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Measurement of prompt photon production in sNN=8.16 TeV p + Pb collisions with ATLAS

Publication ,  Journal Article
Aaboud, M; Aad, G; Abbott, B; Abbott, DC; Abdinov, O; Abeloos, B; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; An, F ...
Published in: Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
September 10, 2019

The inclusive production rates of isolated, prompt photons in p+Pb collisions at sNN=8.16 TeV are studied with the ATLAS detector at the Large Hadron Collider using a dataset with an integrated luminosity of 165 nb−1 recorded in 2016. The cross-section and nuclear modification factor RpPb are measured as a function of photon transverse energy from 20 GeV to 550 GeV and in three nucleon–nucleon centre-of-mass pseudorapidity regions, (−2.83,−2.02), (−1.84,0.91), and (1.09,1.90). The cross-section and RpPb values are compared with the results of a next-to-leading-order perturbative QCD calculation, with and without nuclear parton distribution function modifications, and with expectations based on a model of the energy loss of partons prior to the hard scattering. The data disfavour a large amount of energy loss and provide new constraints on the parton densities in nuclei.

Duke Scholars

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

ISSN

0370-2693

Publication Date

September 10, 2019

Volume

796

Start / End Page

230 / 252

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
 

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Aaboud, M., Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abeloos, B., … Arguin, J. F. (2019). Measurement of prompt photon production in sNN=8.16 TeV p + Pb collisions with ATLAS. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 796, 230–252. https://doi.org/10.1016/j.physletb.2019.07.031
Aaboud, M., G. Aad, B. Abbott, D. C. Abbott, O. Abdinov, B. Abeloos, D. K. Abhayasinghe, et al. “Measurement of prompt photon production in sNN=8.16 TeV p + Pb collisions with ATLAS.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics 796 (September 10, 2019): 230–52. https://doi.org/10.1016/j.physletb.2019.07.031.
Aaboud M, Aad G, Abbott B, Abbott DC, Abdinov O, Abeloos B, et al. Measurement of prompt photon production in sNN=8.16 TeV p + Pb collisions with ATLAS. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2019 Sep 10;796:230–52.
Aaboud, M., et al. “Measurement of prompt photon production in sNN=8.16 TeV p + Pb collisions with ATLAS.” Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 796, Sept. 2019, pp. 230–52. Scopus, doi:10.1016/j.physletb.2019.07.031.
Aaboud M, Aad G, Abbott B, Abbott DC, Abdinov O, Abeloos B, Abhayasinghe DK, Abidi SH, AbouZeid OS, Abraham NL, Abramowicz H, Abreu H, Abulaiti Y, Acharya BS, Adachi S, Adam L, Adamczyk L, Adamek L, Adelman J, Adersberger M, Adiguzel A, Adye T, Affolder AA, Afik Y, Agheorghiesei C, Aguilar-Saavedra JA, Ahmadov F, Aielli G, Akatsuka S, Åkesson TPA, Akilli E, Akimov AV, Alberghi GL, Albert J, Albicocco P, Alconada Verzini MJ, Alderweireldt S, Aleksa M, Aleksandrov IN, Alexa C, Alexandre D, Alexopoulos T, Alhroob M, Ali B, Alimonti G, Alison J, Alkire SP, Allaire C, 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, Ambler A, Ambroz L, Amelung C, Amidei D, Amor Dos Santos SP, Amoroso S, Amrouche CS, An F, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders JK, Andreazza A, Andrei V, Anelli CR, Angelidakis S, Angelozzi I, Angerami A, Anisenkov AV, Annovi A, Antel C, Anthony MT, Antonelli M, Antrim DJA, Anulli F, Aoki M, Aparisi Pozo JA, Aperio Bella L, Arabidze G, Araque JP, Araujo Ferraz V, Araujo Pereira R, Arce ATH, Ardell RE, Arduh FA, Arguin JF. Measurement of prompt photon production in sNN=8.16 TeV p + Pb collisions with ATLAS. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics. 2019 Sep 10;796:230–252.
Journal cover image

Published In

Physics Letters Section B Nuclear Elementary Particle and High Energy Physics

DOI

ISSN

0370-2693

Publication Date

September 10, 2019

Volume

796

Start / End Page

230 / 252

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