Rapidity and centrality dependence of particle production for identified hadrons in Cu + Cu collisions at GeV
Abstract
The BRAHMS collaboration has measured transverse momentum spectra of pions, kaons, protons, and antiprotons at rapidities 0 and 3 for Cu+Cu collisions at GeV. As the collisions become more central the collective radial flow increases while the temperature of kinetic freeze-out decreases. The temperature is lower and the radial flow weaker at forward rapidity. Pion and kaon yields with transverse momenta between 1.5 and 2.5 GeV/c are suppressed for central collisions relative to scaled p + p collisions. This suppression, which increases as the collisions become more central, is consistent with jet quenching models and is also present with comparable magnitude at forward rapidity. At such rapidities, initial state effects may also be present and persistence of the meson suppression to high rapidity may reflect a combination of jet quenching and nuclear shadowing. In conclusion, the ratio of protons to mesons increases as the collisions become more central and is largest at forward rapidities.
- Authors:
-
- Univ. of Oslo (Norway). Department of Physics. et al.
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Org.:
- BRAHMS Collaboration
- OSTI Identifier:
- 1340370
- Alternate Identifier(s):
- OSTI ID: 1266411
- Report Number(s):
- BNL-112479-2016-JA
Journal ID: ISSN 2469-9985; R&D Project: PO 004; KB0202012; TRN: US1701777
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. C
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 1; Journal ID: ISSN 2469-9985
- Publisher:
- APS
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Relativistic Heavy Ion Collider
Citation Formats
Arsene, I. C. Rapidity and centrality dependence of particle production for identified hadrons in Cu + Cu collisions at sNN=200 GeV. United States: N. p., 2016.
Web. doi:10.1103/PhysRevC.94.014907.
Arsene, I. C. Rapidity and centrality dependence of particle production for identified hadrons in Cu + Cu collisions at sNN=200 GeV. United States. https://doi.org/10.1103/PhysRevC.94.014907
Arsene, I. C. Wed .
"Rapidity and centrality dependence of particle production for identified hadrons in Cu + Cu collisions at sNN=200 GeV". United States. https://doi.org/10.1103/PhysRevC.94.014907. https://www.osti.gov/servlets/purl/1340370.
@article{osti_1340370,
title = {Rapidity and centrality dependence of particle production for identified hadrons in Cu + Cu collisions at sNN=200 GeV},
author = {Arsene, I. C.},
abstractNote = {The BRAHMS collaboration has measured transverse momentum spectra of pions, kaons, protons, and antiprotons at rapidities 0 and 3 for Cu+Cu collisions at sNN=200 GeV. As the collisions become more central the collective radial flow increases while the temperature of kinetic freeze-out decreases. The temperature is lower and the radial flow weaker at forward rapidity. Pion and kaon yields with transverse momenta between 1.5 and 2.5 GeV/c are suppressed for central collisions relative to scaled p + p collisions. This suppression, which increases as the collisions become more central, is consistent with jet quenching models and is also present with comparable magnitude at forward rapidity. At such rapidities, initial state effects may also be present and persistence of the meson suppression to high rapidity may reflect a combination of jet quenching and nuclear shadowing. In conclusion, the ratio of protons to mesons increases as the collisions become more central and is largest at forward rapidities.},
doi = {10.1103/PhysRevC.94.014907},
journal = {Physical Review. C},
number = 1,
volume = 94,
place = {United States},
year = {Wed Jul 20 00:00:00 EDT 2016},
month = {Wed Jul 20 00:00:00 EDT 2016}
}
Web of Science
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