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


CDF Collaboration; et al; Canelli, F; Kilminster, B (2016). Measurement of the Bc± production cross section in pp ̄ collisions at √s = 1.96 TeV. Physical review. D:052001.

Abstract

We describe a measurement of the ratio of the cross sections times branching fractions of the Bc+ meson in the decay mode Bc+→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 Bc+ 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)-0.020+0.021(syst). Using the known B+→J/ψK+ branching fraction, the known B+ production cross section, and a selection of the predicted Bc+→J/ψμ+ν branching fractions, the range for the total Bc+ production cross section is estimated.

Abstract

We describe a measurement of the ratio of the cross sections times branching fractions of the Bc+ meson in the decay mode Bc+→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 Bc+ 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)-0.020+0.021(syst). Using the known B+→J/ψK+ branching fraction, the known B+ production cross section, and a selection of the predicted Bc+→J/ψμ+ν branching fractions, the range for the total Bc+ production cross section is estimated.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2016
Deposited On:03 Jan 2017 08:58
Last Modified:08 Mar 2017 10:39
Publisher:American Physical Society
ISSN:2470-0010
Publisher DOI:https://doi.org/10.1103/PhysRevD.84.011103

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