-
Michael Spannowsky08/10/2024, 09:00
I will start by reviewing the concepts of quantum computing. Then I will discuss how quantum computing and quantum machine learning can be used in the context of high-energy physics.
Go to contribution page -
Zuowei Liu08/10/2024, 09:30
I will discuss two dark matter search channels at electron colliders.
Go to contribution page -
Prof. Frank Krauss (Durham U.)08/10/2024, 10:00
In my talk I will summarise the state of precision simulations for the LHC and future accelerator-based experiments at high energies, such as the upcoming EIC and a possible lepton collider. I will also discuss some of the improvements - both in terms of theory and method development and in implementation - that are necessary to meet the accuracy goals of the experiments and to have strategic...
Go to contribution page -
Sang Hui Im (IBS-CTPU-PTC)08/10/2024, 11:00
Nuclear, atomic, and molecular permanent electric dipole moments (EDMs) are CP-violating low-energy observables that serve as powerful probes for new physics potentially existing at high energies, above the TeV scale. An intriguing aspect of EDMs is that the ratios among them can vary based on specific ultraviolet (UV) sources of CP violation. This raises an important question: can we identify...
Go to contribution page -
Prof. Elisa Ferreira (IPMU)08/10/2024, 11:30
In this talk, I highlight the strong constraining power of small scale astrophysical observations. The small scales not only give us a window into the still not precisely measured small scale behaviour of dark matter, but it can also tell us about the particle physics properties of this component. We focus on the ultra-light dark matter models, specifically the fuzzy dark matter (FDM) model,...
Go to contribution page -
Gang Li (Sun Yat-Sen University)08/10/2024, 13:30
Abstract: In this talk, I will discuss how neutrinos can act as a window to MeV-TeV scale new physics, including (1) searches for lepton number violation in neutrinoless double beta decay, as well as low-energy precision and high-energy collider experiments; (2) direct and indirect searches for sterile neutrinos; (3) complementary searches for neutrino non-standard interactions, charged lepton...
Go to contribution page -
Yuichiro Nakai08/10/2024, 14:00
We build upon the intriguing possibility that the recently reported nano-Hz gravitational wave signal by Pulsar Timing Array (PTA) experiments is sourced by a strong first-order phase transition from a nearly conformal dark sector. The phase transition has to be strongly supercooled to explain the signal amplitude, while the critical temperature has to be in the O(GeV) range, as dictated by...
Go to contribution page -
Yu Watanabe (IPMU)08/10/2024, 14:30
In light of the negative results from WIMP search experiments, attention has shifted toward light thermal DM. Moreover, light DM has the potential to address the core-cusp problem with its large self-scattering rate. However, such models may also predict a high annihilation rate, which could be constrained severely by gamma-ray telescopes. In our study, we explored the possibility of...
Go to contribution page -
Dr Yu-Cheng Qiu (Tsung-Dao Lee Institute)08/10/2024, 15:30
The $S_8/\sigma_8$ tension in the large scale structure can be explained by decaying dark matter with an almost degenerate spectrum and small enough decay width. Here we propose the Gemini dark matter model, which contains a heavy mother particle $\chi_3$ and two twins $\chi_{1/2}$ which are almost degenerate in mass and are produced at the same time. The dark sector is charged under the same...
Go to contribution page -
Jongkuk Kim (Chung-Ang University)08/10/2024, 16:00
We study multi-component dark matter scenarios and the Galactic 511 keV gamma-ray emission line signal in the framework of a local, dark U(1)_D extension of the Standard Model. A light vector dark matter particle associated with the dark U(1)D may decay and annihilate to electron-positron pairs. The produced positrons may in turn form positroniums that subsequently annihilate to two photons,...
Go to contribution page -
Tao Li (Sun Yat-sen University)08/10/2024, 16:30
Axion-like particles (ALPs) and dark photons (DPs) are viable dark matter particle candidates that multiple underground experiments have investigated. We have searched for possible ALP/DP signals in the PandaX-4T liquid xenon detector using 94.8 days of data. A binned likelihood fit is constructed to scan for possible mono-energetic peaks induced by the absorption processes between ALPs/DPs...
Go to contribution page -
Yue-Lin Sming Tsai (Purple Mountain Observatory)08/10/2024, 17:00
This study reanalyzes the detection prospects of dark matter (DM) annihilation signals in the Galactic Center, focusing on velocity-dependent dynamics within a spike density near the supermassive black hole (Sgr A⋆). We investigate three annihilation processes --pp-wave, resonance, and forbidden annihilation -- under semi-relativistic velocities, leveraging gamma-ray data from Fermi and DAMPE...
Go to contribution page -
Christoph Englert (University of Glasgow)09/10/2024, 09:00
I will review recent advancements in (multi-)Higgs physics to illustrate how the HL-LHC phase and future colliders can provide insight into the dynamics that address the limitations of the Standard Model of Particle Physics.
Go to contribution page -
Myeonghun Park (Seoultech)09/10/2024, 09:30
The LHC has not yet fully constrained the physics associated with the Higgs boson, leaving room for such possibilities. Among the various potential mass scales of the dark sector, the sub-GeV mass range is particularly intriguing. This parameter space presents significant challenges for DM direct detection experiments that rely on nuclear recoils.
Go to contribution page
Due to the significantly lower mass of... -
Shu Li (TDLI, SJTU)09/10/2024, 10:00
Ref: https://arxiv.org/abs/2306.00641
Go to contribution page
Science Bulletin 2024,69(19):3005-3035 (doi:10.1016/j.scib.2024.06.003)
Results from a wide range of searches targeting different experimental signatures with and without missing transverse momentum ($E^{𝑚𝑖𝑠𝑠}_𝑇$) are used to constrain a Two-Higgs-Doublet Model (2HDM) with an additional pseudo-scalar mediating the interaction between ordinary and dark... -
Hye-Sung Lee (Korea Advanced Institute of Science and Technology)09/10/2024, 11:00
Dark energy is the least understood component of the universe despite its dominance. A proper understanding of the universe might require an investigation of the possible symmetries of the dark sector. We introduce a gauge symmetry to a quintessence dark energy field and discuss its implications.
Go to contribution page -
Yong Du (TDLI-SJTU)09/10/2024, 11:30
Symmetries are at the heart of modern particle physics, and the violation of certain discrete symmetries such as parity (P) and its combination with the charge-conjugate symmetry (CP) has been playing a significant role in our understaning of nature. In this talk, I will discuss how to test the P and the CP discrete symmetries with the angular distribution of octet baryons from J/psi decay.
Go to contribution page -
Yue Meng (Shanghai Jiao Tong University)09/10/2024, 13:30
The PandaX-4T experiment, one of the most sensitive dark matter search experiments to date, employs a two-phase liquid/gas xenon time projection chamber containing 4 tonnes of liquid xenon. The primary goals are to detect dark matter and to probe neutrino properties. Located in the Jinping Underground Laboratory in Sichuan, China, with 2400 meters of rock overburden for shielding against...
Go to contribution page -
Lei Wu (Nanjing Normal Univeristy)09/10/2024, 14:00
Plasmon, a collective mode of electronic excitation in solid-state detectors, provides a novel way to detect light dark matter (DM). In this work, we present the conditions of DM to produce plasmon resonance, requiring relativistic velocities for light DM, and generalize the collective excitation framework to account for relativistic DM. As a demonstration, we consider the cosmic ray boosted...
Go to contribution page -
Dr Jiang Zhu (TDLi institution)09/10/2024, 14:30
We discuss the catalysis of the primordial black holes(PBH) on the first-order electroweak phase transition(FOEWPT). We accurately studied the nucleation rate for bubbles around the PBH by solving the Einstein and bounce equations rather than applying the thin-wall approximation. We found the ordinary thin-wall approximation will overestimate the nucleation rate. For the first time, we showed...
Go to contribution page -
Hualin Mei09/10/2024, 15:30
The TRopIcal DEep-sea Neutrino Telescope (TRIDENT) will instrument about 8km^3 of seawater with optical detection modules approximately 3.5km deep in the South China Sea. With the use of advanced photon-detection technology in large dimensions, TRIDENT expects to observe the IceCube steady source candidate NGC 1068 within one year of operation. This telescope will open a new domain searching...
Go to contribution page -
Yifeng Sun09/10/2024, 16:00
Quantum Chromodynamics (QCD) is the study of the strong interaction between quarks, mediated by gluons. Understanding strong interactions in hot and/or dense matter is one of the most challenging, yet fascinating, problems in modern physics. Under these conditions, a new state of matter called quark-gluon plasma (QGP) can be formed. QGP could potentially restore several symmetries, such as...
Go to contribution page -
Prof. Kai Yan (Shanghai Jiao Tong University)09/10/2024, 16:30
Collinear factorization of gauge theory amplitudes is violated in the spacelike region due to the effect of long-range Coulomb interactions mediated by Glauber gluons.
Go to contribution page
We analytically calculate the spacelike collinear limit of the full color two-loop five-point amplitudes in N=4 Super-Yang-Mills theory. The result was obtained from two complementary methods. This talk will focus on the... -
Prof. Shigeki Matsumoto (Kavli IPMU, U. of Tokyo)10/10/2024, 09:00
The decay of the mediator particle into standard model (SM) particles plays a significant role in exploring the dark sector scenario. We consider such a decay, taking the dark photon mediator as an example that mixes with the SM photon. We find that it requires a careful analysis of the decay rate in the presence of an SM vector boson (e.g., Z boson, ρ meson, and true muonium, etc.) nearly...
Go to contribution page -
Prof. Yungui Gong (Ningbo University)10/10/2024, 09:30
-
Ki-Young Choi (Sungkyunkwan University)10/10/2024, 10:00
I will talk about a novel and comprehensive particle physics framework that addresses multiple cosmological tensions observed in recent measurements of the Hubble parameter, S8, and Lyman-α forest data. Our model, termed ‘SIDR+zt’ (Self Interacting Dark Radiation with transition redshift), is based on an inelastic dark matter (IDM) scenario coupled with dark radiation, governed by a U(1)_D...
Go to contribution page -
Dingyu Shao10/10/2024, 11:00
The anomalous magnetic dipole moment (MDM) and electric dipole moment (EDM) of the τ lepton are vital probes for new physics beyond the Standard Model. Utilizing azimuthal angular asymmetry as an innovative tool in ultraperipheral collisions (UPCs), we achieve unprecedented precision in studying these properties. This approach, driven by the highly linear polarization of coherent photons,...
Go to contribution page -
qiuyue liang (IPMU)10/10/2024, 11:30
The strong charge-parity (CP) problem has been a long-standing problem in particle physics since 1976, illustrating the small CP-violation phase in quantum chromodynamics (QCD). The axion, based on the Peccei-Quinn mechanism, is the most popular solution to the problem. In this paper, we propose an alternative solution based on the three-zero texture of quark mass matrices without additional...
Go to contribution page -
Ye-Ling Zhou (HIAS-UCAS)10/10/2024, 13:30
Grand Unified Theories (GUTs) aim to unify all fundamental particle interactions including electromagnetic, strong and weak interactions. Thanks to the recent fast progress in neutrino precision measurements and gravitational wave (GW) observations, two complementary tests become more and more important in addition to the traditional proton decay measurements. One is to test correlations of...
Go to contribution page -
Dr Akira Takenaka (TDLI)10/10/2024, 14:00
Grand Unified Theories (GUTs) generically predict direct transition processes between quarks and leptons, making the search for proton decay a crucial method for directly testing these theories. The current limits on the proton (and neutron) decay lifetimes have primarily been established by the Super-Kamiokande (Super-K) experiment, which utilizes the world’s largest underground water...
Go to contribution page -
Oleg Popov (Shenzhen MSU-BIT University)10/10/2024, 14:30
In the talk, the focus will be on an extension of the classical scotogenic neutrino mass paradigm, where the three issues in particle physics: dark matter, smallness of neutrino mass, and stability of the proton are interconnected. The scenario encompasses the neutrino mass as well as the proton decay as a consequence of an existence of the dark matter. The study successfully achieves the...
Go to contribution page -
Beige Liu (中国科学技术大学)10/10/2024, 15:30
Whether the magnetic monopole (MM) exists is a long-standing question in particle physics. It is postulated to be crucially related to the quantization of the electric charge. Under the framework of the Grand Unified Theory (GUT), a certain amount of MMs are produced during the splitting between strong and electroweak forces, which occurred very shortly after the big bang. Past efforts were...
Go to contribution page -
Jie Sheng (Shanghai Jiao Tong University, Tsung-Dao Lee Institute)10/10/2024, 15:45
We propose a new scenario that both the dark matter freeze-out in the early Universe and its possible annihilation for indirect detection around a supermassive black hole are enhanced by a Breit-Wigner resonance. With the mediator mass larger than the total initial dark matter mass, this annihilation is almost forbidden at late times. Thus, the stringent cosmic microwave background and...
Go to contribution page -
Liang Tan10/10/2024, 16:00
The cosmic gravitational focusing (CGF) of relic neutrinos can provide an independent measurement of the absolute neutrino masses with a dependence on the fourth power of mass. In addition, CGF can help determine neutrino mass ordering. I will show that our projected CGF at DESI has a comparable sensitivity to the existing clustering method. Combining the projected CGF and clustering method...
Go to contribution page -
Shi-Ping Zeng10/10/2024, 16:15
Neutral triple gauge couplings (nTGCs) are manifestation of new physics beyond the Standard Model (SM), as they are absent in the SM and are first generated by dimension-8 operators in the SM Effective Field Theory (SMEFT). We study the UV completion of nTGCs in a renormalizable model with vector-like heavy fermions. We compute the one-loop heavy fermion contributions to nTGC vertices by...
Go to contribution page -
Pyungwon Ko (Korea Institute for Advanced Study)11/10/2024, 09:00
The Belle II collaboration recently announced that they observed the B+→K+νν¯ decay process for the first time. This dineutrino mode of B+→K+νν¯ has been theoretically identified as a very clean channel. However, their result encounters a 2.7σ deviation from the Standard Model (SM) calculation. On the other hand, last year, Fermilab released new data on muon g−2 away from the SM expectation...
Go to contribution page -
Prof. Wan-il Park (Jeonbuk National University)11/10/2024, 09:30
I will introduce the minimal cosmological standard model, and discuss its various cosmological aspects.
Go to contribution page -
Rahool Barman (Kavli IPMU)11/10/2024, 10:00
Optimal kinematic observables are often defined in specific frames and then approximated at the reconstruction level. We show how multi-dimensional unfolding methods allow us to reconstruct these observables in their proper rest frame and in a probabilistically faithful way. We illustrate our approach with a measurement of a CP phase in the top Yukawa coupling.
Go to contribution page -
Xiaoping Wang (Beihang University)11/10/2024, 11:00
Embedded within the Axion's multifaceted role in resolving the Strong CP problem and its emergence as a compelling dark matter (DM) candidate is the intriguing potential of Axion-Like Particle (ALP) DM to interact with Standard Model particles as effective magnetic fields. The search for axions is therefore crucial for uncovering new physics beyond the Standard Model.
Go to contribution page -
Michihisa Takeuchi (Sun Yat-sen University)11/10/2024, 11:30
We show the implications of the muon anomalous magnetic moment for two-Higgs-doublet models (2HDMs), which are classified according to imposed symmetries and their resulting Yukawa sector. In the minimal setup, the muon g-2 can be accommodated by the type-X (leptophilic) 2HDM, flavor-aligned 2HDM (FA2HDM), muon-specific 2HDM (mu2HDM), and mu-tau-flavor-violating 2HDM. We clarify the available...
Go to contribution page -
Ippei Obata (Kavli IPMU)11/10/2024, 13:30
Optical interferometry used in the gravitational wave detectors is one of the most accurate measuring science. It enables us to detect a tiny deviation of phase velocity of laser light, and we can apply such a technological innovation to the axion detection by measuring the photon’s polarization caused by axion dark matter. In this work, we clarify if the gravitational detectors can test a...
Go to contribution page -
Tomasz Dutka (Korea Institute for Advanced Study)11/10/2024, 14:00
The typical mass scale and dynamics of thermal leptogenesis is well understood in the 'vanilla' framework where the departure from equilibrium is driven by the expansion of the universe. As opposed to this slow expansion, a first-order phase transition offers a drastic and violent source of out-of-equilibrium dynamics. When coupled to models of baryogenesis, such as leptogenesis, there can be...
Go to contribution page -
Andrew Cheek (TDLI, SJTU)11/10/2024, 14:30
I will discuss the cosmological impact of the heavy fermions that are often invoked in axion models that solve the strong CP problem. These additional fermions can lead to phases of early matter domination which would alter the predicted mass for axion dark matter as well as contributing to additional relativistic degrees of freedom which can be constrained by measurements of the Cosmic...
Go to contribution page -
Jason L Evans (SJTU/TDLI)11/10/2024, 15:30
If dark matter is ultralight, the number density of dark matter is very high and the techniques of zero-temperature field theory are no longer valid. The dark matter number density modifies the vacuum giving it a non-negligible particle occupation number. For fermionic dark matter, this occupation number can be no larger than one. However, in the case of bosons the occupation number is...
Go to contribution page -
Satoshi Shirai (Kavli IPMU)11/10/2024, 16:00
Axions present a promising solution to the strong CP problem in the Standard Model. However, this solution relies on the existence of an almost exact global symmetry, known as Peccei-Quinn (PQ) symmetry, which is problematic because quantum gravity is believed to forbid global symmetries. High-quality axion models resolve this tension by realizing PQ symmetry as an accidental symmetry, thus...
Go to contribution page -
Yongchao Zhang (Southeast University)11/10/2024, 16:30
We present a comprehensive analysis of nonstandard neutrino interactions with the dark sector in an effective field theory framework. We implement the full catalog of constraints on the parameter space of the neutrino–dark matter (DM)/mediator couplings and masses, including cosmological and astrophysical bounds coming from Big Bang Nucleosynthesis, Cosmic Microwave Background, DM and neutrino...
Go to contribution page
Choose timezone
Your profile timezone: