Abstract
Transverse momentum spectra of protons and anti-protons measured in the rapidity range 0 < y < 3.1 from 0-10% central Au + Au collisions at sqrt(sN N) = 62.4 GeV are presented. The rapidity densities, d N / d y, of protons, anti-protons and net-protons (Np - Nover(p, ̄)) have been deduced from the spectra over a rapidity range wide enough to observe the expected maximum net-baryon density. From mid-rapidity to y = 1 the net-proton yield is roughly constant (d N / d y ∼ 10), but rises to d N / d y ∼ 25 at 2.3 < y < 3.1. The mean rapidity loss is 2.01 ± 0.14 ± 0.12 units from beam rapidity. The measured rapidity distributions are compared to model predictions. Systematics of net-baryon distributions and rapidity loss vs. collision energy are discussed.
Original language | English (US) |
---|---|
Pages (from-to) | 267-271 |
Number of pages | 5 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 677 |
Issue number | 5 |
DOIs | |
State | Published - Jun 29 2009 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Nuclear stopping and rapidity loss in Au + Au collisions at sqrt(sN N) = 62.4 GeV. / Arsene, I. C.; Bearden, I. G.; Beavis, D.; Bekele, S.; Besliu, C.; Budick, B.; Bøggild, H.; Chasman, C.; Christensen, C. H.; Christiansen, P.; Dalsgaard, H. H.; Debbe, R.; Gaardhøje, J. J.; Hagel, K.; Ito, H.; Jipa, A.; Johnson, E. B.; Jørgensen, C. E.; Karabowicz, R.; Katrynska, N.; Kim, E. J.; Larsen, T. M.; Lee, J. H.; Løvhøiden, G.; Majka, Z.; Murray, M. J.; Natowitz, J.; Nielsen, B. S.; Nygaard, C.; Pal, D.; Qviller, A.; Rami, F.; Ristea, C.; Ristea, O.; Röhrich, D.; Sanders, S. J.; Staszel, P.; Tveter, T. S.; Videbæk, F.; Wada, R.; Yang, H.; Yin, Z.; Zgura, I. S.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 677, No. 5, 29.06.2009, p. 267-271.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Nuclear stopping and rapidity loss in Au + Au collisions at sqrt(sN N) = 62.4 GeV
AU - Arsene, I. C.
AU - Bearden, I. G.
AU - Beavis, D.
AU - Bekele, S.
AU - Besliu, C.
AU - Budick, B.
AU - Bøggild, H.
AU - Chasman, C.
AU - Christensen, C. H.
AU - Christiansen, P.
AU - Dalsgaard, H. H.
AU - Debbe, R.
AU - Gaardhøje, J. J.
AU - Hagel, K.
AU - Ito, H.
AU - Jipa, A.
AU - Johnson, E. B.
AU - Jørgensen, C. E.
AU - Karabowicz, R.
AU - Katrynska, N.
AU - Kim, E. J.
AU - Larsen, T. M.
AU - Lee, J. H.
AU - Løvhøiden, G.
AU - Majka, Z.
AU - Murray, M. J.
AU - Natowitz, J.
AU - Nielsen, B. S.
AU - Nygaard, C.
AU - Pal, D.
AU - Qviller, A.
AU - Rami, F.
AU - Ristea, C.
AU - Ristea, O.
AU - Röhrich, D.
AU - Sanders, S. J.
AU - Staszel, P.
AU - Tveter, T. S.
AU - Videbæk, F.
AU - Wada, R.
AU - Yang, H.
AU - Yin, Z.
AU - Zgura, I. S.
PY - 2009/6/29
Y1 - 2009/6/29
N2 - Transverse momentum spectra of protons and anti-protons measured in the rapidity range 0 < y < 3.1 from 0-10% central Au + Au collisions at sqrt(sN N) = 62.4 GeV are presented. The rapidity densities, d N / d y, of protons, anti-protons and net-protons (Np - Nover(p, ̄)) have been deduced from the spectra over a rapidity range wide enough to observe the expected maximum net-baryon density. From mid-rapidity to y = 1 the net-proton yield is roughly constant (d N / d y ∼ 10), but rises to d N / d y ∼ 25 at 2.3 < y < 3.1. The mean rapidity loss is 2.01 ± 0.14 ± 0.12 units from beam rapidity. The measured rapidity distributions are compared to model predictions. Systematics of net-baryon distributions and rapidity loss vs. collision energy are discussed.
AB - Transverse momentum spectra of protons and anti-protons measured in the rapidity range 0 < y < 3.1 from 0-10% central Au + Au collisions at sqrt(sN N) = 62.4 GeV are presented. The rapidity densities, d N / d y, of protons, anti-protons and net-protons (Np - Nover(p, ̄)) have been deduced from the spectra over a rapidity range wide enough to observe the expected maximum net-baryon density. From mid-rapidity to y = 1 the net-proton yield is roughly constant (d N / d y ∼ 10), but rises to d N / d y ∼ 25 at 2.3 < y < 3.1. The mean rapidity loss is 2.01 ± 0.14 ± 0.12 units from beam rapidity. The measured rapidity distributions are compared to model predictions. Systematics of net-baryon distributions and rapidity loss vs. collision energy are discussed.
UR - http://www.scopus.com/inward/record.url?scp=67049145347&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=67049145347&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2009.05.049
DO - 10.1016/j.physletb.2009.05.049
M3 - Article
AN - SCOPUS:67049145347
VL - 677
SP - 267
EP - 271
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 5
ER -