Constraining hadronization mechanisms with Λc+/D0 production ratios in Pb–Pb collisions at sNN=5.02 TeV

Acharya, S.; Adamová, D.; Adler, A.; Adolfsson, J.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ahuja, I.; Akbar, Z.; Akindinov, A.; Al-Turany, M.; Alam, S. N.; Aleksandrov, D.; Alessandro, B.; Alfanda, H. M.; Alfaro Molina, R.; Ali, B.; Ali, Y.; Alici, A.; Alizadehvandchali, N.; Alkin, A.; Alme, J.; Alocco, G.; Alt, T.; Altsybeev, I.; Anaam, M. N.; Andrei, C.; Andreou, D.; Andronic, A.; Anguelov, V.; Antinori, F.; Antonioli, P.; Anuj, C.; Apadula, N.; Aphecetche, L.; Appelshäuser, H.; Arcelli, S.; Arnaldi, R.; Arsene, I. C.; Arslandok, M.; Augustinus, A.; Averbeck, R.; Aziz, S.; Azmi, M. D.; Badalà, A.; Baek, Y. W.; Bai, X.; Bailhache, R.; Bailung, Y.; Bala, R.; Balbino, A.; Baldisseri, A.; Balis, B.; Banerjee, D.; Banoo, Z.; Barbera, R.; Barioglio, L.; Barlou, M.; Barnaföldi, G. G.; Barnby, L. S.; Barret, V.; Bartels, C.; Barth, K.; Bartsch, E.; Baruffaldi, F.; Bastid, N.; Basu, S.; Batigne, G.; Batyunya, B.; Bauri, D.; Bazo Alba, J. 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doi:10.1016/j.physletb.2023.137796

Title: Constraining hadronization mechanisms with Λ c + / D 0 production ratios in Pb–Pb collisions at s NN = 5.02 TeV

Journal Article · Tue Feb 28 00:00:00 EST 2023 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2023.137796· OSTI ID:1974314

Acharya, S. ^[1]; Adamová, D.; Adler, A.; Adolfsson, J.; Aglieri Rinella, G.; Agnello, M.; Agrawal, N.; Ahammed, Z.; Ahmad, S.; Ahn, S. U.; Ahuja, I.; Akbar, Z.; Akindinov, A.; Al-Turany, M.; Alam, S. N.; Aleksandrov, D.; Alessandro, B.; Alfanda, H. M.; Alfaro Molina, R.; Ali, B. more »

Homi Bhabha National Institute (India); ALICE Collaboration et al.

The production of prompt Λ +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 √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 p T = 0. The p T-differential Λ +c / D 0 ratio is enhanced with respect to the pp measurement for 4 < p T < 8 GeV / c by 3.7 standard deviations ( σ), while the p T - integrated ratios are compatible within 1 σ. The observed trend is similar to that observed in the strange sector for the Λ / K 0S ratio. Model calculations including coalescence or statistical hadronization for charm-hadron formation are compared with the data.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)

Contributing Organization:: ALICE Collaboration

Grant/Contract Number:: AC05-00OR22725; FG02-96ER40982

OSTI ID:: 1974314

Alternate ID(s):: OSTI ID: 2007896

Journal Information:: Physics Letters. B, Vol. 839; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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