Centrality dependence of K+ and π+ multiplicities from Si + A collisions at 14.6 A GeV/c

T. Abbott, Y. Akiba, D. Beavis, M. A. Bloomer, P. D. Bond, C. Chasman, Z. Chen, Y. Y. Chu, B. A. Cole, J. B. Costales, H. J. Crawford, J. B. Cumming, R. Debbe, J. Engelage, S. Y. Fung, M. Gonin, S. Gushue, H. Hamagaki, O. Hansen, R. S. HayanoS. Hayashi, S. Homma, H. Z. Huang, Y. Ikeda, I. Juricic, J. Kang, S. Katcoff, S. Kaufman, K. Kimura, K. Kitamura, K. Kurita, R. J. Ledoux, M. J. Le Vine, Y. Miake, R. J. Morse, B. Moskowitz, S. Nagamiya, J. Olness, C. G. Parsons, L. P. Remsberg, H. Sakurai, M. Sarabura, P. Stankus, S. G. Steadman, G. S.F. Stephans, T. Sugitate, M. J. Tannenbaum, J. H. Van Dijk, F. Videbaek, M. Vient, P. Vincent, V. Vutsadakis, H. E. Wegner, D. S. Woodruff, Y. D. Wu, W. Zajc

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K+ and π+ multiplicities have been measured in magnetic spectrometer for Si++ Al, Si+ Cu and Si + Au collisions at 14.6 A GeV/c incident momentum. The multiplicities were obtained for five different windows of forward kinetic energy as detected in a zero degree calorimeter. The K++ multiplicity ratio ranges from ≈9% in peripheral interactions to 19% in central Si+Au. The largest K+ / π+ ratios are observed for those events for each target that leave the least energy in the zero degree calorimeter and the ratio increases with target mass. The observations suggest that multiple interactions are important in the particle production mechanism.

Original languageEnglish
Pages (from-to)341-346
Number of pages6
JournalPhysics Letters B
Issue number3
Publication statusPublished - 1992 Sep 24

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Abbott, T., Akiba, Y., Beavis, D., Bloomer, M. A., Bond, P. D., Chasman, C., Chen, Z., Chu, Y. Y., Cole, B. A., Costales, J. B., Crawford, H. J., Cumming, J. B., Debbe, R., Engelage, J., Fung, S. Y., Gonin, M., Gushue, S., Hamagaki, H., Hansen, O., ... Zajc, W. (1992). Centrality dependence of K+ and π+ multiplicities from Si + A collisions at 14.6 A GeV/c. Physics Letters B, 291(3), 341-346. https://doi.org/10.1016/0370-2693(92)91056-F