Conveners
Higgs Physics
- Michele De Gruttola (CERN)
Higgs Physics
- Michele De Gruttola (CERN)
Higgs Physics
- Zhao-Huan Yu (University of Melbourne)
Higgs Physics
- Zhao-Huan Yu (University of Melbourne)
Higgs Physics
- Tao Liu (The Hong Kong University of Science and Technology (HK))
The final Run 1 and first Run 2 results on the measurement of the cross sections and couplings of the Higgs boson in the diboson decay channel with the ATLAS detector are presented.
The final Run 1 and first Run 2 results on the measurement and searches for the Higgs boson and Higgs boson pair production in the fermion decay channel with the ATLAS detector are presented.
The search for the production of the Higgs Boson with a pair of top-anti-top quarks is both very important and very challenging. The final results from run-1 are presented, with about 20 fb^(-1) of data at 8 TeV, as well as first run-2 results with 3.2 fb^(-1) of data at 13 TeV.
A review of the combination of the Higgs boson coupling measurements
using the data collected in 2011 and 2012 by the ATLAS and CMS experiments is presented.
Several theories beyond the Standard Model, like the EWS or 2HDM models, predict the existence of high mass neutral Higgs particles, which could decay into final states with Weak bosons. In this presentation the latest ATLAS results on these searches will be discussed, using 3.2 ifb of p-p collisions at 13 TeV.
Several theories beyond the Standard Model, like the EWS or 2HDM models, predict the existence of high mass neutral or charged Higgs particles, which could decay into final states with fermions. In this presentation the latest ATLAS results on these searches will be discussed, using 3.2 ifb of p-p collisions at 13 TeV.
After the Higgs boson discovery, the precision measurements and searches for new phenomena in the Higgs sector are among the most important goals in particle physics. Experiments at the Future Circular Colliders (FCC) are ideal to study these questions. Electron-positron collisions up to an energy of 350 GeV (FCC-ee) provide the ultimate precision with studies of Higgs boson couplings, mass,...
Focussing on the MSSM Higgs sector, we present a multi-dimensional fit of the pMSSM to the LHC Run 1 results, taking into account the measurements of Higgs and low energy observables as well as constraints from direct SUSY searches. We investigate in how much the MSSM can provide a good description of the experimental data, and which parts of the MSSM parameter space are favoured. We analyse...
We present new results and improved predictions for the Higgs sector in the (N)MSSSM, based on the implementation into our code FeynHiggs.
With the LHC Run-2 results at 13 TeV, we perform the calculation on the lower bound on the Z' boson mass in the context of the general U(1) gauged extension of the standard model with classically scale invariance and the electroweak vacuum stability at 2-loop level. The model is called the classically conformal U(1)' extended standard model which is a phenomenologically viable one that...
Some theories predict Lepton Flavour Violating decays of the Higgs boson, while other predict enhanced decay rates in rare modes like Z-photon, J/Psi-photon, Phi-photon or into pairs of light pseudoscalar bosons "a". Such decays are searched for using about 10 ifb of p-p collisions at 13 TeV.
Recent results on searches for Beyond Standard Model production of Higgs bosons at the LHC by the CMS collaboration are presented. Minimal supersymmetric models (MSSM), next-to-minimal supersymmetric models (NMSSM) and generic two-higgs-doublet models (2HDM) are explored.
Additional Higgs bosons (pseudoscalar, charged, light and heavy scalars) are also looked for in multiple final states,...
Recent results on searches for Beyond Standard Model production of Higgs bosons at the LHC by the CMS collaboration in other than Minimal supersymmetric models are presented.
A summary of the CMS results in the study of the Higgs boson in decays to bosons will be presented in this talk.
A summary of the CMS results in the study of the Higgs boson in decays to fermions will be presented in this talk. The studies on the ttH production are also included in this talk.
The status of the Higgs boson parameter measurements (mass, spin/CP, couplings, off-shell cross sections and constraints on invisible width) from the CMS experiment will be discussed in this talk.
We present the full one-loop calculations of Higgs bosons to SUSY particles in the MSSM with complex parameters (cMSSM). They include SUSY-QCD and electroweak corrections, as well as real QED and QCD radiation. The size of the corrections are at the level of 10-20%, but can also be higher, depending on the parameter space. Consequently, the one-loop corrections should be included in any...
We study the sensitivity of top polarization observables to the CP phase $\zeta_t$ in the top Yukawa coupling in the process $pp\to thj$ at the 14 TeV high-luminosity run of Large Hadron Collider (HL-LHC). We calculate the top polarization in this process as well as an azimuthal asymmetry of the charged lepton arising from the decay of the top in the laboratory frame. We find that the...
The Higgs may be a singlet under a nonlinearly realised electroweak symmetry. Differing from the SM, anomalous Higgs cubic couplings are then permitted in the potential, which may lead to a first order electroweak phase transition. We find a range of cubic coupling that may lead to observable gravitational waves signatures at interferometer such as eLISA.
We study the cosmological history of the classical conformal B−L gauge extension of the standard model, in which the physical scales are generated via the Coleman-Weinberg-type symmetry breaking. Especially, we consider the thermal phase transition of the U(1)B−L symmetry in the early universe and resulting gravitational-wave production. Due to the classical conformal invariance, the phase...
Charged Higgs bosons are predicted in variety of theoretically well-motivated new physics models with extended Higgs sectors. In this study, we focus on a type-II two Higgs doublet model (2HDM-II) and consider a heavy charged Higgs with its mass ranging from 500 GeV to 1 TeV as dictated by the $b\to s\gamma$ constraints which render $M_{H^\pm}>480$ GeV. We study the dominant production mode...
We study a noble approach in reconstructing the semi-invisible events by utilizing the constrained mass variable, $M_{2Cons}$ and applied so in case of presently developing scenario, when a pair of the third generation $\tau$ leptons originated from Higgs at LHC. Buoyed with a relatively large Yukawa coupling, the LHC has already started exploring this pair production to investigate the...
Long-lived, colour-triplet scalars are a generic prediction of unnatural, or split, composite Higgs models where the spontaneous global-symmetry breaking scale $f≳10$ TeV and an unbroken SU(5) symmetry is preserved. Since the triplet scalars are pseudo Nambu-Goldstone bosons they are split from the much heavier composite-sector resonances and are the lightest exotic, coloured states. This...
We consider a composite Higgs model embedded into a Grand Unified Theory (GUT) based on the $E_6$ gauge group. The phenomenological viability of this $E_6$ inspired composite Higgs model (E$_6$CHM) implies that standard model (SM) elementary fermions with
different baryon or lepton number should stem from different $27$ representations of $E_6$. We present a six--dimensional orbifold GUT...
There is a cry in the wilderness: "Repent! The Higgs boson may be fictitious." (Phil Anderson, Nature Physics 2/2015). A light "Higgs" mode appears in a specially prepared superconductor material, where "amplitude modes" are much higher at twice the energy/mass gap. With the 125 GeV boson well established, could it be dynamical rather than elementary, and not in the Standard Model Lagrangian?...
We present global fits of the Two-Higgs-Doublet models with a softly broken $Z_2$ symmetry. The results were obtained with the public HEPfit package and combine the effects of various constraints coming from experiment (including LHC run I) and theory. As for the latter, we use for the first time the next-to-leading order contributions to the scattering matrix of ``two scalar to two scalar"...
With the current measurements performed by CMS and ATLAS experiments, the light charged Higgs scenario ($m_{H^{\pm}}$ $<$ 160 GeV), is excluded for most of the parameter space in the context of MSSM. However, there is still possibility to look for heavy charged Higgs boson particularly in the $s$-channel single top production process where the charged Higgs may appear as a heavy resonance...
