A1 Journal article (refereed)
Measurement of the fraction of jet longitudinal momentum carried by Λc+ baryons in pp collisions (2024)


ALICE Collaboration. (2024). Measurement of the fraction of jet longitudinal momentum carried by Λc+ baryons in pp collisions. Physical Review D, 109(7), Article 072005. https://doi.org/10.1103/PhysRevD.109.072005


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Publication details

All authors or editorsALICE Collaboration

Journal or seriesPhysical Review D

ISSN2470-0010

eISSN2470-0029

Publication year2024

Publication date05/04/2024

Volume109

Issue number7

Article number072005

PublisherAmerican Physical Society (APS)

Publication countryUnited States

Publication languageEnglish

DOIhttps://doi.org/10.1103/PhysRevD.109.072005

Publication open accessOpenly available

Publication channel open accessPartially open access channel

Publication is parallel published (JYX)https://jyx.jyu.fi/handle/123456789/94618

Publication is parallel publishedhttps://arxiv.org/abs/2301.13798


Abstract

Recent measurements of charm-baryon production in hadronic collisions have questioned the universality of charm-quark fragmentation across different collision systems. In this work the fragmentation of charm quarks into charm baryons is probed, by presenting the first measurement of the longitudinal jet momentum fraction carried by Λc+ baryons, zch||, in hadronic collisions. The results are obtained in proton-proton (pp) collisions at √s=13 TeV at the LHC, with Λc+ baryons and charged (track-based) jets reconstructed in the transverse momentum intervals of 3≤pΛ+cT<15 GeV/c and 7≤pjetchT<15 GeV/c, respectively. The zch|| distribution is compared to a measurement of D0-tagged charged jets in pp collisions as well as to PYTHIA 8 simulations. The data hints that the fragmentation of charm quarks into charm baryons is softer with respect to charm mesons, in the measured kinematic interval, as predicted by hadronisation models which include colour correlations beyond leading-colour in the string formation.


Keywordsparticle physics


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Ministry reportingYes

VIRTA submission year2024

Preliminary JUFO rating2


Last updated on 2024-03-07 at 20:07