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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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| | Köhler, Markus Konrad [VerfasserIn] |
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| | Leardini, Lucia [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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| | Schmah, Alexander [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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| | Yüncü, Alperen [VerfasserIn] |
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| Titel: | Evidence of rescattering effect in Pb-Pb collisions at the LHC through production of K*(892)(0) and [phi](1020) mesons |
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| Körperschaft: | ALICE (Körperschaft) [VerfasserIn] |
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| Verf.angabe: | ALICE Collaboration |
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| E-Jahr: | 2020 |
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| Jahr: | 16 January 2020 |
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| Umfang: | 14 S. |
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| Fussnoten: | Im Titel ist die 0 hochgestellt, das phi ist als griechisches Zeichen dargestellt ; ALICE Collaboration: S. Acharya, V. Anguelov, M. Arslandok, M.C. Danisch, V.J.G. Feuillard, P. Glässel, J. Kim, M. Kim, 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 1004 weitere ; Gesehen am 28.04.2020 |
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| Titel Quelle: | Enthalten in: Physics letters / B |
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| Ort Quelle: | Amsterdam : North-Holland Publ., 1967 |
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| Jahr Quelle: | 2020 |
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| Band/Heft Quelle: | 802(2020) Artikel-Nummer 135225, 14 Seiten |
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| ISSN Quelle: | 1873-2445 |
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| Abstract: | Measurements of K*(892)(0) and phi(1020) resonance production in Pb-Pb and pp collisions at root s(NN) = 5.02 TeV with the ALICE detector at the Large Hadron Collider are reported. The resonances are measured at midrapidity (vertical bar y vertical bar < 0.5) via their hadronic decay channels and the transverse momentum (p(T)) distributions are obtained for various collision centrality classes up to p(T) = 20 GeV/c. The p(T)-integrated yield ratio K*(892)(0)/K in Pb-Pb collisions shows significant suppression relative to pp collisions and decreases towards more central collisions. In contrast, the phi(1020)/K ratio does not show any suppression. Furthermore, the measured K*(892)(0)/K ratio in central Pb-Pb collisions is significantly suppressed with respect to the expectations based on a thermal model calculation, while the phi(1020)/K ratio agrees with the model prediction. These measurements are an experimental demonstration of rescattering of K*(892)(0) decay products in the hadronic phase of the collisions. The K*(892)(0)/K yield ratios in Pb-Pb and pp collisions are used to estimate the time duration between chemical and kinetic freeze-out, which is found to be similar to 4-7 fm/c for central collisions. The p(T)-differential ratios of K*(892)(0)/K, phi(1020)/K, K*(892)(0)/pi, phi(1020)/pi, p/K*(892)(0) and p/phi(1020) are also presented for Pb-Pb and pp collisions at root s(NN) = 5.02 TeV. These ratios show that the rescattering effect is predominantly a low-p(T) phenomenon. (C) 2020 The Author(s). Published by Elsevier B.V. |
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| DOI: | doi:10.1016/j.physletb.2020.135225 |
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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: https://doi.org/10.1016/j.physletb.2020.135225 |
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| | DOI: https://doi.org/10.1016/j.physletb.2020.135225 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Sach-SW: | au+au |
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| | energy |
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| | freeze-out |
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| | matter |
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| | perspective |
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| | physics |
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| | pions |
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| | quark-gluon plasma |
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| | resonance production |
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| | root-s(nn)=200 gev |
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| K10plus-PPN: | 1696297648 |
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| Verknüpfungen: | → Zeitschrift |
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Evidence of rescattering effect in Pb-Pb collisions at the LHC through production of K*(892)(0) and [phi](1020) mesons / Acharya, Shreyasi [VerfasserIn]; 16 January 2020 (Online-Ressource)
