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Observation of B(0) decay to 2 charmless mesons
Ammar, Raymond G. Ball, S. Baringer, Philip S. Coppage, Don Copty, N. Davis, Robin E. P. Hancock, N. Kelly, M. Kwak, Nowhan Lam, H.
Ammar, Raymond G.
Ball, S.
Baringer, Philip S.
Coppage, Don
Copty, N.
Davis, Robin E. P.
Hancock, N.
Kelly, M.
Kwak, Nowhan
Lam, H.
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Abstract
We report results from a search for the decays B0 --> pi+pi-, B0 --> K+pi-, and B0 --> K+K-. We find 90% confidence level upper limits on the branching fractions, B(pipi) < 2.9 x 10(-5) , B(Kpi) < 2.6 x 10(-5), and B(KK) < 0.7 x 10(-5). While there is no statistically significant signal in the individual modes, the sum of B(pipi) and B(Kpi) exceeds zero with a significance of more than 4 standard deviations, indicating that we have observed charmless hadronic B decays.
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1993-12
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AMERICAN PHYSICAL SOC
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BATTLE, M, ERNST, J, et al. Observation of B(0) decay to 2 charmless mesons. PHYSICAL REVIEW LETTERS. December 1993. 71(240 : 3922-3926