Measurement of the Higgs boson mass from the H → γγ and H → ZZ* → 4ℓ channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

G. Aad; ATLAS Collaboration

doi:10.1103/PhysRevD.90.052004

Measurement of the Higgs boson mass from the H → γγ and H → ZZ* → 4ℓ channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

G. Aad, ATLAS Collaboration

School of Physics and Astronomy

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

Abstract

An improved measurement of the mass of the Higgs boson is derived from a combined fit to the reconstructed invariant mass spectra of the decay channels H→γγ and H→ZZ*→4ℓ. The analysis uses the pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at center-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 25 fb⁻¹. The measured value of the Higgs boson mass is m_H=125.36 ± 0.37(stat) ± 0.18(syst) GeV. This result is based on improved energy-scale calibrations for photons, electrons, and muons as well as other analysis improvements, and supersedes the previous result from ATLAS. Upper limits on the total width of the Higgs boson are derived from fits to the invariant mass spectra of the H→γγ and H→ZZ*→4ℓ decay channels.

Original language	English
Article number	052004
Number of pages	35
Journal	Physical Review
Volume	90
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.90.052004
Publication status	Published - 9 Sep 2014

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Philip Clark
- p.j.clark@ed.ac.uk
- School of Physics and Astronomy - Personal Chair in Experimental Particle Physics
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title = "Measurement of the Higgs boson mass from the H → γγ and H → ZZ* → 4ℓ channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector",

abstract = "An improved measurement of the mass of the Higgs boson is derived from a combined fit to the reconstructed invariant mass spectra of the decay channels H→γγ and H→ZZ*→4ℓ. The analysis uses the pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at center-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 25 fb−1. The measured value of the Higgs boson mass is mH =125.36 ± 0.37(stat) ± 0.18(syst) GeV. This result is based on improved energy-scale calibrations for photons, electrons, and muons as well as other analysis improvements, and supersedes the previous result from ATLAS. Upper limits on the total width of the Higgs boson are derived from fits to the invariant mass spectra of the H→γγ and H→ZZ*→4ℓ decay channels.",

author = "G. Aad and {ATLAS Collaboration} and Clark, {P. J.} and C. Leonidopoulos and Martin, {V. J.} and C. Mills and Farrington, {S. M.}",

year = "2014",

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doi = "10.1103/PhysRevD.90.052004",

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T1 - Measurement of the Higgs boson mass from the H → γγ and H → ZZ* → 4ℓ channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

AU - Aad, G.

AU - ATLAS Collaboration

AU - Clark, P. J.

AU - Leonidopoulos, C.

AU - Martin, V. J.

AU - Mills, C.

AU - Farrington, S. M.

PY - 2014/9/9

Y1 - 2014/9/9

N2 - An improved measurement of the mass of the Higgs boson is derived from a combined fit to the reconstructed invariant mass spectra of the decay channels H→γγ and H→ZZ*→4ℓ. The analysis uses the pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at center-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 25 fb−1. The measured value of the Higgs boson mass is mH =125.36 ± 0.37(stat) ± 0.18(syst) GeV. This result is based on improved energy-scale calibrations for photons, electrons, and muons as well as other analysis improvements, and supersedes the previous result from ATLAS. Upper limits on the total width of the Higgs boson are derived from fits to the invariant mass spectra of the H→γγ and H→ZZ*→4ℓ decay channels.

AB - An improved measurement of the mass of the Higgs boson is derived from a combined fit to the reconstructed invariant mass spectra of the decay channels H→γγ and H→ZZ*→4ℓ. The analysis uses the pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at center-of-mass energies of 7 TeV and 8 TeV, corresponding to an integrated luminosity of 25 fb−1. The measured value of the Higgs boson mass is mH =125.36 ± 0.37(stat) ± 0.18(syst) GeV. This result is based on improved energy-scale calibrations for photons, electrons, and muons as well as other analysis improvements, and supersedes the previous result from ATLAS. Upper limits on the total width of the Higgs boson are derived from fits to the invariant mass spectra of the H→γγ and H→ZZ*→4ℓ decay channels.

U2 - 10.1103/PhysRevD.90.052004

DO - 10.1103/PhysRevD.90.052004

M3 - Article

VL - 90

JO - Physical Review

JF - Physical Review

SN - 0031-899X

IS - 5

M1 - 052004

ER -

Measurement of the Higgs boson mass from the H → γγ and H → ZZ* → 4ℓ channels in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector

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