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| Verfasst von: | Acharya, Shreyasi [VerfasserIn]  |
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| | Leardini, Lucia [VerfasserIn] |
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| | López, Jorge [VerfasserIn] |
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| | Martin, Nicole Alice [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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| | Stiefelmaier, Stephan [VerfasserIn] |
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| | Windelband, Bernd [VerfasserIn] |
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| | Yüncü, Alperen [VerfasserIn] |
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| Titel: | First measurement of quarkonium polarization in nuclear collisions at the LHC |
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| Körperschaft: | ALICE (Körperschaft) [VerfasserIn] |
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| Verf.angabe: | ALICE collaboration: S. Acharya, L. Leardini, J.A. Lopez, N.A. Martin, A. Ohlson, Y. Pachmayer, K. Reygers, R. Schicker, A. Schmah, M.O. Schmidt, J. Stachel, S.F. Stiefelmaier, B. Windelband, A. Yuncu [und viele weitere] |
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| E-Jahr: | 2021 |
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| Jahr: | 22 February 2021 |
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| Umfang: | 13 S. |
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| Fussnoten: | Gesehen am 18.06.2021 |
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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: | 2021 |
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| Band/Heft Quelle: | 815(2021), Artikel-ID 136146, Seite 1-13 |
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| ISSN Quelle: | 1873-2445 |
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| Abstract: | The polarization of inclusive J/ψ and ϒ(1S) produced in Pb-Pb collisions at sNN=5.02 TeV at the LHC is measured with the ALICE detector. The study is carried out by reconstructing the quarkonium through its decay to muon pairs in the rapidity region 2.5<y<4 and measuring the polar and azimuthal angular distributions of the muons. The polarization parameters λθ, λϕ and λθϕ are measured in the helicity and Collins-Soper reference frames, in the transverse momentum interval 2<pT<10 GeV/c and pT<15 GeV/c for the J/ψ and ϒ(1S), respectively. The polarization parameters for the J/ψ are found to be compatible with zero, within a maximum of about two standard deviations at low pT, for both reference frames and over the whole pT range. The values are compared with the corresponding results obtained for pp collisions at s=7 and 8 TeV in a similar kinematic region by the ALICE and LHCb experiments. Although with much larger uncertainties, the polarization parameters for ϒ(1S) production in Pb-Pb collisions are also consistent with zero. |
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| DOI: | doi:10.1016/j.physletb.2021.136146 |
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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/10.1016/j.physletb.2021.136146 |
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| | Volltext: https://www.sciencedirect.com/science/article/pii/S0370269321000861 |
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| | DOI: https://doi.org/10.1016/j.physletb.2021.136146 |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| K10plus-PPN: | 1760868329 |
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| Verknüpfungen: | → Zeitschrift |
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First measurement of quarkonium polarization in nuclear collisions at the LHC / Acharya, Shreyasi [VerfasserIn]; 22 February 2021 (Online-Ressource)
