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

Publication ,  Journal Article
The ATLAS collaboration; Aaboud, M; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; Aben, R; AbouZeid, OS; Abraham, NL; Abramowicz, H ...
Published in: Journal of High Energy Physics
September 1, 2016
Published version (DOI)

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.]

Duke Scholars

Ayana T. Arce
Author Ayana T. Arce Physics
Alfred T. Goshaw
Author Alfred T. Goshaw Physics
Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
Mark C. Kruse
Author Mark C. Kruse Physics
Seog Oh
Author Seog Oh Physics
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Published In

Journal of High Energy Physics

DOI

10.1007/JHEP09(2016)001

EISSN

1029-8479

ISSN

1126-6708

Publication Date

September 1, 2016

Volume

2016

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics
 

Citation

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MLA
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The ATLAS collaboration, Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., … Arnaez, O. (2016). Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics, 2016(9). https://doi.org/10.1007/JHEP09(2016)001
The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, J. Abdallah, O. Abdinov, B. Abeloos, et al. “Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector.” Journal of High Energy Physics 2016, no. 9 (September 1, 2016). https://doi.org/10.1007/JHEP09(2016)001.
The ATLAS collaboration, Aaboud M, Aad G, Abbott B, Abdallah J, Abdinov O, et al. Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics. 2016 Sep 1;2016(9).
The ATLAS collaboration, et al. “Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector.” Journal of High Energy Physics, vol. 2016, no. 9, Sept. 2016. Scopus, doi:10.1007/JHEP09(2016)001.
The ATLAS collaboration, Aaboud M, Aad G, Abbott B, Abdallah J, Abdinov O, Abeloos B, Aben R, AbouZeid OS, Abraham NL, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adamczyk L, Adams DL, Adelman J, Adomeit S, Adye T, Affolder AA, Agatonovic-Jovin T, Agricola J, Aguilar-Saavedra JA, Ahlen SP, Ahmadov F, Aielli G, Akerstedt H, Åkesson TPA, Akimov AV, Alberghi GL, Albert J, Albrand S, Alconada Verzini MJ, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexopoulos T, Alhroob M, Ali B, Aliev M, Alimonti G, Alison J, Alkire SP, Allbrooke BMM, Allen BW, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Alstaty M, Alvarez Gonzalez B, Álvarez Piqueras D, Alviggi MG, Amadio BT, Amako K, Amaral Coutinho Y, Amelung C, Amidei D, Amor Dos Santos SP, Amorim A, Amoroso S, Amundsen G, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anders JK, Anderson KJ, Andreazza A, Andrei V, Angelidakis S, Angelozzi I, Anger P, Angerami A, Anghinolfi F, Anisenkov AV, Anjos N, Annovi A, Antel C, Antonelli M, Antonov A, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Arce ATH, Arduh FA, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ, Armitage LJ, Arnaez O. Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics. 2016 Sep 1;2016(9).
Journal cover image

Published In

Journal of High Energy Physics

DOI

10.1007/JHEP09(2016)001

EISSN

1029-8479

ISSN

1126-6708

Publication Date

September 1, 2016

Volume

2016

Issue

9

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics