A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector

ATLAS Publications; T.M. Carter; M. Faucci Giannelli; M.P. Heath; S. Palazzo; A. Søgaard; E. Takeva; N. Themistokleous; E.M. Villhauer

doi:10.1016/j.physletb.2020.135980

A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector

ATLAS Publications, T.M. Carter, M. Faucci Giannelli, M.P. Heath, S. Palazzo, A. Søgaard, E. Takeva, N. Themistokleous, E.M. Villhauer

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

A search for the dimuon decay of the Standard Model (SM) Higgs boson is performed using data corresponding to an integrated luminosity of 139 fb−1 collected with the ATLAS detector in Run 2 pp collisions at √s = 13 TeV at the Large Hadron Collider. The observed (expected) significance over the
background-only hypothesis for a Higgs boson with a mass of 125.09 GeV is 2.0σ (1.7σ ). The observed upper limit on the cross section times branching ratio for pp → H → μμ is 2.2 times the SM prediction at 95% confidence level, while the expected limit on a H → μμ signal assuming the absence (presence)
of a SM signal is 1.1 (2.0). The best-fit value of the signal strength parameter, defined as the ratio of the observed signal yield to the one expected in the SM, is μ = 1.2 ± 0.6.

Original language	English
Article number	135980
Pages (from-to)	1-24
Number of pages	24
Journal	Physics Letters B
Volume	812
Early online date	3 Dec 2020
DOIs	https://doi.org/10.1016/j.physletb.2020.135980
Publication status	Published - 10 Jan 2021

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http://arxiv.org/abs/2007.07830

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5 Finished

Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/04/23 → 30/09/25
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/10/22 → 30/09/25
Project: Research

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title = "A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector",

abstract = "A search for the dimuon decay of the Standard Model (SM) Higgs boson is performed using data corresponding to an integrated luminosity of 139 fb−1 collected with the ATLAS detector in Run 2 pp collisions at √s = 13 TeV at the Large Hadron Collider. The observed (expected) significance over the background-only hypothesis for a Higgs boson with a mass of 125.09 GeV is 2.0σ (1.7σ ). The observed upper limit on the cross section times branching ratio for pp → H → μμ is 2.2 times the SM prediction at 95\% confidence level, while the expected limit on a H → μμ signal assuming the absence (presence) of a SM signal is 1.1 (2.0). The best-fit value of the signal strength parameter, defined as the ratio of the observed signal yield to the one expected in the SM, is μ = 1.2 ± 0.6.",

author = "\{ATLAS Publications\} and Clark, \{Philip James\} and Sinead Farrington and Yanyan Gao and Christos Leonidopoulos and Martin, \{Victoria Jane\} and Liza Mijovic and Benjamin Wynne and T.M. Carter and \{Faucci Giannelli\}, M. and M.P. Heath and S. Palazzo and A. S{\o}gaard and E. Takeva and N. Themistokleous and E.M. Villhauer",

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T1 - A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector

AU - ATLAS Publications

AU - Clark, Philip James

AU - Farrington, Sinead

AU - Gao, Yanyan

AU - Leonidopoulos, Christos

AU - Martin, Victoria Jane

AU - Mijovic, Liza

AU - Wynne, Benjamin

AU - Carter, T.M.

AU - Faucci Giannelli, M.

AU - Heath, M.P.

AU - Palazzo, S.

AU - Søgaard, A.

AU - Takeva, E.

AU - Themistokleous, N.

AU - Villhauer, E.M.

PY - 2021/1/10

Y1 - 2021/1/10

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AB - A search for the dimuon decay of the Standard Model (SM) Higgs boson is performed using data corresponding to an integrated luminosity of 139 fb−1 collected with the ATLAS detector in Run 2 pp collisions at √s = 13 TeV at the Large Hadron Collider. The observed (expected) significance over the background-only hypothesis for a Higgs boson with a mass of 125.09 GeV is 2.0σ (1.7σ ). The observed upper limit on the cross section times branching ratio for pp → H → μμ is 2.2 times the SM prediction at 95% confidence level, while the expected limit on a H → μμ signal assuming the absence (presence) of a SM signal is 1.1 (2.0). The best-fit value of the signal strength parameter, defined as the ratio of the observed signal yield to the one expected in the SM, is μ = 1.2 ± 0.6.

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DO - 10.1016/j.physletb.2020.135980

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SP - 1

EP - 24

JO - Physics Letters B

JF - Physics Letters B

M1 - 135980

ER -

A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector

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Upgrade of the ATLAS detector at the LHC (2023-26)

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

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