Journal article
Search for B →D* π0 decay
M Iwabuchi, M Nakao, I Adachi, K Arinstein, V Aulchenko, T Aushev, AM Bakich, V Balagura, E Barberio, A Bay, K Belous, V Bhardwaj, U Bitenc, A Bozek, M Bračko, TE Browder, A Chen, WT Chen, BG Cheon, IS Cho Show all
Physical Review Letters | AMER PHYSICAL SOC | Published : 2008
Abstract
We report on a search for the doubly Cabibbo suppressed decay B+→D*+π0, based on a data sample of 657×106 BB̄ pairs collected at the Υ(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 B(B+→D*+π0)<3.6×10-6 at the 90% confidence level. This limit can be used to constrain the ratio between suppressed and favored B→D*π decay amplitudes, r<0.051, at the 90% confidence level. © 2008 The American Physical Society.
Grants
Funding Acknowledgements
We thank the KEKB group for excellent operation of the accelerator, the KEK cryogenics group for efficient solenoid operations, and the KEK computer group and the NII for valuable computing and SINET3 network support. We acknowledge support from MEXT and JSPS (Japan); ARC and DEST (Australia); NSFC (China); DST (India); MOEHRD, KOSEF and KRF (Korea); KBN (Poland); MES and RFAAE (Russia); ARRS (Slovenia); SNSF (Switzerland); NSC and MOE (Taiwan); and DOE (USA).