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Measurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at √s=7 TeV with the ATLAS detector

Publication ,  Journal Article
Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Aben, R; Abolins, M; AbouZeid, OS; Abramowicz, H; Abreu, H; Abreu, R; Abulaiti, Y; Acharya, BS ...
Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
October 7, 2015
Published version (DOI)

This Letter reports a measurement of the exclusive γγ→ℓ+ℓ− (ℓ=e, μ) cross-section in proton–proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb−1. For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be σγγ→e+e−excl.=0.428 ± 0.035 (stat.) ± 0.018 (syst.) pb for a phase–space region with invariant mass of the electron pairs greater than 24 GeV, in which both electrons have transverse momentum pT>12 GeV and pseudorapidity |η|<2.4. For muon pairs with invariant mass greater than 20 GeV, muon transverse momentum pT>10 GeV and pseudorapidity |η|<2.4, the cross-section is determined to be σγγ→μ+μ−excl.=0.628 ± 0.032 (stat.) ± 0.021 (syst.) pb. When proton absorptive effects due to the finite size of the proton are taken into account in the theory calculation, the measured cross-sections are found to be consistent with the theory prediction.

Duke Scholars

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

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2015.07.069

ISSN

0370-2693

Publication Date

October 7, 2015

Volume

749

Start / End Page

242 / 261

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics
 

Citation

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Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M., … Artamonov, A. (2015). Measurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at √s=7 TeV with the ATLAS detector. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 749, 242–261. https://doi.org/10.1016/j.physletb.2015.07.069
Aad, G., B. Abbott, J. Abdallah, O. Abdinov, R. Aben, M. Abolins, O. S. AbouZeid, et al. “Measurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at √s=7 TeV with the ATLAS detector.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 749 (October 7, 2015): 242–61. https://doi.org/10.1016/j.physletb.2015.07.069.
Aad G, Abbott B, Abdallah J, Abdinov O, Aben R, Abolins M, et al. Measurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at √s=7 TeV with the ATLAS detector. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2015 Oct 7;749:242–61.
Aad, G., et al. “Measurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at √s=7 TeV with the ATLAS detector.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 749, Oct. 2015, pp. 242–61. Scopus, doi:10.1016/j.physletb.2015.07.069.
Aad G, Abbott B, Abdallah J, Abdinov O, Aben R, Abolins M, AbouZeid OS, 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, Alimonti G, Alio L, Alison J, Alkire SP, Allbrooke BMM, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Altheimer A, 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, Amram N, 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, Antonelli M, Antonov A, Antos J, 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, Arnaez O, Arnal V, Arnold H, Arratia M, Arslan O, Artamonov A. Measurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at √s=7 TeV with the ATLAS detector. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2015 Oct 7;749:242–261.
Journal cover image

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

10.1016/j.physletb.2015.07.069

ISSN

0370-2693

Publication Date

October 7, 2015

Volume

749

Start / End Page

242 / 261

Related Subject Headings

  • Nuclear & Particles Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0201 Astronomical and Space Sciences
  • 0105 Mathematical Physics