prikaz prve stranice dokumenta Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV
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Scientific paper - Original scientific paper
Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV
Physical Review C - Nuclear Physics, 77 (2008), 6; 061902(R). https://doi.org/10.1103/PhysRevC.77.061902
(STAR Collaboration) Abelev, B. I.; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Zuo, J. X.

Institutional repository: Repository of the Faculty of Science

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Abelev, B. I., Planinić, M., Poljak, N. & Zuo, J. X. (2008). Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV. Physical Review C - Nuclear Physics, 77. (6). doi: 10.1103/PhysRevC.77.061902

Abelev, B. I., et al. "Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV." Physical Review C - Nuclear Physics, vol. 77, no. 6, 2008. https://doi.org/10.1103/PhysRevC.77.061902

Abelev, B. I., Mirko Planinić, Nikola Poljak and J. X. Zuo. "Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV." Physical Review C - Nuclear Physics 77, no. 6 (2008). https://doi.org/10.1103/PhysRevC.77.061902

Abelev, B. I., et al. (2008) 'Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV', Physical Review C - Nuclear Physics, 77(6). doi: 10.1103/PhysRevC.77.061902

Abelev BI, Planinić M, Poljak N, Zuo JX. Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV. Physical Review C - Nuclear Physics [Internet]. 2008 [cited 2024 November 23];77(6). doi: 10.1103/PhysRevC.77.061902

B. I. Abelev, M. Planinić, N. Poljak and J. X. Zuo, "Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV", Physical Review C - Nuclear Physics, vol. 77, no. 6, 2008. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:106557. [Accessed: 23 November 2024]

Metadata
Title (english)Spin alignment measurements of the K*0(892) and ϕ(1020) vector mesons in heavy ion collisions at √sNN=200 GeV
AuthorB. I. Abelev
Author
...
AuthorMirko Planinić
Author
...
AuthorNikola Poljak
Author
...
AuthorJ. X. Zuo
CollaborationSTAR Collaboration
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
We present the first spin alignment measurements for the K*0(892) and ϕ(1020) vector mesons produced at midrapidity with transverse momenta up to 5 GeV/c at √sNN=200 GeV at RHIC. The diagonal spin-density matrix elements with respect to the reaction plane in Au+Au collisions are ρ00=0.32±0.04 (stat) ± 0.09 (syst) for the K*0 (0.8<p_T<5.0 GeV/c) and ρ_00=0.34±0.02 (stat) ± 0.03 (syst) for the ϕ (0.4<pT<5.0 GeV/c) and are constant with transverse momentum and collision centrality. The data are consistent with the unpolarized expectation of 1/3 and thus no evidence is found for the transfer of the orbital angular momentum of the colliding system to the vector-meson spins. Spin alignments for K*0 and ϕ in Au+Au collisions were also measured with respect to the particle's production plane. The ϕ result, ρ_00=0.41±0.02 (stat) ± 0.04 (syst), is consistent with that in p+p collisions, ρ_00=0.39±0.03 (stat) ± 0.06 (syst), also measured in this work. The measurements thus constrain the possible size of polarization phenomena in the production dynamics of vector mesons.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review C - Nuclear Physics
Numberingvol. 77, no. 6, 061902(R)
p-ISSN0556-2813
e-ISSN1089-490X
DOIhttps://doi.org/10.1103/PhysRevC.77.061902
URN:NBNurn:nbn:hr:217:106557
Publication2008
ProjectNumber: 119-0982887-1006
Title (croatian): Istraživanje hadronskih sustava upotrebom relativističkih projektila
Leader: Mirko Planinić
Jurisdiction: Croatia
Funding stream: ZP
Document URLhttp://link.aps.org/doi/10.1103/PhysRevC.77.061902
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2008) by the American Physical Society. Received 11 January 2008; published 12 June 2008.
Created on2019-10-19 16:18:54