Excitation function of K+ and π+ production in Au + Au reactions at 2-10 AGeV

L. Ahle, Y. Akiba, K. Ashktorab, M. D. Baker, D. Beavis, B. Budick, J. Chang, C. Chasman, Z. Chen, Y. Y. Chu, T. Chujo, J. Cumming, R. Debbe, J. C. Dunlop, W. Eldredge, K. Fleming, S. Y. Fung, E. Garcia, S. Gushue, H. HamagakiR. Hayano, G. H. Heintzelman, J. H. Kang, E. J. Kim, A. Kumagai, K. Kurita, J. H. Lee, Y. K. Lee, Y. Miake, A. C. Mignerey, M. Moulson, C. Muentz, K. Nagano, C. A. Ogilvie, J. Olness, K. Oyama, L. Remsberg, H. Sako, R. Seto, J. Shea, K. Shigaki, S. G. Steadman, G. S.F. Stephans, T. Tamagawa, M. J. Tannenbaum, S. Ueno-Hayashi, F. Videbaek, H. Xiang, F. Wang, K. Yagi, F. Zhu, B. B. Back, R. R. Betts, W. C. Chang, C. Y. Chi, J. B. Cumming, S. Y. Fung, R. Ganz, A. Gillitzer, W. F. Henning, D. J. Hofman, B. Holzman, S. Y. Kim, Y. Kwon, D. McLeod, V. Nanal, R. Pak, A. Ruangma, D. Russ, P. J. Stanskas, H. Wang, F. L.H. Wolfs, A. H. Wuosmaa, G. H. Xu, H. B. Yao, C. M. Zou

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Abstract

Positive pion and kaon production from Au + Au reactions have been measured as a function of beam energy over the range 2.0-10.7 AGeV. Both the kaon and the pion production cross-sections at mid-rapidity are observed to increase steadily with beam kinetic energy. The ratio of K+ to π+ mid-rapidity yields increases from 0.0271 ± 0.0015 ± 0.0014 at 2.0 AGeV to 0.202 ± 0.005 ± 0.010 at 10.7 AGeV and is larger than the K+/ π+ ratio from p + p reactions over the same beam energy region. There is no indication of a strong onset of any new production mechanism in heavy-ion reactions in this energy range beyond rescattering of hadrons. (C) 2000 Published by Elsevier Science B.V.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume476
Issue number1-2
DOIs
Publication statusPublished - 2000 Mar 9

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Ahle, L., Akiba, Y., Ashktorab, K., Baker, M. D., Beavis, D., Budick, B., Chang, J., Chasman, C., Chen, Z., Chu, Y. Y., Chujo, T., Cumming, J., Debbe, R., Dunlop, J. C., Eldredge, W., Fleming, K., Fung, S. Y., Garcia, E., Gushue, S., ... Zou, C. M. (2000). Excitation function of K+ and π+ production in Au + Au reactions at 2-10 AGeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 476(1-2), 1-8. https://doi.org/10.1016/S0370-2693(00)00037-X