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

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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...

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Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Física
standard model
hadron-hadron scattering
hard scattering
particle production
resonance production
proton-proton scattering
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78483
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78483
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
standard model
hadron-hadron scattering
hard scattering
particle production
resonance production
proton-proton scattering
spellingShingle Física
standard model
hadron-hadron scattering
hard scattering
particle production
resonance production
proton-proton scattering
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for resonances in diphoton events at √s = 13 TeV with the ATLAS detector
topic_facet Física
standard model
hadron-hadron scattering
hard scattering
particle production
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.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
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 http://sedici.unlp.edu.ar/handle/10915/78483
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