Search for B+ -> D*+ pi0 decay

Details Search for B+ -> D*+ pi0 decay Search for B+ -> D*+ pi0 decay

2008-04-05

arxiv.org/abs/0804.0831v2

Phys.Rev.Lett.101:041601,2008

Physics

High Energy Physics

High Energy Physics - Experiment

5pages, 2figures, submitted to PRL (v1); PRL published version (v2: minor corrections in the text)

Scientific paper

10.1103/PhysRevLett.101.041601

We report on a search for the doubly Cabibbo suppressed decay B+ -> D*+ pi0, based on a data sample of 657 million BBbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e+ e- collider. We find no significant signal and set an upper limit of Br(B+ -> D*+ pi0) < 3.6 x 10^-6 at the 90% confidence level. This limit can be used to constrain the ratio between suppressed and favored B -> D* pi decay amplitudes, r < 0.051, at the 90% confidence level.

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