Measurement of the Bottom-Quark Production Cross-Section in 800-Gev/C Proton-Gold Collisions
Journal
Physical Review Letters
Journal Volume
74
Journal Issue
16
Pages
3118-3121
Date Issued
1995
Author(s)
Jansen, Dm
Schub, Mh
Mishra, Cs
Brown, Cn
Carey, Ta
Chen, Yc
Childers, R.
Cooper, We
Darden, Cw
Gidal, G.
Gounder, Kn
Isenhower, Ld
Jeppesen, Rg
Kaplan, Dm
Kapustinsky, Js
Kiang, Gc
Kowitt, Ms
Lane, Dw
Lederman, Lm
Leitch, Mj
Lillberg, Jm
Luebke, Wr
Luk, Kb
Mcgaughey, Pl
Moss, Jm
Peng, Jc
Preston, Rs
Pripstein, D.
Sa, J.
Sadler, Me
Schnathorst, R.
Tanikella, V.
Teng, Pk
Wilson, Jr
Abstract
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)=5.71.51.3 nb/nucleon. © 1995 The American Physical Society.
Type
journal article