Search for lepton-flavour-violating H → µτ decays of the Higgs boson with the ATLAS detector

ATLAS Collaboration

doi:10.1007/JHEP11(2015)211

Search for lepton-flavour-violating H → µτ decays of the Higgs boson with the ATLAS detector

ATLAS Collaboration

Physics and Astronomy

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

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Abstract

A direct search for lepton-flavour-violating H → µτ decays of the recently
discovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis is
performed in the H → µτhad channel, where τhad is a hadronically decaying τ -lepton. The
search is based on the data sample of proton-proton collisions collected by the ATLAS experiment corresponding to an integrated luminosity of 20.3 fb−1 at a centre-of-mass energy of √s = 8 TeV. No statistically significant excess of data over the predicted background is observed. The observed (expected) 95% confidence-level upper limit on the branching fraction, Br(H → µτ ), is 1.85% (1.24%).

Original language	English
Journal	Journal of High Energy Physics
Volume	211
Early online date	30 Nov 2015
DOIs	https://doi.org/10.1007/JHEP11(2015)211
Publication status	Published - 30 Nov 2015

Bibliographical note

Comments: 15 pages plus author list + cover pages (31 pages total), 3 figures, 3 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-08/

Keywords

Hadron-Hadron Scattering
Beyond Standard Model
Higgs physics
Lepton production

Access to Document

10.1007/JHEP11(2015)211Licence: Creative Commons: Attribution (CC BY)

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PPGP Capital Equipment Call
Newman, P. (Principal Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/10/13 → 30/09/14
Project: Research Councils
ATLAS - UK Tracker Upgrade
Newman, P. (Principal Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/10/12 → 30/09/13
Project: Research Councils
2012 Consolidated Grant Supplement
Newman, P. (Principal Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/10/12 → 31/03/14
Project: Research Councils
Birmimgham Experimental Particle Physics Consolidated Grant
Newman, P. (Principal Investigator), Charlton, D. (Co-Investigator), Hawkes, C. (Co-Investigator), Lazzeroni, C. (Co-Investigator), Nikolopoulos, K. (Co-Investigator), Watson, A. (Co-Investigator), Watson, N. (Co-Investigator) & Wilson, J. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/10/12 → 30/09/16
Project: Research Councils
Wakeham Efficiency Saving PP
Newman, P. (Principal Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
9/03/12 → 31/03/12
Project: Research Councils
Experimental Particle Physics 2009-2014
Newman, P. (Principal Investigator), Charlton, D. (Co-Investigator), Hawkes, C. (Co-Investigator), Watkins, P. (Co-Investigator), Watson, A. (Co-Investigator), Watson, N. (Co-Investigator), Wilson, J. (Co-Investigator) & Lazzeroni, C. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/10/09 → 30/09/12
Project: Research Councils
Experimental Particle Physics 2006-2011
Watkins, P. (Principal Investigator), Charlton, D. (Co-Investigator), Evans, P. (Co-Investigator), Hawkes, C. (Co-Investigator), Newman, P. (Co-Investigator), Watson, A. (Co-Investigator), Watson, N. (Co-Investigator) & Wilson, J. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/10/06 → 30/09/11
Project: Research Councils

Cite this

@article{e1588181a8c642ed8e95959970c67997,

title = "Search for lepton-flavour-violating H → µτ decays of the Higgs boson with the ATLAS detector",

abstract = "A direct search for lepton-flavour-violating H → µτ decays of the recentlydiscovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis isperformed in the H → µτhad channel, where τhad is a hadronically decaying τ -lepton. Thesearch is based on the data sample of proton-proton collisions collected by the ATLAS experiment corresponding to an integrated luminosity of 20.3 fb−1 at a centre-of-mass energy of √s = 8 TeV. No statistically significant excess of data over the predicted background is observed. The observed (expected) 95% confidence-level upper limit on the branching fraction, Br(H → µτ ), is 1.85% (1.24%).",

keywords = "Hadron-Hadron Scattering, Beyond Standard Model, Higgs physics, Lepton production",

author = "{ATLAS Collaboration} and Paul Newman",

note = "Comments: 15 pages plus author list + cover pages (31 pages total), 3 figures, 3 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-08/",

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language = "English",

volume = "211",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

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T1 - Search for lepton-flavour-violating H → µτ decays of the Higgs boson with the ATLAS detector

AU - ATLAS Collaboration

AU - Newman, Paul

N1 - Comments: 15 pages plus author list + cover pages (31 pages total), 3 figures, 3 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-08/

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Y1 - 2015/11/30

N2 - A direct search for lepton-flavour-violating H → µτ decays of the recentlydiscovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis isperformed in the H → µτhad channel, where τhad is a hadronically decaying τ -lepton. Thesearch is based on the data sample of proton-proton collisions collected by the ATLAS experiment corresponding to an integrated luminosity of 20.3 fb−1 at a centre-of-mass energy of √s = 8 TeV. No statistically significant excess of data over the predicted background is observed. The observed (expected) 95% confidence-level upper limit on the branching fraction, Br(H → µτ ), is 1.85% (1.24%).

AB - A direct search for lepton-flavour-violating H → µτ decays of the recentlydiscovered Higgs boson with the ATLAS detector at the LHC is presented. The analysis isperformed in the H → µτhad channel, where τhad is a hadronically decaying τ -lepton. Thesearch is based on the data sample of proton-proton collisions collected by the ATLAS experiment corresponding to an integrated luminosity of 20.3 fb−1 at a centre-of-mass energy of √s = 8 TeV. No statistically significant excess of data over the predicted background is observed. The observed (expected) 95% confidence-level upper limit on the branching fraction, Br(H → µτ ), is 1.85% (1.24%).

KW - Hadron-Hadron Scattering

KW - Beyond Standard Model

KW - Higgs physics

KW - Lepton production

U2 - 10.1007/JHEP11(2015)211

DO - 10.1007/JHEP11(2015)211

M3 - Article

SN - 1126-6708

VL - 211

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

ER -

Search for lepton-flavour-violating H → µτ decays of the Higgs boson with the ATLAS detector

Abstract

Bibliographical note

Keywords

Access to Document

Fingerprint

Projects

PPGP Capital Equipment Call

ATLAS - UK Tracker Upgrade

2012 Consolidated Grant Supplement

Birmimgham Experimental Particle Physics Consolidated Grant

Wakeham Efficiency Saving PP

Experimental Particle Physics 2009-2014

Experimental Particle Physics 2006-2011

Cite this