TDLI-PKU BSM workshop 2022: Electroweak lights the way

Session

Contributed talks (2)

2 Aug 2022, 14:20

Tsung-Dao Lee Institute

2. Flavor-changing Majoron interactions with leptons

Jin Sun (Shanghai Jiao Tong University)

02/08/2022, 14:20

When the Standard Model Higgs sector is extended with a complex singlet that breaks global lepton number symmetry spontaneously, a massless Goldstone boson called the Majoron $J$ arises. In addition to increasing Higgs invisible decay through mixing, the Majoron can generally have flavor-changing interactions with fermions. We use the type-III seesaw mechanism to demonstrate the existence of...

9. Vector Boson Scattering and new phenomena at LHC

Despoina Sampsonidou (Tsung-Dao Lee Institute, Shanghai Jiao Tong Univ.)

02/08/2022, 14:40

Observations of Vector Boson Scattering processes (VBS) are one of the major achievements of EWSB and Higgs unitarization mechanism studies at LHC Run2. This talk will bring the latest news from LHC in VBS observations and highly evident measurements, as well as the bridge to new physics portal utilizing such scattering final states.

10. Charged Lepton Flavor Violation at the EIC

Bin Yan (IHEP)

02/08/2022, 15:00

We present a comprehensive analysis of the potential sensitivity of the Electron-Ion Collider (EIC) to charged lepton flavor violation (CLFV)
in the channel $ep\to \tau X$, within the model-independent framework of the Standard Model Effective Field Theory (SMEFT).
We compute the relevant cross sections to leading order in QCD and electroweak corrections and perform simulations of signal...

11. Search for top quark FCNC interactions at ATLAS

Mingming Xia (Tsinghua University)

02/08/2022, 15:40

The large dataset collected by the ATLAS detector at allows to probe the presence of new physics that could enhance the rate of rare processes in the SM. The LHC can therefore gain considerable sensitivity for Flavour Changing Neutral Current (FCNC) interactions of the top quark. The ATLAS experiment has performed searches for FCNC couplings of the top quark with a photon, gluon, Z boson or...

12. CP-violating dark photon kinetic mixing and type-III seesaw model

Yu Cheng

02/08/2022, 16:00

The hypothetical dark photon portal connecting the visible and dark sectors of the Universe has received
considerable attention in recent years, with a focus on CP-conserving kinetic mixing between the Standard
Model hypercharge gauge boson and a new U(1)X gauge boson. In the effective field theory context, one
may write nonrenormalizable CP-violating kinetic mixing interactions involving the...

13. Type-II Seesaw Triplet Scalar Effects on Neutrino Trident Scattering

Mingwei Li (TDLI)

02/08/2022, 16:20

In Type-II seesaw model, an electroweak triplet scalar field $\Delta$ with a non-zero vacuum expectation value (vev) $v_\Delta$ is introduced to facilitate the generation of small neutrino masses. A non-zero $v_\Delta$ also affects the W mass through the electroweak $\rho$ parameter, making it to be less than 1 as predicted by standard model (SM). The component fields in $\Delta$ come along...