This paper reports the measurement of the B meson and b quark cross sections through the decay chain B0 --> J/psi K* (892)0, J/psi --> mu+ mu-, K* (892)0 --> K+ pi-, using 4.3 pb-1 of data collected at the Collider Detector at Fermilab in pBARp collisions at square-root s = 1.8 TeV. We obtain sigma(B) = 1.5 +/- 0.7(stat)+/-0.6(syst) mub for B0 mesons with transverse momentum P(T) > 9.0 GeV/c and rapidity \y\ < 1.0. Using this results, we find sigma(b) = 3.7 +/- 1.6(stat)+/-1.5(syst) mub for b quarks with P(T) > 11.5 GeV/c and rapidity \y\ < 1.0. The b quark cross section is compared to next-to-leading order QCD calculations and previous measurements.

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

BISELLO, DARIO;BUSETTO, GIOVANNI;LUCCHESI, DONATELLA;MARIOTTI, MOSE';
1994

Abstract

This paper reports the measurement of the B meson and b quark cross sections through the decay chain B0 --> J/psi K* (892)0, J/psi --> mu+ mu-, K* (892)0 --> K+ pi-, using 4.3 pb-1 of data collected at the Collider Detector at Fermilab in pBARp collisions at square-root s = 1.8 TeV. We obtain sigma(B) = 1.5 +/- 0.7(stat)+/-0.6(syst) mub for B0 mesons with transverse momentum P(T) > 9.0 GeV/c and rapidity \y\ < 1.0. Using this results, we find sigma(b) = 3.7 +/- 1.6(stat)+/-1.5(syst) mub for b quarks with P(T) > 11.5 GeV/c and rapidity \y\ < 1.0. The b quark cross section is compared to next-to-leading order QCD calculations and previous measurements.
1994
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2518623
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