Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at √s = 8 TeV with ATLAS
Name
Aad-2014-Measurements of fidu.pdf
Size
1.17 MB
Format
Adobe PDF
Checksum (MD5)
acd4d70da91ab15d6dab391a7309f434
Author(s)
Taylor, Frank E.
Date Issued
September 2014
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag
Citation
Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, et al. “Measurements of Fiducial and Differential Cross Sections for Higgs Boson Production in the Diphoton Decay Channel at √s = 8 TeV with ATLAS.” J. High Energ. Phys. 2014, no. 9 (September 2014).
Version
Final published version
Abstract
Measurements of fiducial and differential cross sections are presented for Higgs boson production in proton-proton collisions at a centre-of-mass energy of √s = 8 TeV. The analysis is performed in the H → γγ decay channel using 20.3 fb[superscript −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 → γγ fiducial cross section is measured to be 43.2 ±9.4(stat.) [superscript +3.2 over -2.9] (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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/jhep09(2014)112
