prikaz prve stranice dokumenta Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV
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Scientific paper - Original scientific paper
Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV
Physical Review Letters, 113 (2014), 2; 022301. https://doi.org/10.1103/PhysRevLett.113.022301
(STAR Collaboration) Adamczyk, L.; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Zyzak, M.

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Adamczyk, L., Planinić, M., Poljak, N. & Zyzak, M. (2014). Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV. Physical Review Letters, 113. (2). doi: 10.1103/PhysRevLett.113.022301

Adamczyk, L., et al. "Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV." Physical Review Letters, vol. 113, no. 2, 2014. https://doi.org/10.1103/PhysRevLett.113.022301

Adamczyk, L., Mirko Planinić, Nikola Poljak and M. Zyzak. "Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV." Physical Review Letters 113, no. 2 (2014). https://doi.org/10.1103/PhysRevLett.113.022301

Adamczyk, L., et al. (2014) 'Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV', Physical Review Letters, 113(2). doi: 10.1103/PhysRevLett.113.022301

Adamczyk L, Planinić M, Poljak N, Zyzak M. Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV. Physical Review Letters [Internet]. 2014 [cited 2025 January 06];113(2). doi: 10.1103/PhysRevLett.113.022301

L. Adamczyk, M. Planinić, N. Poljak and M. Zyzak, "Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV", Physical Review Letters, vol. 113, no. 2, 2014. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:634776. [Accessed: 06 January 2025]

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Metadata
Title (english)Dielectron Mass Spectra from Au+Au Collisions at √sNN = 200 GeV
AuthorL. Adamczyk
Author
...
AuthorMirko Planinić
Author
...
AuthorNikola Poljak
Author
...
AuthorM. Zyzak
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 report the STAR measurements of dielectron (e+e−) production at midrapidity (|yee|<1) in Au+Au collisions at √sNN=200  GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30–0.76 (ρ-like), 0.76–0.80 (ω-like), and 0.98–1.05 (ϕ-like)   GeV/c2. The spectrum in the ω-like and ϕ-like regions can be well described by the hadronic cocktail simulation. In the ρ-like region, however, the vacuum ρ spectral function cannot describe the shape of the dielectron excess. In this range, an enhancement of 1.77±0.11(stat)±0.24(syst)±0.33(cocktail) is determined with respect to the hadronic cocktail simulation that excludes the ρ meson. The excess yield in the ρ-like region increases with the number of collision participants faster than the ω and ϕ yields. Theoretical models with broadened ρ contributions through interactions with constituents in the hot QCD medium provide a consistent description of the dilepton mass spectra for the measurement presented here and the earlier data at the Super Proton Synchrotron energies.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review Letters
Numberingvol. 113, no. 2, 022301
p-ISSN0031-9007
e-ISSN1079-7114
DOIhttps://doi.org/10.1103/PhysRevLett.113.022301
URN:NBNurn:nbn:hr:217:634776
Publication2014
Document URLhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.022301
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2014) by the American Physical Society. Received 31 December 2013; published 9 July 2014; publisher error corrected 14 July 2014.
Created on2019-12-01 17:46:46