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

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 ta...

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Publicado:	2016
Materias:	Beyond Standard Model Hadron-Hadron scattering (experiments) Hard scattering Particle and resonance production proton-proton scattering
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2016_n9_p_TheATLAScollaboration http://hdl.handle.net/20.500.12110/paper_11266708_v2016_n9_p_TheATLAScollaboration
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_11266708_v2016_n9_p_TheATLAScollaboration
record_format	dspace
spelling	paper:paper_11266708_v2016_n9_p_TheATLAScollaboration2023-06-08T16:08:48Z Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector Beyond Standard Model Hadron-Hadron scattering (experiments) Hard scattering Particle and resonance production proton-proton scattering 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.] © 2016, The Author(s). 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2016_n9_p_TheATLAScollaboration http://hdl.handle.net/20.500.12110/paper_11266708_v2016_n9_p_TheATLAScollaboration
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Beyond Standard Model Hadron-Hadron scattering (experiments) Hard scattering Particle and resonance production proton-proton scattering
spellingShingle	Beyond Standard Model Hadron-Hadron scattering (experiments) Hard scattering Particle and resonance production proton-proton scattering Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector
topic_facet	Beyond Standard Model Hadron-Hadron scattering (experiments) Hard scattering Particle and resonance production proton-proton scattering
description	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.] © 2016, The Author(s).
title	Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector
title_short	Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector
title_full	Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector
title_fullStr	Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector
title_full_unstemmed	Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector
title_sort	search for resonances in diphoton events at √s=13 tev with the atlas detector
publishDate	2016
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2016_n9_p_TheATLAScollaboration http://hdl.handle.net/20.500.12110/paper_11266708_v2016_n9_p_TheATLAScollaboration
_version_	1768542608889479168

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

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