and CP symmetries with the first JUNO data on the solar neutrino mixing parameters $\sin^2\theta_{12}$
Go to contribution page
and with the results of the latest global neutrino data analysis. We focus on symmetry breaking patterns for which the lepton PMNS mixing matrix... -
Jingwei Lian (Henan Institute of Science and Technology)19/04/2026, 16:55
Recent CMS analyses report an excess in the diphoton-plus-b ̄b channel, indicative of a heavy resonance around 650GeV decaying into a Standard Model (SM)-like Higgs boson and a lighter scalar near 95GeV. The case for a 95GeV state is further supported by diphoton excesses observed by both CMS and ATLAS, as well as a b ̄b excess previously observed at the Large Electron-Position collider. This...
Go to contribution page -
Wei Liu (Nanjing University of Science and Technology)19/04/2026, 16:55
-
Hong-Yi Zhang19/04/2026, 16:55
Ultralight dark photons can form stable, compact clumps that possess macroscopic coherence, called solitons. When two such solitons collide and merge, the merged object can suddenly convert its stored dark-sector energy into ordinary radio photons through a process called parametric resonance. The merger rate scales steeply with local soliton number density (merger rate ∝ density²), so regions...
Go to contribution page -
Chen Sun (ICTP, Trieste)19/04/2026, 17:10
Many well-motivated UV theories contain bonsonic light degrees of freedom, which can exhibit various wave-like behaviors at low energy. This leads to many new ideas and novel observables in recent years to probe new physics in astrophysical and laboratory setups alike. In this talk, I will briefly review a few examples in leveraging the wave-like features to test axions and ultralight dark...
Go to contribution page -
Supriya Senapati (Nanjing University of Science and Technology)19/04/2026, 17:20
The ordering of neutrino masses remains an open question in particle physics. While upcoming oscillation experiments aim to resolve this using low-energy probes, complementary approaches are needed to test neutrino mass generation more broadly. In this talk, I will show how high-energy collider experiments can provide such a probe within the minimal Type-I seesaw framework. Focusing on a...
Go to contribution page -
Wei Su (SYSU)19/04/2026, 17:20
In this work we study the prospect of detecting light scalars at the FASER. We develop the general formalism for the scalar production and decay from mesons at LHC, given modified couplings of the scalars to the SM particles, as well as summarizing the relevant GeV-scale experiment constraints. We then analyze the reaches of light scalars in the large $\tan\beta$ region of the Type-I 2HDM,...
Go to contribution page -
Xuewen Liu (Yantai University)19/04/2026, 17:20
The neutrino floor, a theoretical sensitivity limit for dark matter direct detections, is being redefined as the boundary of a dynamic ``neutrino fog", where neutrino signals become inevitable, obscuring DM detection due to the statistical and systematic uncertainties. This study provides the first site-specific analysis of the neutrino floor at China Jinping Underground Laboratory (CJPL),...
Go to contribution page -
Dr Jiang Zhu (TDLi institution)19/04/2026, 17:25
We studied a crucial but often oversimplified ingredient in predicting gravitational-wave signals from QCD-type phase transitions: the kinetic term of the Polyakov loop. For the first time, we derive this term from first principles in finite-temperature pure SU(3) Yang-Mills theory, incorporating a field-dependent renormalization factor—a calculation we also extend to theories with more...
Go to contribution page -
Chikako Idegawa (Sun Yat-sen University)19/04/2026, 17:35
-
Mohamed Younes Sassi (Tsung-Dao Lee Institute, Shanghai Jiao Tong University)19/04/2026, 17:40
Extended Higgs sectors such as the 2HDM and N2HDM provide new discrete symmetries, which, upon spontaneous symmetry breaking, can lead to the formation of topological defects called domain walls. In this talk, I discuss some consequences of these domain walls on the early universe, such as electroweak symmetry restoration necessary for Electroweak baryogenesis via domain walls, as well as the...
Go to contribution page -
YONGHENG XU19/04/2026, 17:45
LUX-ZEPLIN (LZ) is a dark matter direct detection experiment, operating deep underground at the Sanford Underground Research Facility (SURF), USA. Utilizing a 7-tonne dual-phase xenon time projection chamber in conjunction with a robust veto system, LZ aims to primarily detect Weakly Interacting Massive Particles (WIMPs), one of the most promising dark matter candidates. Currently, LZ provides...
Go to contribution page -
Haolin Li (Sun Yat-Sen University)19/04/2026, 17:45
The infrared structure of gauge theories with chiral fermions remains largely unexplored. In this work we investigate the Bars--Yankielowicz class using the functional renormalisation group, building on recent developments in gauge--fermion systems that provide clear criteria for confinement and dynamical symmetry breaking.
Go to contribution page
We show that two distinct phases arise: one exhibiting both... -
Aidi Yang19/04/2026, 17:55
We investigate the capability of TianQin and LISA to reconstruct the model parameters in
Go to contribution page
the Lagrangian of new physics scenarios that can generate an electroweak SFOPT. Taking the dimension-six Higgs operator extension of the Standard Model as a representative scenario for a broad class of new physics models, we establish the mapping between the model parameter Λ and the observable spectral... -
Jun Wang (Westlake University)19/04/2026, 18:05
Exhibiting the largest cross-section of all interaction channels for MeV neutrinos, coherent elastic neutrino-nucleus scattering (CEvNS) offers a compelling pathway for the remote monitoring of nuclear reactors. Liquid xenon time projection chambers (LXeTPCs) have emerged as an ideal technology for CEvNS detection, primarily due to their low backgrounds and energy thresholds. The RELICS...
Go to contribution page -
Takaaki Nomura (Sichuan University)19/04/2026, 18:05
In this talk, we discuss two Higgs doublet models in which a new U(1) gauge symmetry is introduced. We investigate if these models are allowed by current phenomenological data without introducing a scalar field except for two Higgs doublet ones. We find they are excluded by constraints from scalar boson decays associated with new gauge boson Z'. Then a dark vector-like fermion is introduced to...
Go to contribution page -
Tingyu Li (Tsinghua University)19/04/2026, 18:10
Inspired by string theory and cosmological constant problem, it is plausible that the Universe’s vacuum structure is characterized by a landscape of metastable vacua. If the dark vacuum is metastable, bubbles of lower-energy phases can nucleate at an approximately constant rate. Because the Hubble expansion rate is monotonically non-increasing with cosmic time, such nucleation can eventually...
Go to contribution page -
雨轩 何 (City University of Hong Kong)19/04/2026, 18:20
The observations of ultra-dense substructures in strong lensing systems challenge the standard
Go to contribution page
cosmology model at small scales. Self-interacting dark matter (SIDM), as one of the alternatives
to the cold collisionless dark matter (CDM) of the standard cosmology model, provides a natural
mechanism for forming such structures via gravothermal core-collapsing. We show that strong... -
Ruiwen Ouyang (HIAS, UCAS)19/04/2026, 18:25
In this talk, we will present a supersymmetric Pati-Salam model with only small representations as a potential candidate for physics beyond the Standard Model. The model features a Higgs sector with bifundamental fields $H_R+\bar H_R=(4,1,2)+(\bar 4,1,2)$, $H_L+\bar H_L=(4,2,1)+(\bar 4,2,1)$ as well as a pair of bi-doublet fields $h_a=(1,2,2)$ where $ a=1,2$, with three families of fermions...
Go to contribution page -
Haibin Chen19/04/2026, 18:25
Supercooled phase transitions have attracted significant interest as potential sources of strong, low-frequency gravitational wave signals detectable by Pulsar Timing Arrays (PTAs). A nucleation temperature $T_n$ is often used to characterize the onset of the transition, defined by a threshold on the nucleation rate. However, in the regime of ultra-low nucleation rates, $T_n$ may not exist,...
Go to contribution page -
Christina Gao19/04/2026, 19:30
-
可平(Keping) 谢(Xie) (李政道研究所)19/04/2026, 19:55
We propose using current and future large-volume neutrino telescopes as "Large Neutrino Colliders" (L$\nu$Cs) to explore TeV-scale physics beyond the Standard Model. Cosmic neutrinos with energies above 100 PeV colliding with nucleons in the detector reach center-of-mass energies beyond the 14 TeV limit of the Large Hadron Collider (LHC). Using recently predicted and measured high-energy and...
Go to contribution page -
Prof. Alberto Salvio (University of Rome and INFN Tor Vergata)19/04/2026, 20:35
First-order phase transitions produce gravitational waves and primordial black holes. They always occur in field theories where symmetries are radiatively broken and masses are correspondingly generated. These theories predict a period of supercooling: phase transitions become effective at temperatures much smaller than the symmetry-breaking scale. I will discuss a model-independent approach...
Go to contribution page -
Tucker Manton (HIAS UCAS)19/04/2026, 21:05
A tantalizing hint of beyond Standard Model (SM) physics lies in the polarization structure of the CMB. Joint analysis of WMAP, Planck, and ACT data suggests that the linear polarization plane of CMB photons has, since the surface of last scattering, rotated by an angle β ~ 0.3 degrees at over 4.5 σ significance. This is a parity violating phenomenon that can't be described using SM degrees of...
Go to contribution page -
EUNG JIN Chun (Korea Institute for Advanced Study)20/04/2026, 08:15
Type-I seesaw models with a spontaneously broken B−L symmetry provide a natural framework for spontaneous leptogenesis driven by a Majoron. The kinetic background of the Majoron acts as a CP-violating source, generating a lepton asymmetry both through the decay of right-handed neutrinos and through equilibration via inverse-decay processes. We construct the Boltzmann equations in a fully...
Go to contribution page -
Frank Deppisch (University College London)20/04/2026, 08:45
-
Xian-Wei Kang (Beijing Normal University)20/04/2026, 09:15
The study of semileptonic decay plays an important role in extracting the CKM matrix element, where the relevant form factor encodes the nontrivial strong interaction dynamics. We will overview the current achievements on the semileptonic decay, especially from the viewpoint from the relativistic quark model. The observables such as branching fraction, forward-backward asymmetry and...
Go to contribution page -
Yue Zhao (HKUST)20/04/2026, 10:00
This talk will focus on how gravitational-wave experiments can help probe dark matter candidates. The first part will demonstrate how data from the LIGO-Virgo-KAGRA Collaboration can be leveraged to distinguish between annihilating weakly interacting massive particles and a population of millisecond pulsars as the source of the long-standing GeV gamma-ray excess at the Galactic Center. I will...
Go to contribution page -
Anna Tokareva (Hangzhou Institute for Advanced Study)20/04/2026, 10:25
The effective field theory (EFT) concept provides a necessary tool for obtaining general predictions of low-energy theory valid below its unitarity-breaking scale (cutoff scale). Early Universe inflation and subsequent reheating could be a unique setup for testing potentially observable effects coming from the derivative expansion of the corresponding EFT around the flat space vacuum. In this...
Go to contribution page -
Chengcheng Han (Sun Yat-sen university)20/04/2026, 10:50
Cosmological Collider Signals from Right-Handed Neutrino Loops
Go to contribution page -
Ningqiang Song (Institute of Theoretical Physics, Chinese Academy of Sciences)20/04/2026, 11:15
Supernova cooling provides a powerful probe of physics beyond the Standard Model (SM), in particular for new, light states interacting feebly with SM particles. Unlike previous supernova studies focusing on annihilation or bremsstrahlung, we identify neutrino-initiated conversion as a dominant and previously unexplored production channel for fermionic dark matter (DM) via the...
Go to contribution page -
Kohei Kamada (HIAS UCAS)20/04/2026, 11:40
In the conventional turbulence studies, it has been revealed that inverse cascades driven by conserved quantities integrated over the entire space, such as helicity in three spatial dimensions
Go to contribution page
On the other hand, in terms of the higher-from symmetry, we are getting to know that there are also conserved charges are defined by integration over subspaces.
In this talk, I will demonstrate a new... -
Fei Teng (Fudan University)20/04/2026, 12:05
The detection of gravitational waves has created a pressing need for high-precision theoretical models for binary systems. In this talk, I will review recent progress in the analytic computation of physical observables for binary black hole and neutron star systems using modern on-shell methods. I will focus on how the on-shell methods, which focus directly on gauge-invariant observables,...
Go to contribution page -
Gang Li (Sun Yat-sen University)20/04/2026, 13:30
Coherent elastic neutrino-nucleus scattering (CEνNS) is critical for testing the Standard Model electroweak sector, exploring neutrino properties, and searching for new physics (NP), with recent experiments (e.g., COHERENT, CONUS+, PandaX-4T, XENONnT) highlighting the need for a systematic theoretical framework. We have constructed a comprehensive end-to-end effective field theory (EFT)...
Go to contribution page -
Yoshiki Uchida (South China Normal University)20/04/2026, 13:30
We investigate a cogenesis scenario for composite asymmetric dark matter framework: a dark sector has a similar strong dynamics to quantum chromodynamics in the standard model, and the dark-sector counterpart of baryons is the dark matter candidate. The Hawking evaporation of primordial black holes plays the role of a source of heavy scalar particles whose CP-violating decay into quarks and...
Go to contribution page -
驰 田 (安徽大学)20/04/2026, 13:30
When strongly supercooled cosmological first-order phase transitions (FOPTs) are sufficiently slow, super-horizon inhomogeneities can be generated. We compute these super-horizon curvature perturbations by employing a gauge-invariant, multi-fluid formalism. By resolving the gauge ambiguities inherent in conventional separate-universe simulations, we demonstrate that Primordial Black Holes are...
Go to contribution page -
Dr Minyuan Jiang (Nanjing Normal University)20/04/2026, 13:30
We derive the shockwave metric in four-dimensional Einstein--Maxwell effective field theory (EFT) by performing an ultra-relativistic boost of the charged black hole solution accompanied by a rescaling of its mass and charge, including leading order EFT corrections. In contrast to the neutral (Schwarzschild) case, where higher derivative operators leave the shockwave geometry unchanged, we...
Go to contribution page -
Takumi Kuwahara (Peking U)20/04/2026, 13:45
We investigate the direct detection constraint on the composite asymmetric dark matter (ADM), where the confining gauge dynamics realized in the dark sector. The dark baryonic matter is the dark matter candidate, in particular it is similar to our baryons when we assume the SU(3) dark QCD in the dark sector. In addition, the dark sector is connected to the standard model sector through the...
Go to contribution page -
欣辰 段 (中国科学院紫金山天文台)20/04/2026, 13:55
Inelastic self-interacting dark matter (iSIDM) provides a well-motivated extension of the cold dark matter paradigm, featuring multiple internal states connected by inelastic conversion processes. In this presentation, I will present a linear-cosmology framework for iSIDM, starting from a model-independent microphysical parameterization of the inelastic cross section and deriving the...
Go to contribution page -
Lingfeng Li20/04/2026, 13:55
The reionization optical depth $\tau_{\rm reio}$ has interesting connections to existing cosmological anomalies. As first studied in the context of the Hubble tension in our previous paper, a larger $\tau_{\rm reio}$, which could be achieved by removing the Planck low-$\ell$ polarization data, could boost $H_0$ slightly, resulting in a mild reduction of the tension between the early- and...
Go to contribution page -
jinlei yang (Hebei University)20/04/2026, 13:55
The hierarchy problem between the electroweak (EW) scale and the Planck scale remains a central puzzle in modern physics. A promising approach is the cosmological selection via volume-weighted dynamics in a multiverse landscape, where the EW scale is dynamically selected as the configuration that maximizes the vacuum energy. We propose a two-step cosmological selection (TCS) mechanism. By...
Go to contribution page -
许 武龙20/04/2026, 14:00
In this work we consider the scattering between non-relativistic particles with different finite sizes. We first calculate their interaction potential and apply the partial wave method to obtain their scattering cross section. Our findings show that the particle size can significantly affect the scattering between non-relativistic particles. Then we apply such a study to direct detection of...
Go to contribution page -
Yi Chung (IBS, CTPU-PTC)20/04/2026, 14:10
There are many reasons to believe in the existence of a strongly coupled dark sector. One of them is the observed similarity between the energy densities of dark matter and baryons, known as the dark matter–baryon coincidence problem. In this talk, I will explain why this comparability points toward an asymmetric strongly coupled dark sector at the QCD scale. I will further discuss...
Go to contribution page -
Zihao Guo (School of physics, Southeast University)20/04/2026, 14:15
We did a full simulation of sensitivity reach of $U(1)_{B-L}$ gauge boson with the contribution of a light scalar. We consider a minimal extension of the standard model with a $U(1)_{B-L}$ gauge group.
Go to contribution page -
Yi-Song Lu20/04/2026, 14:20
Domain walls arise in various physical contexts, such as early universe phase transitions. Their interaction with the surrounding plasma determines their motion and the scaling behavior of the networks. We study the friction exerted by a thermal plasma on domain walls in the thin-wall regime using the ballistic approximation. The resulting friction, dependent on wall velocity and temperature,...
Go to contribution page -
Bowen Fu (Northeastern University, Shenyang)20/04/2026, 14:20
The spontaneous breaking of an $A_4$ flavour symmetry can lead to the formation of domain walls. We study this phenomenon in the scenarios of real and complex $A_4$ symmetric scalar theories and discover new kinds of domain walls, which we denote as ``oreo''-type composite domain walls and CP-violating domain walls.
Go to contribution page -
Dr Chuan-Yang Xing (China University of Petroleum (East China))20/04/2026, 14:25
We discuss how coherent scattering of dark matter with macroscopic targets can generate observable forces and lead to signals of equivalence principle violation. For dark matter masses around the eV scale, coherent enhancement in homogeneous or random materials opens new possibilities for torsion-balance experiments and related searches.
Go to contribution page -
Yisong Zhang (Tsinghua University)20/04/2026, 14:30
Searches for primordial non-Gaussianity (NG) has the potential to not only reveal the physics of cosmic inflation, but also the structure of fundamental interactions at the highest energies. The cosmological collider (CC) physics program exemplifies this possibility and demonstrates how searches for oscillatory NG can lead to mass-spin spectroscopy of extremely heavy states. Adopting an...
Go to contribution page -
Gabriele Ferretti (Chalmers University)20/04/2026, 15:00
We present a class of models of electro-weak symmetry breaking based on strongly coupled gauge theories. We discuss the requirements imposed by flavor and CP violation on the strong dynamics. All these models give rise to an ALP that is an interesting target for searches at the high luminosity run of LHC. We present its effective lagrangian and some of the current bounds.
Go to contribution page -
Teng Ma20/04/2026, 15:30
We present a UV-complete extension of the Standard Model based on the gauge group (SU(5)\times SU(3)c^{\prime}\times Sp(2){TC}^{\prime}\times SU(2)L\times U(1)_Y), which breaks in two steps to QCD and a technicolor sector. Three axions cancel the three (\theta)-terms. Small instantons from the confining (SU(3)_c^{\prime}) and (Sp(2){TC}^{\prime}) sectors generate axion potentials,...
Go to contribution page -
Huaike Guo (University of Chinese Academy of Sciences)20/04/2026, 15:55
I will discuss the recently released results on searches of physics beyond the standard model with LIGO-Virgo-KAGRA's most recent O1-O4a observing runs, including searches for cosmological first order phase transitions, cosmic strings, domain wall, primordial black holes, induced gravitational waves, and direct searches for dark matter, etc.
Go to contribution page -
Philipp Schicho (University of Geneva)20/04/2026, 16:20
The possibility that future gravitational-wave detectors could observe the relic background from a cosmological phase transition has triggered intense progress in the theoretical description of these events. A detection of such a signal would probe energy scales far beyond those accessible to particle colliders, providing insight into fundamental questions about the early Universe, including...
Go to contribution page -
Prof. Sichun Sun (Beijing Institute of Technology)20/04/2026, 16:50
Firstly, we briefly discuss how the hypothetical beyond-the-Standard-Model particle, the axion, can produce gravitational waves through several mechanisms. Then we present some of our recent proposals for detecting axions/gravitational waves, including cryogenic quantum transport technology, traditional spin systems, and specially engineered artificial magnetoelectric materials. We demonstrate...
Go to contribution page -
Peizhi Du (University of Science and Technology of China)20/04/2026, 17:15
The standard cosmological model (ΛCDM model) assumes adiabatic initial conditions for primordial density perturbations. However, many new physics scenarios can deviate from this assumption and predict isocurvature perturbations across a large range of scales. In this talk, I will discuss interesting features of gravitational waves induced by isocurvature perturbations. I will also show that...
Go to contribution page -
Pedro Schwaller (Mainz University)20/04/2026, 17:40
-
Wenyuan Ai (Tsung-Dao Lee Institute, Shanghai Jiao Tong University)20/04/2026, 18:05
In one of his final papers, Steven Weinberg, together with Raphael Flauger, asked whether gravitational waves (GWs) can be attenuated through their interactions with matter. They argued that no attenuation occurs, owing to a cancellation between graviton absorption and stimulated emission, as inferred from leading-order soft-graviton arguments.
In this talk, I revisit this reasoning and...
Go to contribution page -
Zhong-Zhi Xianyu (Tsinghua University)
There have been increasing activities recently in the studies of cosmological collider physics and cosmological correlators, attracting attentions from particle physics, observational cosmology, and amplitude communities alike. We will review some recent progress in this direction.
Go to contribution page -
Xinyu Du (SJTU)
Among the charged leptons, the τ electric dipole moment (dτ) is the least constrained. We show that the Im[dτ] imposes strong constraints on new physics that have yet to be discussed. Motivated in particular by the Super Tau-Charm Facility (STCF), which will provide a uniquely clean environment for precision τ-physics, we study the momentum-transfer dependence of dτ(q2) and compare the...
Go to contribution page -
Cheng-Hao Zhan (Beihang Univ.)
Beyond solving the hierarchy problem, classically conformal (CC) theories naturally accommodate dark matter (DM). In this work, we explore the CC $SU(2)_X$ gauge theory with a triplet dark scalar, uncovering three distinct DM scenarios: WIMP, supercooled DM, and monopole. The production mechanisms are strongly influenced by the CC model's unique first-order phase transition evolution history,...
Go to contribution page -
Haoyuan Liu (Tsinghua University)
It is widely believed that during inflation heavy particles (m ~ H up to 10^13 GeV) beyond the Standard Model can be produced and they can leave imprints on large cosmic scales. This mechanism provides a unique window to explore physics at extremely high energy scales—a paradigm known as cosmological collider (CC) physics. The central observables in CC physics are inflation correlators...
Go to contribution page -
Dr Chih-Ting Lu (Nanjing Normal University)
The diffusion of high-energy cosmic rays (CRs) through the dark matter (DM) spikes of active galactic nuclei entails significant energy loss via interactions with DM. While previous studies of sub-GeV DM have focused on elastic scattering, this process becomes insufficient at higher proton energies and DM masses. In this work, we investigate the CR-DM deep inelastic scattering (DIS) as...
Go to contribution page -
Di Wu (HIAS)
The generation of helical magnetic fields and associated chiral asymmetry via the chiral anomaly is a generic feature in pseudoscalar inflation models. In this talk, we explore a scenario where the inflaton $\phi$ is coupled to a gauged lepton flavor symmetry $U(1)_{L_\mu - L_\tau}$ through a Chern-Simons term $\frac{\alpha}{4f}\phi F \tilde{F}$.
The homogeneous evolution of the inflaton...
Go to contribution page -
Ms Wanyun Chen (Nanjing Normal University)
Poster
Go to contribution page -
Yi-huai Chen (Beijing Institute of Technology)
We investigate the phase structure of Quantum Chromodynamics (QCD) in the vacuum as a function of quark flavor number $N_f$ within the chiral limit. By self-consistently solving the coupled DSEs for the quark and gluon propagators in a minimal QCD scheme, we elucidate the nonperturbative dynamics governing dynamical chiral symmetry breaking. Our calculations determin a critical flavor number...
Go to contribution page -
Fu-Ming Chang (University of Science and Technology of China)
Electroweak boson scattering at the LHC provides a crucial avenue for probing physics beyond the Standard Model, particularly regarding deviations in quartic gauge couplings. We derive the complete set of positivity bounds for the $22$ dimension-$8$ anomalous quartic gauge coupling (aQGC) coefficients within the Standard Model Effective Field Theory (SMEFT). Moving beyond previous studies...
Go to contribution page -
Mei Huang (University of Chinese Academy of Sciences(UCAS))
-
Zhi-zhong Xing (Institute of High Energy Physics, Chinese Academy of Sciences)
A neutrino would be the Goldstone-like (massless) fermion if it had a translational symmetry, as first pointed out by D.V.Volkov and V.P. Akulov in their pioneering paper about supersymmetry in 1973. But it was R. Friedberg and T.D. Lee who first applied such a working symmetry to constraining the pattern of lepton flavor mixing in 2006. My talk is intended to explain why the Friedberg-Lee...
Go to contribution page -
Dr Jijun Yang (西湖大学)
Poster Abstruct
Go to contribution page
Precise measurement of Coherent elastic neutrino-nucleus scattering (CEvNS) is crucial for constraining the Standard Model and probing neutrino non-standard interactions. The Liquid Xenon Time Projection Chamber (LXeTPC) achieves enhanced signal amplification and lower energy thresholds, making it an ideal technology for CEvNS detection. The RELICS experiment in Taizhou,... -
Yongjun Xu (HIAS)
We develop a primal bootstrap framework for gravitational effective field theo-
Go to contribution page
ries based on fully crossing-symmetric dispersion relations, using finite-resolution sampling
instead of smearing. This approach has several key advantages: it allows direct control
over the number of subtractions, makes it possible to impose linearized unitarity beyond
positivity, and gives direct access to... -
MIngzheng Li (Shanghai Jiao Tong University)
Stochastic gravitational waves (GWs) consist of a primordial component from early Universe processes and an astrophysical component from compact binary mergers. To detect the primordial stochastic GW background (SGWB), the astrophysical foregrounds must be reduced to high precision, which is achievable for third-generation (3G) ground based GW detectors. Previous studies have shown that the...
Go to contribution page -
Sk Jeesun - (Tsung Dao Lee Institute)
Current multiton dark matter (DM) detectors are largely incapable of detecting light dark matter from the Galactic halo due to the energy threshold limitations of their recoil measurements. However, primordial black holes (PBHs) can evaporate via Hawking radiation to particles whose energies are set by the black hole temperature. Consequently, weakly interacting light dark matter (or dark...
Go to contribution page -
孜文 尹 (上海交通大学物理与天文学院（李政道研究所）)
Axions and primordial black holes (PBHs) are well-motivated dark matter candidates that can inject energy into the intergalactic medium (IGM) via decay or evaporation over cosmic history, leaving imprints on the cosmic microwave background (CMB). In recent work, we have derived a model-independent ionization history after recombination from CMB power spectra using a Gaussian process approach,...
Go to contribution page -
Xin-Hui Chu (TDLI, SJTU)
We determine the future sensitivity of the TRIDENT neutrino telescope to dark matter annihilation in the Galactic Centre. By applying the full detector design we show that TRIDENT will probe annihilation rates down to $\langle\sigma v\rangle\approx5\times10^{-27}\,{\rm cm}^3\,{\rm s}^{-1}$ for a $10\,{\rm TeV}$ dark matter, which is below the thermal freeze-out benchmark. The analysis is...
Go to contribution page -
尊 王 (东南大学)
We clarify the plasma effects on the couplings of dark photon and $U(1)_{B-L}$ gauge boson in medium and calculate the production rate of these two models in SN1987A via nucleon bremsstrahlung in detail, along with some secondary production channels. From the stellar cooling argument, we obtain the constraints on dark photon and $U(1)_{B-L}$ gauge boson. A new excluded region arises from the...
Go to contribution page -
Tingyuan Jiang (ICTP-AP, UCAS)
Ultralight dark matter (ULDM) coupled to the Standard Model can induce coherent oscillations of effective fundamental constants and thereby generate narrow-band signals in precision interferometric experiments. In this work, we investigate how such oscillations imprint signatures on space-based laser interferometers such as LISA and Taiji. Starting from the one-way inter-spacecraft link...
Go to contribution page -
彩霞 杨 (济南大学)
为了解开暗物质之谜以及中微子质量和问题，研究对跷跷板模型进行了一个简单扩展，在跷跷板机制中引入右手中微子，将暗区与中微子物理联系起来，不仅能够解释观测到的微小中微子质量问题，还能通过轻子生成过程解释宇宙的重子不对称性，构建“跷跷板通道”的暗物质模型。然而，在离散的$Z_2$对称模型中，当暗标量$\phi$粒子的质量小于右手中微子N时，即质量排序为 $m_N>m_\phi$...
Go to contribution page -
丽娜 闫 (西北大学)
基于∆(96)⋊H_CP 对称和 tri-direct CP 方法，系统分析最小跷跷板模型的对称破缺模式。
Go to contribution page
精准预测中微子混合角、CP 破缺相位及质量谱，为下一代中微子实验提供理论参考。 -
振伟 王 (济南大学)
暗物质是当今宇宙学与粒子物理学领域的核心未解难题，其粒子本质探索是理论物理研究的前沿热点。标准模型虽然是个比较完美的模型，但它不包含引力相互作用，无法解释暗物质本质是什么。所以，在标准模型的扩展规范对称性框架下，聚焦于“矢量玻色子 Z' 通道”的暗物质产生与探测机制，围绕 U(1)(L_μ-Lτ ) 和 U(1)(B-L) 两类典型模型，系统研究了暗物质的遗迹密度、产生机制、唯象学约束及实验探测前景等。论文旨在阐明 Z'通道暗物质在不同规范扩展下的物理特性，并为未来暗物质探测提供理论支撑。在U(1)(L_μ-Lτ ) 模型中，引入狄拉克费米子 χ 作为暗物质候选者，分析轻暗物质（MeV-GeV尺度）与重暗物质（TeV尺度）下参数空间约束以及Z' 玻色子实验探测范围；在U(1)(B-L)模型中，引入双狄拉克暗费米子 χ1 与 χ2 ...
Go to contribution page -
Prof. Yi-Fang Wang (IHEP)
希格斯粒子发现以后，标准模型基本完成，粒子物理处于转折点。一方面，标准模型还不能回答许多根本问题，只是一个在目前能标下的有效理论；另一方面，实验上发现了一些超出标准模型的迹象和证据。因此，我们需要更多的实验发现来理解更高能量、更深层次的物理。希格斯和中微子就是两个最好的窗口。我将介绍国内在这两方面的努力：一是刚刚在去年8月份开始运行取数的江门中微子实验（JUNO），另一个是环形正负电子对撞机（CEPC）。
Go to contribution page -
海志 郝 (西北大学)
基于模对称，我们系统分析了在双右手中微子Littlest Modular Seesaw机制中，模量场τ稳定在模对称固定点处的对称破缺模式。考虑有限模群Δ(96)，我们求出了所有最低与次低权重的三维矢量值模形式，全面扫描了模形式在固定点处的可能排列，筛选出符合最新中微子振荡整体拟合的可行模型。此类模型的轻中微子质量矩阵仅依赖于三个实参数，且最轻中微子质量为零，预言性极强。我们给出了由模对称性固定的新的混合矩阵第一列结构。结合 JUNO 首批结果以及 T2HK、DUNE 的未来探测精度，讨论了这些模最小跷跷板模型的现象学意义。
Go to contribution page
Choose timezone
Your profile timezone: