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Production of light-flavor hadrons in pp collisions at √s=7 and √s=13 TeV

Acharya S.
•
Adamova D.
•
Adler A.
altro
Zurlo N.
2021
  • journal article

Periodico
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
Abstract
The production of π±, K ±, KS0, K ∗(892) , p , φ(1020) , Λ , Ξ -, Ω -, and their antiparticles was measured in inelastic proton–proton (pp) collisions at a center-of-mass energy of s = 13 TeV at midrapidity (| y| < 0.5) as a function of transverse momentum (pT) using the ALICE detector at the CERN LHC. Furthermore, the single-particle pT distributions of KS0, Λ , and Λ ̄ in inelastic pp collisions at s=7 TeV are reported here for the first time. The pT distributions are studied at midrapidity within the transverse momentum range 0 ≤ pT≤ 20 GeV/c, depending on the particle species. The pT spectra, integrated yields, and particle yield ratios are discussed as a function of collision energy and compared with measurements at lower s and with results from various general-purpose QCD-inspired Monte Carlo models. A hardening of the spectra at high pT with increasing collision energy is observed, which is similar for all particle species under study. The transverse mass and xT≡2pT/s scaling properties of hadron production are also studied. As the collision energy increases from s = 7–13 TeV, the yields of non- and single-strange hadrons normalized to the pion yields remain approximately constant as a function of s, while ratios for multi-strange hadrons indicate enhancements. The pT-differential cross sections of π±, K ± and p (p ̄) are compared with next-to-leading order perturbative QCD calculations, which are found to overestimate the cross sections for π± and p (p ̄) at high pT.
DOI
10.1140/epjc/s10052-020-08690-5
WOS
WOS:000632422000001
Archivio
http://hdl.handle.net/11368/2991460
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85103353960
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2991460/1/EPJ_C_81(2021)256_1-41.pdf
Soggetti
  • proton-proton collisi...

  • light flavour

Scopus© citazioni
8
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
28
Data di acquisizione
Mar 11, 2024
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