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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. Hamagaki
  • R. 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
*Corresponding author for this work
  • Massachusetts Institute of Technology
  • High Energy Accelerator Research Organization, Tsukuba
  • Brookhaven National Laboratory
  • New York University
  • University of California at Riverside
  • University of Tsukuba
  • University of Maryland, College Park
  • The University of Tokyo
  • Yonsei University
  • Johns Hopkins University
  • Columbia University
  • Argonne National Laboratory
  • University of Illinois at Chicago
  • University of Rochester

Research output: Contribution to journalJournal articlepeer-review

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
StatePublished - 2000.03.9

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