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Phys. Rev. Lett. 68, 3403–3407 (1992)

Measurement of the B-meson and b-quark cross sections at √s =1.8 TeV using the exclusive decay B±JK±

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F. Abe et al.
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Received 28 January 1992; published in the issue dated 8 June 1992

This letter reports the full reconstruction of B mesons through the decay chain B±JK±, J/ψ→μ+μ-, 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 σ=2.8±0.9 (stat) ±1.1(syst) μb for B- mesons with PT>9.0 GeV/c and rapidity ‖y‖<1.0. We obtain σ=6.1±1.9(stat) ±2.4(syst) μb, for b quarks with transverse momentum PT>11.5 GeV/c and rapidity ‖y‖<1.0.

© 1992 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.68.3403
DOI:
10.1103/PhysRevLett.68.3403
PACS:
13.85.Ni, 13.25.+m, 14.40.Jz, 14.80.Dq