Measurement of the B-meson and b-quark cross sections at √s =1.8 TeV using the exclusive decay B±→J/ψ K±
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This letter reports the full reconstruction of B mesons through the decay chain BJ/ K, J/+-, using data obtained at the Collider Detector at Fermilab in p»p collisions at s =1.8 TeV. This exclusive sample, the first observed at a hadron collider, is then used to measure the B-meson cross section, from which we extract the b-quark cross section. We obtain =2.80.9 (stat) 1.1(syst) b for B- mesons with PT>9.0 GeV/c and rapidity y<1.0. We obtain =6.11.9(stat) 2.4(syst) b, for b quarks with transverse momentum PT>11.5 GeV/c and rapidity ylt;1.0. © 1992 The American Physical Society.
author list (cited authors)
Abe, F., Amidei, D., Apollinari, G., Atac, M., Auchincloss, P., Baden, A. R., ... Zucchelli, S.