Evidence for Isospin Violation and Measurement of CP Asymmetries in B -> K*(892)gamma

  • Horiguchi, T.
  • Ishikawa, A.
  • Yamamoto, H.
  • Adachi, I.
  • Aihara, H.
  • ... Cheon, B. G.
  • 외 187명
Citations

WEB OF SCIENCE

27
Citations

SCOPUS

38

초록

We report the first evidence for isospin violation in B -> K*gamma and the first measurement of the difference of CP asymmetries between B+->.K*(+)gamma and B-0 -> K-*0 gamma. This analysis is based on the data sample containing 772 x 10(6)BB pairs that was collected with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We find evidence for the isospin violation with a significance of 3.1 sigma, Delta(0+) = [+6.2 +/- 1.5(stat) +/- 0.6(syst) +/- 1.2(f (+-)/f(00))] %, where the third uncertainty is due to the uncertainty on the fraction of B+B- to (BB0)-B-0 production in gamma(4S) decays. The measured value is consistent with predictions of the standard model. The result for the difference of CP asymmetries is Delta A(CP) = [+2.4 +/- 2.8(stat) +/- 0.5(syst)] %, consistent with zero. The measured branching fractions and CP asymmetries for charged and neutral B meson decays are the most precise to date. We also calculate the ratio of branching fractions of B-0 -> K-*0 gamma to B-s(0) -> phi gamma.

키워드

K-ASTERISK-GAMMATO-LEADING ORDERDECAYSANNIHILATIONSYMMETRYBREAKING
제목
Evidence for Isospin Violation and Measurement of CP Asymmetries in B -> K*(892)gamma
저자
Horiguchi, T.Ishikawa, A.Yamamoto, H.Adachi, I.Aihara, H.Al Said, S.Asner, D. M.Aulchenko, V.Aushev, T.Ayad, R.Babu, V.Badhrees, I.Bakich, A. M.Bansal, V.Behera, P.Bhardwaj, V.Bhuyan, B.Biswal, J.Bobrov, A.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Cho, K.Choi, Y.Cinabro, D.Czank, T.Dash, N.Di Carlo, S.Dolezal, Z.Drasal, Z.Dutta, D.Eidelman, S.Epifanov, D.Farhat, H.Fast, J. E.Ferber, T.Fulsom, B. G.Gaur, V.Gabyshev, N.Garmash, A.Gelb, M.Gillard, R.Goldenzweig, P.Golob, B.Guan, Y.Guido, E.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hedges, M. T.Higuchi, T.Hirose, S.Hou, W. -S.Iijima, T.Inami, K.Inguglia, G.Itoh, R.Iwasaki, Y.Jacobs, W. W.Jaegle, I.Jeon, H. B.Jia, S.Jin, Y.Joffe, D.Joo, K. K.Julius, T.Kang, K. H.Kawasaki, T.Kim, D. Y.Kim, J. B.Kim, K. T.Kim, M. J.Kim, S. H.Kim, Y. J.Kinoshita, K.Kodys, P.Korpar, S.Kotchetkov, D.Krizan, P.Krokovny, P.Kuhr, T.Kulasiri, R.Kumar, R.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Li, C. H.Li, L.Gioi, L. LiLibby, J.Liventsev, D.Lubej, M.Luo, T.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Mohanty, S.Moon, H. K.Mori, T.Mussa, R.Nakano, E.Nakao, M.Nanut, T.Nath, K. J.Natkaniec, Z.Nayak, M.Nisar, N. K.Nishida, S.Ogawa, S.Okuno, S.Ono, H.Pakhlov, P.Pakhlova, G.Pal, B.Pardi, S.Park, C. -S.Park, H.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Prasanth, K.Pulvermacher, C.Rauch, J.Rostomyan, A.Sakai, Y.Sandilya, S.Santelj, L.Savinov, V.Schneider, O.Schnell, G.Schwanda, C.Schwartz, A. J.Seino, Y.Senyo, K.Seong, I. S.Sevior, M. E.Shebalin, V.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Simon, F.Sokolov, A.Solovieva, E.Staric, M.Strube, J. F.Sumisawa, K.Sumiyoshi, T.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Trabelsi, K.Uchida, M.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Ushiroda, Y.Usov, Y.Van Hulse, C.Varner, G.Vinokurova, A.Vorobyev, V.Vossen, A.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, Y.Watanuki, S.Weber, T.Widmann, E.Won, E.Yamashita, Y.Ye, H.Zhang, Z. P.Zhilich, V.Zhukova, V.Zhulanov, V.Zupanc, A.
DOI
10.1103/PhysRevLett.119.191802
발행일
2017-11
유형
Article
저널명
Physical Review Letters
119
19
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