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.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Evidence for the rare decay B+→Ds+π0. PHYSICAL REVIEW LETTERS, 98(17), 1-7 [10.1103/PhysRevLett.98.171801].

Evidence for the rare decay B+→Ds+π0

PATRIGNANI, CLAUDIA;
2007

Abstract

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.
2007
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Evidence for the rare decay B+→Ds+π0. PHYSICAL REVIEW LETTERS, 98(17), 1-7 [10.1103/PhysRevLett.98.171801].
Aubert, B; Bona, M.; Boutigny, D.; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prudent, X.; Tisserand, V.; Zghiche, A.; Grauges, E.; Palano, A.; Chen, J....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/550611
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