@article{ee58c408bfc94495a578c345734da68a,
title = "Kaon and pion production in central Au + Au collisions at sqrt(sNN) = 62.4 GeV",
abstract = "Invariant pT spectra and rapidity densities covering a large rapidity range (- 0.1 < y < 3.5) are presented for π± and K± mesons from central Au + Au collisions at sqrt(sNN) = 62.4 GeV. The mid-rapidity yields of meson particles relative to their anti-particles are found to be close to unity (π- / π+ ∼ 1, K- / K+ ∼ 0.85) while the anti-proton to proton ratio is over(p,{\= }) / p ∼ 0.49. The rapidity dependence of the π- / π+ ratio is consistent with a small increase towards forward rapidities while the K- / K+ and over(p,{\= }) / p ratios show a steep decrease to ∼0.3 for kaons and 0.022 for protons at y ∼ 3. It is observed that the kaon production relative to its own anti-particle as well as to pion production in wide rapidity and energy ranges shows an apparent universal behavior consistent with the baryo-chemical potential, as deduced from the over(p,{\= }) / p ratio, being the driving parameter.",
keywords = "Baryon chemical potential, Heavy ion collisions, Strangeness enhancement",
author = "Arsene, {I. C.} and Bearden, {I. G.} and D. Beavis and S. Bekele and C. Besliu and B. Budick and H. B{\o}ggild and C. Chasman and Christensen, {C. H.} and P. Christiansen and Dalsgaard, {H. H.} and R. Debbe and Gaardh{\o}je, {J. J.} and K. Hagel and H. Ito and A. Jipa and Johnson, {E. B.} and J{\o}rgensen, {C. E.} and R. Karabowicz and N. Katrynska and Kim, {E. J.} and Larsen, {T. M.} and Lee, {J. H.} and G. L{\o}vh{\o}iden and Z. Majka and Murray, {M. J.} and J. Natowitz and Nielsen, {B. S.} and C. Nygaard and D. Pal and A. Qviller and F. Rami and C. Ristea and O. Ristea and D. R{\"o}hrich and Sanders, {S. J.} and P. Staszel and Tveter, {T. S.} and F. Videb{\ae}k and R. Wada and H. Yang and Z. Yin and Zgura, {I. S.}",
note = "Funding Information: This work was supported by the Division of Nuclear Physics of the Office of Science of the U.S. Department of Energy under contracts DE-AC02-98-CH10886 , DE-FG03-93-ER40773 , DE-FG03-96-ER40981 , and DE-FG02-99-ER41121 , the Danish Natural Science Research Council , the Research Council of Norway , the Polish Ministry of Science and Higher Education (Contract No. 1248/B/H03/2009/36 ), and the Romanian Ministry of Education and Research ( 5003/1999 , 6077/2000 ). We thank the staff of the Collider-Accelerator Division at BNL and the RHIC Computing Facility for their support to the experiment.",
year = "2010",
month = apr,
day = "5",
doi = "10.1016/j.physletb.2010.02.078",
language = "English (US)",
volume = "687",
pages = "36--41",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier B.V.",
number = "1",
}