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

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The production of prompt Λc+ 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 re...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Berdnikova, Anastasia (Author) , Bergmann, Luisa (Author) , Danisch, Meike (Author) , Feuillard, Victor (Author) , Glässel, Peter (Author) , Kim, Jiyoung (Author) , Kim, Minjung (Author) , Kroesen, Martin (Author) , Nath, Abhishek (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Schmah, Alexander (Author) , Schmidt, Marten Ole (Author) , Skorodumovs, Georgijs (Author) , Stachel, Johanna (Author) , Stiefelmaier, Stephan (Author) , Völkl, Martin (Author) , Windelband, Bernd (Author) , Yüncü, Alperen (Author) , Zanone, Federica (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 9 March 2023
In: Physics letters
Year: 2023, Volume: 839, Pages: 1-14
ISSN:1873-2445
DOI:10.1016/j.physletb.2023.137796
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2023.137796
Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269323001302
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Author Notes:ALICE Collaboration*
Description
Summary:The production of prompt Λc+ 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 pT=0. The pT-differential Λc+/D0 ratio is enhanced with respect to the pp measurement for 4<pT<8 GeV/c by 3.7 standard deviations (σ), while the pT-integrated ratios are compatible within 1σ. The observed trend is similar to that observed in the strange sector for the Λ/KS0 ratio. Model calculations including coalescence or statistical hadronization for charm-hadron formation are compared with the data.
Item Description:Online verfügbar 28. Februar 2023, Artikelversion 9. März 2023
*ALICE Collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M. Kroesen, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, M.A. Völkl, B. Windelband, A. Yuncu, F. Zanone [und 1001 weitere Personen]
Im Titel sind der Buchstabe c tiefgestellt und das Pluszeichen sowie die Zahl 0 hochgestellt
Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol
Gesehen am 18.07.2023
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2023.137796

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