Multiplicity dependence of π, K, and p production in pp collisions at √s = 13 TeV (CROSBI ID 286752)
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Podaci o odgovornosti
Acharya, S. ; ... ; Antičić, Tome ; ... ; Erhardt, Filip ; ... ; Gotovac, Sven ; ... ; Jerčić, Marko ; ... ; Lončar, Petra ; ... ; Mudnić, Eugen ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Simatović, Goran ; ... ; Vicković, Linda ; ... ; Zurlo, N.
ALICE Collaboration
engleski
Multiplicity dependence of π, K, and p production in pp collisions at √s = 13 TeV
This paper presents the measurements of π±, K±, p and p transverse momentum (pT) spectra as a function of charged-particle multiplicity density in proton– proton (pp) collisions at √s = 13 TeV with the ALICE detector at the LHC. Such study allows us to isolate the center- ofmass energy dependence of light-flavour particle production. The measurements reported here cover a pT range from 0.1 to 20 GeV/c and are done in the rapidity interval |y| < 0.5. The pT-differential particle ratios exhibit an evolution with multiplicity, similar to that observed in pp collisions at √s = 7 TeV, which is qualitatively described by some of the hydrodynamical and pQCD- inspired models discussed in this paper. Furthermore, the pT- integrated hadron-to-pion yield ratios measured in pp collisions at two different center-of- mass energies are consistent when compared at similar multiplicities. This also extends to strange and multi-strange hadrons, suggesting that, at LHC energies, particle hadrochemistry scales with particle multiplicity the same way under different collision energies and colliding systems.
π, K, and p production ; pp collisions
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Podaci o izdanju
80 (8)
2020.
693
20
objavljeno
1434-6044
1434-6052
10.1140/epjc/s10052-020-8125-1
Povezanost rada
Fizika