Observation of the diphoton decay of the Higgs boson and measurement of its properties

the CMS Collaboration; Jim Brooke; Emyr Clement; David Cussans; Henning Flaecher; Robert Frazier; Joel Goldstein; Mark Grimes; Greg Heath; Luke Kreczko; Chris Lucas; Zhaoxia Meng; David Newbold; Sudarshan Paramesvaran; Sergey Senkin; Vincent Smith

doi:10.1140/epjc/s10052-014-3076-z

Observation of the diphoton decay of the Higgs boson and measurement of its properties

the CMS Collaboration, Jim Brooke, Emyr Clement, David Cussans, Henning Flaecher, Robert Frazier, Joel Goldstein, Mark Grimes, Greg Heath, Luke Kreczko, Chris Lucas, Zhaoxia Meng, David Newbold, Sudarshan Paramesvaran, Sergey Senkin, Vincent Smith

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Abstract

Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1 fb-1 at s√=7TeV and 19.7 fb-1 at 8 TeV. A clear signal is observed in the diphoton channel at a mass close to 125 GeV with a local significance of 5.7σ , where a significance of 5.2σ is expected for the standard model Higgs boson. The mass is measured to be 124.70±0.34GeV=124.70±0.31(stat)±0.15(syst)GeV , and the best-fit signal strength relative to the standard model prediction is 1.14+0.26−0.23=1.14±0.21(stat) +0.09−0.05(syst) +0.13−0.09(theo). Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models.

Original language	English
Article number	3076
Number of pages	49
Journal	European Physical Journal C: Particles and Fields
Volume	74
DOIs	https://doi.org/10.1140/epjc/s10052-014-3076-z
Publication status	Published - 15 Oct 2014

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GridPP Hardware Allocation 2013
Flaecher, H. U.
1/01/14 → 1/04/14
Project: Research
Consolidated Grant 2012-16
Newbold, D. M. & Rademacker, J. H.
1/10/12 → 1/10/16
Project: Research

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the CMS Collaboration, Brooke, J., Clement, E., Cussans, D., Flaecher, H., Frazier, R., Goldstein, J., Grimes, M., Heath, G., Kreczko, L., Lucas, C., Meng, Z., Newbold, D., Paramesvaran, S., Senkin, S., & Smith, V. (2014). Observation of the diphoton decay of the Higgs boson and measurement of its properties. European Physical Journal C: Particles and Fields, 74, [3076]. https://doi.org/10.1140/epjc/s10052-014-3076-z

@article{fa0d12cc7ed347e8a33a7bda0ffda4db,

title = "Observation of the diphoton decay of the Higgs boson and measurement of its properties",

abstract = "Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1 fb-1 at s√=7TeV and 19.7 fb-1 at 8 TeV. A clear signal is observed in the diphoton channel at a mass close to 125 GeV with a local significance of 5.7σ , where a significance of 5.2σ is expected for the standard model Higgs boson. The mass is measured to be 124.70±0.34GeV=124.70±0.31(stat)±0.15(syst)GeV , and the best-fit signal strength relative to the standard model prediction is 1.14+0.26−0.23=1.14±0.21(stat) +0.09−0.05(syst) +0.13−0.09(theo). Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models.",

author = "{the CMS Collaboration} and Vardan Khachatryan and Jim Brooke and Emyr Clement and David Cussans and Henning Flaecher and Robert Frazier and Joel Goldstein and Mark Grimes and Greg Heath and Heath, {Helen F} and Luke Kreczko and Chris Lucas and Zhaoxia Meng and David Newbold and Sudarshan Paramesvaran and Sergey Senkin and Vincent Smith",

year = "2014",

month = oct,

day = "15",

doi = "10.1140/epjc/s10052-014-3076-z",

language = "English",

volume = "74",

journal = "European Physical Journal C: Particles and Fields",

issn = "1434-6044",

publisher = "Springer Berlin Heidelberg",

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the CMS Collaboration, Brooke, J , Clement, E , Cussans, D , Flaecher, H, Frazier, R, Goldstein, J , Grimes, M, Heath, G, Kreczko, L, Lucas, C, Meng, Z, Newbold, D, Paramesvaran, S, Senkin, S & Smith, V 2014, 'Observation of the diphoton decay of the Higgs boson and measurement of its properties', European Physical Journal C: Particles and Fields, vol. 74, 3076. https://doi.org/10.1140/epjc/s10052-014-3076-z

TY - JOUR

T1 - Observation of the diphoton decay of the Higgs boson and measurement of its properties

AU - the CMS Collaboration

AU - Khachatryan, Vardan

AU - Brooke, Jim

AU - Clement, Emyr

AU - Cussans, David

AU - Flaecher, Henning

AU - Frazier, Robert

AU - Goldstein, Joel

AU - Grimes, Mark

AU - Heath, Greg

AU - Heath, Helen F

AU - Kreczko, Luke

AU - Lucas, Chris

AU - Meng, Zhaoxia

AU - Newbold, David

AU - Paramesvaran, Sudarshan

AU - Senkin, Sergey

AU - Smith, Vincent

PY - 2014/10/15

Y1 - 2014/10/15

N2 - Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1 fb-1 at s√=7TeV and 19.7 fb-1 at 8 TeV. A clear signal is observed in the diphoton channel at a mass close to 125 GeV with a local significance of 5.7σ , where a significance of 5.2σ is expected for the standard model Higgs boson. The mass is measured to be 124.70±0.34GeV=124.70±0.31(stat)±0.15(syst)GeV , and the best-fit signal strength relative to the standard model prediction is 1.14+0.26−0.23=1.14±0.21(stat) +0.09−0.05(syst) +0.13−0.09(theo). Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models.

AB - Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1 fb-1 at s√=7TeV and 19.7 fb-1 at 8 TeV. A clear signal is observed in the diphoton channel at a mass close to 125 GeV with a local significance of 5.7σ , where a significance of 5.2σ is expected for the standard model Higgs boson. The mass is measured to be 124.70±0.34GeV=124.70±0.31(stat)±0.15(syst)GeV , and the best-fit signal strength relative to the standard model prediction is 1.14+0.26−0.23=1.14±0.21(stat) +0.09−0.05(syst) +0.13−0.09(theo). Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models.

U2 - 10.1140/epjc/s10052-014-3076-z

DO - 10.1140/epjc/s10052-014-3076-z

M3 - Article (Academic Journal)

C2 - 25814871

SN - 1434-6044

VL - 74

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

M1 - 3076

ER -

Observation of the diphoton decay of the Higgs boson and measurement of its properties

Abstract

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GridPP Hardware Allocation 2013

Consolidated Grant 2012-16

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