We describe a measurement of the ratio of the cross sections times branching fractions of the B+c meson in the decay mode B+c→J/ψμ+ν to the B+ meson in the decay mode B+→J/ψK+ in proton-antiproton collisions at center-of-mass energy √s=1.96  TeV. The measurement is based on the complete CDF Run II data set, which comes from an integrated luminosity of 8.7  fb−1. The ratio of the production cross sections times branching fractions for B+c and B+ mesons with momentum transverse to the beam greater than 6  GeV/c and rapidity magnitude smaller than 0.6 is 0.211±0.012(stat)+0.021−0.020(syst). Using the known B+→J/ψK+ branching fraction, the known B+ production cross section, and a selection of the predicted B+c→J/ψμ+ν branching fractions, the range for the total B+c production cross section is estimated.

Measurement of the Bc± production cross section in p p collisions at √s=1.96  TeV

CAUZ, Diego;SANTI, Lorenzo Gianni;
2016

Abstract

We describe a measurement of the ratio of the cross sections times branching fractions of the B+c meson in the decay mode B+c→J/ψμ+ν to the B+ meson in the decay mode B+→J/ψK+ in proton-antiproton collisions at center-of-mass energy √s=1.96  TeV. The measurement is based on the complete CDF Run II data set, which comes from an integrated luminosity of 8.7  fb−1. The ratio of the production cross sections times branching fractions for B+c and B+ mesons with momentum transverse to the beam greater than 6  GeV/c and rapidity magnitude smaller than 0.6 is 0.211±0.012(stat)+0.021−0.020(syst). Using the known B+→J/ψK+ branching fraction, the known B+ production cross section, and a selection of the predicted B+c→J/ψμ+ν branching fractions, the range for the total B+c production cross section is estimated.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11390/1084141
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