Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$=7 and 8 TeV with the ATLAS detector

Philip James Clark; Victoria Jane Martin; Corrinne Mills; Atlas Collaboration

doi:10.1016/j.physletb.2014.03.015

Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$=7 and 8 TeV with the ATLAS detector

Philip James Clark
, Victoria Jane Martin
, Corrinne Mills
, Atlas Collaboration

School of Physics and Astronomy

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

Abstract

A search is reported for a neutral Higgs boson in the decay channel H→Zγ , Z→ℓ+ℓ− ( ℓ=e,μ ), using 4.5 fb −1 of pp collisions at s=7 TeV and 20.3 fb −1 of pp collisions at s=8 TeV , recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, mℓℓγ , is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for s=8 TeV at 95% confidence level.

Original language	English
Article number	Aad:2014fia
Pages (from-to)	8-27
Journal	Physics Letters B
Volume	B732
DOIs	https://doi.org/10.1016/j.physletb.2014.03.015
Publication status	Published - 1 May 2014

Access to Document

10.1016/j.physletb.2014.03.015

http://repo.scoap3.org/record/1621/files/main.pdfFinal published version, 1.14 MB

Cite this

@article{95e0f7dc24494cfb9f94693d37a6dd43,

title = "Search for Higgs boson decays to a photon and a Z boson in pp collisions at \$\textbackslash{}sqrt\{s\}\$=7 and 8 TeV with the ATLAS detector",

abstract = "A search is reported for a neutral Higgs boson in the decay channel H→Zγ , Z→ℓ+ℓ− ( ℓ=e,μ ), using 4.5 fb −1 of pp collisions at s=7 TeV and 20.3 fb −1 of pp collisions at s=8 TeV , recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, mℓℓγ , is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95\% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for s=8 TeV at 95\% confidence level.",

author = "Clark, \{Philip James\} and Martin, \{Victoria Jane\} and Corrinne Mills and Atlas Collaboration",

year = "2014",

month = may,

day = "1",

doi = "10.1016/j.physletb.2014.03.015",

language = "English",

volume = "B732",

pages = "8--27",

journal = "Physics Letters B",

issn = "1873-2445",

publisher = "Elsevier",

}

TY - JOUR

T1 - Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$=7 and 8 TeV with the ATLAS detector

AU - Clark, Philip James

AU - Martin, Victoria Jane

AU - Mills, Corrinne

AU - Collaboration, Atlas

PY - 2014/5/1

Y1 - 2014/5/1

N2 - A search is reported for a neutral Higgs boson in the decay channel H→Zγ , Z→ℓ+ℓ− ( ℓ=e,μ ), using 4.5 fb −1 of pp collisions at s=7 TeV and 20.3 fb −1 of pp collisions at s=8 TeV , recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, mℓℓγ , is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for s=8 TeV at 95% confidence level.

AB - A search is reported for a neutral Higgs boson in the decay channel H→Zγ , Z→ℓ+ℓ− ( ℓ=e,μ ), using 4.5 fb −1 of pp collisions at s=7 TeV and 20.3 fb −1 of pp collisions at s=8 TeV , recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, mℓℓγ , is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for s=8 TeV at 95% confidence level.

U2 - 10.1016/j.physletb.2014.03.015

DO - 10.1016/j.physletb.2014.03.015

M3 - Article

SN - 1873-2445

VL - B732

SP - 8

EP - 27

JO - Physics Letters B

JF - Physics Letters B

M1 - Aad:2014fia

ER -

Search for Higgs boson decays to a photon and a Z boson in pp collisions at $\sqrt{s}$=7 and 8 TeV with the ATLAS detector

Abstract

Access to Document

Fingerprint

Cite this