F. Abe et al., MEASUREMENT OF THE B-MESON B-QUARK CROSS-SECTIONS AT ROOT-S=1.8 TEV USING THE EXCLUSIVE DECAY B(0)-]J PSI-K-ASTERISK(892)0/, Physical review. D. Particles and fields, 50(7), 1994, pp. 4252-4257
This paper reports the measurement of the B meson and b quark cross se
ctions through the decay chain B0 --> J/psi K (892)0, J/psi --> mu+ m
u-, K (892)0 --> K+ pi-, using 4.3 pb-1 of data collected at the Coll
ider Detector at Fermilab in pBARp collisions at square-root s = 1.8 T
eV. We obtain sigma(B) = 1.5 +/- 0.7(stat)+/-0.6(syst) mub for B0 meso
ns with transverse momentum P(T) > 9.0 GeV/c and rapidity \y\ < 1.0. U
sing this results, we find sigma(b) = 3.7 +/- 1.6(stat)+/-1.5(syst) mu
b for b quarks with P(T) > 11.5 GeV/c and rapidity \y\ < 1.0. The b qu
ark cross section is compared to next-to-leading order QCD calculation
s and previous measurements.