Inclusive photon production at forward rapidities in pp and p-Pb collisions at √s.sub.NN./sub.=5.02 TeV

0578400 - ÚJF 2024 RIV US eng J - Journal Article
Acharya, S. - Adamová, Dagmar - Adler, A. - Aglieri Rinella, G. - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Filová, V. - Grecká, Ekaterina - Grund, D. - Herman, T. - Isakov, Artem - Kotliarov, Artem - Krupová, D. M. - Křížek, Filip - Kushpil, Svetlana - Petráček, V. - Šafařík, K. - Torres, S. R. - Závada, Petr … Total 1032 authors
Inclusive photon production at forward rapidities in pp and p-Pb collisions at √s_NN=5.02 TeV.
European Physical Journal C. Roč. 83, č. 7 (2023), č. článku 661. ISSN 1434-6044. E-ISSN 1434-6052
Research Infrastructure: CERN-CZ III - 90240
Institutional support: RVO:68378271 ; RVO:61389005
Keywords : ALICE collaboration * heavy ion experiments * collisions
OECD category: Nuclear physics; Particles and field physics (FZU-D)
Impact factor: 4.4, year: 2022
Method of publishing: Open access
https://doi.org/10.1140/epjc/s10052-023-11729-y

A study of multiplicity and pseudorapidity distributions of inclusive photons measured in pp and p–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of sNN = 5.02 TeV using the ALICE detector in the forward pseudorapidity region 2.3 < nlab < 3.9 is presented. Measurements in p–Pb collisions are reported for two beam configurations in which the directions of the proton and lead ion beam were reversed. The pseudorapidity distributions in p–Pb collisions are obtained for seven centrality classes which are defined based on different event activity estimators, i.e., the charged-particle multiplicity measured at midrapidity as well as the energy deposited in a calorimeter at beam rapidity. The inclusive photon multiplicity distributions for both pp and p–Pb collisions are described by double negative binomial distributions. The pseudorapidity distributions of inclusive photons are compared to those of charged particles at midrapidity in pp collisions and for different centrality classes in p–Pb collisions. The results are compared to predictions from various Monte Carlo event generators. None of the generators considered in this paper reproduces the inclusive photon multiplicity distributions in the reported multiplicity range. The pseudorapidity distributions are, however, better described by the same generators.
Permanent Link: https://hdl.handle.net/11104/0347396