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Multiplicity dependence of (multi-)strange hadron production in proton-proton collisions at √s=13 TeV

The production rates and the transverse momentum distribution of strange hadrons at mid-rapidity (vertical bar y vertical bar < 0.5) are measured in proton-proton collisions at root s = 13 TeV as a function of the charged particle multiplicity, using the ALICE detector at the LHC. The production...

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Hauptverfasser: Acharya, Shreyasi (Verfasst von) , Angelov, Venelin (Verfasst von) , Arslandok, Mesut (Verfasst von) , Danisch, Meike (Verfasst von) , Feuillard, Victor (Verfasst von) , Glässel, Peter (Verfasst von) , Kim, Jiyoung (Verfasst von) , Kim, Minjung (Verfasst von) , Klewin, Sebastian (Verfasst von) , Knichel, Michael Linus (Verfasst von) , Köhler, Markus Konrad (Verfasst von) , Leardini, Lucia (Verfasst von) , Ohlson, Alice (Verfasst von) , Pachmayer, Yvonne C. (Verfasst von) , Reygers, Klaus (Verfasst von) , Schicker, Rainer (Verfasst von) , Schmah, Alexander (Verfasst von) , Schmidt, Marten Ole (Verfasst von) , Stachel, Johanna (Verfasst von) , Weiser, Dennis (Verfasst von) , Windelband, Bernd (Verfasst von) , Yüncü, Alperen (Verfasst von)
Körperschaft: ALICE (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: [2020]
In: The European physical journal. C, Particles and fields
Year: 2020, Jahrgang: 80, Heft: 2
ISSN:1434-6052
DOI:10.1140/epjc/s10052-020-7673-8
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-020-7673-8
Volltext
Verfasserangaben:ALICE Cooperation
Beschreibung
Zusammenfassung:The production rates and the transverse momentum distribution of strange hadrons at mid-rapidity (vertical bar y vertical bar < 0.5) are measured in proton-proton collisions at root s = 13 TeV as a function of the charged particle multiplicity, using the ALICE detector at the LHC. The production rates of K-S(0), Lambda, Xi, and Omega increase with the multiplicity faster than what is reported for inclusive charged particles. The increase is found to be more pronounced for hadrons with a larger strangeness content. Possible auto-correlations between the charged particles and the strange hadrons are evaluated by measuring the event-activity with charged particle multiplicity estimators covering different pseudorapidity regions. When comparing to lower energy results, the yields of strange hadrons are found to depend only on the mid-rapidity charged particle multiplicity. Several features of the data are reproduced qualitatively by general purpose QCD Monte Carlo models that take into account the effect of densely-packed QCD strings in high multiplicity collisions. However, none of the tested models reproduce the data quantitatively. This work corroborates and extends the ALICE findings on strangeness production in proton-proton collisions at 7 TeV.
Beschreibung:ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim. M. Kim, S. Klewin, M.L. Knichel, M.K. Köhler, L. Leardini, N.A. Martin, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, J. Stachel, D.F. Weiser, B. Windelband, A. Yuncu und 1022 weitere
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Gesehen am 16.04.2020
Beschreibung:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-020-7673-8

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