Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/123479
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Type: | Journal article |
Title: | Measurement of prompt photon production in √sNN = 8.16 TeV p + Pb collisions with ATLAS |
Other Titles: | Measurement of prompt photon production in root sNN = 8.16 TeV p + Pb collisions with ATLAS |
Author: | Aaboud, M. Aad, G. Abbott, B. Abbott, D.C. Abdinov, O. Abeloos, B. Abhayasinghe, D.K. Abidi, S.H. AbouZeid, O.S. Abraham, N.L. Abramowicz, H. Abreu, H. Abulaiti, Y. Acharya, B.S. Adachi, S. Adam, L. Adamczyk, L. Adamek, L. Adelman, J. Adersberger, M. et al. |
Citation: | Physics Letters B: Nuclear Physics and Particle Physics, 2019; 796:230-252 |
Publisher: | Elsevier |
Issue Date: | 2019 |
ISSN: | 0370-2693 1873-2445 |
Statement of Responsibility: | M. Aaboud ... D. Duvnjak .. P. Jackson ... A. Petridis ... A.S. Sharma ... M.J. White ... et al. [The ATLAS Collaboration] |
Abstract: | The inclusive production rates of isolated, prompt photons in p + Pb collisions at √sNN=8.16TeV are studied with the ATLAS detector at the Large Hadron Collider using a dataset with an integrated luminosity of 165nb⁻¹ recorded 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 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. |
Rights: | ©2019 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP³. |
DOI: | 10.1016/j.physletb.2019.07.031 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1016/j.physletb.2019.07.031 |
Appears in Collections: | Aurora harvest 8 Physics publications |
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hdl_123479.pdf | Published Version | 1.67 MB | Adobe PDF | View/Open |
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