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Open AccessJournal ArticleDOI

Search for a light charged Higgs boson in top quark decays in pp collisions at √s = 7 TeV

S. Chatrchyan, +2332 more
- 24 Jul 2012 - 
- Vol. 2012, Iss: 7, pp 143
TLDR
In this article, a search for a light charged Higgs boson that can be produced in the decay of the top quark to charged H and b quark and which, in turn, decays into tau and tau neutrino is presented.
Abstract
Results are presented on a search for a light charged Higgs boson that can be produced in the decay of the top quark to charged H and b quark and which, in turn, decays into tau and tau neutrino. The analysed data correspond to an integrated luminosity of about 2 inverse femtobarns recorded in proton-proton collisions at sqrt(s) = 7 TeV by the CMS experiment at the LHC. The search is sensitive to the decays of the top quark pairs t anti-t to charged Higgs W b anti-b and t anti-t to charged Higgs b anti-b. Various final states have been studied separately, all requiring presence of a tau lepton from charged Higgs decays, missing transverse energy, and multiple jets. Upper limits on the branching fraction B(t to charged Higgs b) in the range of 2-3% are established for charged Higgs boson masses between 80 and 160 GeV, under the assumption that B(charged Higgs to tau anti-tau neutrino) = 1.

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Posted ContentDOI

Handbook of LHC Higgs Cross Sections: 3. Higgs Properties

Sven Heinemeyer, +156 more
TL;DR: In 2012 and the first half of 2013, the LHC Higgs Cross Section Working Group as mentioned in this paper presented the state of the art of Higgs physics at the Large Hadron Collider (LHC), integrating all new results that have appeared in the last few years.
Journal ArticleDOI

Update of the global electroweak fit and constraints on two-Higgs-doublet models

TL;DR: In this article, an update of the global fit of the Standard Model electroweak sector to latest experimental results is presented, including new kinematic top quark and W boson mass measurements from the LHC, a $$\sin \!^2\theta ^{\ell }_{\mathrm{eff}}$$ result from the Tevatron, and a new evaluation of the hadronic contribution to $$\alpha (M_Z^2)
Journal ArticleDOI

Global fit to Higgs signal strengths and couplings and implications for extended Higgs sectors

TL;DR: In this article, the authors derived the combined confidence level contours for the signal strengths in the (gluon fusion + ttH associated production) versus (vector boson fusion plus VH associated manufacturing) space.
Journal ArticleDOI

Dark matter in the inert doublet model after the discovery of a Higgs-like boson at the LHC

TL;DR: In this paper, the authors examined the Inert Doublet Model in light of the discovery of a Higgs-like boson with a mass of roughly 126 GeV at the LHC.
Journal ArticleDOI

MSSM Higgs boson searches at the LHC: benchmark scenarios after the discovery of a Higgs-like particle

TL;DR: In this article, a Higgs-like particle with a mass of about 125.5 GeV has been discovered at the LHC, which is compatible with both the predictions for the Standard Model (SM) Higgs boson and with the Higgs sector in the MSSM.
References
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Journal ArticleDOI

Geant4—a simulation toolkit

S. Agostinelli, +126 more
TL;DR: The Gelfant 4 toolkit as discussed by the authors is a toolkit for simulating the passage of particles through matter, including a complete range of functionality including tracking, geometry, physics models and hits.
Journal ArticleDOI

PYTHIA 6.4 Physics and Manual

TL;DR: The Pythia program as mentioned in this paper can be used to generate high-energy-physics ''events'' (i.e. sets of outgoing particles produced in the interactions between two incoming particles).
Journal ArticleDOI

Geant4 developments and applications

TL;DR: GeGeant4 as mentioned in this paper is a software toolkit for the simulation of the passage of particles through matter, it is used by a large number of experiments and projects in a variety of application domains, including high energy physics, astrophysics and space science, medical physics and radiation protection.
Journal ArticleDOI

The anti-$k_t$ jet clustering algorithm

TL;DR: The anti-k-t algorithm as mentioned in this paper behaves like an idealised cone algorithm, in that jets with only soft fragmentation are conical, active and passive areas are equal, the area anomalous dimensions are zero, the non-global logarithms are those of a rigid boundary and the Milan factor is universal.
Journal ArticleDOI

The CMS experiment at the CERN LHC

S. Chatrchyan, +3175 more
TL;DR: The Compact Muon Solenoid (CMS) detector at the Large Hadron Collider (LHC) at CERN as mentioned in this paper was designed to study proton-proton (and lead-lead) collisions at a centre-of-mass energy of 14 TeV (5.5 TeV nucleon-nucleon) and at luminosities up to 10(34)cm(-2)s(-1)
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