2006年3月
Measurement of branching fractions for B -> X c1(2) K (K*) at Belle
PHYSICS LETTERS B
- 巻
- 634
- 号
- 2-3
- 開始ページ
- 155
- 終了ページ
- 164
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1016/j.physletb.2006.01.013
- 出版者・発行元
- ELSEVIER SCIENCE BV
We have measured the branching fractions for the exclusive decay modes B -> chi(c1(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+ -> chi(c1) K+, B-0, chi(c1) K-0, B-0 -> chi(c1) K*(0) and B+ -> chi(c1) K*(+) decay modes are (4.5 +/- 0.2 +/- 0.5) x 10(-4), (3.5 +/- 0.3 +/- 0.5) x 10(-4), (3.1 +/- 0.3 +/- 0.7) x 10(-4) and (4.1 +/- 0.6 +/- 0.9) x 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 -> chi(c2) K(K*) decay modes and set upper limits at the 90% confidence level. We also study the helicity distribution for B -> chi(c1) K* decay mode and show that the longitudinal polarization component is dominant. (c) 2006 Elsevier B.V. All rights reserved.
- リンク情報
- ID情報
-
- DOI : 10.1016/j.physletb.2006.01.013
- ISSN : 0370-2693
- eISSN : 1873-2445
- CiNii Articles ID : 80019334752
- Web of Science ID : WOS:000235859800012