K*(892)0 and [phi](1020) meson production at high transverse momentum in pp and Pb-Pb collisions at √sNN=2.76 TeV
The production of K∗(892)0 and ϕ(1020) mesons in proton-proton (pp) and lead-lead (Pb-Pb) collisions at √sNN=2.76TeV has been analyzed using a high luminosity data sample accumulated in 2011 with the ALICE detector at the Large Hadron Collider (LHC). Transverse momentum (pT) spectra have been measur...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
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12 June 2017
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| In: |
Physical review
Year: 2017, Jahrgang: 95, Heft: 6 |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.95.064606 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevC.95.064606 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.95.064606 
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| Verfasserangaben: | J. Adam et al.* (ALICE Collaboration ) |
| Zusammenfassung: | The production of K∗(892)0 and ϕ(1020) mesons in proton-proton (pp) and lead-lead (Pb-Pb) collisions at √sNN=2.76TeV has been analyzed using a high luminosity data sample accumulated in 2011 with the ALICE detector at the Large Hadron Collider (LHC). Transverse momentum (pT) spectra have been measured for K∗(892)0 and ϕ(1020) mesons via their hadronic decay channels for pT up to 20GeV/c. The measurements in pp collisions have been compared to model calculations and used to determine the nuclear modification factor and particle ratios. The K∗(892)0/K ratio exhibits significant reduction from pp to central Pb-Pb collisions, consistent with the suppression of the K∗(892)0 yield at low pT due to rescattering of its decay products in the hadronic phase. In central Pb-Pb collisions the pT dependent ϕ(1020)/π and K∗(892)0/π ratios show an enhancement over pp collisions for pT≈3GeV/c, consistent with previous observations of strong radial flow. At high pT, particle ratios in Pb-Pb collisions are similar to those measured in pp collisions. In central Pb-Pb collisions, the production of K∗(892)0 and ϕ(1020) mesons is suppressed for pT>8GeV/c. This suppression is similar to that of charged pions, kaons, and protons, indicating that the suppression does not depend on particle mass or flavor in the light quark sector. |
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| Beschreibung: | Im Titel wird "phi" als griechischer Buchstabe dargestellt Im Text steht nach K das typografische Zeichen für Sternchen Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt Im Titel ist "0" hochgestellt Gesehen am 18.08.2020 ALICE Collaboration: J. Adam, V. Anguelov, M. Arslandok, M.C. Danisch, A. Deisting, P. Glässel, J. Kim, S. Klewin, L. Leardini, J. Mercado Pérez, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, M.O. Schmidt, J. Stachel, D.F. Weiser, B. Windelband [und weitere] |
| Beschreibung: | Online Resource |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.95.064606 |