A1 Journal article (refereed)
Inclusive and multiplicity dependent production of electrons from heavy-flavour hadron decays in pp and p-Pb collisions (2023)

ALICE Collaboration. (2023). Inclusive and multiplicity dependent production of electrons from heavy-flavour hadron decays in pp and p-Pb collisions. Journal of High Energy Physics, 2023(8), Article 6. https://doi.org/10.1007/JHEP08(2023)006

JYU authors or editors

Publication details

All authors or editors: ALICE Collaboration

Journal or series: Journal of High Energy Physics

ISSN: 1126-6708

eISSN: 1029-8479

Publication year: 2023

Publication date: 02/08/2023

Volume: 2023

Issue number: 8

Article number: 6

Publisher: Springer

Publication country: Germany

Publication language: English

DOI: https://doi.org/10.1007/JHEP08(2023)006

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/88799

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2303.13349

Abstract

Measurements of the production of electrons from heavy-flavour hadron decays in pp collisions at √s = 13 TeV at midrapidity with the ALICE detector are presented down to a transverse momentum (pT) of 0.2 GeV/c and up to pT = 35 GeV/c, which is the largest momentum range probed for inclusive electron measurements in ALICE. In p-Pb collisions, the production cross section and the nuclear modification factor of electrons from heavy-flavour hadron decays are measured in the pT range 0.5 < pT < 26 GeV/c at √sNN = 8.16 TeV. The nuclear modification factor is found to be consistent with unity within the statistical and systematic uncertainties. In both collision systems, first measurements of the yields of electrons from heavy-flavour hadron decays in different multiplicity intervals normalised to the multiplicity-integrated yield (self-normalised yield) at midrapidity are reported as a function of the self-normalised charged-particle multiplicity estimated at midrapidity. The self-normalised yields in pp and p-Pb collisions grow faster than linear with the self-normalised multiplicity. A strong pT dependence is observed in pp collisions, where the yield of high-pT electrons increases faster as a function of multiplicity than the one of low-pT electrons. The measurement in p-Pb collisions shows no pT dependence within uncertainties. The self-normalised yields in pp and p-Pb collisions are compared with measurements of other heavy-flavour, light-flavour, and strange particles, and with Monte Carlo simulations.

Keywords: particle physics

Free keywords: hadron-hadron scattering

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Ministry reporting: Yes

VIRTA submission year: 2023

Preliminary JUFO rating: 3