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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.] © 2016, The Author(s).

Registro:

Documento: Artículo
Título:Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector
Autor:The ATLAS collaboration et al.
Este artículo contiene 2862 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2862 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Beyond Standard Model; Hadron-Hadron scattering (experiments); Hard scattering; Particle and resonance production; proton-proton scattering
Año:2016
Volumen:2016
Número:9
DOI: http://dx.doi.org/10.1007/JHEP09(2016)001
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2016_n9_p_TheATLAScollaboration

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Citas:

---------- APA ----------
(2016) . Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics, 2016(9).
http://dx.doi.org/10.1007/JHEP09(2016)001
---------- CHICAGO ----------
The ATLAS collaboration. "Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector" . Journal of High Energy Physics 2016, no. 9 (2016).
http://dx.doi.org/10.1007/JHEP09(2016)001
---------- MLA ----------
The ATLAS collaboration. "Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector" . Journal of High Energy Physics, vol. 2016, no. 9, 2016.
http://dx.doi.org/10.1007/JHEP09(2016)001
---------- VANCOUVER ----------
The ATLAS collaboration. Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector. J. High Energy Phys. 2016;2016(9).
http://dx.doi.org/10.1007/JHEP09(2016)001