Measurements of branching fractions for b -> K pi and b ->pi pi decays

  • Lin, S.-W.
  • Chang, P.
  • Abe, K.
  • Abe, K.
  • Adachi, I.
  • ... Cheon, Byung Gu
  • 외 151명
Citations

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Citations

SCOPUS

33

초록

We report measurements of branching fractions for B -> K pi and B ->pi pi decays based on a data sample of 449x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We also measure the ratios of partial widths for B -> K pi decays, namely R-c equivalent to 2 Gamma(B+-> K+pi(0))/Gamma(B+-> K-0 pi(+))=1.08 +/- 0.06 +/- 0.08 and R-n equivalent to Gamma(B-0 -> K+pi(-))/2 Gamma(B-0 -> K-0 pi(0))=1.08 +/- 0.08 +/- 0.08, where the first and the second errors are statistical and systematic, respectively. These ratios are sensitive to enhanced electroweak penguin contributions from new physics; the new measurements are, however, consistent with standard model expectations.

키워드

MONTE-CARLOPI-KPHOTOS
제목
Measurements of branching fractions for b -> K pi and b ->pi pi decays
저자
Lin, S.-W.Chang, P.Abe, K.Abe, K.Adachi, I.Aihara, H.Anipko, D.Aulchenko, V.Aushev, T.Bahinipati, S.Bakich, A. M.Barberio, E.Bedny, I.Bitenc, U.Bizjak, I.Blyth, S.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Chang, M.-C.Chao, Y.Chen, A.Chen, K.-F.Chen, W. T.Cheon, Byung GuChistov, R.Choi, S.-K.Choi, Y.Choi, Y. K.Dalseno, J.Dash, M.Dragic, J.Drutskoy, A.Eidelman, S.Fratina, S.Gabyshev, N.Garmash, A.Go, A.Golob, B.Ha, H.Haba, J.Hara, T.Hayashii, H.Hazumi, M.Heffernan, D.Hokuue, T.Hoshi, Y.Hou, W.-S.Hsiung, Y. B.Iijima, T.Ikado, K.Imoto, A.Inami, K.Ishikawa, A.Ishino, H.Itoh, R.Iwasaki, M.Iwasaki, Y.Kaji, H.Kapusta, P.Kataoka, S. U.Kawai, H.Kawasaki, T.Kichimi, H.Kim, Y. J.Kinoshita, K.Korpar, S.Krizan, P.Krokovny, P.Kulasiri, R.Kumar, R.Kuzmin, A.Kwon, Y.-J.Lee, M. J.Lesiak, T.Liventsev, D.MacNaughton, J.Mandl, F.Matsumoto, T.McOnie, S.Medvedeva, T.Mitaroff, W.Miyake, H.Miyata, H.Miyazaki, Y.Moloney, G. R.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Nishida, S.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Onuki, Y.Ozaki, H.Pakhlov, P.Pakhlova, G.Park, C. W.Pestotnik, R.Piilonen, L. E.Sahoo, H.Sakai, Y.Satoyama, N.Schietinger, T.Schneider, O.Schuemann, J.Schwartz, A. J.Senyo, K.Sevior, M. E.Shapkin, M.Shibuya, H.Shwartz, B.Singh, J. B.Somov, A.Soni, N.Stanic, S.Staric, M.Stoeck, H.Sumisawa, K.Sumiyoshi, T.Suzuki, S.Suzuki, S. Y.Takasaki, F.Tamai, K.Tanaka, M.Taylor, G. N.Teramoto, Y.Tian, X. C.Tikhomirov, I.Tsukamoto, T.Uehara, S.Ueno, K.Unno, Y.Uno, S.Ushiroda, Y.Varner, G.Varvell, K. E.Villa, S.Wang, C. C.Wang, C. H.Wang, M.-Z.Watanabe, Y.Wicht, J.Won, E.Xie, Q. L.Yabsley, B. D.Yamaguchi, A.Yamashita, Y.Yamauchi, M.Yusa, Y.Zhang, C. C.Zhang, Z. P.Zupanc, A.
DOI
10.1103/PhysRevLett.99.121601
발행일
2007-09
유형
Article
저널명
Physical Review Letters
99
12
페이지
1 ~ 5

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