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

Research output: Contribution to journalArticle


title = "Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector",
abstract = "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 proton-proton collision data corresponding to an integrated luminosity of 3.2 fb−1 at s=13 TeV 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 13 TeV and 8 TeV is also evaluated. Limits on the production cross section times branching ratio to two photons for the two resonance types are reported.[Figure not available: see fulltext.] {\textcopyright} 2016, The Author(s).",
keywords = "Beyond Standard Model, Hadron-Hadron scattering (experiments), Hard scattering, Particle and resonance production, proton-proton scattering",
author = "M Aaboud and G Aad and B. Abbott and J Abdallah and O Abdinov and B Abeloos and Torsten {\AA}kesson and Simona Bocchetta and LENE BRYNGEMARK and Caterina Doglioni and Anders Floderus and Vincent Hedberg and G{\"o}ran Jarlskog and Else Lytken and Ulf Mj{\"o}rnmark and Oxana Smirnova and Oleksandr Viazlo and {ATLAS Collaboration}",
note = "Cited By :10 Export Date: 21 July 2017",
year = "2016",
doi = "10.1007/JHEP09(2016)001",
language = "English",
volume = "2016",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer",
number = "9",