Measurement of branching fractions, isospin, and CP-violating asymmetries for exclusive b -> d gamma modes

  • Taniguchi, N.
  • Nakao, M.
  • Nishida, S.
  • Adachi, I.
  • Aihara, H.
  • ... Cheon, Byung Gu
  • 외 147명
Citations

WEB OF SCIENCE

26
Citations

SCOPUS

43

초록

We report new measurements of the decays B+-> rho(+)gamma, B-0 -> rho(0)gamma, and B-0 -> omega gamma using a data sample of 657 x 10(6) B meson pairs accumulated with the Belle detector at the KEKB e(+) e(-) collider. We measure branching fractions B(B+ -> rho(+)gamma) = (8.7(-2.7-1.1)(+2.9+0.9)) x 10(-7), B(B-0 -> rho(0)gamma) = (7.8(-1.6-1.0)(+1.7+0.9)) x 10(-7), and B(B-0 -> omega gamma) = (4.0(-1.7)(+1.9)+/- 1.3) x 10(-7). We also report the isospin asymmetry Delta(rho gamma) = -0.48(-0.19-0.09)(+0.21+0.08) and the first measurement of the direct CP-violating asymmetry A(CP)(B+ -> rho(+)gamma) = -0.11 +/- 0.32 +/- 0.09, where the first and second errors are statistical and systematic, respectively.

키워드

TO-LEADING ORDERQCD SUM-RULERADIATIVE DECAYSBELLE
제목
Measurement of branching fractions, isospin, and CP-violating asymmetries for exclusive b -> d gamma modes
저자
Taniguchi, N.Nakao, M.Nishida, S.Adachi, I.Aihara, H.Arinstein, K.Aushev, T.Aziz, T.Bakich, A. M.Balagura, V.Bay, A.Belous, K.Bhardwaj, V.Bitenc, U.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Chang, M. -C.Chang, P.Chao, Y.Chen, A.Chen, K. -F.Chen, W. T.Cheon, Byung GuChiang, C. -C.Cho, I. -S.Choi, Y.Dalseno, J.Dash, M.Drutskoy, A.Dungel, W.Eidelman, S.Golob, B.Ha, H.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hazumi, M.Hoshi, Y.Hou, W. -S.Hyun, H. J.Iijima, T.Inami, K.Ishikawa, A.Ishino, H.Itoh, R.Iwabuchi, M.Iwasaki, M.Iwasaki, Y.Joshi, N. J.Kah, D. H.Kaji, H.Kang, J. H.Kawai, H.Kawasaki, T.Kichimi, H.Kim, S. K.Kim, Y. I.Kim, Y. J.Kinoshita, K.Korpar, S.Krizan, P.Krokovny, P.Kumar, R.Kuzmin, A.Kwon, Y. -J.Kyeong, S. -H.Lange, J. S.Lee, J. S.Lee, S. E.Lesiak, T.Limosani, A.Lin, S. -W.Liu, C.Liu, Y.Liventsev, D.Mandl, F.McOnie, S.Miyabayashi, K.Miyazaki, Y.Moloney, G. R.Nagasaka, Y.Nakamura, I.Nakano, E.Nakazawa, H.Natkaniec, Z.Nitoh, O.Nozaki, T.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Ozaki, H.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Park, K. S.Peak, L. S.Piilonen, L. E.Sahoo, H.Sakai, Y.Sasao, N.Schneider, O.Schuemann, J.Schwanda, C.Schwartz, A. J.Seidl, R.Senyo, K.Sevior, M. E.Shapkin, M.Shen, C. P.Shiu, J. -G.Shwartz, B.Singh, J. B.Sokolov, A.Stanic, S.Staric, M.Sumisawa, K.Sumiyoshi, T.Suzuki, S. Y.Tamura, N.Taylor, G. N.Teramoto, Y.Tikhomirov, I.Trabelsi, K.Tsuboyama, T.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Varner, G.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Watanabe, Y.Wedd, R.Wicht, J.Won, E.Yabsley, B. D.Yamashita, Y.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Zivko, T.Zupanc, A.Zyukova, O.
DOI
10.1103/PhysRevLett.101.111801
발행일
2008-09
유형
Article
저널명
Physical Review Letters
101
11
페이지
1 ~ 6

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