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Determination of |V| using the semileptonic decay →De

2002; Elsevier BV; Volume: 526; Issue: 3-4 Linguagem: Inglês

10.1016/s0370-2693(01)01476-9

1873-2445

K. Abe, K. Abe, R. Abe, K. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, K. F. Chen, T. Aushev, A. M. Bakich, Y. Ban, E. Banaś, S. Behari, P. K. Behera, A. Bondar, A. Bożek, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, C.W. Everton, F. Fang, H. Fujii, C. C. Kuo, M. Fukushima, N. Gabyshev, A. Garmash, T. Gershon, A. Gordon, R. Guo, J. Haba, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E.M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S. Hou, W.-S. Hou, S.-C. Hsu, Hsuan‐Cheng Huang, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. J. Jackson, P. Jałocha, Hyejin Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D.W. Kim, Heejong Kim, H.J. Kim, H.O. Kim, Hyunwoo Kim, S.K. Kim, T.H. Kim, K. Kinoshita, H. Konishi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, Sanjeev Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S.H. Lee, D. Liventsev, R.-S. Lu, J. MacNaughton, T. Matsubara, S. Matsumoto, T. Matsumoto, Y. Mikami, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, Shigeki Mori, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Pałka, C.S. Park, C.W. Park, H. Park, K.S. Park, L.S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, E. Prebys, J. L. Rodriguez, N. Root, M. Różańska, J. Ryuko, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, S. Schrenk, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, J. B. Singh, S. Stanič, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, Y. Tanaka, G. N. Taylor, Y. Teramoto, M. Tomoto, T. Tomura, S.N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, S. Vahsen, K. E. Varvell, C.C. Wang, C.H. Wang, J.G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. Yabsley, Y. Yamada, M. Yamaga⋆, Akinobu Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, S. Yanaka, J. Yashima, M. Yokoyama, K. Yoshida, Y. Yuan, Y. Yusa, C.C. Zhang, J. Zhang, H. W. Zhao, Y. Zheng, V. Zhilich, D. Žontar,

Particle Accelerators and Free-Electron Lasers

We present a measurement of the Cabibbo–Kobayashi–Maskawa (CKM) matrix element |Vcb| using a 10.2 fb−1 data sample recorded at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric e+e− storage ring. By extrapolating the differential decay width of the B̄0→D∗+e−ν̄ decay to the kinematic limit at which the D∗+ is at rest with respect to the B̄0, we extract the product of |Vcb| with the normalization of the decay form factor F(1), |Vcb|F(1)=(3.54±0.19±0.18)×10−2, where the first error is statistical and the second is systematic. A value of |Vcb|=(3.88±0.21±0.20±0.19)×10−2 is obtained using a theoretical calculation of F(1), where the third error is due to the theoretical uncertainty in the value of F(1). The branching fraction B(B̄0→D∗+e−ν̄) is measured to be (4.59±0.23±0.40)×10−2.