D over u asymmetry in a proton and Drell-Yan processes

W. Y.P. Hwang, G. T. Garvey, J. M. Moss, J. C. Peng

Research output: Contribution to journalArticle


We investigate the extent to which Drell-Yan processes may be used to shed light on the d over u asymmetry in a proton, as implied by the recent finding of the New Muon Collaboration. To this end, we consider the Drell-Yan production experiment either with an 800 GeV proton beam or with a 200 GeV or K beam, readily feasible at Fermilab (as a fixed target experiment). Numerical results indicate that the measurement of the pN (proton-to-nucleon, i.e., normalized proton-to-deuteron) Drell-Yan production cross-section ratio is a suitable choice for unraveling the d over u asymmetry in a proton. The results also suggest that an experiment with a 200 GeV - or K- beam is not suitable for this particular purpose although the calculated ratio differs significantly from unity.

Original languageEnglish (US)
Pages (from-to)2697-2702
Number of pages6
JournalPhysical Review D
Issue number7
StatePublished - Jan 1 1993
Externally publishedYes


ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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