Nuclear dependence of high-xt hadron and high- hadron-pair production in p-A interactions at s =38.8 GeV

P. B. Straub, D. E. Jaffe, H. D. Glass, M. R. Adams, C. N. Brown, G. Charpak, W. E. Cooper, J. A. Crittenden, D. A. Finley, R. Gray, Y. Hemmi, Y. B. Hsiung, J. R. Hubbard, A. M. Jonckheere, H. Jöstlein, D. M. Kaplan, L. M. Lederman, K. B. Luk, A. Maki, Ph MangeotR. L. McCarthy, K. Miyake, R. E. Plaag, J. P. Rutherfoord, Y. Sakai, J. C. Santiard, F. Sauli, S. R. Smith, T. Yoshida, K. K. Young

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75 Scopus citations

Abstract

We present a high-statistics, species-identified measurement of the W-to-Be per-nucleon cross-section ratio, RW/Be, for high-xt hadrons and high- h+h- pairs produced in p-A collisions at s =38.8 GeV. The data extend to 0.62 in xt and 0.39 in . For single hadrons, RW/Be peaks at pt5 GeV/c and decreases to 1 for mesons with pt>8 GeV/c. At fixed pt, RW/Be falls with s. For symmetric pairs with >0.28, RW/Be=0.84±0.02±0.07, suggesting a nuclear suppression of high-z fragmentation. RW/Be increases with pout, indicative of constituent multiple scattering.

Original languageEnglish (US)
Pages (from-to)452-455
Number of pages4
JournalPhysical review letters
Volume68
Issue number4
DOIs
StatePublished - Jan 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Straub, P. B., Jaffe, D. E., Glass, H. D., Adams, M. R., Brown, C. N., Charpak, G., Cooper, W. E., Crittenden, J. A., Finley, D. A., Gray, R., Hemmi, Y., Hsiung, Y. B., Hubbard, J. R., Jonckheere, A. M., Jöstlein, H., Kaplan, D. M., Lederman, L. M., Luk, K. B., Maki, A., ... Young, K. K. (1992). Nuclear dependence of high-xt hadron and high- hadron-pair production in p-A interactions at s =38.8 GeV. Physical review letters, 68(4), 452-455. https://doi.org/10.1103/PhysRevLett.68.452