Measurements of the production yields of charm baryons (Λc+) and charm mesons (D0) in proton-lead collisions at a nucleon-nucleon center-of-mass energy of 8.16 TeV are presented. The data were collected in 2016 with the CMS experiment and correspond to an integrated luminosity of 186 nb−1. The Λc+ baryon is reconstructed from the decay channel Λc+→KS0p, while the D0 meson is reconstructed via D0→K−π+. The Λc+ baryon and D0 meson yields are extracted in several charged-particle multiplicity classes. No strong multiplicity dependence of the Λc+-to-D0 yield ratio is observed, unlike the observed strange baryon to strange meson yield ratio of Λ/Λ‾ to KS0, which shows a strong multiplicity dependence. This observation indicates different mechanisms for the multiplicity evolution of hadronization processes for charm and strange quarks and provides new constraints to the understanding of heavy flavor production and collectivity in small collision systems.

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., et al. (2025). Multiplicity dependence of charm baryon and charm meson production in pPb collisions at sjavax.xml.bind.JAXBElement@3bc4a013=8.16TeV. PHYSICS LETTERS. SECTION B, 868(September 2025) [10.1016/j.physletb.2025.139672].

Multiplicity dependence of charm baryon and charm meson production in pPb collisions at sjavax.xml.bind.JAXBElement@3bc4a013=8.16TeV

Xiao J.;Boldrini G.;Brivio F.;Cetorelli F.;De Guio F.;Dinardo M. E.;Gerosa R.;Ghezzi A.;Govoni P.;Guzzi L.;Lucchini M. T.;Malberti M.;Moroni L.;Paganoni M.;Pinolini B. S.;Ragazzi S.;Tabarelli de Fatis T.;Zuolo D.;
2025

Abstract

Measurements of the production yields of charm baryons (Λc+) and charm mesons (D0) in proton-lead collisions at a nucleon-nucleon center-of-mass energy of 8.16 TeV are presented. The data were collected in 2016 with the CMS experiment and correspond to an integrated luminosity of 186 nb−1. The Λc+ baryon is reconstructed from the decay channel Λc+→KS0p, while the D0 meson is reconstructed via D0→K−π+. The Λc+ baryon and D0 meson yields are extracted in several charged-particle multiplicity classes. No strong multiplicity dependence of the Λc+-to-D0 yield ratio is observed, unlike the observed strange baryon to strange meson yield ratio of Λ/Λ‾ to KS0, which shows a strong multiplicity dependence. This observation indicates different mechanisms for the multiplicity evolution of hadronization processes for charm and strange quarks and provides new constraints to the understanding of heavy flavor production and collectivity in small collision systems.
Articolo in rivista - Articolo scientifico
CMS; Hadronization;
English
25-giu-2025
2025
868
September 2025
139672
none
Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., et al. (2025). Multiplicity dependence of charm baryon and charm meson production in pPb collisions at sjavax.xml.bind.JAXBElement@3bc4a013=8.16TeV. PHYSICS LETTERS. SECTION B, 868(September 2025) [10.1016/j.physletb.2025.139672].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/575283
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