| |  Online-Ressource |
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| Verfasst von: | Acharya, Shreyasi [VerfasserIn]  |
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| | Angelov, Venelin [VerfasserIn] |
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| | Arslandok, Mesut [VerfasserIn] |
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| | Danisch, Meike [VerfasserIn] |
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| | Feuillard, Victor [VerfasserIn] |
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| | Glässel, Peter [VerfasserIn] |
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| | Kim, Jiyoung [VerfasserIn] |
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| | Kim, Minjung [VerfasserIn] |
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| | Klewin, Sebastian [VerfasserIn] |
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| | Köhler, Markus Konrad [VerfasserIn] |
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| | Ohlson, Alice [VerfasserIn] |
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| | Pachmayer, Yvonne C. [VerfasserIn] |
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| | Reygers, Klaus [VerfasserIn] |
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| | Schicker, Rainer [VerfasserIn] |
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| | Schmidt, Marten Ole [VerfasserIn] |
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| | Stachel, Johanna [VerfasserIn] |
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| | Weiser, Dennis [VerfasserIn] |
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| | Windelband, Bernd [VerfasserIn] |
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| Titel: | Multiplicity dependence of light-flavor hadron production in pp collisions at √s=7 TeV |
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| Körperschaft: | ALICE [VerfasserIn] |
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| Verf.angabe: | S. Acharya et al. (ALICE Collaboration*) |
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| E-Jahr: | 2019 |
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| Jahr: | 8 February 2019 |
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| Umfang: | 30 S. |
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| Fussnoten: | Gesehen am 02.08.2019 ; *ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, S. Klewin, M.K. Köhler, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D.F. Weiser, B. Windelband [und 1003 weitere] |
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| Titel Quelle: | Enthalten in: Physical review |
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| Ort Quelle: | Woodbury, NY : Inst., 2016 |
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| Jahr Quelle: | 2019 |
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| Band/Heft Quelle: | 99(2019,2) Artikel-Nummer 024906, 30 Seiten |
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| ISSN Quelle: | 2469-9993 |
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| Abstract: | Comprehensive results on the production of unidentified charged particles, π±, K±, K0S, K∗(892)0, p, ¯p, ϕ(1020), Λ, ¯¯¯Λ, Ξ−, ¯¯¯Ξ+, Ω−, and ¯¯¯Ω+ hadrons in proton-proton (pp) collisions at √s=7 TeV at midrapidity (|y|<0.5) as a function of charged-particle multiplicity density are presented. In order to avoid autocorrelation biases, the actual transverse momentum (pT) spectra of the particles under study and the event activity are measured in different rapidity windows. In the highest multiplicity class, the charged-particle density reaches about 3.5 times the value measured in inelastic collisions. While the yield of protons normalized to pions remains approximately constant as a function of multiplicity, the corresponding ratios of strange hadrons to pions show a significant enhancement that increases with increasing strangeness content. Furthermore, all identified particle-to-pion ratios are shown to depend solely on charged-particle multiplicity density, regardless of system type and collision energy. The evolution of the spectral shapes with multiplicity and hadron mass shows patterns that are similar to those observed in p-Pb and Pb-Pb collisions at Large Hadron Collider energies. The obtained pT distributions and yields are compared to expectations from QCD-based pp event generators as well as to predictions from thermal and hydrodynamic models. These comparisons indicate that traces of a collective, equilibrated system are already present in high-multiplicity pp collisions. |
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| DOI: | doi:10.1103/PhysRevC.99.024906 |
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| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag: https://doi.org/10.1103/PhysRevC.99.024906 |
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| | Volltext: https://link.aps.org/doi/10.1103/PhysRevC.99.024906 |
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| | DOI: https://doi.org/10.1103/PhysRevC.99.024906 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1670496961 |
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| Verknüpfungen: | → Zeitschrift |
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Multiplicity dependence of light-flavor hadron production in pp collisions at √s=7 TeV / Acharya, Shreyasi [VerfasserIn]; 8 February 2019 (Online-Ressource)
