Franconi, Laura; Miucci, Antonio; Merlassino, Claudia; Haug, Sigve; Weber, Michael; Anders, John Kenneth; Beck, Hans Peter; Ereditato, Antonio; Weston, Thomas Daniel (2019). Measurement of prompt photon production in \sqrts\mathrmNN = 8.16 TeV p+Pb collisions with ATLAS. Physics letters. B, 796, pp. 230-252. Elsevier 10.1016/j.physletb.2019.07.031
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The inclusive production rates of isolated, prompt photons in p +Pbcollisions at √sNN=8.16TeV are studied with the ATLAS detector at the Large Hadron Collider using a dataset with an integrated luminosity of 165nb−1recorded in 2016. The cross-section and nuclear modification factor RpPbare measured as a function of photon transverse energy from 20GeV to 550GeV 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 RpPbvalues 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.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP) |
UniBE Contributor: |
Franconi, Laura, Miucci, Antonio, Merlassino, Claudia, Haug, Sigve, Weber, Michele, Anders, John Kenneth, Beck, Hans Peter, Ereditato, Antonio, Weston, Thomas Daniel |
Subjects: |
500 Science > 530 Physics |
ISSN: |
0370-2693 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
BORIS Import LHEP |
Date Deposited: |
17 Jun 2020 11:46 |
Last Modified: |
05 Dec 2022 15:38 |
Publisher DOI: |
10.1016/j.physletb.2019.07.031 |
Additional Information: |
Kollaboration - Es sind nur die Berner AutorInnen namentlich erwaehnt; The ATLAS collaboration |
BORIS DOI: |
10.7892/boris.143592 |
URI: |
https://boris.unibe.ch/id/eprint/143592 |
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