Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1103/PhysRevD.90.112015

Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

ATLAS Collaboration

Department of Physics

Aix-Marseille Université
University of Oklahoma
Academia Sinica - Institute of Physics
Université Paris-Sud
Azerbaijan National Academy of Sciences
University of Amsterdam
Oklahoma State University
Michigan State University
University of Toronto
Tel Aviv University
Technion-Israel Institute of Technology
CERN
Stockholm University
Oskar Klein Centre
National Institute for Nuclear Physics
King's College London
Abdus Salam International Centre for Theoretical Physics
AGH University of Krakow
Brookhaven National Laboratory
Yale University
Ludwig Maximilian University of Munich
Rutherford Appleton Laboratory
University of Belgrade
Laboratório de Instrumentação e Física Experimental de Partículas
University of Granada
University of Bern
Boston University
Joint Institute for Nuclear Research
University of Rome Tor Vergata
Lund University
The University of Tokyo
RAS - P.N. Lebedev Physics Institute
University of Bologna
University of Victoria BC
Université Grenoble Alpes
Instituto de Física La Plata
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Geneva
National Technical University of Athens
University of Udine
The University of Chicago
University of Birmingham
Lancaster University
University of Liverpool
University of Naples Federico II
University of Copenhagen

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281 Scopus citations

Abstract

A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 4.5 fb^-1of proton-proton collisions data at √s = 7 TeV and 20.3 fb^-1at √s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called the signal strength, is found to be μ = 1.17 ± 0.27 at the value of the Higgs boson mass measured by ATLAS, m_H= 125.4 GeV. The analysis is optimized to measure the signal strengths for individual Higgs boson production processes at this value of m_H. They are found to be μ_ggF= 1.32 ± 0.38, μ_VBF= 0.8 ± 0.7, μ_WH= 1.0 ± 1.6, μ_ZH= 0.1^+3.7 _-0.1, and μ_tt¯H= 1.6^+2.7 _-1.8, for Higgs boson production through gluon fusion, vector-boson fusion, and in association with a W or Z boson or a top-quark pair, respectively. Compared with the previously published ATLAS analysis, the results reported here also benefit from a new energy calibration procedure for photons and the subsequent reduction of the systematic uncertainty on the diphoton mass resolution. No significant deviations from the predictions of the Standard Model are found.

Original language	English
Article number	112015
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	90
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.90.112015
State	Published - 24 Dec 2014

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10.1103/PhysRevD.90.112015

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@article{965edd7e2aee4a19b941fadc0bb99300,

title = "Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector",

abstract = "A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 4.5 fb-1of proton-proton collisions data at √s = 7 TeV and 20.3 fb-1at √s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called the signal strength, is found to be μ = 1.17 ± 0.27 at the value of the Higgs boson mass measured by ATLAS, mH= 125.4 GeV. The analysis is optimized to measure the signal strengths for individual Higgs boson production processes at this value of mH. They are found to be μggF= 1.32 ± 0.38, μVBF= 0.8 ± 0.7, μWH= 1.0 ± 1.6, μZH= 0.1+3.7 -0.1, and μtt¯H= 1.6+2.7 -1.8, for Higgs boson production through gluon fusion, vector-boson fusion, and in association with a W or Z boson or a top-quark pair, respectively. Compared with the previously published ATLAS analysis, the results reported here also benefit from a new energy calibration procedure for photons and the subsequent reduction of the systematic uncertainty on the diphoton mass resolution. No significant deviations from the predictions of the Standard Model are found.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and O. Abdinov and R. Aben and B. Abi and M. Abolins and \{Abou Zeid\}, \{O. S.\} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and J. Adelman and S. Adomeit and T. Adye and T. Agatonovic-Jovin and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and S. Albrand and \{Alconada Verzini\}, \{M. J.\} and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Allbrooke, \{B. M.M.\} and Allison, \{L. J.\} and Allport, \{P. P.\} and A. Aloisio and A. Alonso and F. Alonso and Lee, \{J. S.H.\}",

note = "Publisher Copyright: {\textcopyright} 2014 CERN, for the ATLAS Collaboration.",

year = "2014",

month = dec,

day = "24",

doi = "10.1103/PhysRevD.90.112015",

language = "English",

volume = "90",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

publisher = "American Physical Society",

number = "11",

}

TY - JOUR

T1 - Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - Abou Zeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Agatonovic-Jovin, T.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Allbrooke, B. M.M.

AU - Allison, L. J.

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso, A.

AU - Alonso, F.

AU - Lee, J. S.H.

PY - 2014/12/24

Y1 - 2014/12/24

N2 - A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 4.5 fb-1of proton-proton collisions data at √s = 7 TeV and 20.3 fb-1at √s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called the signal strength, is found to be μ = 1.17 ± 0.27 at the value of the Higgs boson mass measured by ATLAS, mH= 125.4 GeV. The analysis is optimized to measure the signal strengths for individual Higgs boson production processes at this value of mH. They are found to be μggF= 1.32 ± 0.38, μVBF= 0.8 ± 0.7, μWH= 1.0 ± 1.6, μZH= 0.1+3.7 -0.1, and μtt¯H= 1.6+2.7 -1.8, for Higgs boson production through gluon fusion, vector-boson fusion, and in association with a W or Z boson or a top-quark pair, respectively. Compared with the previously published ATLAS analysis, the results reported here also benefit from a new energy calibration procedure for photons and the subsequent reduction of the systematic uncertainty on the diphoton mass resolution. No significant deviations from the predictions of the Standard Model are found.

AB - A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 4.5 fb-1of proton-proton collisions data at √s = 7 TeV and 20.3 fb-1at √s = 8 TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called the signal strength, is found to be μ = 1.17 ± 0.27 at the value of the Higgs boson mass measured by ATLAS, mH= 125.4 GeV. The analysis is optimized to measure the signal strengths for individual Higgs boson production processes at this value of mH. They are found to be μggF= 1.32 ± 0.38, μVBF= 0.8 ± 0.7, μWH= 1.0 ± 1.6, μZH= 0.1+3.7 -0.1, and μtt¯H= 1.6+2.7 -1.8, for Higgs boson production through gluon fusion, vector-boson fusion, and in association with a W or Z boson or a top-quark pair, respectively. Compared with the previously published ATLAS analysis, the results reported here also benefit from a new energy calibration procedure for photons and the subsequent reduction of the systematic uncertainty on the diphoton mass resolution. No significant deviations from the predictions of the Standard Model are found.

UR - https://www.scopus.com/pages/publications/84919951043

U2 - 10.1103/PhysRevD.90.112015

DO - 10.1103/PhysRevD.90.112015

M3 - Article

AN - SCOPUS:84919951043

SN - 1550-7998

VL - 90

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 11

M1 - 112015

ER -

Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

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