Measurement of the non-prompt D-meson fraction as a function of multiplicity in proton-proton collisions at √s=13 TeV



Acharya, S, Adamova, D, Adler, A, Rinella, G Aglieri, Agnello, M, Agrawal, N, Ahammed, Z, Ahmad, S, Ahn, SU, Ahuja, I
et al (show 1024 more authors) (2023) Measurement of the non-prompt D-meson fraction as a function of multiplicity in proton-proton collisions at √s=13 TeV JOURNAL OF HIGH ENERGY PHYSICS, 2023 (10). 92-. ISSN 1029-8479, 1029-8479

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Abstract

The fractions of non-prompt (i.e. originating from beauty-hadron decays) D<sup>0</sup> and D<sup>+</sup> mesons with respect to the inclusive yield are measured as a function of the charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy of s = 13 TeV with the ALICE detector at the LHC. The results are reported in intervals of transverse momentum (p <inf>T</inf>) and integrated in the range 1 < p <inf>T</inf> < 24 GeV/c. The fraction of non-prompt D<sup>0</sup> and D<sup>+</sup> mesons is found to increase slightly as a function of p <inf>T</inf> in all the measured multiplicity intervals, while no significant dependence on the charged-particle multiplicity is observed. In order to investigate the production and hadronisation mechanisms of charm and beauty quarks, the results are compared to PYTHIA 8 as well as EPOS 3 and EPOS 4 Monte Carlo simulations, and to calculations based on the colour glass condensate including three-pomeron fusion. [Figure not available: see fulltext.].

Item Type: Article
Uncontrolled Keywords: Hadron-Hadron Scattering, Heavy Quark Production
Depositing User: Symplectic Admin
Date Deposited: 13 Aug 2024 13:06
Last Modified: 23 May 2026 08:10
DOI: 10.1007/JHEP10(2023)092
Open Access URL: https://doi.org/10.1007/JHEP10(2023)092
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3183662
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