Measurement of branching fractions for B → χc1(2)K (K*) at Belle

  • N. Soni
  • , K. Abe
  • , K. Abe
  • , I. Adachi
  • , H. Aihara
  • , K. Arinstein
  • , Y. Asano
  • , V. Aulchenko
  • , T. Aushev
  • , A. M. Bakich
  • , E. Barberio
  • , I. Bedny
  • , U. Bitenc
  • , I. Bizjak
  • , S. Blyth
  • , A. Bondar
  • , M. Bračko
  • , T. E. Browder
  • , P. Chang
  • , Y. Chao
  • A. Chen, K. F. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, L. Y. Dong, S. Eidelman, Y. Enari, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, A. Gorišek, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. M. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, C. C. Kuo, A. Kuzmin, Y. J. Kwon, T. Lesiak, S. W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, T. Nagamine, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, C. W. Park, R. Pestotnik, M. Peters, L. E. Piilonen, A. Poluektov, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, P. Urquijo, G. Varner, S. Villa, C. C. Wang, C. H. Wang, Y. Watanabe, E. Won, Q. L. Xie, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, Y. Yuan, C. C. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich

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17 Scopus citations

Abstract

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→χ c1K0, 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.

Original languageEnglish
Pages (from-to)155-164
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume634
Issue number2-3
DOIs
StatePublished - 9 Mar 2006

Keywords

  • B-meson
  • Branching fractions
  • Charmonium
  • Polarization

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