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

نویسندگان

  • V. Khachatryan
  • A. M. Sirunyan
  • A. Tumasyan
  • W. Adam
  • T. Bergauer
  • M. Dragicevic
  • J. Erö
  • C. Fabjan
  • M. Friedl
  • R. Frühwirth
  • V. M. Ghete
  • C. Hartl
  • N. Hörmann
  • J. Hrubec
  • M. Jeitler
  • W. Kiesenhofer
  • V. Knünz
  • M. Krammer
  • I. Krätschmer
  • D. Liko
  • I. Mikulec
  • D. Rabady
  • B. Rahbaran
  • H. Rohringer
  • R. Schöfbeck
  • J. Strauss
  • A. Taurok
  • W. Treberer-Treberspurg
  • W. Waltenberger
  • C.-E. Wulz
  • V. Mossolov
  • N. Shumeiko
  • J. Suarez Gonzalez
  • S. Alderweireldt
  • M. Bansal
  • S. Bansal
  • T. Cornelis
  • E. A. De Wolf
  • X. Janssen
  • A. Knutsson
  • S. Luyckx
  • S. Ochesanu
  • B. Roland
  • R. Rougny
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  • H. Van Haevermaet
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  • A. Van Spilbeeck
  • F. Blekman
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  • J. D’Hondt
  • N. Daci
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  • J. Keaveney
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  • A. Olbrechts
  • Q. Python
  • D. Strom
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  • G. P. Van Onsem
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  • C. Caillol
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  • G. De Lentdecker
  • D. Dobur
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  • A. Léonard
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  • J. Wang
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  • S. Costantini
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چکیده

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[Formula: see text]at [Formula: see text] and 19.7[Formula: see text]at 8[Formula: see text] . A clear signal is observed in the diphoton channel at a mass close to 125[Formula: see text] with a local significance of [Formula: see text], where a significance of [Formula: see text] is expected for the standard model Higgs boson. The mass is measured to be [Formula: see text] , and the best-fit signal strength relative to the standard model prediction is [Formula: see text][Formula: see text][Formula: see text]. Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models.

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منابع مشابه

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

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−1at √ s = 7TeV and 19.7 fb−1at 8 TeV. A clear signal is...

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

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−1at √ s = 7TeV and 19.7 fb−1at 8 TeV. A clear signal is...

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

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...

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

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 = 7 TeV and 19.7 fb−1 at 8 TeV. A clear signal...

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Electroweak Baryogenesis, Electric Dipole Moments, and Higgs Diphoton Decays

Wei Chao and Michael J. Ramsey-Musolf 1 Amherst Center for Fundamental Interactions, Department of Physics, University of Massachusetts-Amherst Amherst, MA 01003 California Institute of Technology, Pasadena, CA USA Abstract We study the viability of electroweak baryogenesis in a two Higgs doublet model scenario augmented by vector-like, electroweakly interacting fermions. Considering a limited,...

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These proceedings report on a search for the Standard Model Higgs boson in the diphoton decay channel in proton-proton collisions at center-of-mass energies of √ s = 7TeV and √ s = 8TeV using integrated luminosities of 4.8fb−1 and 5.9fb−1, respectively, recorded with the ATLAS detector at the Large Hadron Collider. The search is performed for Higgs boson masses between 110 and 150GeV. The expec...

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عنوان ژورنال:

دوره 74  شماره 

صفحات  -

تاریخ انتشار 2014