Nuclear dependence of Drell-Yan and J/ψ production in FNAL E866

R. E. Tribble, M. E. Beddo, C. N. Brown, T. A. Carey, T. H. Chang, W. E. Cooper, C. A. Gagliardi, G. T. Garvey, D. F. Geesaman, E. A. Hawker, X. C. He, L. D. Isenhower, S. B. Kaufman, D. M. Kaplan, D. D. Koetke, W. M. Lee, M. J. Leitch, P. L. McGaughey, J. M. Moss, B. A. MuellerV. Papavassiliou, J. C. Peng, G. Petitt, P. E. Reimer, M. E. Sadler, P. W. Stankus, W. E. Sondheim, R. S. Towell, M. A. Vasiliev, J. C. Webb, J. L. Willis, G. R. Young

Research output: Contribution to journalArticlepeer-review

Abstract

Fermilab E866 has measured the target-mass dependence of Drell-Yan and J/ψ dimuon production induced by an 800 GeV proton beam on targets of Be, Fe and W. Clear evidence of nuclear shadowing is observed in the Drell-Yan cross section ratios per nucleon at small x2. The x1 dependence of the cross section ratios provides a determination of the energy loss of ultra-relativistic quarks as they pass through cold nuclei. Preliminary results for J/ψ yields show maximum cross section ratios that are slightly less than 1 at an xF value near 0.1. The yield on heavy targets is much more strongly suppressed relative to light targets at larger values of xF.

Original languageEnglish (US)
Pages (from-to)761c-764c
JournalNuclear Physics A
Volume663-664
Issue number1-2
DOIs
StatePublished - Jan 31 2000
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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