Mr
Gangcheng Lu
(IHEP, CAS)
7/25/22, 10:05 AM
A measurement of inclusive and differential fiducial cross-sections for the production of the Higgs boson decaying to two photons is performed using 139 fb−1 of proton–proton collision data recorded at √s = 13 TeV by the ATLAS experiment at the Large Hadron Collider. The inclusive cross-section times branching ratio, in a fiducial region closely matching the experimental selection, is measured...
Dr
Junmou （俊谋） Chen （谌）
(Jinan University (Guangdong))
7/25/22, 10:25 AM
Multiple EW vector boson amplitudes are known to have bad energy behavior for individual Feynman diagrams, which causes many problems for numerical and theoretical analysis. Based on Goldstone equivalence theorem(GET), we introduce a new representation of Feynman rules that makes GET manifest, while reproduces the exact results of the amplitudes. The new helicity has no subtle gauge...
昌龙 许
(school of physics Peking Uniersity)
7/25/22, 10:45 AM
The CP property of the 125 GeV Higgs boson remains a mystery nowadays, which implies the possibility of new physics. We consider a scenario that degenerated 125 GeV CP-even and CP-odd Higgs bosons in a CP conserving Lagrangian will contribute to nontrivial CP measurement. We use 2HDM as an example to show that DiHiggs production in future hadron and electron-positron colliders are potentially...
Prof.
Lilin Yang
(Zhejiang University)
,
Lilin Yang
(Zhejiang University)
7/25/22, 2:00 PM
Invited plenary talk
Huanguo Li
(Nanjing University)
7/25/22, 2:50 PM
This talk will present a measurement of the charge conjugation and parity ($CP$) properties in the Higgs boson interaction with $\tau$ leptons. The Yukawa interaction is generalized with a single mixing angle parameter $\phi_{\tau}$ to describe $CP$-odd interactions between the Higgs boson and $\tau$ leptons. The study is based on a measurement of $CP$-sensitive angular observables defined by...
Changqiao LI
(SJTU & TDLI)
,
昌樵 李
(Shanghai Jiao Tong University)
7/25/22, 3:10 PM
This talk will present the latest ATLAS Higgs combination result at the Higgs symposium to show the precision map after 10-year Higgs observation.
fabio monti
(高能所)
7/25/22, 3:30 PM
This talk will present the latest combined measurement of Higgs cross sections and couplings with decay channels of single Higgs, as well as the constrains of Higgs self-coupling using single Higgs events.
Congqiao Li
(Peking University)
7/25/22, 4:40 PM
The Higgs boson couplings to fermions and vector bosons have been well established since its discovery. Measuring the Higgs interaction with the charm quark is one of the next milestones on LHC, yet it is a challenging task due to the small branching ratio of H→cc̅ and the difficulty in charm tagging. This talk presents the latest search for a Higgs boson decaying to a cc̅ pair using the VH...
Dr
Xiaoze Tan
(Harbin Institute of Technology)
7/25/22, 5:00 PM
We calculate the decay branching fractions of the Higgs boson to $J/\psi$ and $\eta_c$ via the charm-quark fragmentation mechanism for the color-singlet and color-octet states in the framework of non-relativistic QCD.
The decay rates are governed by the charm-quark Yukawa coupling, unlike the decay $H\to J/\psi + \gamma$, which is dominated by the $\gamma^*$-$J/\psi$ mixing.
We find that...
子航 贾
(Nanjing University)
7/26/22, 9:30 AM
This talk will show an overview of searches 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.
Mr
kangyu chai
(Theoretical Physics Division, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China)
7/26/22, 11:20 AM
The Higgs self coupling measurement is quite essential for determining the shape of the Higgs potential and nature of the Higgs boson. We propose the di-Higgs plus jet final states at hadron colliders to increase the discovery sensitivity of the Higgs self coupling at the low invariant mass region. Our simulation indicates that the allowed region of the Higgs self coupling would be further...
Botao Guo
(Peking University)
7/26/22, 11:40 AM
A search for Higgs boson pair production via gluon-gluon and vector boson fusion processes in $bb\mu\mu$ final state at hadron colliders is presented. The search uses Monte Carlo sample simulated from proton-proton collisions with an integrated luminosity of 300 fb$^{-1}$. An upper limit at 95% confidence level is set on the product of the Higgs boson
pair production cross section and...
Mr
Tong LI
(Shandong University)
7/26/22, 2:50 PM
This talk will present a search for Higgs boson pair (hh) production in association with a vector boson (W or Z) using 139/fb of the proton-proton collision data at √s = 13TeV recorded with the ATLAS detector. The search is performed in final states in which the vector boson decays leptonically (W → lν, Z → ll, νν with l = e, μ) and the Higgs bosons decay to a pair of b-quarks. It targets Vhh...
Jin Wang
(IHEP)
7/26/22, 4:00 PM
A combined measurement of the HH cross section and Higgs self-coupling was done by CMS at the beginning of 2022, in preparation for the 10th Anniversary of the Higgs discovery. This talk will present these exciting results.
Kunlin RAN
(Beijing)
,
RAN Kunlin
7/26/22, 4:20 PM
Constraints on the Higgs boson self-coupling are set by combining the the double-Higgs boson analyses with the single-Higgs boson analyses . The data used by these analyses were recorded by the ATLAS detector at the LHC in proton-proton collisions at s√=13
TeV and corresponds to an integrated luminosity of 126-139 \ifb.
Mr
Haibin Chen
(Sun Yat-sen University)
7/27/22, 9:30 AM
It has been demonstrated that first-order phase transitions (PTs) are achievable in a large number of BSM models. However, the successful nucleation of PT vacuum bubbles is often overlooked. Using the singlet model as an example, we will present the possible patterns of PTs achieved and build the connection to the vacuum structure at zero temperature. In this talk we focus on the one-step PTs...
Dr
Ke-Pan Xie
(University of Nebraska-Lincoln)
7/27/22, 9:50 AM
We propose a mechanism that forms primordial black holes (PBHs) via a first-order electroweak phase transition (FOEWPT). The FOEWPT is realized by extending the Standard Model with a real singlet scalar, while the PBH formation is achieved by the collapse of non-topological solitons called Fermi-balls. Such solitons form via trapping fermions in the false vacuum during the FOEWPT, and they...
Wei Liu
(Nanjing University of Science and Technology)
7/27/22, 2:30 PM
We study the scenarios where a strong first order electroweak phase transition~(FOEWPT) is triggered by a light singlet scalar, which has feeble interactions to the Higgs.
Since the singlet scalar is light and has weak couplings, it can decay at a macroscopic distance away from the collision point. Therefore, it can be regarded as a long-lived particles~(LLP) in such scenarios. We perform...
mingming xia
(Tsinghua University)
7/27/22, 2:50 PM
The large integrated luminosity collected by the ATLAS detector at the highest proton-proton collision energy provided by LHC 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. In the SM, FCNC involving the top-quark...
Changqiao LI
(SJTU & TDLI)
,
Qibin Liu
(TDLI & SJTU)
7/27/22, 3:10 PM
This talk will present the latest searches for Mono-H125 and Mono-Scalar productions with SM and BSM Higgs as a direct probe to BSM portal of new physics and especially Dark Matter. A potential of utilizing the boosted Xbb tagger will be also discussed.
伟 苏
(university of Adelaide)
7/27/22, 4:40 PM
We perform comparative studies for four types of the two Higgs Doublet Models (2HDMs) under the precision measurements of the Standard Model (SM) Higgs observables at the proposed Higgs factories. The exploration for the discovery potential is up to one-loop level. We find 5σ observability from the global fitting in a significant theory parameter space at future Higgs factories. We also...
yue xu
(Tsinghua University)
7/27/22, 5:00 PM
A search for heavy Higgs bosons decaying into a pair of vector bosons and produced in association with a vector boson is performed, using final states with two leptons of the same electric charge (electrons or muons), missing transverse momentum and jets. A data sample of proton-proton collisions at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider...
Antonio De Maria
(Nanjing University)
7/27/22, 5:20 PM
This talk will present a search for scalar leptoquarks in btautau final state using a data sample corresponding to 139 fb$^{-1}$ of proton–proton collisions recorded at a center-of-mass energy of $\sqrt{s}$= 13 TeV with the ATLAS detector at the Large Hadron Collider. The signal benchmark model considered is a scalar leptoquark with an electric charge of 4/3e and quantum numbers 3B + L = -2,...
Prof.
Tao Han
(Univ. of Pittsburgh & TsingHua University)
7/27/22, 8:00 PM
