Conveners
Di-Higgs/Scalar
- Jianghao Yu (University of Massachusetts Amherst)
- Xiaohu SUN (Peking University)
- Fapeng Huang (中山大学)
- Yaquan FANG Yaquan (高能所)
Huaike Guo
(Institute of Theoretical Physics)
, Prof.
Jing Shu
(ITP)
29/08/2021, 09:30
柯盼 谢
(Seoul National University)
29/08/2021, 10:00
We propose a novel primordial black hole (PBH) formation mechanism based on a first-order phase transition (FOPT). If a fermion species gains a huge mass in the true vacuum, the corresponding particles get trapped in the false vacuum as they do not have sufficient energy to penetrate the bubble wall. After the FOPT, the fermions are compressed into the false vacuum remnants to form...
Mr
Shao-Jiang Wang
(ITP)
29/08/2021, 10:20
We derive an effective equation-of-motion for an expanding bubble wall in the thermal plasma with a general form of the thermal friction. The efficiency factor for gravitational waves productions from colliding bubble walls is obtained with a special interest for the strong first-order phase transition.
Primary authors Prof. Rong-Gen Cai (ITP-CAS)， Shao-Jiang Wang
Prof.
Ligong Bian
(Chongqing University)
29/08/2021, 11:20
We numerically investigate the B+L violation process by performing three-dimensional lattice simulations of a unified scenario of first-order phase transitions and the sphaleron generation. The simulation results indicate that the Chern-Simons number changes along with the helical magnetic field production when the sphaleron decay occurs. Based on these numerical results, we then propose a...
Dr
Wei Liu
(Nanjing University of Science and Technology)
29/08/2021, 11:40
We study the complementarity of the proposed multi-TeV muon colliders and the near-future gravitational wave (GW) detectors to the first order electroweak phase transition (FOEWPT), taking the real scalar extended Standard Model as the representative model. A detailed collider simulation shows the FOEWPT parameter space can be greatly probed via the the vector boson fusion production of the...
子航 贾
(Nanjing University)
29/08/2021, 14:30
Searches are performed for non-resonant and resonant di-Higgs boson production in the 𝑏𝑏 ̄𝛾𝛾 final state. The data set used corresponds to an integrated luminosity of 139 fb−1 of proton–proton collisions at a center-of-mass energy of 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. No excess with respect to background expectations is found and upper limits on the...
Dr
Junmou （俊谋） Chen （谌）
(KIAS)
29/08/2021, 15:10
We study the measurement of Higgs boson self-couplings through 2 → 3 vector boson scattering (VBS) processes in the framework of Standard Model effective field theory (SMEFT) at both proton and lepton colliders. The SMEFT contribution to the amplitude of the 2 → 3 VBS processes, taking WLWL → WLWLh and WLWL → hhh as examples, exhibits enhancement with the energy A(BSM)/A(SM) ~which indicates...
ABDUALAZEM FADOL MOHAMMED EBRHIM
(高能所)
29/08/2021, 16:20
A study showed that the multilepton anomalies in the LHC data could be explained by adding two real scalar bosons to the SM. This study provides a more comprehensive set of LHC results of the multilepton production. We find that combining such results leads to substantial inconsistencies between the data and SM Monte Carlo predictions. These discrepancies appear in corners of the phase-space...
