Conveners
Parallel: Di-Higgs: [Room A]
- Daniel Egana-Ugrinovic (Perimeter Institute)
- Agni Bethani (Universite Catholique de Louvain (UCL) (BE))
- Elizabeth Brost (Brookhaven National Laboratory (US))
Description
Parallel A ZOOM Meeting: 683 5990 0577
Passcode: [please register to get this info]
Mattermost channel for discussions: https://mattermost.web.cern.ch/higgs2021/channels/di-higgs
Introducing simplified models with new particles/symmetries is one of the simplest solutions to the questions unanswered by the Standard Model of particles physics. We explore the phenomenology of adding a complex scalar singlet to the Standard Model without imposing any additional symmetries. This extension is particularly interesting since the model has three scalar mass eigenstates. This...
In this talk, we will analyze the production cross sections of two
neutral Higgs bosons in models with two Higgs doublets (2HDM) with
$CP$ conservation at future $e^{+}e^{-}$ colliders (specifically
ILC and CLIC). Based on a previous work, we have studied the two main
processes where the triple Higgs couplings can play an important role:
$e^{+}e^{-}\to h_{i}h_{j}\nu\bar{\nu}$ (mainly...
A direct measurement of the Higgs self coupling is very crucial to understand the nature of electroweak symmetry breaking. This requires an observation of production of Higgs boson pair, which suffers from very low event rate even at the current LHC run. In our work, we study the prospects of observing the Higgs pair production at the high luminosity run of the 14 TeV LHC (HL-LHC) and also...
The discovery of the Higgs boson and the measurement of its properties confirming the Standard Model (SM) is a major step towards the understanding of electroweak symmetry breaking. As a result, the potential of the Higgs field, and therefore the self-coupling of the Higgs boson, is precisely predicted in the SM. It can be probed by measuring the cross section of Higgs boson pair production,...
The latest results on the production of Higgs boson pairs (HH) in the ATLAS experiment are reported, with emphasis on searches based on the full LHC Run 2 dataset at 13 TeV. In the case of non-resonant HH searches, results are interpreted both in terms of sensitivity to the Standard Model and as limits on the Higgs boson self-coupling strength. Prospects of testing the Higgs boson...
We present the latest results from the CMS Collaboration on searches for new resonances that decay into two scalar bosons as well as for non-resonant production of two 125 GeV Higgs bosons. The presented searches consider decays of at least one of the scalars into a W boson or tau lepton, leading to final states like bbtautau and bbWW, amongst others.
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In this talk, the latest results from CMS for the search for non-resonant Higgs boson pair production in the final state with two b-quarks and two photons is presented. The analysis uses the full CMS Run 2 dataset and shows significant improvement from the previous CMS search, resulting in one of the most sensitive limits on non-resonant di-Higgs production at the LHC to date.
This presentation will provide an overview of the latest results from the CMS collaboration on searches for resonant and non-resonant Higgs boson pair production decaying into four bottom quarks. The chosen final state guarantees the largest branching ratio. Presented results are extracted from the dataset of proton-proton collisions at 13 TeV of center-of-mass energy collected during the...
Abstract:
Searches for pairs of Higgs bosons will be, in all likelihood, the best tools to precisely measure the Higgs boson self-coupling $\lambda_{hhh}$ in future colliders. We study various strategies for the $hh\to b \bar{b} b \bar{b}$ search in the HL-LHC era with focus on constraining $\lambda_{hhh}$. We implement a machine-learning-based approach to separate signal and background and...
