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Improved measurements of color-suppressed decays ${\bar{B}}^{0} \to D^{0} π^{0}$ , $D^{0} η$ , $D^{0} ω$ , $D^{* 0} π^{0}$ , $D^{* 0} η$ and $D^{* 0} ω$

S. Blyth²³, K. Abe⁷, K. Abe⁴³, I. Adachi⁷, H. Aihara⁴⁵, D. Anipko¹, V. Aulchenko¹, T. Aushev¹², A. M. Bakich⁴⁰ et al. (Belle Collaboration)

A. M. Bakich⁴⁰, V. Balagura¹², E. Barberio²⁰, A. Bay¹⁷, I. Bedny¹, K. Belous¹¹, U. Bitenc¹³, I. Bizjak¹³, A. Bozek²⁶, M. Bračko^7,19,13, J. Brodzicka²⁶, T. E. Browder⁶, M.-C. Chang⁴⁴, Y. Chao²⁵, A. Chen²³, K.-F. Chen²⁵, W. T. Chen²³, B. G. Cheon³, R. Chistov¹², Y. Choi³⁹, Y. K. Choi³⁹, A. Chuvikov³⁴, S. Cole⁴⁰, J. Dalseno²⁰, M. Dash⁴⁹, A. Drutskoy⁴, S. Eidelman¹, S. Fratina¹³, N. Gabyshev¹, A. Garmash³⁴, T. Gershon⁷, A. Go²³, G. Gokhroo⁴¹, B. Golob^18,13, A. Gorišek¹³, H. Ha¹⁵, J. Haba⁷, T. Hara³¹, K. Hayasaka²¹, H. Hayashii²², M. Hazumi⁷, D. Heffernan³¹, T. Hokuue²¹, Y. Hoshi⁴³, S. Hou²³, W.-S. Hou²⁵, Y. B. Hsiung²⁵, T. Iijima²¹, A. Imoto²², K. Inami²¹, A. Ishikawa⁴⁵, R. Itoh⁷, M. Iwasaki⁴⁵, Y. Iwasaki⁷, J. H. Kang⁵⁰, N. Katayama⁷, H. Kawai², T. Kawasaki²⁸, H. R. Khan⁴⁶, H. Kichimi⁷, H. J. Kim¹⁶, H. O. Kim³⁹, Y. J. Kim⁵, S. Korpar^19,13, P. Križan^18,13, P. Krokovny⁷, R. Kumar³², C. C. Kuo²³, A. Kuzmin¹, Y.-J. Kwon⁵⁰, G. Leder¹⁰, J. Lee³⁸, S.-W. Lin²⁵, D. Liventsev¹², F. Mandl¹⁰, T. Matsumoto⁴⁷, A. Matyja²⁶, S. McOnie⁴⁰, W. Mitaroff¹⁰, K. Miyabayashi²², H. Miyake³¹, H. Miyata²⁸, Y. Miyazaki²¹, R. Mizuk¹², G. R. Moloney²⁰, T. Nagamine⁴⁴, E. Nakano³⁰, M. Nakao⁷, S. Nishida⁷, O. Nitoh⁴⁸, S. Ogawa⁴², T. Ohshima²¹, T. Okabe²¹, S. Okuno¹⁴, S. L. Olsen⁶, Y. Onuki²⁸, W. Ostrowicz²⁶, H. Ozaki⁷, P. Pakhlov¹², G. Pakhlova¹², H. Palka²⁶, H. Park¹⁶, K. S. Park³⁹, R. Pestotnik¹³, L. E. Piilonen⁴⁹, Y. Sakai⁷, T. Schietinger¹⁷, O. Schneider¹⁷, J. Schümann²⁴, C. Schwanda¹⁰, A. J. Schwartz⁴, R. Seidl^8,35, M. Shapkin¹¹, H. Shibuya⁴², B. Shwartz¹, V. Sidorov¹, J. B. Singh³², A. Somov⁴, N. Soni³², S. Stanič²⁹, M. Starič¹³, H. Stoeck⁴⁰, T. Sumiyoshi⁴⁷, S. Suzuki³⁶, F. Takasaki⁷, N. Tamura²⁸, M. Tanaka⁷, G. N. Taylor²⁰, Y. Teramoto³⁰, I. Tikhomirov¹², X. C. Tian³³, K. Trabelsi⁶, T. Tsuboyama⁷, T. Tsukamoto⁷, S. Uehara⁷, T. Uglov¹², K. Ueno²⁵, S. Uno⁷, Y. Usov¹, G. Varner⁶, K. E. Varvell⁴⁰, S. Villa¹⁷, C. C. Wang²⁵, C. H. Wang²⁴, M.-Z. Wang²⁵, Y. Watanabe⁴⁶, E. Won¹⁵, C.-H. Wu²⁵, Q. L. Xie⁹, A. Yamaguchi⁴⁴, Y. Yamashita²⁷, M. Yamauchi⁷, L. M. Zhang³⁷, and Z. P. Zhang³⁷ (Belle Collaboration)

¹Budker Institute of Nuclear Physics, Novosibirsk
²Chiba University, Chiba
³Chonnam National University, Kwangju
⁴University of Cincinnati, Cincinnati, Ohio 45221
⁵The Graduate University for Advanced Studies, Hayama, Japan
⁶University of Hawaii, Honolulu, Hawaii 96822
⁷High Energy Accelerator Research Organization (KEK), Tsukuba
⁸University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
⁹Institute of High Energy Physics, Chinese Academy of Sciences, Beijing
¹⁰Institute of High Energy Physics, Vienna
¹¹Institute of High Energy Physics, Protvino
¹²Institute for Theoretical and Experimental Physics, Moscow
¹³J. Stefan Institute, Ljubljana
¹⁴Kanagawa University, Yokohama
¹⁵Korea University, Seoul
¹⁶Kyungpook National University, Taegu
¹⁷Swiss Federal Institute of Technology of Lausanne, EPFL, Lausanne
¹⁸University of Ljubljana, Ljubljana
¹⁹University of Maribor, Maribor
²⁰University of Melbourne, Victoria
²¹Nagoya University, Nagoya
²²Nara Women’s University, Nara
²³National Central University, Chung-li
²⁴National United University, Miao Li
²⁵Department of Physics, National Taiwan University, Taipei
²⁶H. Niewodniczanski Institute of Nuclear Physics, Krakow
²⁷Nippon Dental University, Niigata
²⁸Niigata University, Niigata
²⁹University of Nova Gorica, Nova Gorica
³⁰Osaka City University, Osaka
³¹Osaka University, Osaka
³²Panjab University, Chandigarh
³³Peking University, Beijing
³⁴Princeton University, Princeton, New Jersey 08544
³⁵RIKEN BNL Research Center, Upton, New York 11973
³⁶Saga University, Saga
³⁷University of Science and Technology of China, Hefei
³⁸Seoul National University, Seoul
³⁹Sungkyunkwan University, Suwon
⁴⁰University of Sydney, Sydney NSW
⁴¹Tata Institute of Fundamental Research, Bombay
⁴²Toho University, Funabashi
⁴³Tohoku Gakuin University, Tagajo
⁴⁴Tohoku University, Sendai
⁴⁵Department of Physics, University of Tokyo, Tokyo
⁴⁶Tokyo Institute of Technology, Tokyo
⁴⁷Tokyo Metropolitan University, Tokyo
⁴⁸Tokyo University of Agriculture and Technology, Tokyo
⁴⁹Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
⁵⁰Yonsei University, Seoul

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Phys. Rev. D 74, 092002 – Published 17 November, 2006

DOI: https://doi.org/10.1103/PhysRevD.74.092002

Abstract

We present improved measurements of the branching fractions of the color-suppressed decays ${\bar{B}}^{0} \to D^{(*) 0} h^{0}$ , where $h^{0}$ represents a light neutral meson $π^{0}$ , $η$ or $ω$ . The measurements are based on a data sample of $140 {fb}^{- 1}$ collected at the $Υ (4 S)$ resonance with the Belle detector at the KEKB energy-asymmetric $e^{+} e^{-}$ collider, corresponding to 7 times the luminosity of the previous Belle measurements. All the measured branching fractions fall in the range $1.4 - 2.4 \times 10^{- 4}$ , which is significantly higher than theoretical predictions based on naive factorization.

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References (23)

Throughout this paper, the inclusion of the charge conjugate mode decay is implied unless otherwise stated.
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Improved measurements of color-suppressed decays ${\bar{B}}^{0} \to D^{0} π^{0}$ , $D^{0} η$ , $D^{0} ω$ , $D^{* 0} π^{0}$ , $D^{* 0} η$ and $D^{* 0} ω$

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Improved measurements of color-suppressed decays B¯0→D0π0, D0η, D0ω, D*0π0, D*0η and D*0ω

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Improved measurements of color-suppressed decays ${\bar{B}}^{0} \to D^{0} π^{0}$ , $D^{0} η$ , $D^{0} ω$ , $D^{* 0} π^{0}$ , $D^{* 0} η$ and $D^{* 0} ω$