Measurements of Higgs boson properties in the diphoton decay channel in proton-proton collisions at √s=13 TeV



Sirunyan, AM, Tumasyan, A, Adam, W, Ambrogi, F, Asilar, E, Bergauer, T, Brandstetter, J, Brondolin, E, Dragicevic, M, Eroe, J
et al (show 2291 more authors) (2018) Measurements of Higgs boson properties in the diphoton decay channel in proton-proton collisions at √s=13 TeV. JOURNAL OF HIGH ENERGY PHYSICS, 2018 (11).

Access the full-text of this item by clicking on the Open Access link.

Abstract

<jats:title>A<jats:sc>bstract</jats:sc> </jats:title> <jats:p>Measurements of Higgs boson properties in the H → <jats:italic>γγ</jats:italic> decay channel are reported. The analysis is based on data collected by the CMS experiment in proton-proton collisions at <jats:inline-formula> <jats:alternatives> <jats:tex-math>$$ \sqrt{s}=13 $$</jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>13</mml:mn> </mml:math> </jats:alternatives> </jats:inline-formula> TeV during the 2016 LHC running period, corresponding to an integrated luminosity of 35.9 fb<jats:sup>−1</jats:sup>. Allowing the Higgs mass to float, the measurement yields a signal strength relative to the standard model prediction of 1.18 <jats:sub>− 0.14</jats:sub> <jats:sup>+ 0.17</jats:sup>  = 1.18 <jats:sub>− 0.11</jats:sub> <jats:sup>+ 0.12</jats:sup> (stat) <jats:sub>− 0.07</jats:sub> <jats:sup>+ 0.09</jats:sup> (syst) <jats:sub>− 0.06</jats:sub> <jats:sup>+ 0.07</jats:sup> (theo), which is largely insensitive to the exact Higgs mass around 125 GeV. Signal strengths associated with the different Higgs boson production mechanisms, couplings to bosons and fermions, and effective couplings to photons and gluons are also measured. </jats:p>

Item Type: Article
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), Higgs physics, Photon production
Depositing User: Symplectic Admin
Date Deposited: 21 Feb 2019 15:46
Last Modified: 13 Oct 2023 15:04
DOI: 10.1007/JHEP11(2018)185
Open Access URL: https://doi.org/10.1007/JHEP11(2018)185
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3033223