prikaz prve stranice dokumenta ρ0 photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV
  Download
PDF 490.93 KB
Scientific paper - Original scientific paper
ρ0 photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV
Physical Review C - Nuclear Physics, 77 (2008), 3; 034910. https://doi.org/10.1103/PhysRevC.77.034910
(STAR Collaboration) Abelev, B. I.; ...; Planinić, Mirko; ...; Poljak, Nikola; ...; Zuo, J. X.

Institutional repository: Repository of the Faculty of Science

Cite this document

Abelev, B. I., Planinić, M., Poljak, N. & Zuo, J. X. (2008). ρ0 photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV. Physical Review C - Nuclear Physics, 77. (3). doi: 10.1103/PhysRevC.77.034910

Abelev, B. I., et al. "ρ0 photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV." Physical Review C - Nuclear Physics, vol. 77, no. 3, 2008. https://doi.org/10.1103/PhysRevC.77.034910

Abelev, B. I., Mirko Planinić, Nikola Poljak and J. X. Zuo. "ρ0 photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV." Physical Review C - Nuclear Physics 77, no. 3 (2008). https://doi.org/10.1103/PhysRevC.77.034910

Abelev, B. I., et al. (2008) 'ρ0 photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV', Physical Review C - Nuclear Physics, 77(3). doi: 10.1103/PhysRevC.77.034910

Abelev BI, Planinić M, Poljak N, Zuo JX. ρ0 photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV. Physical Review C - Nuclear Physics [Internet]. 2008 [cited 2024 November 23];77(3). doi: 10.1103/PhysRevC.77.034910

B. I. Abelev, M. Planinić, N. Poljak and J. X. Zuo, "ρ0 photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV", Physical Review C - Nuclear Physics, vol. 77, no. 3, 2008. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:269837. [Accessed: 23 November 2024]

Metadata
Title (english)ρ0 photoproduction in ultraperipheral relativistic 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)
Photoproduction reactions occur when the electromagnetic field of a relativistic heavy ion interacts with another heavy ion. The STAR Collaboration presents a measurement of ρ^0 and direct π^+π^− photoproduction in ultraperipheral relativistic heavy ion collisions at √sNN=200 GeV. We observe both exclusive photoproduction and photoproduction accompanied by mutual Coulomb excitation. We find a coherent cross section of σ(AuAu→Au^∗Au^∗ρ^0)=530±19(stat.)±57(syst.) mb, in accord with theoretical calculations based on a Glauber approach, but considerably below the predictions of a color dipole model. The ρ^0 transverse momentum spectrum (p^2_T) is fit by a double exponential curve including both coherent and incoherent coupling to the target nucleus; we find σ_inc/σ_coh=0.29±0.03(stat.)±0.08(syst.). The ratio of direct π+π− to ρ^0 production is comparable to that observed in γp collisions at HERA and appears to be independent of photon energy. Finally, the measured ρ^0 spin helicity matrix elements agree within errors with the expected s-channel helicity conservation.
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. 3, 034910
p-ISSN0556-2813
e-ISSN1089-490X
DOIhttps://doi.org/10.1103/PhysRevC.77.034910
URN:NBNurn:nbn:hr:217:269837
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.77.034910
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public noteCopyright (2008) by the American Physical Society. Received 21 December 2007; published 31 March 2008.
Created on2019-10-18 21:10:07