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The $\mathcal{CP}$ structure of the Higgs boson in its coupling to the particles of the Standard Model is amongst the most important Higgs boson properties which have not yet been constrained with high precision. In this study, all relevant…

High Energy Physics - Phenomenology · Physics 2021-10-20 Henning Bahl , Philip Bechtle , Sven Heinemeyer , Judith Katzy , Tobias Klingl , Krisztian Peters , Matthias Saimpert , Tim Stefaniak , Georg Weiglein

A new Higgs-like boson with mass around 126 GeV has recently been discovered at the LHC. The available data on this new particle is analyzed within the context of two-Higgs doublet models without tree-level flavour-changing neutral…

High Energy Physics - Phenomenology · Physics 2013-07-17 Alejandro Celis , Victor Ilisie , Antonio Pich

A search for heavy neutral Higgs bosons and $Z^{\prime}$ bosons is performed using a data sample corresponding to an integrated luminosity of 36.1 fb$^{-1}$ from proton-proton collisions at $\sqrt{s}$ = 13 TeV recorded by the ATLAS detector…

High Energy Physics - Experiment · Physics 2018-01-25 ATLAS Collaboration

An overview of the recent searches for Higgs boson pair production at the LHC was presented. The searches were based on approximately 140 $\mathrm{fb}^{-1}$ of data collected by the ATLAS and CMS experiments in proton-proton collisions at…

High Energy Physics - Experiment · Physics 2023-02-27 Nadezda Chernyavskaya

We present techniques used to estimate the backgrounds in the search for the Standard Model Higgs boson in the H->WW*->lvlv decay channel with the ATLAS experiment at the LHC. The dataset corresponds to 13 fb-1 of integrated luminosity…

High Energy Physics - Experiment · Physics 2019-08-13 Tomo Lazovich

The investigation of the mechanism responsible for electroweak symmetry breaking is one of the most important tasks of the scientific program of the Large Hadron Collider. The experimental results on the search of the Standard Model Higgs…

High Energy Physics - Experiment · Physics 2019-08-13 Aleandro Nisati

A search for a new heavy gauge boson W' decaying to an electron or muon, plus a low mass neutrino, is presented. This study uses data corresponding to an integrated luminosity of 5.0 inverse femtobarns, collected using the CMS detector in…

High Energy Physics - Experiment · Physics 2013-01-25 CMS Collaboration

A combination of searches for new heavy spin-1 resonances decaying into different pairings of $W$, $Z$, or Higgs bosons, as well as directly into leptons or quarks, is presented. The data sample used corresponds to 139 fb$^{-1}$ of…

High Energy Physics - Experiment · Physics 2024-05-20 ATLAS Collaboration

A search for neutral Higgs bosons of the Minimal Supersymmetric Standard Model (MSSM) and for a heavy neutral $Z^{\prime}$ boson is performed using a data sample corresponding to an integrated luminosity of 3.2 fb$^{-1}$ from proton--proton…

High Energy Physics - Experiment · Physics 2016-11-24 ATLAS Collaboration

A search for a standard-model-like Higgs boson in the H to WW and H to ZZ decay channels is reported, for Higgs boson masses in the range 145 < m[H] < 1000 GeV. The search is based upon proton-proton collision data samples corresponding to…

High Energy Physics - Experiment · Physics 2013-06-21 CMS Collaboration

The ATLAS Collaboration at the LHC continues investigating the possibility to detect particles predicted by Little Higgs models. In this talk, the latest results on the Z/W h decays and on the hadronic decays of the new gauge bosons Z_H/W_H…

High Energy Physics - Experiment · Physics 2011-04-11 Fabienne Ledroit

A search for new heavy resonances decaying to a pair of Higgs bosons (HH) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. Data were collected with the CMS detector at the LHC in 2016-2018, corresponding to an…

High Energy Physics - Experiment · Physics 2022-05-17 CMS Collaboration

ATLAS exclusion and discovery potentials of Standard Model Higgs boson searches at the LHC at 14 TeV, 10 TeV and 7 TeV center-of-mass energy are reviewed. For a LHC center-of-mass energy of 7 TeV and integrated luminosity of 1 fb$^{-1}$,…

High Energy Physics - Experiment · Physics 2019-08-14 I. Tsukerman

A search for resonant diboson production using a data sample corresponding to 4.7 fb-1 of integrated luminosity collected by the ATLAS experiment at the Large Hadron Collider in pp collisions at 7 TeV is presented. The search for a narrow…

High Energy Physics - Experiment · Physics 2013-06-25 ATLAS Collaboration

We evaluate the LHC's potential of observing Higgs boson decays into light elementary or composite resonances through their hadronic decay channels. We focus on the Higgs boson production processes with the largest cross sections, $pp\to h$…

High Energy Physics - Phenomenology · Physics 2016-09-28 Andrew S. Chisholm , Silvan Kuttimalai , Konstantinos Nikolopoulos , Michael Spannowsky

The search for the Higgs boson is entering a decisive phase. The Large Hadron Collider experiments have collected more than 1 fb$^{-1}$ of data and are now capable of efficiently probing the high Higgs mass region, $m_H > 140$ GeV. The low…

High Energy Physics - Phenomenology · Physics 2013-05-29 Marcela Carena , Patrick Draper , Tao Liu , Carlos Wagner

The LHC has delivered already 10/fb of proton proton collisions at a centre- of-mass energy of 7-8 TeV. With this data set, ATLAS and CMS have discovered a new boson at a mass of about 125 GeV and have searched for new physics at the TeV…

High Energy Physics - Experiment · Physics 2012-11-16 Gigi Rolandi

We consider the search for the Higgs boson at a high-luminosity Fermilab Tevatron, an upgraded Tevatron of energy 3.5 TeV, and the CERN Large Hadron Collider, via $WH/ZH$ production followed by H -> bb~ and leptonic decay of the weak vector…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. Stange , W. Marciano , S. Willenbrock

The CMS collaboration has recently produced results of a number of searches for new physics processes using data collected during the 2011 run of the Large Hadron Collider. Up to 5 inverse femtobarns of proton-proton collisions at 7 TeV…

High Energy Physics - Experiment · Physics 2019-08-13 Tommaso Dorigo

A search for Higgs boson decays into a $Z$ boson and a light resonance in two-lepton plus jet events is performed, using a $pp$ collision dataset with an integrated luminosity of 139 fb$^{-1}$ collected at $\sqrt{s}=13$ TeV by the ATLAS…

High Energy Physics - Experiment · Physics 2021-01-15 ATLAS Collaboration