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Investigating strangeness enhancement in jet and medium via πœ™β‘(1020) production in 𝑝-Pb collisions at βˆšπ‘ π‘β’π‘=5.02TeV

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This work aims to differentiate strangeness produced from hard processes (jetlike) and softer processes (underlying event) by measuring the angular correlation between a high-momentum trigger hadron (β„Ž) acting as a jet proxy and a produced strange hadron [πœ™β‘(1020) meson]. Measuring β„Žβˆ’πœ™ correlations...

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Main Authors: Acharya, Shreyasi (Author) , Angelov, Venelin (Author) , Berdnikova, Anastasia (Author) , Bergmann, Luisa (Author) , Feuillard, Victor (Author) , Fokin, Ilya D. (Author) , Glässel, Peter (Author) , Menzel, Marius (Author) , Pachmayer, Yvonne C. (Author) , Reygers, Klaus (Author) , Schicker, Rainer (Author) , Schlepper, Felix (Author) , Seo, Jinjoo (Author) , Skorodumovs, Georgijs (Author) , Stachel, Johanna (Author) , Stiefelmaier, Stephan (Author) , Veen, Casper Arie van (Author) , Windelband, Bernd (Author) , Zanone, Federica (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 27 December 2024
In: Physical review
Year: 2024, Volume: 110, Issue: 6, Pages: 1-18
ISSN:2469-9993
DOI:10.1103/PhysRevC.110.064912
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevC.110.064912
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.110.064912
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Author Notes:ALICE Collaboration
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Summary:This work aims to differentiate strangeness produced from hard processes (jetlike) and softer processes (underlying event) by measuring the angular correlation between a high-momentum trigger hadron (β„Ž) acting as a jet proxy and a produced strange hadron [πœ™β‘(1020) meson]. Measuring β„Žβˆ’πœ™ correlations at midrapidity in 𝑝-Pb collisions at βˆšπ‘ π‘β’π‘=5.02TeV as a function of event multiplicity provides insight into the microscopic origin of strangeness enhancement in small collision systems. The jetlike and the underlying-event-like strangeness production are investigated as a function of event multiplicity. They are also compared between a lower and higher momentum region. The evolutions of the per-trigger yields within the near-side (aligned with the trigger hadron) and away-side (in the opposite direction of the trigger hadron) jets are studied separately, allowing for the characterization of two distinct jetlike production regimes. Furthermore, the β„Žβˆ’πœ™ correlations within the underlying event give access to a production regime dominated by soft production processes, which can be compared directly to the in-jet production. Comparisons between β„Žβˆ’πœ™ and dihadron correlations show that the observed strangeness enhancement is largely driven by the underlying event, where the πœ™/β„Ž ratio is significantly larger than within the jet regions. As multiplicity increases, the fraction of the total πœ™β‘(1020) yield coming from jets decreases compared to the underlying event production, leading to high-multiplicity events being dominated by the increased strangeness production from the underlying event.
Item Description:Im Titel steht der Ausdruck sNN unter dem Wurzelsymbol, NN ist dabei tiefgestellt
Gesehen am 14.01.2026
ALICE Collaboration: S. Acharya, V. Anguelov, A. Berdnikova, L. Bergmann, V.J.G. Feuillard, I. Fokin, P. Glässel, M.W. Menzel, Y. Pachmayer, K. Reygers, R. Schicker, F. Schlepper, J.J. Seo, G. Skorodumovs, J. Stachel, S.F. Stiefelmaier, C.A. van Veen, B. Windelband, F. Zanone [und zahlreiche weitere]
Physical Description:Online Resource
ISSN:2469-9993
DOI:10.1103/PhysRevC.110.064912

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