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Measurement of charmless B decays to ηk* and ηρ

  • C. H. Wang
  • , K. Abe
  • , I. Adachi
  • , H. Aihara
  • , D. Anipko
  • , T. Aushev
  • , A. M. Bakich
  • , E. Barberio
  • , A. Bay
  • , K. Belous
  • , U. Bitenc
  • , S. Blyth
  • , A. Bondar
  • , A. Bozek
  • , M. Bračko
  • , P. Chang
  • , Y. Chao
  • , A. Chen
  • , W. T. Chen
  • , B. G. Cheon
  • R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, H. Ha, J. Haba, T. Hara, K. Hayasaka, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, W. S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, P. Kapusta, N. Katayama, H. R. Khan, H. Kichimi, Y. J. Kim, K. Kinoshita, R. Kulasiri, R. Kumar, C. C. Kuo, Y. J. Kwon, G. Leder, M. J. Lee, S. E. Lee, T. Lesiak, S. W. Lin, D. Liventsev, J. MacNaughton, T. Matsumoto, A. Matyja, S. McOnie, H. Miyake, H. Miyata, R. Mizuk, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, O. Schneider, J. Schümann, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, S. Y. Suzuki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, P. Urquijo, Y. Usov, G. Varner, S. Villa, M. Z. Wang, Y. Watanabe, E. Won, Q. L. Xie, A. Yamaguchi, Y. Yamashita, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc
  • National United University Taiwan
  • High Energy Accelerator Research Organization, Tsukuba
  • The University of Tokyo
  • Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Swiss Federal Institute of Technology Lausanne
  • The University of Sydney
  • University of Melbourne
  • Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’
  • Jožef Stefan Institute
  • National Central University
  • Polish Academy of Sciences
  • University of Maribor
  • National Taiwan University
  • Hanyang University
  • Sungkyunkwan University
  • University of Cincinnati
  • Princeton University
  • Tata Institute of Fundamental Research
  • University of Ljubljana
  • Korea University
  • The University of Osaka
  • Nagoya University
  • Tohoku Gakuin University
  • Nara Women's University
  • Institute of Science Tokyo
  • Yonsei University
  • The Graduate University for Advanced Studies
  • Panjab University
  • Austrian Academy of Sciences
  • Seoul National University
  • Tokyo Metropolitan University
  • Niigata University
  • Osaka Metropolitan University
  • Tokyo University of Agriculture and Technology
  • Toho University
  • Kanagawa University
  • Riken BNL Research Center
  • Kyungpook National University
  • Virginia Polytechnic Institute and State University
  • Shinshu University
  • University of Nova Gorica
  • Peking University
  • University of Hawai'i at Mānoa
  • CAS - Institute of High Energy Physics
  • Tohoku University
  • Nippon Dental University
  • University of Science and Technology of China

Research output: Contribution to journalArticlepeer-review

Abstract

We report measurements of branching fractions and CP asymmetries for B→ηK* and B→ηρ decays. These results are obtained from a 414fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure the following branching fractions: B(B0→ηK*0)=(15.2±1.2±1.0) ×10-6 and B(B+→ηK*+)=(19.3-1.9+2.0±1.5)×10-6, where the first error is statistical and the second systematic. We also find a 2.7σ excess in the B+→ηρ+ mode and measure B(B+→ηρ+)=(4.1-1.3+1.4±0.4)×10-6<6.5×10-6 at 90% confidence level. For B0→ηρ0 decays, we determine the upper limit B(B0→ηρ0)<1.9×10-6 at 90% confidence level. The partial rate asymmetries are ACP(ηK*0)=0.17±0.08±0.01, ACP(ηK*+)=0.03±0.10±0.01, and ACP(ηρ+)=-0.04-0. 32+0.34±0.01.

Original languageEnglish
Article number092005
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume75
Issue number9
DOIs
StatePublished - 22 May 2007
Externally publishedYes

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