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Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector

Publication ,  Journal Article
Aad, G; Abajyan, T; Abbott, B; Abdallah, J; Khalek, SA; Abdelalim, AA; Abdinov, O; Aben, R; Abi, B; Abolins, M; Abouzeid, OS; Abramowicz, H ...
Published in: Journal of High Energy Physics
January 1, 2013
Published version (DOI)

The ATLAS experiment at the LHC has measured the production cross section of events with two isolated photons in the final state, in proton-proton collisions at √s=7TeV . The full data set collected in 2011, corresponding to an integrated luminosity of 4.9 fb-1, is used. The amount of background, from hadronic jets and isolated electrons, is estimated with data-driven techniques and subtracted. The total cross section, for two isolated photons with transverse energies above 25 GeV and 22 GeV respectively, in the acceptance of the electromagnetic calorimeter (|η| < 1.37 and 1.52 < |η| < 2.37) and with an angular separation ΔR > 0.4, is 44.0-4.2+3.2 pb. The differential cross sections as a function of the di-photon invariant mass, transverse momentum, azimuthal separation, and cosine of the polar angle of the largest transverse energy photon in the Collins-Soper di-photon rest frame are also measured. The results are compared to the prediction of leading-order parton-shower and next-to-leading-order and next-to-next-to-leading-order parton-level generators.[Figure not available: see fulltext.] © 2013 CERN for the benefit of the ATLAS collaboration.

Duke Scholars

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

Journal of High Energy Physics

DOI

10.1007/JHEP01(2013)086

EISSN

1029-8479

ISSN

1126-6708

Publication Date

January 1, 2013

Volume

2013

Issue

1

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
 

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Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., Abdelalim, A. A., … Arik, E. (2013). Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector. Journal of High Energy Physics, 2013(1). https://doi.org/10.1007/JHEP01(2013)086
Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. A. Khalek, A. A. Abdelalim, O. Abdinov, et al. “Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector.” Journal of High Energy Physics 2013, no. 1 (January 1, 2013). https://doi.org/10.1007/JHEP01(2013)086.
Aad G, Abajyan T, Abbott B, Abdallah J, Khalek SA, Abdelalim AA, et al. Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector. Journal of High Energy Physics. 2013 Jan 1;2013(1).
Aad, G., et al. “Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector.” Journal of High Energy Physics, vol. 2013, no. 1, Jan. 2013. Scopus, doi:10.1007/JHEP01(2013)086.
Aad G, Abajyan T, Abbott B, Abdallah J, Khalek SA, Abdelalim AA, Abdinov O, Aben R, Abi B, Abolins M, Abouzeid OS, Abramowicz H, Abreu H, Acharya BS, Adamczyk L, Adams DL, Addy TN, Adelman J, Adomeit S, Adragna P, Adye T, Aefsky S, Aguilar-Saavedra JA, Agustoni M, Aharrouche M, Ahlen SP, Ahles F, Ahmad A, Ahsan M, Aielli G, Åkesson TPA, Akimoto G, Akimov AV, Alam MS, Alam MA, Albert J, Albrand S, Aleksa M, Aleksandrov IN, Alessandria F, Alexa C, Alexander G, Alexandre G, Alexopoulos T, Alhroob M, Aliev M, Alimonti G, Alison J, Allbrooke BMM, Allport PP, Allwood-Spiers SE, Almond J, Aloisio A, Alon R, Alonso A, Alonso F, Altheimer A, Gonzalez BA, Alviggi MG, Amako K, Amelung C, Ammosov VV, Amor Dos Santos SP, Amorim A, Amram N, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders G, Anderson KJ, Andreazza A, Andrei V, Andrieux ML, Anduaga XS, Angelidakis S, Anger P, Angerami A, Anghinolfi F, Anisenkov A, Anjos N, Annovi A, Antonaki A, Antonelli M, Antonov A, Antos J, Anulli F, Aoki M, Aoun S, Aperio Bella L, Apolle R, Arabidze G, Aracena I, Arai Y, Arce ATH, Arfaoui S, Arguin JF, Argyropoulos S, Arik E. Measurement of isolated-photon pair production in pp collisions at √s=7TeV with the ATLAS detector. Journal of High Energy Physics. 2013 Jan 1;2013(1).
Journal cover image

Published In

Journal of High Energy Physics

DOI

10.1007/JHEP01(2013)086

EISSN

1029-8479

ISSN

1126-6708

Publication Date

January 1, 2013

Volume

2013

Issue

1

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