prikaz prve stranice dokumenta Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV
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Scientific paper - Original scientific paper
Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV
Physical Review Letters, 128 (2022), 17; 172005. https://doi.org/10.1103/PhysRevLett.128.172005
(ALICE Collaboration) Acharya, S.; ...; Erhardt, Filip; ...; Gotovac, Sven; ...; Jerčić, Marko; ...; Karatović, David; ...; Lončar, Petra; ...; Mudnić, Eugen; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Vicković, Linda; ...; Zurlo, N. More authors...

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Acharya, S., Erhardt, F., Gotovac, S., Jerčić, M., Karatović, D., Lončar, P. ... Zurlo, N. (2022). Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV. Physical Review Letters, 128. (17). doi: 10.1103/PhysRevLett.128.172005

Acharya, S., et al. "Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV." Physical Review Letters, vol. 128, no. 17, 2022. https://doi.org/10.1103/PhysRevLett.128.172005

Acharya, S., Filip Erhardt, Sven Gotovac, Marko Jerčić, David Karatović, Petra Lončar, Eugen Mudnić, et al. "Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV." Physical Review Letters 128, no. 17 (2022). https://doi.org/10.1103/PhysRevLett.128.172005

Acharya, S., et al. (2022) 'Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV', Physical Review Letters, 128(17). doi: 10.1103/PhysRevLett.128.172005

Acharya S, Erhardt F, Gotovac S, Jerčić M, Karatović D, Lončar P, and sur.. Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV. Physical Review Letters [Internet]. 2022 [cited 2024 December 19];128(17). doi: 10.1103/PhysRevLett.128.172005

S. Acharya, et al., "Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV", Physical Review Letters, vol. 128, no. 17, 2022. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:434962. [Accessed: 19 December 2024]

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Metadata
Title (english)Polarization of Λ and Λˉ Hyperons along the Beam Direction in Pb-Pb Collisions at √sNN = 5.02  TeV
AuthorS. Acharya
Author
...
AuthorFilip Erhardt
Author
...
AuthorSven Gotovac
Author
...
AuthorMarko Jerčić
Author
...
AuthorDavid Karatović
Author
...
AuthorPetra Lončar
Author
...
AuthorEugen Mudnić
Author
...
AuthorMirko Planinić
Author
...
AuthorNikola Poljak
Author
...
AuthorLinda Vicković
Author
...
AuthorN. Zurlo
CollaborationALICE Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The polarization of the Λ and Λ¯ hyperons along the beam (z) direction, Pz, has been measured in Pb-Pb collisions at sNN=5.02 TeV recorded with ALICE at the Large Hadron Collider (LHC). The main contribution to Pz comes from elliptic flow-induced vorticity and can be characterized by the second Fourier sine coefficient Pz, s2=⟨Pzsin(2φ-2Ψ2)⟩, where φ is the hyperon azimuthal emission angle and Ψ2 is the elliptic flow plane angle. We report the measurement of Pz, s2 for different collision centralities and in the 30%–50% centrality interval as a function of the hyperon transverse momentum and rapidity. The Pz, s2 is positive similarly as measured by the STAR Collaboration in Au-Au collisions at sNN=200 GeV, with somewhat smaller amplitude in the semicentral collisions. This is the first experimental evidence of a nonzero hyperon Pz in Pb-Pb collisions at the LHC. The comparison of the measured Pz, s2 with the hydrodynamic model calculations shows sensitivity to the competing contributions from thermal and the recently found shear-induced vorticity, as well as to whether the polarization is acquired at the quark-gluon plasma or the hadronic phase.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review Letters
Numberingvol. 128, no. 17, 172005
p-ISSN0031-9007
e-ISSN1079-7114
DOIhttps://doi.org/10.1103/PhysRevLett.128.172005
URN:NBNurn:nbn:hr:217:434962
Publication2022
Document URLhttps://link.aps.org/doi/10.1103/PhysRevLett.128.172005
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public note© 2022 CERN, for the ALICE Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 3 September 2021; Revised 4 January 2022; Accepted 16 March 2022; Published 29 April 2022.
Created on2023-09-13 20:40:59