We have searched for the rare decay B+→Ds+π0. The analysis is based on a sample of 232×10^6 Υ(4S)→BB̅ 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.
Evidence for the Rare Decay B+→Ds+π0
SIMI, GABRIELE;GAZ A;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2007
Abstract
We have searched for the rare decay B+→Ds+π0. The analysis is based on a sample of 232×10^6 Υ(4S)→BB̅ 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.File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
