We report the first observation of a number of decay modes of the B meson, namely B0 → D*- (5π)+, B + → D*-(4π)++, and B+ → D̄*0(5π)+, where (nπ) implies the combination of n charged pions. The analysis is based on a 140 fb-1 data sample collected at the Y(4S) resonance with the Belle detector at KEKB: We measure B[B0 → D*-(5π)+] = (4.72 ± 0.59 ± 0.71) × 10-3, B[B+ → D*-(4μ)++] = (2.56 ± 0.26 ± 0.33) × 10-3, and B[B+ → D̄* 0(5π)+] = (5.67 ± 0.91 ± 0.85) × 10-3. We also provide improved measurements of the branching fractions for the decay modes B0 → D*-(3π) +, B+ → D̄*0°(3π) +, and B0 → D̄*0(4π) 0.
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|Publication status||Published - 2004 Dec|
Bibliographical noteFunding Information:
We thank the KEKB group for the excellent operation of the accelerator, the KEK Cryogenics group for the efficient operation of the solenoid, and the KEK computer group and the NII for valuable computing and Super-SINET network support. We acknowledge support from MEXT and JSPS (Japan), ARC and DEST (Australia), NSFC (Contract No. 10175071, China), DST (India), the BK21 program of MOEHRD and the CHEP SRC program of KOSEF (Korea), KBN (Contract No. 2P03B 01324, Poland), MIST (Russia), MESS (Slovenia), Swiss NSF, NSC and MOE (Taiwan), and DOE (USA).
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)