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| 題名: | Measurement of branching fractions and CP violation parameters in B →ωK decays with first evidence of CP violation in B0 →ω Ks0 |
| 作者: | 陳鎰鋒;Chobanova, V.;Dalseno, J.;Adachi, I.;Aihara, H.;Asner, D. M.;Aulchenko, V.;Aushev, T.;Aziz, T.;Ban, Y.;Belous, K.;Bhuyan, B.;Bobrov, A.;Bračko, M.;Browder, T. E.;Chekelian, V.;Chen, A.;Cheon, B. G.;Choi, Y.;Cinabro, D.;Danilov, M.;Doležal, Z.;Drásal, Z.;Farhat, H.;Fast, J. E.;Gaur, V.;Goh, Y. M.;He, X. H.;Hou, W.-S.;Hyun, H. J.;Inami, K.;Iwashita, T.;Jaegle, I.;Julius, T.;Kang, J. H.;Kato, E.;Kawai, H.;Kim, H. J.;Kim, J. B.;Kim, J. H.;Kim, M. J.;Kim, Y. J.;Kodyš, P.;Krokovny, P.;Kuhr, T.;Kuzmin, A.;Lange, J. S.;Lee, S.-H.;Li, Y.;Gioi, L. Li;Libby, J.;Liventsev, D.;Matvienko, D.;Miyabayashi, K.;Miyata, H.;Mohanty, G. B.;Moll, A.;Nakano, E.;Nayak, M.;Nedelkovska, E.;Ng, C.;Nishida, S.;Ogawa, S.;Okuno, S.;Pakhlov, P.;Park, C. W.;Park, H.;Pedlar, T. K.;Peng, T.;Pestotnik, R.;Petrič, M.;Piilonen, L. E.;Ritter, M.;Röhrken, M.;Sahoo, H.;Savinov, V.;Schneider, O.;Semmler, D.;Sevior, M. E.;Shapkin, M.;Shiu, J.-G.;Shwartz, B.;Simon, F.;Sohn, Y.-S.;Stanič, S.;Sumiyoshi, T.;Tatishvili, G.;Uno, S.;Vanhoefer, P.;Varvell, K. E.;Wagner, M. N.;Wang, C. H.;Wang, P.;Watanabe, Y.;Williams, K. M.;Yamashita, Y.;Yashchenko, S.;Zhang, Z. P.;Zhilich, V.;Zhulanov, V.;Zupanc, A. |
| 貢獻者: | 理學院物理學系 |
| 日期: | 2014-07-09 |
| 上傳時間: | 2026-04-23 12:09:21 (UTC+8) |
| 出版者: | American Physical Society;American Physical Society (APS) |
| 摘要: | 摘要： We present a measurement of the branching fractions and charge- parity-( CP-) violating parameters in B..K decays. The results are obtained from the final data sample containing 772 x 10(6) BB _ pairs collected at the.d4S_ resonance with the Belle detector at the KEKB asymmetric- energy e_e- collider. We obtain the branching fractions BdB0 0 _d4.5 0.4dstat_ 0.3dsyst_x10- 6; BdB_..K__ d6.80.4dstat_ 0.4dsyst__x10- 6 which are in agreement with their respective current world averages. For the CP- violating parameters, we obtain A.K0 S - 0.36 +/- 0.19dstat_ 0.05dsyst_; S.K0 S _0.91 0.32dstat_ 0.05dsyst_; A.K_ - 0.03 +/- 0.04dstat_ 0.01dsyst_; where A and S represent the direct and mixing- induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B_..K_; however, we obtain the first evidence of CP violation in the B0..K0 S decay channel at the level of 3.1 standard deviations.
出版者： American Physical Society (APS)
出版日期： 2014-07-09
出處： Physical Review D, 2014-07, Vol.90 (1)
識別號： ISSN: 1550-7998
識別號： DOI: 10.1103/physrevd.90.012002 |
| 顯示於類別: | [物理學系] 期刊論文
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