ATLAS_Collaboration_Measurements_of_fiducial_and_differential_cross_sections_for_Higgs_boson_production_etc.pdf (1.15 MB)
Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at sv=8 TeV with ATLAS
journal contribution
posted on 2023-06-08, 21:41 authored by Alessandro CerriAlessandro Cerri, C Chavez Barajas, Antonella De SantoAntonella De Santo, Z J Grout, C T Potter, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, Y Shehu, Mark SuttonMark Sutton, Iacopo Vivarelli, others (ATLAS collaboration)Measurements of fiducial and differential cross sections are presented for Higgs boson production in proton-proton collisions at a centre-of-mass energy of sv=8 TeV. The analysis is performed in the H ? ?? decay channel using 20.3 fb-1 of data recorded by the ATLAS experiment at the CERN Large Hadron Collider. The signal is extracted using a fit to the diphoton invariant mass spectrum assuming that the width of the resonance is much smaller than the experimental resolution. The signal yields are corrected for the effects of detector inefficiency and resolution. The pp ? H ? ?? fiducial cross section is measured to be 43.2 ±9.4(stat.) -?2.9 +?3.2 (syst.) ±1.2(lumi)fb for a Higgs boson of mass 125.4GeV decaying to two isolated photons that have transverse momentum greater than 35% and 25% of the diphoton invariant mass and each with absolute pseudorapidity less than 2.37. Four additional fiducial cross sections and two cross-section limits are presented in phase space regions that test the theoretical modelling of different Higgs boson production mechanisms, or are sensitive to physics beyond the Standard Model. Differential cross sections are also presented, as a function of variables related to the diphoton kinematics and the jet activity produced in the Higgs boson events. The observed spectra are statistically limited but broadly in line with the theoretical expectations.
Funding
Consolidated Grant; G0927; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/K001329/1
History
Publication status
- Published
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- Published version
Journal
Journal of High Energy PhysicsISSN
1029-8479Publisher
Institute of PhysicsExternal DOI
Issue
9Volume
2014Department affiliated with
- Physics and Astronomy Publications
Notes
Part of the ATLAS CollaborationFull text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2015-07-17First Open Access (FOA) Date
2015-07-17First Compliant Deposit (FCD) Date
2015-07-17Usage metrics
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