Evidence for the rare decay B+ -> D-s(+) pi(0)

B. Aubert, J.Y. Chen, K. Peters, L.L. Zhang, S. Chen, W. Wang, X.H. Li, M.A. Baak, G. Raven, H. Snoek, P. David, H. Schroder, H. Liu, N. van Bakel, A. Wagner, Z. Yu

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We have searched for the rare decay B+→Ds+π0. The analysis is based on a sample of 232×106 Υ(4S)→BB̄ decays collected with the BABAR detector at the SLAC PEP-II e+e- storage ring. We find 19.6 signal events, corresponding to a significance of 4.7σ. The extracted signal yield including statistical and systematic uncertainties is 20.1-6.0-1.5+6.8+0. 4, and we measure B(B+→Ds+π0)=(1.5-0.4+0.5±0.1±0.2) ×10-5, where the first uncertainty is statistical, the second is systematic, and the last is due to the uncertainty on the Ds+ decay and its daughter decay branching fractions. © 2007 The American Physical Society.
Original languageEnglish
JournalPhysical Review Letters
Issue number17
Publication statusPublished - 2007

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Evidence for the rare decay B+ -> D-s(+) pi(0)


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