1. Measurement of the direct CP asymmetry in B � ?xs+d? decays with a lepton tag
- Author
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Pes�ntez, L., Urquijo, P., Dingfelder, J., Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Arinstein, K., Asner, D.M., Aulchenko, V., Aushev, T., Ayad, R., Bahinipati, S., Bakich, A.M., Bansal, V., Barberio, E., Bhardwaj, V., Bhuyan, B., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bra?ko, M., Browder, T.E., ervenkov, D., Chekelian, V., Chen, A., Cheon, B.G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Dole�al, Z., Dr�sal, Z., Drutskoy, A., Dutta, D., Eidelman, S., Farhat, H., Fast, J.E., Ferber, T., Frost, O., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Getzkow, D., Gillard, R., Goh, Y.M., Golob, B., Haba, J., Hasenbusch, J., Hayashii, H., He, X.H., Heller, A., Horiguchi, T., Hou, W.-S., Huschle, M., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, I., Joffe, D., Julius, T., Kang, K.H., Kato, E., Kawasaki, T., Kiesling, C., Kim, D.Y., Kim, J.B., Kim, J.H., Kim, K.T., Kim, M.J., Kim, S.H., Kim, Y.J., Ko, B.R., Kody�, P., Korpar, S., Kri�an, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y.-J., Lange, J.S., Lee, I.S., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Lukin, P., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G.B., Moll, A., Moon, H.K., Nakano, E., Nakao, M., Nanut, T., Natkaniec, Z., Nayak, M., Ng, C., Nisar, N.K., Nishida, S., Ogawa, S., Okuno, S., Olsen, S.L., Oswald, C., Pakhlov, P., Pakhlova, G., Park, C.W., Park, H., Pedlar, T.K., Pestotnik, R., Petri?, M., Piilonen, L.E., Ribe�l, E., Ritter, M., Rostomyan, A., Rozanska, M., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A.J., Senyo, K., Seon, O., Sevior, M.E., Shebalin, V., Shen, C.P., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Sibidanov, A., Simon, F., Sohn, Y.-S., Sokolov, A., Solovieva, E., Stari?, M., Steder, M., Sumiyoshi, T., Tamponi, U., Taniguchi, N., Tatishvili, G., Teramoto, Y., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Usov, Y., Van Hulse, C., Vanhoefer, P., Varner, G., Vinokurova, A., Vorobyev, V., Wagner, M.N., Wang, B., Wang, C.H., Wang, M.-Z., Wang, P., Watanabe, Y., Williams, K.M., Won, E., Yamaoka, J., Yashchenko, S., Yook, Y., Zhang, Z.P., Zhilich, V., Zhulanov, V., and Zupanc, A.
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E+e- collider ,Photons ,The standard model ,CP asymmetries ,Data sample ,Photon energy ,Asymmetric energy ,Belle detectors ,Center of mass ,Atomic physics - Abstract
We report the measurement of the direct CP asymmetry in the radiative B�?Xs+d? decay using a data sample of (772�11)�106 BB� pairs collected at the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The CP asymmetry is measured as a function of the photon energy threshold. For E???2.1GeV, where E?? is the photon energy in the center-of-mass frame, we obtain ACP(B�?Xs+d?)=(2.2�3.9�0.9)%, consistent with the standard model prediction. � 2015 American Physical Society.
- Published
- 2015
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