Measurement of branching fractions for B ---> chi(c1(2)) K (K*) at BELLE
Aug, 200519 pages
Published in:
- Phys.Lett.B 634 (2006) 155-164
e-Print:
- hep-ex/0508032 [hep-ex]
Report number:
- KEK-PREPRINT-2005-50,
- BELLE-PREPRINT-2005-27
Experiments:
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Abstract: (Elsevier)
We have measured the branching fractions for the exclusive decay modes B→χc1(2)K(K∗) using a 140 fb−1 data sample collected by the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured branching fractions for B+→χc1K+ , B0→χc1K0 , B0→χc1K∗0 and B+→χc1K∗+ decay modes are (4.5±0.2±0.5)×10−4 , (3.5±0.3±0.5)×10−4 , (3.1±0.3±0.7)×10−4 and (4.1±0.6±0.9)×10−4 , respectively, where the first error is statistical and the second error is systematic. We do not observe statistically significant signals for the B→χc2K(K∗) decay modes and set upper limits at the 90% confidence level. We also study the helicity distribution for B→χc1K∗ decay mode and show that the longitudinal polarization component is dominant.- 11.30.Er
- 13.25.Hw
- B-meson
- Charmonium
- Branching fractions
- Polarization
- B -meson
- electron positron: colliding beams
- electron positron: annihilation
- Upsilon(10570): electroproduction
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