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Measurement of prompt D0, Λ+c, and Σ0,++c (2455) production in proton-proton collisions at √s=13 TeV

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The pT-differential production cross sections of prompt D0, Λ+c, and Σ0,c(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at √s=13 TeV. This is the first measurement of Σ0,++c production in hadronic collisions. Assuming the same production yield for the three Σ0,+,++c...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Arslandok, Mesut (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) , Martin, Nicole Alice (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)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 5 January 2022
In: Physical review letters
Year: 2022, Volume: 128, Issue: 1, Pages: 1-13
ISSN:1079-7114
DOI:10.1103/PhysRevLett.128.012001
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.128.012001
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.128.012001
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Author Notes:S. Acharya et al. (ALICE Collaboration)
Description
Summary:The pT-differential production cross sections of prompt D0, Λ+c, and Σ0,c(2455) charmed hadrons are measured at midrapidity (|y|<0.5) in pp collisions at √s=13 TeV. This is the first measurement of Σ0,++c production in hadronic collisions. Assuming the same production yield for the three Σ0,+,++c isospin states, the baryon-to-meson cross section ratios Σ0,+,++c/D0 and Λ+c/D0 are calculated in the transverse momentum (pT) intervals 2<pT<12 and 1<pT<24 GeV/c. Values significantly larger than in e+e− collisions are observed, indicating for the first time that baryon enhancement in hadronic collisions also extends to the Σc. The feed-down contribution to Λ+c production from Σ0,+,++c is also reported and is found to be larger than in e+e− collisions. The data are compared with predictions from event generators and other phenomenological models, providing a sensitive test of the different charm-hadronization mechanisms implemented in the models.
Item Description:Im Titel steht der Buchstabe s unter dem Wurzelsymbol, "0" und "+" sind jeweils hochgestellt, "c" ist jeweils tiefgestellt
ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, A. Berdnikova, L. Bergmann, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, M. Kroesen, N. Martin, A. Nath, Y.C. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, G. Skorodumovs, J. Stachel, S. Stiefelmaier, M. Völkl, B. Windelband, A. Yüncü [und viele weitere]
Gesehen am 17.10.2022
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.128.012001

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