Search for resonances in diphoton events at root s=13TeV with the ATLAS detector

doi:10.1007/JHEP09(2016)001

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	Search for resonances in diphoton events at root s=13TeV with the ATLAS detector
	ATLAS Collaboration
	2016
发表期刊	JOURNAL OF HIGH ENERGY PHYSICS
期号	9
文章类型	Article
摘要	Searches for new resonances decaying into two photons in the ATLAS experiment at the CERN Large Hadron Collider are described. The analysis is based on protonproton collision data corresponding to an integrated luminosity of 3.2 fb(-1) at root s = 13TeV recorded in 2015. Two searches are performed, one targeted at a spin-2 particle of mass larger than 500 GeV, using Randall-Sundrum graviton states as a benchmark model, and one optimized for a spin-0 particle of mass larger than 200 GeV. Varying both the mass and the decay width, the most significant deviation from the background-only hypothesis is observed at a diphoton invariant mass around 750 GeV with local significances of 3.8 and 3.9 standard deviations in the searches optimized for a spin-2 and spin-0 particle, respectively. The global significances are estimated to be 2.1 standard deviations for both analyses. The consistency between the data collected at 13TeV and 8TeV is also evaluated. Limits on the production cross section times branching ratio to two photons for the two resonance types are reported.
关键词	Beyond Standard Model Hadron-Hadron scattering (experiments) Hard scattering Particle and resonance production proton-proton scattering
DOI	10.1007/JHEP09(2016)001
关键词[WOS]	COLLISIONS ; HIERARCHY ; MODEL
语种	英语
WOS记录号	WOS:000382979800001
引用统计
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/260912
专题	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. Search for resonances in diphoton events at root s=13TeV with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016(9).
APA	ATLAS Collaboration.(2016).Search for resonances in diphoton events at root s=13TeV with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS(9).
MLA	ATLAS Collaboration."Search for resonances in diphoton events at root s=13TeV with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS .9(2016).

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