Search for a Standard Model Higgs boson in the channel with the ATLAS experiment

This document presents a brief overview of some of the experimental techniques employed by the ATLAS experiment at the CERN Large Hadron Collider (LHC) in the search for the Higgs boson predicted by the standard model (SM) of particle physics. The data and the statistical analyses that allowed in July 2012, only few days before this presentation at the Marcel Grossman Meeting, to firmly establish the observation of a new particle are described. The additional studies needed to check the consistency between the newly discovered particle and the Higgs boson are also discussed.

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An Investigation of Signal Kinematical Region to Study Standard Model Higgs Boson Properties in the H → WW* → ℓvℓv Decay Channel in the ATLAS Experiment at the Large Hadron Collider at 13 TeV

Physics of Atomic Nuclei ◽

10.1134/s106377881912024x ◽

2019 ◽

Vol 82 (12) ◽

pp. 1696-1700

Author(s):

E. N. Ramakoti ◽

A. A. Gavrilyuk ◽

I. I. Tsukerman

Keyword(s):

Higgs Boson ◽

Large Hadron Collider ◽

Standard Model ◽

Decay Channel ◽

Hadron Collider ◽

Kinematical Region ◽

Standard Model Higgs Boson ◽

Atlas Experiment

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Search for the standard model Higgs boson decaying to four lepton final states at the ATLAS experiment

Journal of Physics Conference Series ◽

10.1088/1742-6596/110/12/122008 ◽

2008 ◽

Vol 110 (12) ◽

pp. 122008

Author(s):

N Kerschen

Keyword(s):

Higgs Boson ◽

Standard Model ◽

Standard Model Higgs Boson ◽

Final States ◽

Atlas Experiment ◽

Higgs Boson Decaying ◽

The Standard Model

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INVESTIGATION OF HIGGS BOSONS IN THE LOW MASS REGION WITH ATLAS

International Journal of Modern Physics A ◽

10.1142/s0217751x0502656x ◽

2005 ◽

Vol 20 (15) ◽

pp. 3356-3358

Author(s):

◽

STEPHANIE BAFFIONI

Keyword(s):

Higgs Boson ◽

Standard Model ◽

Mass Region ◽

Higgs Bosons ◽

Radiative Corrections ◽

Standard Model Higgs Boson ◽

Atlas Experiment ◽

Electroweak Radiative Corrections ◽

Discovery Potential ◽

Low Mass

The present constraints from electroweak radiative corrections suggest that the low mass region will be particularly interesting in future Higgs boson searches. In this paper, the discovery potential for a search of a low mass Standard Model Higgs boson, as well as the sensitivity to the lightest Higgs boson of the MSSM (h) are presented as a function of the collected luminosity, for the ATLAS experiment at the LHC.

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Search for low mass Standard Model Higgs boson at Tevatron Run II

10.3360/dis.2008.136 ◽

2008 ◽

Author(s):

Boris Tuchming

Keyword(s):

Higgs Boson ◽

Standard Model ◽

Standard Model Higgs Boson ◽

Low Mass

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Search for π0 decays to invisible particles

Journal of High Energy Physics ◽

10.1007/jhep02(2021)201 ◽

2021 ◽

Vol 2021 (2) ◽

Cited By ~ 1

Author(s):

E. Cortina Gil ◽

◽

A. Kleimenova ◽

E. Minucci ◽

S. Padolski ◽

...

Keyword(s):

Higgs Boson ◽

Standard Model ◽

Confidence Level ◽

Branching Ratio ◽

Standard Model Higgs Boson ◽

Scalar Mixing ◽

Upper Limit ◽

Upper Limits ◽

The Standard Model ◽

Model Independent

Abstract The NA62 experiment at the CERN SPS reports a study of a sample of 4 × 109 tagged π0 mesons from K+ → π+π0(γ), searching for the decay of the π0 to invisible particles. No signal is observed in excess of the expected background fluctuations. An upper limit of 4.4 × 10−9 is set on the branching ratio at 90% confidence level, improving on previous results by a factor of 60. This result can also be interpreted as a model- independent upper limit on the branching ratio for the decay K+ → π+X, where X is a particle escaping detection with mass in the range 0.110–0.155 GeV/c2 and rest lifetime greater than 100 ps. Model-dependent upper limits are obtained assuming X to be an axion-like particle with dominant fermion couplings or a dark scalar mixing with the Standard Model Higgs boson.

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