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Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at √sNN=5.02 TeV

Acharya, Shreyasi ; Adamová, Dagmar ; Adhya, Souvik Priyam ; Adler, Alexander ; Adolfsson, Jonatan ; Aggarwal, Madan M ; Aglieri Rinella, Gianluca ; Agnello, Michelangelo ; Agrawal, Nikita ; Ahammed, Zubayer ; Alme, Johan ; Altenkaemper, Lucas ; Djuvsland, Øystein ; Eikeland, Viljar Nilsen ; Ersdal, Magnus Rentsch ; Fionda, Fiorella Maria Celeste ; Grøttvik, Ola Slettevoll ; Lofnes, Ingrid Mckibben ; Nystrand, Joakim ; Rehman, Attiq Ur ; Røhrich, Dieter ; Tambave, Ganesh Jagannath ; Ullaland, Kjetil ; Wagner, Boris ; Yang, Shiming ; Yuan, Shiming ; Zhou, Zhuo ; Arsene, Ionut Cristian ; Bätzing, Paul Christoph ; Dordic, Olja ; Lardeux, Antoine Xavier ; Lindal, Svein ; Mahmood, Sohail Musa ; Malik, Qasim Waheed ; Neagu, Alexandra ; Richter, Matthias ; Røed, Ketil ; Skaali, Toralf Bernhard ; Tveter, Trine Spedstad ; Zhao, Chengxin ; Helstrup, Håvard ; Hetland, Kristin Fanebust ; Kileng, Bjarte ; Nesbø, Simon Voigt ; Storetvedt, Maksim Melnik ; Langøy, Rune ; Lien, Jørgen André ; Ahmad, Shafiq F ; Ahn, Sang Un ; Akindinov, Alexander ; ALICE, Collaboration

Physical review. C, 2020-04, Vol.101 (4) [Periódico revisado por pares]

United States: American Physical Society

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Título:
Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at √sNN=5.02 TeV
Autor: Acharya, Shreyasi ; Adamová, Dagmar ; Adhya, Souvik Priyam ; Adler, Alexander ; Adolfsson, Jonatan ; Aggarwal, Madan M ; Aglieri Rinella, Gianluca ; Agnello, Michelangelo ; Agrawal, Nikita ; Ahammed, Zubayer ; Alme, Johan ; Altenkaemper, Lucas ; Djuvsland, Øystein ; Eikeland, Viljar Nilsen ; Ersdal, Magnus Rentsch ; Fionda, Fiorella Maria Celeste ; Grøttvik, Ola Slettevoll ; Lofnes, Ingrid Mckibben ; Nystrand, Joakim ; Rehman, Attiq Ur ; Røhrich, Dieter ; Tambave, Ganesh Jagannath ; Ullaland, Kjetil ; Wagner, Boris ; Yang, Shiming ; Yuan, Shiming ; Zhou, Zhuo ; Arsene, Ionut Cristian ; Bätzing, Paul Christoph ; Dordic, Olja ; Lardeux, Antoine Xavier ; Lindal, Svein ; Mahmood, Sohail Musa ; Malik, Qasim Waheed ; Neagu, Alexandra ; Richter, Matthias ; Røed, Ketil ; Skaali, Toralf Bernhard ; Tveter, Trine Spedstad ; Zhao, Chengxin ; Helstrup, Håvard ; Hetland, Kristin Fanebust ; Kileng, Bjarte ; Nesbø, Simon Voigt ; Storetvedt, Maksim Melnik ; Langøy, Rune ; Lien, Jørgen André ; Ahmad, Shafiq F ; Ahn, Sang Un ; Akindinov, Alexander ; ALICE, Collaboration
Assuntos: Collective flow ; Fysik ; Natural Sciences ; Naturvetenskap ; NUCLEAR PHYSICS AND RADIATION PHYSICS ; Nuclear reactions ; Nucleon induced nuclear reactions ; Particle & resonance production ; Physical Sciences ; Relativistic heavy-ion collisions ; Subatomic Physics ; Subatomär fysik
É parte de: Physical review. C, 2020-04, Vol.101 (4)
Notas: NFR/310713
AC02-05CH11231; AC05-00OR22725
USDOE Office of Science (SC), Nuclear Physics (NP)
Descrição: Midrapidity production of π±, K±, and (¯p)p measured by the ALICE experiment at the CERN Large Hadron Collider, in Pb-Pb and inelastic pp collisions at √sNN=5.02 TeV, is presented. The invariant yields are measured over a wide transverse momentum (pT) range from hundreds of MeV/c up to 20 GeV/c. The results in Pb-Pb collisions are presented as a function of the collision centrality, in the range 0–90%. The comparison of the pT-integrated particle ratios, i.e., proton-to-pion (p/π) and kaon-to-pion (K/π) ratios, with similar measurements in Pb-Pb collisions at √sNN=2.76 TeV show no significant energy dependence. Blast-wave fits of the pT spectra indicate that in the most central collisions radial flow is slightly larger at 5.02 TeV with respect to 2.76 TeV. Particle ratios (p/π, K/π) as a function of pT show pronounced maxima at pT≈3GeV/c in central Pb-Pb collisions. At high pT, particle ratios at 5.02 TeV are similar to those measured in pp collisions at the same energy and in Pb-Pb collisions at √sNN=2.76 TeV. Using the pp reference spectra measured at the same collision energy of 5.02 TeV, the nuclear modification factors for the different particle species are derived. Within uncertainties, the nuclear modification factor is particle species independent for high pT and compatible with measurements at √sNN=2.76 TeV. The results are compared to state-of-the-art model calculations, which are found to describe the observed trends satisfactorily.
Editor: United States: American Physical Society
Idioma: Norueguês;Inglês

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Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at √sNN=5.02 TeV

United States: American Physical Society

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