Forward rapidity isolated photon production in proton-nucleus collisions
Ducloué, B., Lappi, T., & Mäntysaari, H. (2019). Forward rapidity isolated photon production in proton-nucleus collisions. Nuclear Physics A, 982, 267-270. https://doi.org/10.1016/j.nuclphysa.2018.10.064
Julkaistu sarjassa
Nuclear Physics APäivämäärä
2019Tekijänoikeudet
© 2018 Published by Elsevier B.V.
We calculate isolated photon production at forward rapidities in proton-nucleus collisions in the Color Glass Condensate framework. Our calculation uses dipole cross sections solved from the running coupling Balitsky-Kovchegov equation with an initial condition fit to deep inelastic scattering data and extended to nuclei with an optical Glauber procedure that introduces no additional parameters beyond the basic nuclear geometry. We present predictions for future forward RHIC and LHC measurements. The predictions are also compared to updated results for the nuclear modification factors for pion production, Drell-Yan dileptons and J/ψ mesons in the same forward kinematics, consistently calculated in the same theoretical framework. We find that leading order, running coupling high energy evolution in the CGC picture leads to a significant nuclear suppression at forward rapidities. This nuclear suppression is stronger for photons than for pions. We also discuss how this might change with next-to-leading order high energy evolution.
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Julkaisija
Elsevier BVISSN Hae Julkaisufoorumista
0375-9474Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/28882859
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Rahoittaja(t)
Suomen Akatemia; Euroopan komissioRahoitusohjelmat(t)
Akatemiatutkijan tutkimuskulut, SA; Akatemiatutkija, SA; ERC European Research Council, H2020
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Lisätietoja rahoituksesta
This work has been supported by the Academy of Finland, projects 267321 and 303756, and by the European Research Council, grant ERC-2015-CoG-681707. The work of B.D. is supported by the Agence Nationale de la Recherche project ANR-16-CE31-0019-01.Lisenssi
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