Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/102204
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Measurement of Higgs boson production in the diphoton decay channel in pp collisions at center-of-mass energies of 7 and 8 TeV with the ATLAS detector
Author: Aad, G.
ATLAS Collaboration
Citation: Physical Review D, 2014; 90(11):112015- 1-112015-44
Publisher: American Physical Society
Issue Date: 2014
ISSN: 1550-7998
0556-2821
Statement of
Responsibility: 
G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... et al. (ATLAS Collaboration)
Abstract: A measurement of the production processes of the recently discovered Higgs boson is performed in the two-photon final state using 4.5  fb⁻¹ of proton-proton collisions data at √s=7  TeV and 20.3  fb⁻¹ at √s=8  TeV collected by the ATLAS detector at the Large Hadron Collider. The number of observed Higgs boson decays to diphotons divided by the corresponding Standard Model prediction, called the signal strength, is found to be μ=1.17±0.27 at the value of the Higgs boson mass measured by ATLAS, mH=125.4  GeV. The analysis is optimized to measure the signal strengths for individual Higgs boson production processes at this value of mH. They are found to be μggF=1.32±0.38, μVBF=0.8±0.7, μWH=1.0±1.6, μZH=0.1+3.7−0.1, and μtt¯H=1.6+2.7−1.8, for Higgs boson production through gluon fusion, vector-boson fusion, and in association with a W or Z boson or a top-quark pair, respectively. Compared with the previously published ATLAS analysis, the results reported here also benefit from a new energy calibration procedure for photons and the subsequent reduction of the systematic uncertainty on the diphoton mass resolution. No significant deviations from the predictions of the Standard Model are found.
Rights: © 2014 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.
RMID: 0030024217
DOI: 10.1103/PhysRevD.90.112015
Published version: http://journals.aps.org/prd/abstract/10.1103/PhysRevD.90.112015
Appears in Collections:Physics publications

Files in This Item:
File Description SizeFormat 
hdl_102204.pdfPublished Version1.68 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.