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Observation of the decay Bc±→J/ψπ± and measurement of the Bc± mass

par Aaltonen, Timo;De Lentdecker, Gilles ; [et al.]
Référence Physical review letters, 100, 18, 182002
Publication Publié, 2008-05

Article révisé par les pairs

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Résumé :

The Bc± meson is observed through the decay Bc±→J/ ψπ±, in data corresponding to an integrated luminosity of 2.4fb-1 recorded by the Collider Detector at Fermilab II detector at the Fermilab Tevatron. A signal of 108±15 candidates is observed, with a significance that exceeds 8σ. The mass of the Bc± meson is measured to be 6275.6±2.9(stat)±2.5(syst)MeV/c2. © 2008 The American Physical Society.