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Investigating strangeness enhancement in jet and medium via 𝜙⁡(1020) production in 𝑝-Pb collisions at √𝑠𝑁⁢𝑁=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 (ℎ) acting as a jet proxy and a produced strange hadron [𝜙⁡(1020) meson]. Measuring ℎ−𝜙 correlations...

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Hauptverfasser: Acharya, Shreyasi (Verfasst von) , Angelov, Venelin (Verfasst von) , Berdnikova, Anastasia (Verfasst von) , Bergmann, Luisa (Verfasst von) , Feuillard, Victor (Verfasst von) , Fokin, Ilya D. (Verfasst von) , Glässel, Peter (Verfasst von) , Menzel, Marius (Verfasst von) , Pachmayer, Yvonne C. (Verfasst von) , Reygers, Klaus (Verfasst von) , Schicker, Rainer (Verfasst von) , Schlepper, Felix (Verfasst von) , Seo, Jinjoo (Verfasst von) , Skorodumovs, Georgijs (Verfasst von) , Stachel, Johanna (Verfasst von) , Stiefelmaier, Stephan (Verfasst von) , Veen, Casper Arie van (Verfasst von) , Windelband, Bernd (Verfasst von) , Zanone, Federica (Verfasst von)
Körperschaft: ALICE (Verfasst von)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 27 December 2024
In: Physical review
Year: 2024, Jahrgang: 110, Heft: 6, Pages: 1-18
ISSN:2469-9993
DOI:10.1103/PhysRevC.110.064912
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevC.110.064912
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.110.064912
Volltext
Verfasserangaben:ALICE Collaboration
Beschreibung
Zusammenfassung: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 (ℎ) acting as a jet proxy and a produced strange hadron [𝜙⁡(1020) meson]. Measuring ℎ−𝜙 correlations at midrapidity in 𝑝-Pb collisions at √𝑠𝑁⁢𝑁=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 ℎ−𝜙 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 ℎ−𝜙 and dihadron correlations show that the observed strangeness enhancement is largely driven by the underlying event, where the 𝜙/ℎ ratio is significantly larger than within the jet regions. As multiplicity increases, the fraction of the total 𝜙⁡(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.
Beschreibung: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]
Beschreibung:Online Resource
ISSN:2469-9993
DOI:10.1103/PhysRevC.110.064912

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