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Charged-particle production as a function of multiplicity and transverse spherocity in pp collisions at √s=5.02 and 13 TeV

Acharya S.
•
Adamova D.
•
Adhya S. P.
altro
Zurlo N.
2019
  • journal article

Periodico
THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
Abstract
We present a study of the inclusive charged- particle transverse momentum ( pT ) spectra as a function of charged-particle multiplicity density at mid-pseudorapidity, d Nch /dη, in pp collisions at √s = 5.02 and 13 TeV covering the kinematic range |η| < 0.8 and 0.15 < pT < 20 GeV/c. The results are presented for events with at least one charged particle in |η| < 1 (INEL > 0). The pT spectra are reported for two multiplicity estimators covering different pseudo- rapidity regions. The pT spectra normalized to that for INEL> 0 show little energy dependence. Moreover, the high-pT yields of charged particles increase faster than the charged-particle multiplicity density. The average pT as a function of multiplicity and transverse spherocity is reported for pp collisions at √s = 13 TeV. For low- (high-) spherocity events, corresponding to jet-like (isotropic) events, the aver- age pT is higher (smaller) than that measured in INEL > 0 pp collisions. Within uncertainties, the functional form of ⟨ pT ⟩( Nch ) is not affected by the spherocity selection. While EPOS LHC gives a good description of many features of data, PYTHIA overestimates the average pT in jet-like events.
DOI
10.1140/epjc/s10052-019-7350-y
WOS
WOS:000491001100003
Archivio
http://hdl.handle.net/11368/2954131
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85073528658
https://link.springer.com/article/10.1140/epjc/s10052-019-7350-y
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2954131/1/EPJ_C_79(2019)857_1-22.pdf
Soggetti
  • ALICE

  • LHC

  • pp collisions

Scopus© citazioni
32
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
48
Data di acquisizione
Mar 7, 2024
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