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First measurement of Ω0c production in pp collisions at √s=13TeV

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The inclusive production of the charm-strange baryon Ωc0 is measured for the first time via its hadronic decay into Ω−π+ at midrapidity (|y|<0.5) in proton-proton (pp) collisions at the centre-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cr...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Berdnikova, Anastasia (Author) , Bergmann, Luisa (Author) , Danisch, Meike (Author) , Feuillard, Victor (Author) , Fokin, Ilya D. (Author) , Glässel, Peter (Author) , Kim, Jiyoung (Author) , Kim, Minjung (Author) , Kroesen, Martin (Author) , López, Jorge (Author) , Nath, Abhishek (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Schmah, Alexander (Author) , Skorodumovs, Georgijs (Author) , Stachel, Johanna (Author) , Stiefelmaier, Stephan (Author) , Veen, Casper Arie van (Author) , Völkl, Martin (Author) , Windelband, Bernd (Author) , Yüncü, Alperen (Author) , Zanone, Federica (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 10 November 2023
In: Physics letters
Year: 2023, Volume: 846, Pages: 1-13
ISSN:1873-2445
DOI:10.1016/j.physletb.2022.137625
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2022.137625
Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269322007596
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Author Notes:ALICE Collaboration*
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Summary:The inclusive production of the charm-strange baryon Ωc0 is measured for the first time via its hadronic decay into Ω−π+ at midrapidity (|y|<0.5) in proton-proton (pp) collisions at the centre-of-mass energy s=13 TeV with the ALICE detector at the LHC. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 2<pT<12GeV/c. The pT dependence of the Ωc0-baryon production relative to the prompt D0-meson and to the prompt Ξc0-baryon production is compared to various models that take different hadronisation mechanisms into consideration. In the measured pT interval, the ratio of the pT-integrated cross sections of Ωc0 and prompt Λc+ baryons multiplied by the Ω−π+ branching ratio is found to be larger by a factor of about 20 with a significance of about 4σ when compared to e+e− collisions.
Item Description:Online verfügbar: 15. September 2023, Artikelversion: 27. September 2023
*ALICE Collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, M.C. Danisch, V.J.G. Feuillard, I. Fokin, P. Glässel, J. Kim, M. Kim, M. Kroesen, J.A. Lopez, A. Nath, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, C.A. Van Veen, B. Windelband, A. Yuncu, F. Zanone [und 1019 weitere Personen]
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Im Titel ist die Zahl 0 hochgestellt und der Buchstabe c tiefgestellt
Im Titel steht der Buchstabe s unter dem Wurzelsymbol
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2022.137625

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