Constraining hadronization mechanisms with Λ.sub.c./sub..sup.+./sup./D.sup.0./sup. production ratios in Pb-Pb collisions at √s.sub.NN./sub.=5.02 TeV

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Acharya, S. - Adamová, Dagmar - Adler, A. - Adolfsson, J. - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Fialová, V. - Grund, D. - Herman, T. - Horák, D. - Isakov, Artem - Kotliarov, Artem - Krupová, D. M. - Křížek, Filip - Křížková Gajdošová, K. - Kushpil, Svetlana - Lavička, R. - Petráček, V. - Šafařík, K. - Torres, S. R. - Závada, Petr … celkem 1017 autorů
Constraining hadronization mechanisms with Λ_c⁺/D⁰ production ratios in Pb-Pb collisions at √s_NN=5.02 TeV.
Physics Letters. B. Roč. 839, APR (2023), č. článku 137796. ISSN 0370-2693. E-ISSN 1873-2445
Výzkumná infrastruktura: CERN-CZ III - 90240; CERN-CZ II - 90104
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: ALICE collaboration * heavy ion collisions
Obor OECD: Nuclear physics; Particles and field physics (FZU-D)
Impakt faktor: 4.3, rok: 2022
Způsob publikování: Open access
https://doi.org/10.1016/j.physletb.2023.137796

The production of prompt A+c baryons at midrapidity (|y| < 0.5) was measured in central (0-10%) and mid-central (30-50%) Pb-Pb collisions at the center-of-mass energy per nucleon-nucleon pair root sNN = 5.02 TeV with the ALICE detector. The results are more precise, more differential in centrality, and reach much lower transverse momentum (pT =1 GeV/c) with respect to previous measurements performed by the ALICE, STAR, and CMS Collaborations in nucleus-nucleus collisions, allowing for an extrapolation down to pT = 0. The pT-differential A+c /D0 ratio is enhanced with respect to the pp measurement for 4 < pT < 8 GeV/c by 3.7 standard deviations (cr), while the pT-integrated ratios are compatible within 1cr. The observed trend is similar to that observed in the strange sector for the A/K0S ratio. Model calculations including coalescence or statistical hadronization for charm-hadron formation are compared with the data.(c) 2023 European Organization for Nuclear Research.
Trvalý link: https://hdl.handle.net/11104/0343454