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Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector

Publication ,  Journal Article
Aaboud, M; Aad, G; Abbott, B; Abdinov, O; Abeloos, B; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Abreu, R; Abulaiti, Y ...
Published in: Journal of High Energy Physics
November 1, 2017
Published version (DOI)

The cross section of a top-quark pair produced in association with a photon is measured in proton-proton collisions at a centre-of-mass energy of s=8 TeV with 20.2 fb−1 of data collected by the ATLAS detector at the Large Hadron Collider in 2012. The measurement is performed by selecting events that contain a photon with transverse momentum pT > 15 GeV, an isolated lepton with large transverse momentum, large missing transverse momentum, and at least four jets, where at least one is identified as originating from a b-quark. The production cross section is measured in a fiducial region close to the selection requirements. It is found to be 139 ± 7 (stat.) ± 17 (syst.) fb, in good agreement with the theoretical prediction at next-to-leading order of 151 ± 24 fb. In addition, differential cross sections in the fiducial region are measured as a function of the transverse momentum and pseudorapidity of the photon.[Figure not available: see fulltext.].

Duke Scholars

Ayana T. Arce
Author Ayana T. Arce Physics
Ashutosh V. Kotwal
Author Ashutosh V. Kotwal Physics
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Published In

Journal of High Energy Physics

DOI

10.1007/JHEP11(2017)086

EISSN

1029-8479

ISSN

1126-6708

Publication Date

November 1, 2017

Volume

2017

Issue

11

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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Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., … Armbruster, A. J. (2017). Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector. Journal of High Energy Physics, 2017(11). https://doi.org/10.1007/JHEP11(2017)086
Aaboud, M., G. Aad, B. Abbott, O. Abdinov, B. Abeloos, S. H. Abidi, O. S. AbouZeid, et al. “Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector.” Journal of High Energy Physics 2017, no. 11 (November 1, 2017). https://doi.org/10.1007/JHEP11(2017)086.
Aaboud M, Aad G, Abbott B, Abdinov O, Abeloos B, Abidi SH, et al. Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector. Journal of High Energy Physics. 2017 Nov 1;2017(11).
Aaboud, M., et al. “Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector.” Journal of High Energy Physics, vol. 2017, no. 11, Nov. 2017. Scopus, doi:10.1007/JHEP11(2017)086.
Aaboud M, Aad G, Abbott B, Abdinov O, Abeloos B, Abidi SH, AbouZeid OS, Abraham NL, Abramowicz H, Abreu H, Abreu R, Abulaiti Y, Acharya BS, Adachi S, Adamczyk L, Adelman J, Adersberger M, Adye T, Affolder AA, Agatonovic-Jovin T, Agheorghiesei C, Aguilar-Saavedra JA, Ahlen SP, Ahmadov F, Aielli G, Akatsuka S, Akerstedt H, Åkesson TPA, Akilli E, Akimov AV, Alberghi GL, Albert J, Albicocco P, Alconada Verzini MJ, Alderweireldt SC, 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, Alshehri AA, Alstaty MI, Alvarez Gonzalez B, Álvarez Piqueras D, Alviggi MG, Amadio BT, 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 JK, Anderson KJ, Andreazza A, Andrei V, Angelidakis S, Angelozzi I, Angerami A, Anisenkov AV, Anjos N, Annovi A, Antel C, Antonelli M, Antonov A, Antrim DJ, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Araujo Ferraz V, Arce ATH, Ardell RE, Arduh FA, Arguin JF, Argyropoulos S, Arik M, Armbruster AJ. Measurement of the tt¯ γ production cross section in proton-proton collisions at √s=8 TeV with the ATLAS detector. Journal of High Energy Physics. 2017 Nov 1;2017(11).
Journal cover image

Published In

Journal of High Energy Physics

DOI

10.1007/JHEP11(2017)086

EISSN

1029-8479

ISSN

1126-6708

Publication Date

November 1, 2017

Volume

2017

Issue

11

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