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.

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) [10.1103/PhysRevLett.98.171801].

Evidence for the rare decay B+→Ds+π0

CARPINELLI, Massimo;
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.
Articolo in rivista - Articolo scientifico
Detectors; Statistical methods; Uncertainty analysis; Decay branching fractions; Storage ring; Radioactivity;
English
2007
98
17
171801
none
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) [10.1103/PhysRevLett.98.171801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389669
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