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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
DOI10.1007/JHEP09(2016)001
关键词[WOS]COLLISIONS ; HIERARCHY ; MODEL
语种英语
WOS记录号WOS:000382979800001
引用统计
被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
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
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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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