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Rapidity and centrality dependence of particle production for identified hadrons in Cu + Cu collisions at s NN =200 GeV

Arsene, I. C.; Bearden, I. G.; Beavis, D.; Bekele, S.; Besliu, C.; Budick, B.; Bøggild, H.; Chasman, C.; Christensen, C. H. and Christiansen, P. LU , et al. (2016) In Physical Review C - Nuclear Physics 94(1).
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 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... (More)

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. The ratio of protons to mesons increases as the collisions become more central and is largest at forward rapidities.

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Physical Review C - Nuclear Physics
volume
94
issue
1
publisher
American Physical Society
external identifiers
  • scopus:84979626588
  • wos:000380109400002
ISSN
0556-2813
DOI
10.1103/PhysRevC.94.014907
language
English
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yes
id
16c4398d-012f-4eda-95c3-f01d64b5edb3
date added to LUP
2017-01-25 08:12:58
date last changed
2017-09-18 11:33:43
@article{16c4398d-012f-4eda-95c3-f01d64b5edb3,
  abstract     = {<p>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. The ratio of protons to mesons increases as the collisions become more central and is largest at forward rapidities.</p>},
  articleno    = {014907},
  author       = {Arsene, I. C. and Bearden, I. G. and Beavis, D. and Bekele, S. and Besliu, C. and Budick, B. and Bøggild, H. and Chasman, C. and Christensen, C. H. and Christiansen, P. and Dalsgaard, H. H. and Debbe, R. and Gaardhøje, J. J. and Hagel, K. and Ito, H. and Jipa, A. and Johnson, E. B. and Jørgensen, C. E. and Karabowicz, R. and Katrynska, N. and Kim, E. J. and Larsen, T. M. and Lee, J. H. and Løvhøiden, G. and Majka, Z. and Murray, M. J. and Natowitz, J. and Nielsen, B. S. and Nygaard, C. and Pal, D. and Qviller, A. and Rami, F. and Ristea, C. and Ristea, O. and Röhrich, D. and Sanders, S. J. and Staszel, P. and Tveter, T. S. and Videbæk, F. and Wada, R. and Yang, H. and Yin, Z. and Zgura, I. S.},
  issn         = {0556-2813},
  language     = {eng},
  month        = {07},
  number       = {1},
  publisher    = {American Physical Society},
  series       = {Physical Review C - Nuclear Physics},
  title        = {Rapidity and centrality dependence of particle production for identified hadrons in Cu + Cu collisions at s NN =200 GeV},
  url          = {http://dx.doi.org/10.1103/PhysRevC.94.014907},
  volume       = {94},
  year         = {2016},
}