Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at TeV with ATLAS

	Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at TeV with ATLAS
	ATLAS collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2014
期号	9 页码:1-61
关键词	HADRON COLLIDERS QCD CORRECTIONS PARTON DISTRIBUTIONS MASSLESS PARTICLES BROKEN SYMMETRIES NNLO QCD LHC COLLISIONS DETECTOR SEARCH
通讯作者	Aad, G (reprint author), Aix Marseille Univ, CPPM, Marseille, France.
英文摘要	Measurements of fiducial and differential cross sections are presented for Higgs boson production in proton-proton collisions at a centre-of-mass energy of TeV. The analysis is performed in the H -> gamma gamma 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 -> gamma gamma fiducial cross section is measured to be 43.2 +/- 9.4(stat.) (-aEuro parts per thousand 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.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000343724600001
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213797]
专题	高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	ATLAS collaboration. Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at TeV with ATLAS[J]. JOURNAL OF HIGH ENERGY PHYSICS,2014(9):1-61.
APA	ATLAS collaboration.(2014).Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at TeV with ATLAS.JOURNAL OF HIGH ENERGY PHYSICS(9),1-61.
MLA	ATLAS collaboration."Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at TeV with ATLAS".JOURNAL OF HIGH ENERGY PHYSICS .9(2014):1-61.