Measurement of the bottom-quark production cross section in 800 GeV/c proton-gold collisions

D. M. Jansen, M. H. Schub, C. S. Mishra, P. M. Ho, C. N. Brown, T. A. Carey, Y. C. Chen, R. Childers, W. E. Cooper, C. W. Darden, G. Gidal, K. N. Gounder, L. D. Isenhower, R. G. Jeppesen, D. M. Kaplan, J. S. Kapustinsky, G. C. Kiang, M. S. Kowitt, D. W. Lane, L. M. LedermanM. J. Leitch, J. W. Lillberg, W. R. Luebke, K. B. Luk, P. L. McGaughey, J. M. Moss, J. C. Peng, R. S. Preston, D. Pripstein, J. Sa, M. E. Sadler, R. Schnathorst, V. Tanikella, P. K. Teng, J. R. Wilson

Research output: Contribution to journalArticlepeer-review


Using a silicon-microstrip detector array to identify secondary vertices, we have observed bJ/+- decays in 800 GeV/c proton-gold interactions. The doubly differential cross section for J/ mesons originating from b-quark decays, assuming linear dependence on nucleon number, is d 2/dxF dpT2=1072819 [pb/(GeV/c)2]/nucleon at xF=0.05 and pT=1GeV/c. This measurement is compared to next-to-leading-order QCD predictions. The integrated b-quark production cross section, obtained by extrapolation over all xF and pT, is (pNbb+X)= nb/nucleon.

Original languageEnglish (US)
Pages (from-to)3118-3121
Number of pages4
JournalPhysical review letters
Issue number16
StatePublished - 1995
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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