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Evidence for the exclusive decay Bc±→J/ψπ± and measurement of the mass of the Bc± meson

Abstract:

We report the first evidence for a fully reconstructed decay mode of the Bc± meson in the channel Bc±→J/ψπ±, with J/ψ→μ+μ-. The analysis is based on an integrated luminosity of 360pb-1 in pp̄ collisions at 1.96 TeV center of mass energy collected by the Collider Detector at Fermilab. We observe 14.6±4.6 signal events with a background of 7.1±0.9 events, and a fit to the J/ψπ± mass spectrum yields a Bc± mass of 6285.7±5.3(stat)±1. 2(syst)MeV/c2. The probability of a peak of this magnitude occu...

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Journal:
Physical Review Letters
Volume:
96
Issue:
8
Publication date:
2006-01-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:0403273a-d8e8-4b51-825d-b7d3cd95cfaa
Source identifiers:
172340
Local pid:
pubs:172340
Language:
English

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