Author: "V, Aulchenko" - Searchworks@Jio Institute Digital Library Search Results

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376 results on '"V, Aulchenko"'

151. Observation of B+ --plambdagamma

Author: Y-J, Lee, M-Z, Wang, K, Abe, H, Aihara, Y, Asano, V, Aulchenko, T, Aushev, S, Bahinipati, A M, Bakich, I, Bedny, U, Bitenc, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, M-C, Chang, P, Chang, Y, Chao, A, Chen, K-F, Chen, W T, Chen, B G, Cheon, R, Chistov, S-K, Choi, A, Chuvikov, S, Cole, J, Dalseno, M, Danilov, M, Dash, A, Drutskoy, S, Eidelman, Y, Enari, F, Fang, S, Fratina, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, B, Golob, A, Gorisek, J, Haba, K, Hayasaka, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, S, Hou, W-S, Hou, Y B, Hsiung, T, Iijima, A, Imoto, K, Inami, A, Ishikawa, R, Itoh, M, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, T, Kawasaki, H R, Khan, H, Kichimi, H J, Kim, S K, Kim, S M, Kim, K, Kinoshita, S, Korpar, P, Krizan, P, Krokovny, S, Kumar, C C, Kuo, A, Kuzmin, Y-J, Kwon, G, Leder, S E, Lee, T, Lesiak, J, Li, S-W, Lin, D, Liventsev, F, Mandl, T, Matsumoto, A, Matyja, W, Mitaroff, H, Miyake, H, Miyata, R, Mizuk, G R, Moloney, T, Nagamine, Y, Nagasaka, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, S, Ogawa, T, Ohshima, T, Okabe, S L, Olsen, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, N, Parslow, L S, Peak, R, Pestotnik, L E, Piilonen, N, Root, M, Rozanska, H, Sagawa, Y, Sakai, N, Sato, T, Schietinger, O, Schneider, J, Schümann, K, Senyo, M E, Sevior, T, Shibata, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, A, Somov, R, Stamen, S, Stanic, M, Staric, K, Sumisawa, T, Sumiyoshi, O, Tajima, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, Y, Teramoto, X C, Tian, T, Tsukamoto, S, Uehara, T, Uglov, K, Ueno, S, Uno, P, Urquijo, G, Varner, K E, Varvell, S, Villa, C C, Wang, C H, Wang, M, Watanabe, Q L, Xie, A, Yamaguchi, Y, Yamashita, M, Yamauchi, Heyoung, Yang, J, Ying, C C, Zhang, L M, Zhang, Z P, Zhang, V, Zhilich, D, Zontar, and D, Zürcher
Abstract: We report the first observation of the radiative hyperonic B decay B+ --plambdagamma, using a 140 fb(-1) data sample recorded on upsilom(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider. The measured branching fraction is [symbol: see text](B+ --plambdagamma) = (2.16(+0.58)(-0.53) +/- 0.20) x 10(-6). We examine its M(plambda) distribution and observe a peak near threshold. This feature is expected by the short-distance b --sgamma transition. A search for B+ --pepsilon0gamma yields no significant signal, and we set a 90% confidence-level upper limit on the branching fraction of [symbol: see textB+ --pepsilon0gamma4.6 x 10(-6).
Published: 2005

152. Measurement of time-dependent CP-violating asymmetries in B0 --K(s)0K(s)0K(s)0 decay

Author: K, Sumisawa, Y, Ushiroda, M, Hazumi, K, Abe, I, Adachi, H, Aihara, Y, Asano, V, Aulchenko, T, Aushev, A M, Bakich, U, Bitenc, I, Bizjak, S, Blyth, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, Y, Chao, A, Chen, K-F, Chen, W T, Chen, B G, Cheon, R, Chistov, Y, Choi, A, Chuvikov, S, Cole, J, Dalseno, M, Danilov, M, Dash, A, Drutskoy, S, Eidelman, Y, Enari, F, Fang, S, Fratina, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, B, Golob, A, Gorisek, J, Haba, K, Hara, T, Hara, H, Hayashii, T, Higuchi, T, Hokuue, Y, Hoshi, S, Hou, W-S, Hou, Y B, Hsiung, T, Iijima, A, Imoto, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, M, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, S U, Kataoka, N, Katayama, H, Kawai, T, Kawasaki, H R, Khan, H, Kichimi, H J, Kim, H O, Kim, S K, Kim, S M, Kim, K, Kinoshita, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, C C, Kuo, A, Kusaka, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, T, Lesiak, S-W, Lin, F, Mandl, D, Marlow, T, Matsumoto, A, Matyja, W, Mitaroff, K, Miyabayashi, H, Miyake, H, Miyata, R, Mizuk, T, Nagamine, Y, Nagasaka, E, Nakano, M, Nakao, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, Y, Onuki, W, Ostrowicz, H, Ozaki, C W, Park, H, Park, N, Parslow, L S, Peak, R, Pestotnik, L E, Piilonen, M, Rozanska, H, Sagawa, Y, Sakai, T R, Sarangi, N, Sato, T, Schietinger, O, Schneider, R, Seuster, M E, Sevior, H, Shibuya, V, Sidorov, J B, Singh, A, Somov, R, Stamen, S, Stanic, M, Staric, T, Sumiyoshi, S, Suzuki, O, Tajima, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, Y, Teramoto, X C, Tian, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, T, Uglov, K, Ueno, S, Uno, P, Urquijo, G, Varner, K E, Varvell, S, Villa, C C, Wang, C H, Wang, M-Z, Wang, Q L, Xie, B D, Yabsley, A, Yamaguchi, H, Yamamoto, Y, Yamashita, M, Yamauchi, Heyoung, Yang, J, Zhang, L M, Zhang, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We present a measurement of CP-violation parameters in the B0 --K(s)0K(s)0K(s)0 decay based on a sample of 275 x 10(6) BB pairs collected at the upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One neutral B meson is fully reconstructed in the decay B0 --K(s)0K(s)0K(s)0, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distributions of the proper-time interval between the two B decays: S = +1.26 +/- 0.68(stat) +/- 0.20(syst) and [symbol: see text] = +0.54 +/- 0.34(stat) +/- 0.09(syst).
Published: 2005

153. Measurement of the time-dependent CP-violating asymmetry in B(0)--K(0)(S)pi(0)gamma decays

Author: Y, Ushiroda, K, Sumisawa, M, Hazumi, K, Abe, I, Adachi, H, Aihara, Y, Asano, V, Aulchenko, T, Aushev, A M, Bakich, A, Bay, I, Bedny, U, Bitenc, I, Bizjak, S, Blyth, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, M-C, Chang, P, Chang, Y, Chao, A, Chen, K-F, Chen, W T, Chen, B G, Cheon, S-K, Choi, Y, Choi, A, Chuvikov, S, Cole, J, Dalseno, M, Danilov, M, Dash, J, Dragic, S, Eidelman, F, Fang, S, Fratina, N, Gabyshev, T, Gershon, G, Gokhroo, A, Gorisek, J, Haba, K, Hara, N C, Hastings, K, Hayasaka, H, Hayashii, T, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, S, Hou, W-S, Hou, Y B, Hsiung, T, Iijima, A, Imoto, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, M, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, T, Kawasaki, H R, Khan, H, Kichimi, H J, Kim, S M, Kim, K, Kinoshita, P, Krizan, P, Krokovny, S, Kumar, C C, Kuo, A, Kusaka, A, Kuzmin, Y-J, Kwon, G, Leder, T, Lesiak, J, Li, A, Limosani, S-W, Lin, D, Liventsev, F, Mandl, T, Matsumoto, Y, Mikami, W, Mitaroff, K, Miyabayashi, H, Miyake, H, Miyata, D, Mohapatra, G R, Moloney, T, Nagamine, E, Nakano, M, Nakao, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, H, Palka, C W, Park, N, Parslow, L S, Peak, R, Pestotnik, L E, Piilonen, H, Sagawa, Y, Sakai, N, Sato, T, Schietinger, O, Schneider, A J, Schwartz, K, Senyo, M E, Sevior, T, Shibata, H, Shibuya, J B, Singh, A, Somov, N, Soni, R, Stamen, S, Stanic, M, Staric, T, Sumiyoshi, S, Suzuki, O, Tajima, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, Y, Teramoto, X C, Tian, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, T, Uglov, S, Uno, P, Urquijo, G, Varner, K E, Varvell, S, Villa, C C, Wang, C H, Wang, M, Watanabe, Y, Watanabe, Q L, Xie, A, Yamaguchi, Y, Yamashita, M, Yamauchi, Heyoung, Yang, J, Ying, J, Zhang, L M, Zhang, Z P, Zhang, and D, Zontar
Abstract: We present a new measurement of CP-violation parameters in B(0)--K(0)(S)pi(0)gamma decay based on a sample of 275 x 10(6) BB pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One of the B mesons is fully reconstructed in the B(0)--K(0)(S)pi(0)gamma decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain SK(0)(S)(pi(0)gamma) = -0.58(+0.46)(-0.38)(stat) +/- 0.11(syst) and AK(0)(S)(pi(0)gamma) = +0.03 +/- 0.34(stat) +/- 0.11(syst), for the K(0)(S)pi(0) invariant mass covering the full range up to 1.8 GeV/c2. We also measure the CP-violation parameters for the case B(0)--K(*0)(--K(0)(S)pi(0))gamma and obtain S(K(*0)gamma) = -0.79(+0.63)(-0.50)(stat) +/- 0.10(syst) for A(K(*0)gamma) fixed at 0.
Published: 2005

154. Evidence for B0 --D+ D- and observation of B- --D0D- and B- --D0D*- decays

Author: G, Majumder, K, Abe, I, Adachi, H, Aihara, Y, Asano, V, Aulchenko, T, Aushev, S, Bahinipati, A M, Bakich, S, Banerjee, I, Bedny, U, Bitenc, I, Bizjak, S, Blyth, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, M-C, Chang, P, Chang, Y, Chao, A, Chen, K-F, Chen, W T, Chen, B G, Cheon, R, Chistov, Y, Choi, A, Chuvikov, S, Cole, J, Dalseno, M, Danilov, M, Dash, A, Drutskoy, S, Eidelman, Y, Enari, S, Fratina, N, Gabyshev, T, Gershon, A, Go, G, Gokhroo, B, Golob, A, Gorisek, J, Haba, T, Hara, N C, Hastings, K, Hayasaka, H, Hayashii, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, S, Hou, W-S, Hou, Y B, Hsiung, T, Iijima, A, Imoto, K, Inami, A, Ishikawa, R, Itoh, M, Iwasaki, J H, Kang, J S, Kang, N, Katayama, H, Kawai, T, Kawasaki, H R, Khan, H, Kichimi, H J, Kim, S K, Kim, S M, Kim, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, C C, Kuo, A, Kuzmin, Y-J, Kwon, G, Leder, S E, Lee, T, Lesiak, J, Li, S-W, Lin, D, Liventsev, J, Macnaughton, F, Mandl, T, Matsumoto, A, Matyja, Y, Mikami, W, Mitaroff, K, Miyabayashi, H, Miyake, H, Miyata, R, Mizuk, D, Mohapatra, G R, Moloney, T, Nagamine, Y, Nagasaka, I, Nakamura, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, H, Park, N, Parslow, L S, Peak, R, Pestotnik, L E, Piilonen, M, Rozanska, H, Sagawa, Y, Sakai, N, Sato, T, Schietinger, O, Schneider, P, Schönmeier, J, Schümann, M E, Sevior, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, A, Somov, N, Soni, R, Stamen, S, Stanic, M, Staric, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, O, Tajima, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, G N, Taylor, Y, Teramoto, X C, Tian, T, Tsukamoto, S, Uehara, T, Uglov, K, Ueno, S, Uno, P, Urquijo, G, Varner, K E, Varvell, S, Villa, C C, Wang, C H, Wang, M-Z, Wang, Y, Watanabe, Q L, Xie, A, Yamaguchi, Y, Yamashita, M, Yamauchi, Heyoung, Yang, J, Ying, C C, Zhang, L M, Zhang, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We report evidence for B(0) --D(0)D(-) and the first observation of the decay modes B(-) --D(0)D(-) and B(-) --D(0)D(*-) based on a sample of 152 x 10(6) BB events collected by the Belle detector at KEKB. The branching fractions for B(0) --D(+) D(-), B---D(0)D(-), and B--D(0)D(*-) are found to be (1.91 +/- 0.51 +/- 0.30) x10(-4), (4.83 +/- 0.78 +/- 0.58) x 10(-4), and (4.57 +/- 0.71 +/- 0.56) x 10(-4), respectively. Charge asymmetries in the B---D(0)D(-) and B(-) --D(0)D(*-) channels are consistent with zero.
Published: 2005

155. Study of the suppressed decays B- --[K+pi-](D)K- and B- --[K+pi-]Dpi

Author: M, Saigo, K, Abe, H, Aihara, M, Akatsu, Y, Asano, V, Aulchenko, T, Aushev, S, Bahinipati, A M, Bakich, Y, Ban, S, Banerjee, I, Bedny, U, Bitenc, I, Bizjak, S, Blyth, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, Y, Chao, A, Chen, K-F, Chen, W T, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, A, Chuvikov, S, Cole, J, Dalseno, M, Danilov, M, Dash, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, S, Fratina, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, B, Golob, J, Haba, K, Hayasaka, H, Hayashii, M, Hazumi, T, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, S, Hou, W-S, Hou, Y B, Hsiung, T, Iijima, A, Imoto, K, Inami, A, Ishikawa, R, Itoh, M, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, T, Kawasaki, N, Kent, H R, Khan, H, Kichimi, H J, Kim, S K, Kim, S M, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, C C, Kuo, A, Kuzmin, Y-J, Kwon, G, Leder, S E, Lee, T, Lesiak, J, Li, S-W, Lin, D, Liventsev, J, Macnaughton, G, Majumder, F, Mandl, D, Marlow, T, Matsumoto, A, Matyja, Y, Mikami, W, Mitaroff, H, Miyake, R, Mizuk, D, Mohapatra, T, Mori, Y, Nagasaka, E, Nakano, M, Nakao, Z, Natkaniec, S, Nishida, O, Nitoh, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, H, Palka, H, Park, K S, Park, N, Parslow, L S, Peak, R, Pestotnik, L E, Piilonen, A, Poluektov, F J, Ronga, H, Sagawa, Y, Sakai, N, Sato, T, Schietinger, O, Schneider, P, Schönmeier, J, Schümann, A J, Schwartz, S, Semenov, R, Seuster, M E, Sevior, H, Shibuya, J B, Singh, A, Somov, N, Soni, R, Stamen, S, Stanic, M, Staric, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, O, Tajima, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, Y, Teramoto, X C, Tian, K, Trabelsi, T, Tsukamoto, S, Uehara, T, Uglov, S, Uno, Y, Ushiroda, G, Varner, K E, Varvell, S, Villa, C C, Wang, C H, Wang, M-Z, Wang, M, Watanabe, Y, Watanabe, A, Yamaguchi, H, Yamamoto, Y, Yamashita, M, Yamauchi, Y, Yusa, L M, Zhang, Z P, Zhang, V, Zhilich, D, Zontar, and D, Zürcher
Abstract: We report a study of the suppressed decays B---[K(+)pi(-)](D)K- and B---[K(+)pi(-)](D)pi(-), where [K(+)pi(-)](D) indicates that the K+pi(-) pair originates from a neutral D meson. These decay modes are sensitive to the unitarity triangle angle varphi(3). We use a data sample containing 275 x 10(6) BB pairs recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. The signal for B---[K(+)pi(-)](D)K- is not statistically significant, and we set a limit r(B)0.27 at 90% confidence level, where r(B) is the magnitude of the ratio of amplitudes |A(B---D 0K-)/A(B---D0K-)|. We observe a signal with 6.4sigma statistical significance in the related mode, B---[K(+)pi(-)](D)pi(-).
Published: 2004

156. Observation ofB+→ΛΛ¯K+

Author: Y.-J. Lee, M.-Z. Wang, K. Abe, T. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, Y. Ban, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, R. Guo, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, P. Koppenburg, S. Korpar, P. Krokovny, A. Kuzmin, Y.-J. Kwon, S. H. Lee, T. Lesiak, J. Li, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyata, R. Mizuk, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, N. Parslow, L. E. Piilonen, H. Sagawa, S. Saitoh, Y. Sakai, N. Sato, O. Schneider, J. Schümann, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, V. Sidorov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, S. N. Tovey, T. Tsuboyama, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, Y. Yuan, Y. Yusa, S. L. Zang, C. C. Zhang, J. Zhang, Z. P. Zhang, T. Ziegler, and D. Žontar
Subjects: Physics, KEKB, Branching fraction, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy, Resonance
Abstract: We report the first observation of the charmless hyperonic B decay, B+-->LambdaLambdaK+, using a 140 fb(-1) data sample recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB (e+)(e-) collider. The measured branching fraction is B(B+-->LambdaLambdaK+) = (2.91(+0.90)(-0.70) +/- 0.38) x 10(-6). We also perform a search for the related decay mode B+-->LambdaLambdapi+, but do not find a significant signal. We set a 90% confidence-level upper limit of B(B+-->LambdaLambdapi+) < 2.8 x 10(-6).
Published: 2004

157. Evidence for DirectCPViolation inB0→K+π−Decays

Author: Y. Chao, P. Chang, K. Abe, N. Abe, I. Adachi, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, Y. Ban, M. Barbero, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, M.-C. Chang, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, R. Dowd, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, D. Epifanov, C. W. Everton, F. Fang, J. Flanagan, S. Fratina, H. Fujii, Y. Funakoshi, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, M. Grosse Perdekamp, H. Guler, R. Guo, J. Haba, C. Hagner, F. Handa, K. Hara, T. Hara, N. C. Hastings, K. Hasuko, K. Hayasaka, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S. Hou, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, H. Ikeda, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, K. Itoh, R. Itoh, M. Iwamoto, M. Iwasaki, Y. Iwasaki, R. Kagan, H. Kakuno, T. Kamitani, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, N. Kent, H. R. Khan, A. Kibayashi, H. Kichimi, M. Kikuchi, E. Kikutani, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, T. H. Kim, K. Kinoshita, S. Kobayashi, H. Koiso, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, T. Kubo, R. Kulasiri, S. Kumar, C. C. Kuo, H. Kurashiro, E. Kurihara, A. Kusaka, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. E. Lee, S. H. Lee, Y.-J. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, M. Masuzawa, T. Matsuishi, H. Matsumoto, S. Matsumoto, T. Matsumoto, A. Matyja, S. Michizono, Y. Mikami, T. Mimashi, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, G. R. Moloney, G. F. Moorhead, T. Mori, J. Mueller, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, I. Nakamura, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakayama, H. Nakazawa, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, A. Ogawa, S. Ogawa, Y. Ogawa, K. Ohmi, Y. Ohnishi, T. Ohshima, N. Ohuchi, K. Oide, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, N. Parslow, L. S. Peak, M. Pernicka, J.-P. Perroud, M. Peters, L. E. Piilonen, A. Poluektov, F. J. Ronga, N. Root, M. Rozanska, H. Sagawa, M. Saigo, S. Saitoh, Y. Sakai, H. Sakamoto, H. Sakaue, T. R. Sarangi, M. Satapathy, N. Sato, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, T. Seki, S. Semenov, K. Senyo, Y. Settai, R. Seuster, M. E. Sevior, T. Shibata, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, V. Siegle, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, R. Sugahara, A. Sugi, T. Sugimura, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, S. K. Swain, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, K. Tanabe, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, X. C. Tian, S. Tokuda, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, K. Uchida, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, L. Widhalm, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, H. Yamamoto, N. Yamamoto, S. Yamamoto, T. Yamanaka, Y. Yamashita, M. Yamauchi, Heyoung Yang, P. Yeh, J. Ying, K. Yoshida, M. Yoshida, Y. Yuan, Y. Yusa, H. Yuta, S. L. Zang, C. C. Zhang, J. Zhang, L. M. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, T. Ziegler, D. Žontar, and D. Zürcher
Subjects: Physics, Nuclear physics, Particle physics, KEKB, law, Electron–positron annihilation, General Physics and Astronomy, CP violation, Collider, Mixing (physics), Charged particle, law.invention
Abstract: The evidence for direct charged particles (CP) violation in the decay B0→K+ π- was investigated with 253 fb-1 of data collected with the Belle detector at the KEKB e + e- collider. 275 x 106 BB pairs were used to observe a B→K±π∓ signal with 2140 ±53 events. Mixing induced CP violation in the B sector was established in b → ccs transitions. The result suggests large interference between tree and penguin diagrams and the existence of final state interactions.
Published: 2004

158. Study of double charmonium production ine+e−annihilation ats≈10.6 GeV

Author: K. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, S. Eidelman, V. Eiges, F. Fang, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, R. Guo, J. Haba, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. J. Kim, P. Koppenburg, P. Križan, P. Krokovny, S. Kumar, Y.-J. Kwon, J. S. Lange, G. Leder, T. Lesiak, J. Li, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, R. Mizuk, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, H. Sagawa, Y. Sakai, N. Sato, O. Schneider, J. Schümann, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, V. Sidorov, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, S. L. Zang, C. C. Zhang, J. Zhang, Z. P. Zhang, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Crystallography, Annihilation, Angular distribution, Electron–positron annihilation, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Production (computer science), Type (model theory)
Abstract: We present a new analysis of double charmonium production in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation. The observation of the processes ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\eta}}_{c}$, $J/\ensuremath{\psi}{\ensuremath{\chi}}_{c0}$, and $J/\ensuremath{\psi}{\ensuremath{\eta}}_{c}(2S)$ is confirmed using a data set more than 3 times larger than that of Belle's previous report, and no evidence for the process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}J/\ensuremath{\psi}$ is found. We perform an angular analysis for $J/\ensuremath{\psi}{\ensuremath{\eta}}_{c}$ production and set an upper limit on the production of $J/\ensuremath{\psi}J/\ensuremath{\psi}$. Processes of the type ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\psi}(2S)(c\overline{c}{)}_{\mathrm{r}\mathrm{e}\mathrm{s}}$ have been observed for the first time; their rates are found to be comparable to those of ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}(c\overline{c}{)}_{\mathrm{r}\mathrm{e}\mathrm{s}}$ processes.
Published: 2004

159. Measurement of thee+e−→D()+D()−cross sections

Author: T. Uglov, K. Abe, T. Abe, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, A. M. Bakich, Y. Ban, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, N. C. Hastings, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, H.-C. Huang, K. Inami, A. Ishikawa, H. Iwasaki, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Krokovny, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, H. Matsumoto, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, D. Mohapatra, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, Y. Sakai, O. Schneider, J. Schümann, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, L. Widhalm, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, Y. Yusa, C. C. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Crystallography, KEKB, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Heavy quark effective theory, Atomic physics, Belle experiment, Particle identification
Abstract: We report first measurements of e{sup +}e{sup -}{yields}D{sup (*)+}D{sup (*)-} processes far above threshold. The cross sections for e{sup +}e{sup -}{yields}D{sub T}*{sup +}D{sub L}*{sup -} and e{sup +}e{sup -}{yields}D{sup +}D{sub T}*{sup -} at {radical}(s){approx_equal}10.6 GeV/c{sup 2} are measured to be 0.55{+-}0.03{+-}0.05 and 0.62{+-}0.03{+-}0.06 pb, respectively. We set upper limits on the cross sections for e{sup +}e{sup -}{yields}D{sub T}*{sup +}D{sub T}*{sup -}, e{sup +}e{sup -}{yields}D{sub L}*{sup +}D{sub L}*{sup -}, e{sup +}e{sup -}{yields}D{sup +}D{sub L}*{sup -}, and e{sup +}e{sup -}{yields}D{sup +}D{sup -} processes. The analysis is based on 88.9 fb{sup -1} of data collected by the Belle experiment at the KEKB e{sup +}e{sup -} asymmetric collider.
Published: 2004

160. Evidence forB0→ρ0π0

Author: J. Dragic, T. Gershon, K. Abe, T. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, E. Banas, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, L. Y. Dong, R. Dowd, S. Eidelman, V. Eiges, Y. Enari, D. Epifanov, S. Fratina, N. Gabyshev, G. Gokhroo, B. Golob, A. Gordon, J. Haba, N. C. Hastings, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, P. Koppenburg, S. Korpar, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, S. E. Lee, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, C. W. Park, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, A. Poluektov, F. J. Ronga, M. Rozanska, H. Sagawa, Y. Sakai, T. R. Sarangi, O. Schneider, J. Schümann, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, O. Tajima, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Nuclear physics, Physics, Particle physics, KEKB, law, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, Resonance, Collider, law.invention
Abstract: We present the first evidence of the decay B0 --> rho0 pi0, using 140fb^-1 of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider. We detect a signal with a significance of 3.5 standard deviations, and measure the branching fraction to be Br(B0 ->- rho0 pi0) = (5.1 +/- 1.6(stat) +/- 0.9(syst))*10^-6.
Published: 2004

161. Search for the Lepton-Flavor-Violating Decayτ−→μ−ηat Belle

Author: Y. Enari, K. Abe, T. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, I. Bedny, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, B. G. Cheon, S.-K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, M. Danilov, L. Y. Dong, S. Eidelman, V. Eiges, D. Epifanov, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, F. Handa, T. Hara, K. Hayasaka, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, A. Kuzmin, Y.-J. Kwon, G. Leder, S. H. Lee, T. Lesiak, S.-W. Lin, J. MacNaughton, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, G. R. Moloney, T. Nagamine, E. Nakano, M. Nakao, H. Nakazawa, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, K. S. Park, N. Parslow, L. E. Piilonen, A. Poluektov, N. Root, N. Sato, H. Sagawa, S. Saitoh, Y. Sakai, O. Schneider, A. J. Schwartz, S. Semenov, K. Senyo, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, T. Tsuboyama, S. Uehara, K. Ueno, S. Uno, G. Varner, C. H. Wang, J. G. Wang, Y. Watanabe, B. D. Yabsley, Y. Yamada, M. Yamauchi, Heyoung Yang, J. Ying, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, Branching fraction, High Energy Physics::Phenomenology, Eta meson, Detector, General Physics and Astronomy, High Energy Physics::Experiment, Limit (mathematics), Nuclear Experiment, Flavor, Lepton
Abstract: We have searched for the lepton flavor violating decay tau(-)-->micro(-)eta using a data sample of 84.3 fb(-1) accumulated with the Belle detector at KEK. The eta meson was detected through the decay modes: eta-->gammagamma and pi(+)pi(-)pi(0). No signal candidates are found, and we obtain an upper limit for the branching fraction B(tau(-)-->micro(-)eta)
Published: 2004

162. Inclusive Measurement of the Photon Energy Spectrum inb→sγDecays

Author: P. Koppenburg, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, T. H. Kim, S. Korpar, P. Križan, P. Krokovny, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, F. J. Ronga, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, O. Schneider, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, J. Ying, Y. Yusa, C. C. Zhang, Z. P. Zhang, T. Ziegler, and D. Žontar
Subjects: Combinatorics, Physics, Particle physics, Electron–positron annihilation, Spectrum (functional analysis), General Physics and Astronomy, B meson, Photon energy, Energy (signal processing)
Abstract: We report a fully inclusive measurement of the flavor changing neutral current decay $b\ensuremath{\rightarrow}s\ensuremath{\gamma}$ in the energy range $1.8\text{ }\mathrm{G}\mathrm{e}\mathrm{V}\ensuremath{\le}{E}_{\ensuremath{\gamma}}^{*}\ensuremath{\le}2.8\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$, covering 95% of the total spectrum. Using $140\text{ }\mathrm{f}{\mathrm{b}}^{\mathrm{\ensuremath{-}}\mathrm{1}}$, we obtain $\mathcal{B}(b\ensuremath{\rightarrow}s\ensuremath{\gamma})=(3.55\ifmmode\pm\else\textpm\fi{}{0.32}_{\ensuremath{-}0.31\ensuremath{-}0.07}^{+0.30+0.11})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, where the errors are statistical, systematic, and from theory corrections. We also measure the first and second moments of the photon energy spectrum above $1.8\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$ and obtain $\ensuremath{\langle}{E}_{\ensuremath{\gamma}}\ensuremath{\rangle}=2.292\ifmmode\pm\else\textpm\fi{}0.026\ifmmode\pm\else\textpm\fi{}0.034\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$ and $\ensuremath{\langle}{E}_{\ensuremath{\gamma}}^{2}\ensuremath{\rangle}\ensuremath{-}\ensuremath{\langle}{E}_{\ensuremath{\gamma}}{\ensuremath{\rangle}}^{2}=0.0305\ifmmode\pm\else\textpm\fi{}0.0074\ifmmode\pm\else\textpm\fi{}0.0063\text{ }{\mathrm{G}\mathrm{e}\mathrm{V}}^{2}$, where the errors are statistical and systematic.
Published: 2004

163. Publisher's Note: Study ofCPViolating Effects in Time DependentB0(B¯0)→D(*)∓π±Decays [Phys. Rev. Lett.93, 031802 (2004)]

Author: T. R. Sarangi, K. Abe, T. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, S. Banerjee, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, M. Bračko, T. E. Browder, M.-C. Chang, P. Chang, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, J. Haba, K. Hara, N. C. Hasting, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, T. H. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, T. Nakadaira, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, K. S. Park, N. Parslow, L. E. Piilonen, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. K. Swain, O. Tajima, F. Takasaki, M. Tanaka, G. N. Taylor, T. Tomura, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, M.-Z. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, J. Ying, Y. Yusa, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, T. Ziegler, and D. Žontar
Subjects: Phase difference, Physics, Particle physics, General Physics and Astronomy, Resonance, CP violation
Abstract: We report measurements of time dependent decay rates for $B^0(\bar{B}^0) \to D^{(*)\mp}\pi^{\pm}$ decays and extraction of CP violation parameters containing $\phi_3$. Using fully reconstructed $D^{(*)}\pi$ events from a $140 {\rm fb}^{-1}$ data sample collected at the $\Upsilon(4S)$ resonance, we obtain the CP violation parameters for $D^* \pi$ and $D \pi$ decays, $2R_{D^{(*)} \pi} \sin (2\phi_1 + \phi_3 \pm \delta_{D^{(*)} \pi})$, where $R_{D^{(*)} \pi}$ is the ratio of the magnitudes of the doubly-Cabibbo-suppressed and Cabibbo-favoured amplitudes, and $\delta_{D^{(*)} \pi}$ is the strong phase difference between them. Under the assumption of $\delta_{D^{(*)} \pi}$ being close to either 0 or $180^{\circ}$, we obtain $|2R_{D^* \pi} \sin (2\phi_1 + \phi_3)| = 0.060 \pm 0.040(\mathrm{stat}) \pm 0.019(\mathrm{sys})$ and $|2R_{D \pi} \sin (2\phi_1 + \phi_3)| = 0.061 \pm 0.037(\mathrm{stat}) \pm 0.018(\mathrm{sys})$.
Published: 2004

164. Measurement of the branching fractions forB→ωKandB→ωπ

Author: C. H. Wang, K. Abe, N. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, T. Aso, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, S. Banerjee, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, L. Y. Dong, S. Eidelman, V. Eiges, T. Gershon, B. Golob, J. Haba, N. C. Hastings, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, Y.-J. Kwon, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, W. Mitaroff, K. Miyabayashi, H. Miyata, D. Mohapatra, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, N. Parslow, L. E. Piilonen, A. Poluektov, M. Rozanska, H. Sagawa, Y. Sakai, O. Schneider, J. Schümann, S. Semenov, K. Senyo, V. Sidorov, J. B. Singh, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, G. Varner, C. C. Wang, M.-Z. Wang, Y. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, J. Ying, Y. Yusa, C. C. Zhang, Z. P. Zhang, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Electron–positron annihilation, Hadron, Resonance, B meson, Branching (polymer chemistry)
Abstract: We report improved measurements of branching fractions for charmless hadronic two-body B meson decays containing an ω meson in the final state. The results are based on a data sample of 78 fb-1 collected on the Y(4S) resonance by the Belle detector. We measure the branching fractions B(B+→ωK+) = (6.5-1.2 +1.3±0.6) × 10-6 and B(B +→ωπ+) = (5.7-1.3 +1.4±0.6) × 10-6. We give 90% confidence upper limits for B(B0→ωK0)
Published: 2004

165. Study ofCPViolating Effects in Time DependentB0(B̄0)→D(*)∓π±Decays

Author: T. R. Sarangi, K. Abe, T. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, S. Banerjee, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, M. Bračko, T. E. Browder, M.-C. Chang, P. Chang, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, J. Haba, K. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, T. H. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, T. Nakadaira, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, K. S. Park, N. Parslow, L. E. Piilonen, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. K. Swain, O. Tajima, F. Takasaki, M. Tanaka, G. N. Taylor, T. Tomura, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, M.-Z. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, J. Ying, Y. Yusa, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, T. Ziegler, and D. Žontar
Subjects: Nuclear physics, Physics, Particle physics, Pion, Cabibbo–Kobayashi–Maskawa matrix, General Physics and Astronomy, CP violation, High Energy Physics::Experiment, B meson, Nuclear Experiment, Flavor, Lepton
Abstract: The measurements of time-dependent decay rates for B 0(B0) → D(*)∓π ∓ decays and extraction of CP violation parameters containing φ3 were discussed. It was found that a 140 fb-1 data sample, which contained 152 × 106 BB events, was used in the measurement. Charged leptons, pions and kaons were used to identify the flavor of the accompanying B meson. The results show that |2R D*π sin(2φ1 + φ3)| = 0.060 ± 0.040(stat) ± 0.019(syst) can be obtained.
Published: 2004

166. Observation of LargeCPViolation and Evidence for DirectCPViolation inB0→π+π−Decays

Author: K. Abe, N. Abe, T. Abe, I. Adachi, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, S. Banerjee, A. Bay, I. Bedny, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, D. Epifanov, J. Flanagan, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, J. Haba, K. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, H. Kakuno, T. Kamitani, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, A. Kibayashi, H. Kichimi, E. Kikutani, H. J. Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, Y.-J. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, H. Matsumoto, T. Matsumoto, A. Matyja, S. Michizono, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, Y. Ogawa, K. Ohmi, T. Ohshima, N. Ohuchi, K. Oide, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, N. Parslow, L. E. Piilonen, N. Root, M. Rozanska, H. Sagawa, Y. Sakai, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, R. Stamen, S. Stanič, M. Starič, R. Sugahara, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, M. Tawada, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, M.-Z. Wang, Y. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, J. Ying, M. Yokoyama, M. Yoshida, Y. Yusa, C. C. Zhang, Z. P. Zhang, T. Ziegler, D. Žontar, and D. Zürcher
Subjects: Nuclear physics, Physics, Particle physics, Electron–positron annihilation, General Physics and Astronomy, CP violation, B meson
Abstract: The CP violation parameters in Bo → π +π- decay were investigated. The flavor of the accompanying B meson was identified by reconstructing B o→π+π- CP eigenstate. It was observed that the expected sensitivity was optimized using the ratio LR. The study showed that there was a direct CP violation with a significance at or greater than 3.2σ.
Published: 2004

167. Measurement of theB→K*γbranching fractions and asymmetries

Author: M. Nakao, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, A. Bay, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, T. H. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, H. Nakazawa, K. Neichi, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, P. Pakhlov, H. Palka, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, F. J. Ronga, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, B. Shwartz, J. B. Singh, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, M.-Z. Wang, M. Watanabe, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, Y. Yusa, C. C. Zhang, J. Zhang, Z. P. Zhang, V. Zhilich, T. Ziegler, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Electron–positron annihilation, media_common.quotation_subject, Isospin, Radiative decay, B meson, Branching (polymer chemistry), Asymmetry, media_common
Abstract: We report measurements of the radiative decay B --> K^*\gamma. The analysis is based on a data sample containing 85.0*10^6 B meson pairs collected by the Belle detector at the KEKB storage ring. We measure branching fractions of Br(B^0 --> K^{*0}\gamma) = (4.01 \pm 0.21 \pm 0.17)*10^{-5} and Br(B^+ --> K^{*+}\gamma) = (4.25 \pm 0.31 \pm 0.24)*10^{-5}, where the first and second errors are statistical and systematic, respectively. The isospin asymmetry between B^0 and B^+ decay widths is measured to be \Delta_{0+} = +0.012 \pm 0.044 \pm 0.026. We search for a partial rate asymmetry between CP conjugate modes, and find A_{cp}(B --> K^*\gamma) = =0.015 \pm 0.044 \pm 0.012.
Published: 2004

168. Observation of B+--LambdaLambdaK+

Author: Y-J, Lee, M-Z, Wang, K, Abe, T, Abe, H, Aihara, Y, Asano, V, Aulchenko, T, Aushev, T, Aziz, S, Bahinipati, A M, Bakich, Y, Ban, I, Bedny, U, Bitenc, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, P, Chang, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, A, Chuvikov, M, Danilov, M, Dash, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, S, Fratina, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, B, Golob, R, Guo, J, Haba, K, Hayasaka, H, Hayashii, M, Hazumi, T, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, Y B, Hsiung, A, Imoto, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, M, Iwasaki, J H, Kang, J S, Kang, N, Katayama, H, Kawai, T, Kawasaki, H R, Khan, H, Kichimi, H J, Kim, J H, Kim, S K, Kim, P, Koppenburg, S, Korpar, P, Krokovny, A, Kuzmin, Y-J, Kwon, S H, Lee, T, Lesiak, J, Li, S-W, Lin, J, Macnaughton, G, Majumder, F, Mandl, T, Matsumoto, A, Matyja, Y, Mikami, W, Mitaroff, K, Miyabayashi, H, Miyata, R, Mizuk, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, M, Nakao, S, Nishida, O, Nitoh, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, N, Parslow, L E, Piilonen, H, Sagawa, S, Saitoh, Y, Sakai, N, Sato, O, Schneider, J, Schümann, S, Semenov, K, Senyo, M E, Sevior, H, Shibuya, V, Sidorov, N, Soni, R, Stamen, S, Stanic, M, Staric, K, Sumisawa, T, Sumiyoshi, O, Tajima, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, G N, Taylor, Y, Teramoto, S N, Tovey, T, Tsuboyama, S, Uehara, T, Uglov, K, Ueno, Y, Unno, S, Uno, G, Varner, K E, Varvell, C H, Wang, M, Watanabe, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, J, Ying, Y, Yuan, Y, Yusa, S L, Zang, C C, Zhang, J, Zhang, Z P, Zhang, T, Ziegler, and D, Zontar
Abstract: We report the first observation of the charmless hyperonic B decay, B+--LambdaLambdaK+, using a 140 fb(-1) data sample recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB (e+)(e-) collider. The measured branching fraction is B(B+--LambdaLambdaK+) = (2.91(+0.90)(-0.70) +/- 0.38) x 10(-6). We also perform a search for the related decay mode B+--LambdaLambdapi+, but do not find a significant signal. We set a 90% confidence-level upper limit of B(B+--LambdaLambdapi+)2.8 x 10(-6).
Published: 2004

169. Improved measurements of the branching fractions forB→Kπ,ππ, andKK¯decays

Author: Y. Chao, K. Suzuki, Y. Unno, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, S. Banerjee, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, J. Haba, T. Hara, M. Hazumi, I. Higuchi, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, O. Schneider, J. Schümann, A. J. Schwartz, S. Semenov, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, G. Varner, C. H. Wang, J. G. Wang, M.-Z. Wang, M. Watanabe, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, J. Ying, Y. Yuan, S. L. Zang, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Electron–positron annihilation, Hadron, Resonance, Branching (polymer chemistry), Storage ring, Bar (unit)
Abstract: We report improved measurements of branching fractions for $B\to K\pi$, $\pi^+\pi^-$, $\pi^+\pi^0$ and $K\bar{K}$ decays based on a data sample of 85.0 million $B\bar{B}$ pairs collected at the $\Upsilon (4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ storage ring. This data sample is almost three times larger than the sample previously used. We observe clear signals for $B\to K\pi$, $\pi^+\pi^-$ and $\pi^+\pi^0$ decays and set upper limits on $B\to K\bar{K}$ decays. The results can be used to give model-dependent constraints on the CKM angle $\phi_3$, as well as limits on the hadronic uncertainty in the time-dependent analysis of the angle $\phi_2$.
Published: 2004

170. Measurement of the branching fraction and CP asymmetry in B+ --rho+pi0

Author: J, Zhang, K, Abe, T, Abe, H, Aihara, Y, Asano, V, Aulchenko, T, Aushev, T, Aziz, S, Bahinipati, A M, Bakich, A, Bay, I, Bedny, U, Bitenc, I, Bizjak, S, Blyth, A, Bondar, A, Bozek, M, Bracko, T E, Browder, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, A, Chuvikov, M, Danilov, M, Dash, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, S, Fratina, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, B, Golob, H, Hayashii, M, Hazumi, T, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, Y B, Hsiung, T, Iijima, A, Imoto, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, N, Katayama, H, Kawai, T, Kawasaki, H R, Khan, H, Kichimi, H J, Kim, J H, Kim, T H, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, S, Kumar, A, Kuzmin, Y-J, Kwon, G, Leder, S E, Lee, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, J, Macnaughton, G, Majumder, F, Mandl, T, Matsumoto, W, Mitaroff, K, Miyabayashi, H, Miyake, H, Miyata, R, Mizuk, D, Mohapatra, G R, Moloney, T, Mori, T, Nagamine, Y, Nagasaka, M, Nakao, S, Nishida, O, Nitoh, T, Nozaki, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, C W, Park, H, Park, N, Parslow, L E, Piilonen, F J, Ronga, M, Rozanska, H, Sagawa, Y, Sakai, T R, Sarangi, O, Schneider, J, Schümann, A J, Schwartz, S, Semenov, K, Senyo, M E, Sevior, H, Shibuya, B, Shwartz, A, Somov, N, Soni, R, Stamen, S, Stanic, M, Staric, K, Sumisawa, T, Sumiyoshi, S, Suzuki, O, Tajima, F, Takasaki, K, Tamai, M, Tanaka, G N, Taylor, Y, Teramoto, T, Tomura, T, Tsuboyama, T, Tsukamoto, S, Uehara, T, Uglov, K, Ueno, Y, Unno, S, Uno, G, Varner, K E, Varvell, S, Villa, C C, Wang, C H, Wang, M-Z, Wang, M, Watanabe, Y, Watanabe, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, Heyoung, Yang, J, Ying, Y, Yusa, S L, Zang, C C, Zhang, Z P, Zhang, V, Zhilich, T, Ziegler, and D, Zontar
Abstract: We report a measurement of the branching fraction for the decay B+ --rho(+) pi(0) based on a 140 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider. We measure the branching fraction B(B(+) --rho(+)pi(0)) = (13.2 +/- 2.3(stat)(+1.4)(-1.9)(syst)) x 10(-6), and the CP-violating asymmetry A(CP)(B-/+ --rho(-/+)pi(0))=0.06 +/- 0.17(stat)(+0.04)(-0.05)(syst).
Published: 2004

171. Evidence for B0--rho0pi0

Author: J, Dragic, T, Gershon, K, Abe, T, Abe, H, Aihara, Y, Asano, V, Aulchenko, T, Aushev, T, Aziz, A M, Bakich, E, Banas, A, Bay, I, Bedny, U, Bitenc, I, Bizjak, S, Blyth, A, Bondar, A, Bozek, M, Bracko, T E, Browder, P, Chang, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, A, Chuvikov, S, Cole, L Y, Dong, R, Dowd, S, Eidelman, V, Eiges, Y, Enari, D, Epifanov, S, Fratina, N, Gabyshev, G, Gokhroo, B, Golob, A, Gordon, J, Haba, N C, Hastings, H, Hayashii, M, Hazumi, T, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, Y B, Hsiung, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, M, Iwasaki, J H, Kang, J S, Kang, H, Kawai, T, Kawasaki, H R, Khan, H, Kichimi, H J, Kim, J H, Kim, S K, Kim, P, Koppenburg, S, Korpar, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, S E, Lee, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, J, MacNaughton, G, Majumder, F, Mandl, T, Matsumoto, A, Matyja, W, Mitaroff, H, Miyake, H, Miyata, D, Mohapatra, G R, Moloney, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, C W, Park, H, Park, N, Parslow, L S, Peak, L E, Piilonen, A, Poluektov, F J, Ronga, M, Rozanska, H, Sagawa, Y, Sakai, T R, Sarangi, O, Schneider, J, Schümann, A J, Schwartz, S, Semenov, K, Senyo, M E, Sevior, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, A, Somov, N, Soni, R, Stamen, S, Stanic, M, Staric, K, Sumisawa, O, Tajima, K, Tamai, N, Tamura, M, Tanaka, G N, Taylor, Y, Teramoto, T, Tomura, T, Tsuboyama, T, Tsukamoto, S, Uehara, T, Uglov, K, Ueno, Y, Unno, S, Uno, G, Varner, K E, Varvell, S, Villa, C C, Wang, C H, Wang, M-Z, Wang, M, Watanabe, Y, Watanabe, B D, Yabsley, Y, Yamada, A, Yamaguchi, H, Yamamoto, Y, Yamashita, M, Yamauchi, Heyoung, Yang, J, Ying, J, Zhang, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We present the first evidence of the decay B0--rho(0)pi(0), using 140 fb(-1) of data collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) collider. We detect 15.1+/-4.8 signal events with a significance of 3.5 standard deviations and measure the branching fraction to be B(B0--rho(0)pi(0))=(5.1+/-1.6(stat)+/-0.9(syst))x10(-6).
Published: 2004

172. Upper Bound on the Decayτ→μγfrom the Belle Detector

Author: K. Abe, T. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, S. Banerjee, A. Bay, I. Bedny, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, J. Flanagan, C. Fukunaga, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, R. Guo, J. Haba, C. Hagner, F. Handa, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, E. Kikutani, H. J. Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Krokovny, R. Kulasiri, A. Kuzmin, Y.-J. Kwon, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, F. Mandl, T. Matsumoto, A. Matyja, S. Michizono, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyata, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, Y. Ogawa, K. Ohmi, Y. Ohnishi, T. Ohshima, N. Ohuchi, T. Okabe, S. Okuno, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, N. Parslow, L. E. Piilonen, N. Root, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, J. Schümann, A. J. Schwartz, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, C. C. Wang, C. H. Wang, J. G. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, M. Yoshida, Y. Yusa, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Detector, General Physics and Astronomy, High Energy Physics::Experiment, Limit (mathematics), Upper and lower bounds, Signal, Confidence interval
Abstract: We have performed a search for the lepton-flavor-violating decay tau -> mu gamma using a data sample of 86.3fb^{-1} accumulated by the Belle detector at KEK. No evidence for a signal is seen, and we set an upper limit for the branching fraction of B(tau -> mu gamma) < 3.1 x 10^{-7} at the 90% confidence level.
Published: 2004

173. Search for the lepton-flavor-violating decay tau- --micro-eta at Belle

Author: Y, Enari, K, Abe, T, Abe, I, Adachi, H, Aihara, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, I, Bedny, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, Y, Chao, B G, Cheon, S-K, Choi, Y, Choi, Y K, Choi, A, Chuvikov, M, Danilov, L Y, Dong, S, Eidelman, V, Eiges, D, Epifanov, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, B, Golob, F, Handa, T, Hara, K, Hayasaka, H, Hayashii, M, Hazumi, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, S U, Kataoka, N, Katayama, H, Kawai, T, Kawasaki, H, Kichimi, H J, Kim, J H, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, A, Kuzmin, Y-J, Kwon, G, Leder, S H, Lee, T, Lesiak, S-W, Lin, J, MacNaughton, F, Mandl, T, Matsumoto, A, Matyja, W, Mitaroff, H, Miyake, H, Miyata, G R, Moloney, T, Nagamine, E, Nakano, M, Nakao, H, Nakazawa, S, Nishida, O, Nitoh, S, Ogawa, T, Ohshima, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, C W, Park, H, Park, K S, Park, N, Parslow, L E, Piilonen, A, Poluektov, N, Root, N, Sato, H, Sagawa, S, Saitoh, Y, Sakai, O, Schneider, A J, Schwartz, S, Semenov, K, Senyo, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugi, K, Sumisawa, T, Sumiyoshi, S Y, Suzuki, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, Y, Teramoto, T, Tomura, T, Tsuboyama, S, Uehara, K, Ueno, S, Uno, G, Varner, C H, Wang, J G, Wang, Y, Watanabe, B D, Yabsley, Y, Yamada, M, Yamauchi, Heyoung, Yang, J, Ying, Y, Yusa, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We have searched for the lepton flavor violating decay tau(-)--micro(-)eta using a data sample of 84.3 fb(-1) accumulated with the Belle detector at KEK. The eta meson was detected through the decay modes: eta--gammagamma and pi(+)pi(-)pi(0). No signal candidates are found, and we obtain an upper limit for the branching fraction B(tau(-)--micro(-)eta)3.4 x 10(-7) at the 90% confidence level.
Published: 2004

174. Observation ofB+→pp¯π+,B0→pp¯K0, andB+→pp¯K*+

Author: M.-Z. Wang, K. Abe, T. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bay, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, M.-C. Chang, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, P. H. Chu, A. Chuvikov, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, T. Hara, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, J. H. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S. H. Lee, T. Lesiak, A. Limosani, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, W. Mitaroff, H. Miyake, H. Miyata, T. Nagamine, Y. Nagasaka, E. Nakano, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, N. Parslow, L. E. Piilonen, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, O. Schneider, A. J. Schwartz, S. Semenov, H. Shibuya, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, J. G. Wang, Y. Watanabe, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, J. Ying, Y. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Crystallography, General Physics and Astronomy, Type (model theory)
Abstract: We report the first observation of a $b\ensuremath{\rightarrow}u$ type charmless baryonic $B$ decay, ${B}^{+}\ensuremath{\rightarrow}p\overline{p}{\ensuremath{\pi}}^{+}$, as well as $b\ensuremath{\rightarrow}s$ type ${B}^{0}\ensuremath{\rightarrow}p\overline{p}{K}^{0}$ and ${B}^{+}\ensuremath{\rightarrow}p\overline{p}{K}^{*+}$ decays. The analysis is based on a $78\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample recorded on the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at KEKB. We find $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}p\overline{p}{\ensuremath{\pi}}^{+})=({3.06}_{\ensuremath{-}0.62}^{+0.73}\ifmmode\pm\else\textpm\fi{}0.37)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}p\overline{p}{K}^{0})=({1.88}_{\ensuremath{-}0.60}^{+0.77}\ifmmode\pm\else\textpm\fi{}0.23)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, and $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}p\overline{p}{K}^{*+})=({10.3}_{\ensuremath{-}2.8\ensuremath{-}1.7}^{+3.6+1.3})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$. We also update $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}p\overline{p}{K}^{+})=({5.66}_{\ensuremath{-}0.57}^{+0.67}\ifmmode\pm\else\textpm\fi{}0.62)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and present an upper limit on $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}p\overline{p}{K}^{*0})$ at the 90% confidence level. A common feature of the observed decay modes is threshold peaking in baryon pair invariant mass.
Published: 2004

175. Study of CP violating effects in time dependent B0(B0)--D(*)-/+pi+/- decays

Author: T R, Sarangi, K, Abe, T, Abe, H, Aihara, Y, Asano, V, Aulchenko, T, Aushev, S, Bahinipati, A M, Bakich, Y, Ban, S, Banerjee, U, Bitenc, I, Bizjak, S, Blyth, A, Bondar, M, Bracko, T E, Browder, M-C, Chang, P, Chang, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, A, Chuvikov, S, Cole, M, Danilov, M, Dash, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, S, Fratina, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, J, Haba, K, Hara, N C, Hastings, H, Hayashii, M, Hazumi, T, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, H, Iwasaki, M, Iwasaki, J H, Kang, J S, Kang, P, Kapusta, S U, Kataoka, H, Kawai, T, Kawasaki, H, Kichimi, H J, Kim, H O, Kim, S K, Kim, T H, Kim, K, Kinoshita, S, Korpar, P, Krizan, P, Krokovny, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, T, Lesiak, J, Li, S-W, Lin, D, Liventsev, J, MacNaughton, F, Mandl, D, Marlow, T, Matsumoto, A, Matyja, Y, Mikami, W, Mitaroff, K, Miyabayashi, H, Miyake, H, Miyata, D, Mohapatra, G R, Moloney, T, Nagamine, Y, Nagasaka, T, Nakadaira, M, Nakao, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, H, Palka, H, Park, K S, Park, N, Parslow, L E, Piilonen, M, Rozanska, H, Sagawa, S, Saitoh, Y, Sakai, M, Satapathy, O, Schneider, J, Schümann, C, Schwanda, A J, Schwartz, S, Semenov, K, Senyo, M E, Sevior, H, Shibuya, V, Sidorov, J B, Singh, N, Soni, R, Stamen, S, Stanic, M, Staric, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S K, Swain, O, Tajima, F, Takasaki, M, Tanaka, G N, Taylor, T, Tomura, K, Trabelsi, T, Tsuboyama, S, Uehara, T, Uglov, K, Ueno, Y, Unno, S, Uno, G, Varner, K E, Varvell, C H, Wang, M-Z, Wang, M, Watanabe, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, J, Ying, Y, Yusa, J, Zhang, Z P, Zhang, Y, Zheng, V, Zhilich, T, Ziegler, and D, Zontar
Abstract: We report measurements of time dependent decay rates for B0(B(0))--D((*)-/+)pi(+/-) decays and extraction of CP violation parameters containing phi(3). Using fully reconstructed D((*))pi events from a 140 fb(-1) data sample collected at the Upsilon(4S) resonance, we obtain the CP violation parameters for D(*)pi and Dpi decays, 2R(D((*))pi)sin((2phi(1)+phi(3)+/-delta(D((*))pi)), where R(D((*))pi) is the ratio of the magnitudes of the doubly Cabibbo-suppressed and Cabibbo-favored amplitudes, and delta(D((*))pi) is the strong phase difference between them. Under the assumption of delta(D((*))pi) being close to either 0 degrees or 180 degrees, we obtain |2R(D(*)pi)sin((2phi(1)+phi(3))|=0.060+/-0.040(stat)+/-0.019(syst) and |2R(Dpi)sin((2phi(1)+phi(3))|=0.061+/-0.037(stat)+/-0.018(syst).
Published: 2004

176. Observation of the Radiative DecayD0→φγ

Author: O. Tajima, K. Abe, H. Aihara, M. Akatsu, V. Aulchenko, T. Aushev, A. M. Bakich, A. Bay, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, A. Chuvikov, M. Danilov, L. Y. Dong, S. Eidelman, V. Eiges, F. Fang, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, J. Haba, C. Hagner, F. Handa, K. Hasuko, M. Hazumi, I. Higuchi, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, H. Kichimi, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, H. Matsumoto, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyata, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, E. Nakano, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, C. W. Park, K. S. Park, N. Parslow, L. E. Piilonen, H. Sagawa, M. Saigo, Y. Sakai, O. Schneider, J. Schümann, A. J. Schwartz, S. Semenov, K. Senyo, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, C. C. Wang, J. G. Wang, Y. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear physics, Particle physics, KEKB, Meson, Electron–positron annihilation, Radiative decay, General Physics and Astronomy, Belle experiment
Abstract: We report the observation of the decay D0-->phigamma with a statistical significance of 5.4sigma in 78.1 fb(-1) of data collected by the Belle experiment at the KEKB e+e- collider. This is the first observation of a flavor-changing radiative decay of a charmed meson. The Cabibbo- and color-suppressed decays D0-->phipi(0), phieta are also observed for the first time. We measure branching fractions B(D0-->phigamma)=[2.60(+0.70)(-0.61)(stat)+0.15-0.17(syst)] x 10(-5), B(D0-->phipi(0))=[8.01+/-0.26(stat)+/-0.47(syst)] x 10(-4), and B(D0-->phieta)=[1.48+/-0.47(stat)+/-0.09(syst)] x 10(-4).
Published: 2004

177. Measurement of|Vub|Using InclusiveB→XuℓνDecays with a NovelXu-Reconstruction Method

Author: H. Kakuno, K. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, S. Banerjee, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, C. Hagner, T. Hara, M. Hazumi, I. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, Y.-J. Kwon, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, J. MacNaughton, F. Mandl, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, K. S. Park, N. Parslow, L. S. Peak, L. E. Piilonen, H. Sagawa, S. Saitoh, Y. Sakai, O. Schneider, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugiyama, T. Sumiyoshi, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, Y. Yuan, Y. Yusa, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Nuclear physics, Physics, Particle physics, Computer data analysis, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, Neutrino, Reconstruction method
Abstract: We report the measurement of an inclusive partial branching fraction for charmless semileptonic B decay and the extraction of /V(ub)/. Candidates for B-->X(u)lnu are identified with a novel X(u) reconstruction method based on neutrino reconstruction via missing 4-momentum and a technique called "simulated annealing." Based on 86.9 fb(-1) of data taken with the Belle detector, we obtain DeltaB(B-->X(u)lnu;M(X) 8.0 GeV2/c2)=[7.37+/-0.89(stat)+/-1.12(syst)+/-0.55(b-->c)+/-0.24(b-->u)]x10(-4) and determine |V(ub)|=[4.66+/-0.28(stat)+/-0.35(syst)+/-0.17(b-->c)+/-0.08(b-->u)+/-0.58(theory)]x10(-3).
Published: 2004

178. Observation of RadiativeB→ϕKγDecays

Author: A. Drutskoy, K. Abe, T. Abe, H. Aihara, M. Akatsu, Y. Asano, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, Y. Chao, B. G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, M. Danilov, M. Dash, L. Y. Dong, S. Eidelman, V. Eiges, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, J. Haba, C. Hagner, F. Handa, N. C. Hastings, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, Y.-J. Kwon, S. H. Lee, T. Lesiak, J. Li, J. MacNaughton, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyata, D. Mohapatra, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, N. Parslow, M. Peters, L. E. Piilonen, N. Root, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, A. Satpathy, O. Schneider, J. Schümann, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, Y. Yamada, Y. Yamashita, M. Yamauchi, Y. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Branching fraction, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Gamma ray, General Physics and Astronomy, Photon energy, Belle experiment, law.invention, Nuclear physics, KEKB, law, Radiative transfer, High Energy Physics::Experiment, Collider
Abstract: The radiative decay B-->phi K gamma is observed for the first time. The branching fraction for the charged B--->phi K- gamma decay mode is measured to be B(B--->phi K- gamma)=(3.4+/-0.9+/-0.4)x10(-6). The photon energy distribution for the B--->phi K- gamma decay is presented. The signal for the neutral B(0)-->phi K(0)gamma decay mode is not statistically significant and an upper limit, B(B(0)-->phi K(0)gamma)
Published: 2004

179. Search forB−→J/ψΛp¯decay

Author: S. L. Zang, K. Abe, T. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, M. Danilov, L. Y. Dong, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, R. Guo, C. Hagner, F. Handa, N. C. Hastings, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, H. Park, N. Parslow, L. E. Piilonen, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, C. C. Wang, C. H. Wang, J. G. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, J. Ying, Y. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, KEKB, law, Branching fraction, Electron–positron annihilation, Limit (mathematics), Collider, Resonance (particle physics), law.invention
Abstract: We report the results of a search for B- → J/ ψ Λp based on a data set of 78 fb-1 data collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e - collider. No substantial signal is found, and we set the branching fraction upper limit Β(- → J/ ψ Λp)
Published: 2004

180. Observation of large CP violation and evidence for direct CP violation in B0--pi(+)pi(-) decays

Author: K, Abe, N, Abe, T, Abe, I, Adachi, H, Aihara, K, Akai, M, Akatsu, M, Akemoto, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, S, Banerjee, A, Bay, I, Bedny, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, Y, Chao, K F, Chen, B G, Cheon, R, Chistov, S K, Choi, Y, Choi, A, Chuvikov, S, Cole, M, Danilov, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, D, Epifanov, J, Flanagan, K, Furukawa, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, J, Haba, K, Hara, N C, Hastings, H, Hayashii, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, W S, Hou, Y B, Hsiung, H C, Huang, T, Iijima, H, Ikeda, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, H, Kakuno, T, Kamitani, J H, Kang, J S, Kang, P, Kapusta, S U, Kataoka, N, Katayama, H, Kawai, T, Kawasaki, A, Kibayashi, H, Kichimi, E, Kikutani, H J, Kim, J H, Kim, S K, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, S, Kumar, A, Kuzmin, Y J, Kwon, J S, Lange, G, Leder, S H, Lee, Y J, Lee, T, Lesiak, J, Li, A, Limosani, S W, Lin, D, Liventsev, J, MacNaughton, F, Mandl, D, Marlow, H, Matsumoto, T, Matsumoto, A, Matyja, S, Michizono, T, Mimashi, W, Mitaroff, K, Miyabayashi, H, Miyake, H, Miyata, D, Mohapatra, G R, Moloney, A, Murakami, T, Nagamine, Y, Nagasaka, T, Nakadaira, T T, Nakamura, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, K, Neichi, S, Nishida, O, Nitoh, S, Noguchi, T, Nozaki, S, Ogawa, Y, Ogawa, K, Ohmi, T, Ohshima, N, Ohuchi, K, Oide, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, H, Palka, C W, Park, H, Park, N, Parslow, L E, Piilonen, N, Root, M, Rozanska, H, Sagawa, Y, Sakai, O, Schneider, J, Schümann, C, Schwanda, A J, Schwartz, S, Semenov, K, Senyo, H, Shibuya, T, Shidara, B, Shwartz, V, Sidorov, J B, Singh, N, Soni, R, Stamen, S, Stanic, M, Staric, R, Sugahara, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, O, Tajima, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, M, Tawada, Y, Teramoto, T, Tomura, T, Tsuboyama, T, Tsukamoto, S, Uehara, T, Uglov, K, Ueno, Y, Unno, S, Uno, G, Varner, K E, Varvell, C C, Wang, C H, Wang, M Z, Wang, Y, Watanabe, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, H, Yanai, Heyoung, Yang, J, Ying, M, Yokoyama, M, Yoshida, Y, Yusa, C C, Zhang, Z P, Zhang, T, Ziegler, D, Zontar, and D, Zürcher
Abstract: We report the first observation of CP violation in B0--pi(+)pi(-) decays based on 152x10(6) gamma (4S)--BB decays collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct a B0--pi(+)pi(-) CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two B meson decay points, we obtain A(pipi)=+0.58+/-0.15(stat)+/-0.07(syst) and S(pipi)=-1.00+/-0.21(stat)+/-0.07(syst). We rule out the CP-conserving case, A(pipi)=S(pipi)=0, at a level of 5.2 standard deviations. We also find evidence for direct CP violation with a significance at or greater than 3.2 standard deviations for any S(pipi) value.
Published: 2004

181. Observation ofB→K*ℓ+ℓ−

Author: A. Ishikawa, K. Abe, T. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, J. Flanagan, C. Fukunaga, Y. Funakoshi, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, C. Hagner, F. Handa, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Iijima, K. Inami, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, E. Kikutani, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, M. Masuzawa, T. Matsumoto, A. Matyja, S. Michizono, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, T. T. Nakamura, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, Y. Ogawa, K. Ohmi, Y. Ohnishi, T. Ohshima, N. Ohuchi, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, N. Parslow, L. S. Peak, L. E. Piilonen, N. Root, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, T. Shidara, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, S. K. Swain, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, J. Ying, M. Yoshida, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Nuclear physics, Physics, Muon, KEKB, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy
Abstract: We report the observation of the flavor-changing neutral current decay B-->K*l(+l-) and an improved measurement of the decay B-->Kl(+l-), where l represents an electron or a muon, with a data sample of 140 fb(-1) accumulated at the Y(4S) resonance with the Belle detector at KEKB. The results for the branching fractions are B(B-->K*l(+l-))=(11.5(-2.4)(+2.6)+/-0.8+/-0.2)x10(-7) and B(B-->Kl(+l-))=(4.8(-0.9)(+1.0)+/-0.3+/-0.1)x10(-7), where the first error is statistical, the second is systematic and the third is from model dependence.
Published: 2003

182. Evidence forB→ϕϕK

Author: H.-C. Huang, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, F. Handa, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, J. H. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, Y.-J. Kwon, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, H. Matsumoto, T. Matsumoto, W. Mitaroff, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, K. S. Park, N. Parslow, J.-P. Perroud, M. Peters, L. E. Piilonen, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, A. Satpathy, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, T. Seki, S. Semenov, M. E. Sevior, T. Shibata, H. Shibuya, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, Y. Yusa, C. C. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: General Physics and Astronomy
Published: 2003

183. Measurement of /V(ub)/ using inclusive B--X(u)lnu decays with a novel X(u)-reconstruction method

Author: H, Kakuno, K, Abe, I, Adachi, H, Aihara, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, S, Banerjee, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, A, Chuvikov, S, Cole, M, Danilov, M, Dash, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, B, Golob, J, Haba, C, Hagner, T, Hara, M, Hazumi, I, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, T, Kawasaki, H, Kichimi, H J, Kim, J H, Kim, K, Kinoshita, S, Korpar, P, Krizan, P, Krokovny, Y-J, Kwon, G, Leder, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, J, MacNaughton, F, Mandl, A, Matyja, Y, Mikami, W, Mitaroff, K, Miyabayashi, H, Miyata, G R, Moloney, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, C W, Park, H, Park, K S, Park, N, Parslow, L S, Peak, L E, Piilonen, H, Sagawa, S, Saitoh, Y, Sakai, O, Schneider, A J, Schwartz, S, Semenov, K, Senyo, M E, Sevior, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugiyama, T, Sumiyoshi, S Y, Suzuki, O, Tajima, F, Takasaki, K, Tamai, M, Tanaka, Y, Teramoto, T, Tomura, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, T, Uglov, Y, Unno, S, Uno, G, Varner, K E, Varvell, C C, Wang, C H, Wang, J G, Wang, M-Z, Wang, M, Watanabe, Y, Watanabe, B D, Yabsley, Y, Yamada, A, Yamaguchi, H, Yamamoto, Y, Yamashita, M, Yamauchi, H, Yanai, Heyoung, Yang, Y, Yuan, Y, Yusa, J, Zhang, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We report the measurement of an inclusive partial branching fraction for charmless semileptonic B decay and the extraction of /V(ub)/. Candidates for B--X(u)lnu are identified with a novel X(u) reconstruction method based on neutrino reconstruction via missing 4-momentum and a technique called "simulated annealing." Based on 86.9 fb(-1) of data taken with the Belle detector, we obtain DeltaB(B--X(u)lnu;M(X)1.7 GeV/c2,q28.0 GeV2/c2)=[7.37+/-0.89(stat)+/-1.12(syst)+/-0.55(b--c)+/-0.24(b--u)]x10(-4) and determine |V(ub)|=[4.66+/-0.28(stat)+/-0.35(syst)+/-0.17(b--c)+/-0.08(b--u)+/-0.58(theory)]x10(-3).
Published: 2003

184. Observation of the radiative decay D0--phigamma

Author: O, Tajima, K, Abe, H, Aihara, M, Akatsu, V, Aulchenko, T, Aushev, A M, Bakich, A, Bay, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, Y, Chao, B G, Cheon, R, Chistov, Y, Choi, Y K, Choi, A, Chuvikov, M, Danilov, L Y, Dong, S, Eidelman, V, Eiges, F, Fang, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, J, Haba, C, Hagner, F, Handa, K, Hasuko, M, Hazumi, I, Higuchi, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, Y, Iwasaki, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, H, Kichimi, H J, Kim, Hyunwoo, Kim, J H, Kim, S K, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, J, MacNaughton, G, Majumder, F, Mandl, H, Matsumoto, T, Matsumoto, A, Matyja, Y, Mikami, W, Mitaroff, K, Miyabayashi, H, Miyata, D, Mohapatra, G R, Moloney, T, Nagamine, Y, Nagasaka, E, Nakano, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, S, Okuno, S L, Olsen, H, Ozaki, C W, Park, K S, Park, N, Parslow, L E, Piilonen, H, Sagawa, M, Saigo, Y, Sakai, O, Schneider, J, Schümann, A J, Schwartz, S, Semenov, K, Senyo, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, F, Takasaki, K, Tamai, N, Tamura, Y, Teramoto, T, Tomura, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, S, Uno, G, Varner, C C, Wang, J G, Wang, Y, Watanabe, B D, Yabsley, Y, Yamada, A, Yamaguchi, H, Yamamoto, Y, Yamashita, M, Yamauchi, Y, Yusa, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We report the observation of the decay D0--phigamma with a statistical significance of 5.4sigma in 78.1 fb(-1) of data collected by the Belle experiment at the KEKB e+e- collider. This is the first observation of a flavor-changing radiative decay of a charmed meson. The Cabibbo- and color-suppressed decays D0--phipi(0), phieta are also observed for the first time. We measure branching fractions B(D0--phigamma)=[2.60(+0.70)(-0.61)(stat)+0.15-0.17(syst)] x 10(-5), B(D0--phipi(0))=[8.01+/-0.26(stat)+/-0.47(syst)] x 10(-4), and B(D0--phieta)=[1.48+/-0.47(stat)+/-0.09(syst)] x 10(-4).
Published: 2003

185. Upper bound on the decay tau--microgamma from the Belle detector

Author: K, Abe, T, Abe, I, Adachi, Byoung Sup, Ahn, H, Aihara, K, Akai, M, Akatsu, M, Akemoto, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, S, Banerjee, A, Bay, I, Bedny, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, A, Chuvikov, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, J, Flanagan, C, Fukunaga, K, Furukawa, N, Gabyshev, A, Garmash, T, Gershon, R, Guo, J, Haba, C, Hagner, F, Handa, H, Hayashii, M, Hazumi, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, T, Iijima, H, Ikeda, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, N, Katayama, H, Kawai, T, Kawasaki, H, Kichimi, E, Kikutani, H J, Kim, J H, Kim, S K, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krokovny, R, Kulasiri, A, Kuzmin, Y-J, Kwon, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, D, Liventsev, F, Mandl, T, Matsumoto, A, Matyja, S, Michizono, T, Mimashi, W, Mitaroff, K, Miyabayashi, H, Miyata, D, Mohapatra, T, Mori, T, Nagamine, Y, Nagasaka, T T, Nakamura, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, S, Ogawa, Y, Ogawa, K, Ohmi, Y, Ohnishi, T, Ohshima, N, Ohuchi, T, Okabe, S, Okuno, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, H, Park, N, Parslow, L E, Piilonen, N, Root, H, Sagawa, S, Saitoh, Y, Sakai, M, Satapathy, A, Satpathy, O, Schneider, J, Schümann, A J, Schwartz, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, H, Shibuya, T, Shidara, B, Shwartz, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugi, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, M, Tawada, G N, Taylor, Y, Teramoto, T, Tomura, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, S, Uno, G, Varner, C C, Wang, C H, Wang, J G, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, H, Yanai, Heyoung, Yang, M, Yoshida, Y, Yusa, Z P, Zhang, Y, Zheng, V, Zhilich, and D, Zontar
Abstract: We have performed a search for the lepton-flavor-violating decay tau--microgamma using a data sample of 86.3 fb(-1) accumulated by the Belle detector at KEK. No evidence for a signal is seen, and we set an upper limit for the branching fraction of B(tau--microgamma)3.1 x 10(-7) at the 90% confidence level.
Published: 2003

186. Observation of B(+)--pppi+, B0--ppK0, and B(+)--ppK(*+)

Author: M-Z, Wang, K, Abe, T, Abe, I, Adachi, H, Aihara, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, A, Bay, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, M-C, Chang, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, P H, Chu, A, Chuvikov, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, G, Gokhroo, B, Golob, T, Hara, H, Hayashii, M, Hazumi, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, J H, Kang, N, Katayama, H, Kawai, T, Kawasaki, H, Kichimi, H J, Kim, Hyunwoo, Kim, J H, Kim, S K, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, A, Kuzmin, Y-J, Kwon, J S, Lange, S H, Lee, T, Lesiak, A, Limosani, S-W, Lin, J, MacNaughton, G, Majumder, F, Mandl, T, Matsumoto, W, Mitaroff, H, Miyake, H, Miyata, T, Nagamine, Y, Nagasaka, E, Nakano, S, Nishida, O, Nitoh, S, Ogawa, T, Ohshima, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, H, Palka, C W, Park, H, Park, N, Parslow, L E, Piilonen, M, Rozanska, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, O, Schneider, A J, Schwartz, S, Semenov, H, Shibuya, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, Y, Teramoto, T, Tomura, T, Tsuboyama, T, Tsukamoto, S, Uehara, S, Uno, G, Varner, K E, Varvell, C H, Wang, J G, Wang, Y, Watanabe, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, H, Yanai, J, Ying, Y, Yuan, Y, Yusa, C C, Zhang, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We report the first observation of a b--u type charmless baryonic B decay, B+--pppi(+), as well as b--s type B0--ppK0 and B+--ppK(*+) decays. The analysis is based on a 78 fb(-1) data sample recorded on the Upsilon(4S) resonance with the Belle detector at KEKB. We find B(B+--pppi(+))=(3.06(+0.73)(-0.62)+/-0.37)x10(-6), B(B0--ppK0)=(1.88(+0.77)(-0.60)+/-0.23)x10(-6), and B(B+--ppK(*+))=(10.3(+3.6+1.3)(-2.8-1.7))x10(-6). We also update B(B+--ppK+)=(5.66(+0.67)(-0.57)+/-0.62)x10(-6) and present an upper limit on B(B0--ppK(*0)) at the 90% confidence level. A common feature of the observed decay modes is threshold peaking in baryon pair invariant mass.
Published: 2003

187. Observation of B--K*l+l

Author: A, Ishikawa, K, Abe, T, Abe, I, Adachi, Byoung Sup, Ahn, H, Aihara, K, Akai, M, Akatsu, M, Akemoto, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, A, Bay, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, A, Chuvikov, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, J, Flanagan, C, Fukunaga, Y, Funakoshi, K, Furukawa, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, R, Guo, J, Haba, C, Hagner, F, Handa, H, Hayashii, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, Y B, Hsiung, H-C, Huang, T, Iijima, K, Inami, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, J H, Kang, J S, Kang, N, Katayama, H, Kawai, T, Kawasaki, H, Kichimi, E, Kikutani, H J, Kim, Hyunwoo, Kim, J H, Kim, S K, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, D, Liventsev, J, MacNaughton, G, Majumder, F, Mandl, M, Masuzawa, T, Matsumoto, A, Matyja, S, Michizono, T, Mimashi, W, Mitaroff, K, Miyabayashi, H, Miyake, H, Miyata, D, Mohapatra, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, T T, Nakamura, M, Nakao, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, Y, Ogawa, K, Ohmi, Y, Ohnishi, T, Ohshima, N, Ohuchi, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, H, Park, N, Parslow, L S, Peak, L E, Piilonen, N, Root, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, M, Satapathy, A, Satpathy, O, Schneider, J, Schümann, C, Schwanda, A J, Schwartz, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, H, Shibuya, T, Shidara, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, S K, Swain, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, M, Tawada, G N, Taylor, Y, Teramoto, T, Tomura, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, S, Uno, G, Varner, C C, Wang, C H, Wang, J G, Wang, M-Z, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, H, Yanai, Heyoung, Yang, J, Ying, M, Yoshida, Y, Yusa, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We report the observation of the flavor-changing neutral current decay B--K(*)l(+)l(-) and an im-proved measurement of the decay B--Kl(+)l(-), where l represents an electron or a muon, with a data sample of 140 fb(-1) accumulated at the Upsilon(4S) resonance with the Belle detector at KEKB. The results for the branching fractions are B(B--K(*)l(+)l(-))=(11.5(+2.6)(-2.4)+/-0.8+/-0.2)x10(-7) and B(B--Kl(+)l(-))=(4.8(+1.0)(-0.9)+/-0.3+/-0.1)x10(-7), where the first error is statistical, the second is systematic and the third is from model dependence.
Published: 2003

188. Observation of a narrow charmoniumlike state in exclusive B+/---K+/-pi+pi-J/psi decays

Author: S-K, Choi, S L, Olsen, K, Abe, T, Abe, I, Adachi, Byoung Sup, Ahn, H, Aihara, K, Akai, M, Akatsu, M, Akemoto, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, S, Banerjee, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, Y, Choi, Y K, Choi, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, J, Flanagan, C, Fukunaga, K, Furukawa, N, Gabyshev, T, Gershon, B, Golob, H, Guler, R, Guo, C, Hagner, F, Handa, T, Hara, N C, Hastings, H, Hayashii, M, Hazumi, L, Hinz, Y, Hoshi, W-S, Hou, Y B, Hsiung, H-C, Huang, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, M, Iwasaki, Y, Iwasaki, J H, Kang, S U, Kataoka, N, Katayama, H, Kawai, T, Kawasaki, H, Kichimi, E, Kikutani, H J, Kim, Hyunwoo, Kim, J H, Kim, S K, Kim, K, Kinoshita, H, Koiso, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, S, Kumar, A, Kuzmin, J S, Lange, G, Leder, S H, Lee, T, Lesiak, S-W, Lin, D, Liventsev, J, MacNaughton, G, Majumder, F, Mandl, D, Marlow, T, Matsumoto, S, Michizono, T, Mimashi, W, Mitaroff, K, Miyabayashi, H, Miyake, D, Mohapatra, G R, Moloney, T, Nagamine, Y, Nagasaka, T, Nakadaira, T T, Nakamura, M, Nakao, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, Y, Ogawa, K, Ohmi, Y, Ohnishi, T, Ohshima, N, Ohuchi, K, Oide, T, Okabe, S, Okuno, W, Ostrowicz, H, Ozaki, H, Palka, H, Park, N, Parslow, L E, Piilonen, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, M, Satapathy, A, Satpathy, O, Schneider, A J, Schwartz, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, H, Shibuya, T, Shidara, B, Shwartz, V, Sidorov, N, Soni, S, Stanic, M, Staric, A, Sugiyama, T, Sumiyoshi, S, Suzuki, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, M, Tawada, G N, Taylor, Y, Teramoto, T, Tomura, K, Trabelsi, T, Tsukamoto, S, Uehara, K, Ueno, Y, Unno, S, Uno, G, Varner, K E, Varvell, C C, Wang, C H, Wang, J G, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, H, Yanai, Heyoung, Yang, J, Ying, M, Yoshida, C C, Zhang, Z P, Zhang, and D, Zontar
Abstract: We report the observation of a narrow charmoniumlike state produced in the exclusive decay process B+/---K+/-pi(+)pi(-)J/psi. This state, which decays into pi(+)pi(-)J/psi, has a mass of 3872.0+/-0.6(stat)+/-0.5(syst) MeV, a value that is very near the M(D0)+M(D(*0)) mass threshold. The results are based on an analysis of 152M B-Bmacr; events collected at the Upsilon(4S) resonance in the Belle detector at the KEKB collider. The signal has a statistical significance that is in excess of 10sigma.
Published: 2003

189. Evidence for B0--pi0pi0

Author: S H, Lee, K, Suzuki, K, Abe, T, Abe, I, Adachi, Byoung Sup, Ahn, H, Aihara, K, Akai, M, Akatsu, M, Akemoto, Y, Asano, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, S, Banerjee, A, Bay, I, Bedny, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, A, Chuvikov, M, Danilov, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, J, Flanagan, C, Fukunaga, K, Furukawa, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, R, Guo, J, Haba, C, Hagner, F, Handa, N C, Hastings, H, Hayashii, M, Hazumi, I, Higuchi, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, Y, Igarashi, T, Iijima, H, Ikeda, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, H, Kakuno, J H, Kang, J S, Kang, P, Kapusta, S U, Kataoka, N, Katayama, H, Kawai, T, Kawasaki, H, Kichimi, E, Kikutani, H J, Kim, Hyunwoo, Kim, J H, Kim, S K, Kim, K, Kinoshita, H, Koiso, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, T, Lesiak, J, Li, A, Limosani, S-W, Lin, D, Liventsev, J, MacNaughton, F, Mandl, D, Marlow, M, Masuzawa, T, Matsumoto, A, Matyja, S, Michizono, T, Mimashi, W, Mitaroff, H, Miyake, H, Miyata, D, Mohapatra, G R, Moloney, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, T T, Nakamura, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, Y, Ogawa, K, Ohmi, Y, Ohnishi, T, Ohshima, N, Ohuchi, K, Oide, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, C W, Park, H, Park, K S, Park, N, Parslow, L S, Peak, M, Peters, L E, Piilonen, N, Root, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, M, Satapathy, A, Satpathy, O, Schneider, J, Schümann, C, Schwanda, A J, Schwartz, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, H, Shibuya, T, Shidara, B, Shwartz, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, R, Sugahara, A, Sugi, K, Sumisawa, T, Sumiyoshi, S, Suzuki, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, M, Tawada, G N, Taylor, Y, Teramoto, T, Tomura, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, Y, Unno, S, Uno, G, Varner, K E, Varvell, C C, Wang, C H, Wang, J G, Wang, M-Z, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, H, Yanai, Heyoung, Yang, M, Yoshida, Y, Yusa, S L, Zang, J, Zhang, Z P, Zhang, Y, Zheng, V, Zhilich, D, Zontar, and D, Zürcher
Abstract: We report evidence for the decay B0--pi(0)pi(0). The analysis is based on a data sample of 152x10(6) BBmacr; pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. We detect a signal for B0--pi(0)pi(0) with a significance of 3.4 standard deviations, and measure the branching fraction to be [1.7+/-0.6(stat)+/-0.2(syst)]x10(-6).
Published: 2003

190. Observation of radiative B--phi K gamma decays

Author: A, Drutskoy, K, Abe, T, Abe, H, Aihara, M, Akatsu, Y, Asano, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, A, Bay, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, B C K, Casey, Y, Chao, B G, Cheon, R, Chistov, Y, Choi, A, Chuvikov, M, Danilov, M, Dash, L Y, Dong, S, Eidelman, V, Eiges, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, J, Haba, C, Hagner, F, Handa, N C, Hastings, H, Hayashii, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, H K, Jang, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, T, Kawasaki, H, Kichimi, D W, Kim, H J, Kim, Hyunwoo, Kim, J H, Kim, S K, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, Y-J, Kwon, S H, Lee, T, Lesiak, J, Li, J, MacNaughton, D, Marlow, T, Matsumoto, A, Matyja, W, Mitaroff, H, Miyata, D, Mohapatra, G R, Moloney, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, M, Nakao, J W, Nam, Z, Natkaniec, S, Nishida, O, Nitoh, S, Ogawa, T, Ohshima, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, H, Palka, C W, Park, H, Park, K S, Park, N, Parslow, M, Peters, L E, Piilonen, N, Root, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, A, Satpathy, O, Schneider, J, Schümann, A J, Schwartz, S, Semenov, K, Senyo, M E, Sevior, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugi, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, F, Takasaki, N, Tamura, M, Tanaka, Y, Teramoto, T, Tomura, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, S, Uno, G, Varner, K E, Varvell, C H, Wang, J G, Wang, M-Z, Wang, Y, Watanabe, E, Won, Y, Yamada, Y, Yamashita, M, Yamauchi, Y, Yuan, Y, Yusa, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: The radiative decay B--phi K gamma is observed for the first time. The branching fraction for the charged B---phi K- gamma decay mode is measured to be B(B---phi K- gamma)=(3.4+/-0.9+/-0.4)x10(-6). The photon energy distribution for the B---phi K- gamma decay is presented. The signal for the neutral B(0)--phi K(0)gamma decay mode is not statistically significant and an upper limit, B(B(0)--phi K(0)gamma)8.3x10(-6) at 90% C.L., is set. The analysis is based on a data set of 90 fb(-1) collected by the Belle experiment at the e(+)e(-) asymmetric collider KEKB.
Published: 2003

191. Improved measurement of the partial-rateCPasymmetry inB+→K0π+andB−→K0π−decays

Author: Y. Unno, K. Suzuki, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, S. Banerjee, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, F. Handa, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, H. Matsumoto, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, L. E. Piilonen, N. Root, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, A. J. Schwartz, T. Seki, S. Semenov, K. Senyo, M. E. Sevior, T. Shibata, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, J. G. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, C. C. Zhang, J. Zhang, Z. P. Zhang, Y. Zheng, D. Žontar, and D. Zürcher
Subjects: Physics, Nuclear and High Energy Physics, Nuclear magnetic resonance, KEKB, media_common.quotation_subject, Resonance, Asymmetry, Storage ring, media_common
Abstract: We report an improved measurement of the partial-rate CP asymmetry in B±→K0π± decays. The analysis is based on a data sample of 85×106 BB pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e +e- storage ring. We measure ACP(K 0π±) = 0.07-0.08 +0.09 +0.03 +0.01, where the first and second errors are statistical and systematic, respectively; the corresponding 90% confidence-level interval is -0.10
Published: 2003

192. Observation of B-/+--rho-/+rho0 decays

Author: J, Zhang, M, Nakao, K, Abe, T, Abe, I, Adachi, H, Aihara, M, Akatsu, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, S, Bahinipati, A M, Bakich, Y, Ban, E, Banas, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, B C K, Casey, P, Chang, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, M, Danilov, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, A, Gordon, R, Guo, F, Handa, T, Hara, N C, Hastings, H, Hayashii, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, Y B, Hsiung, H-C, Huang, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, M, Iwasaki, Y, Iwasaki, H K, Jang, J H, Kang, J S, Kang, S U, Kataoka, N, Katayama, H, Kawai, N, Kawamura, T, Kawasaki, D W, Kim, H J, Kim, Hyunwoo, Kim, J H, Kim, S K, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, G, Leder, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, D, Liventsev, J, MacNaughton, G, Majumder, F, Mandl, D, Marlow, H, Matsumoto, T, Matsumoto, A, Matyja, W, Mitaroff, K, Miyabayashi, H, Miyata, D, Mohapatra, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, J W, Nam, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, H, Park, K S, Park, N, Parslow, J-P, Perroud, L E, Piilonen, M, Rozanska, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, A, Satpathy, O, Schneider, J, Schümann, C, Schwanda, A J, Schwartz, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, T, Shibata, H, Shibuya, V, Sidorov, J B, Singh, S, Stanic, M, Staric, A, Sugi, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, S K, Swain, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, G N, Taylor, Y, Teramoto, T, Tomura, S N, Tovey, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, S, Uno, G, Varner, K E, Varvell, C C, Wang, C H, Wang, J G, Wang, M-Z, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, H, Yanai, Heyoung, Yang, Y, Yusa, Z P, Zhang, Y, Zheng, V, Zhilich, D, Zontar, and D, Zürcher
Abstract: We report the first observation of the charmless vector-vector decay process B-/+--rho(-/+)rho(0). The measurement uses a 78 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider operating at the Upsilon(4S) resonance. We obtain a branching fraction of B(B-/+--rho(-/+)rho(0))=[31.7+/-7.1(stat)+3.8-6.7(syst)]x10(-6). An analysis of the rho helicity-angle distributions gives a longitudinal polarization fraction of Gamma(L)/Gamma=0.95+/-0.11(stat)+/-0.02(syst). We also measure the direct-CP-violating asymmetry A(CP)(B-/+--rho(-/+)rho(0))=0.00+/-0.22(stat)+/-0.03(syst).
Published: 2003

193. Evidence for B--phiphiK

Author: H-C, Huang, K, Abe, T, Abe, I, Adachi, H, Aihara, M, Akatsu, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, E, Banas, A, Bay, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, B C K, Casey, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, Y, Choi, Y K, Choi, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, R, Guo, J, Haba, F, Handa, T, Hara, N C, Hastings, H, Hayashii, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, Y B, Hsiung, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, Y, Iwasaki, H K, Jang, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, N, Kawamura, T, Kawasaki, H, Kichimi, D W, Kim, H J, Kim, Hyunwoo, Kim, J H, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, Y-J, Kwon, G, Leder, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, D, Liventsev, J, MacNaughton, G, Majumder, F, Mandl, D, Marlow, H, Matsumoto, T, Matsumoto, W, Mitaroff, H, Miyata, G R, Moloney, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, M, Nakao, H, Nakazawa, J W, Nam, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, H, Park, K S, Park, N, Parslow, J-P, Perroud, M, Peters, L E, Piilonen, M, Rozanska, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, A, Satpathy, O, Schneider, J, Schümann, C, Schwanda, A J, Schwartz, T, Seki, S, Semenov, M E, Sevior, T, Shibata, H, Shibuya, V, Sidorov, J B, Singh, S, Stanic, M, Staric, A, Sugi, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, T, Tomura, S N, Tovey, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, S, Uno, G, Varner, K E, Varvell, C C, Wang, C H, Wang, J G, Wang, M-Z, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, A, Yamaguchi, Y, Yamashita, M, Yamauchi, H, Yanai, Heyoung, Yang, Y, Yusa, C C, Zhang, Z P, Zhang, Y, Zheng, V, Zhilich, and D, Zontar
Abstract: We report evidence for the decay mode B--phiphiK based on an analysis of 78 fb(-1) of data collected with the Belle detector at KEKB. This is the first example of a b--sssss transition. The branching fraction for this decay is measured to be B(B+/---phiphiK+/-)=(2.6(+1.1)(-0.9)+/-0.3)x10(-6) for a phiphi invariant mass below 2.85 GeV/c(2). Results for other related charmonium decay modes are also reported.
Published: 2003

194. Observation ofB¯0→D0K¯0andB¯0→D0K¯*0Decays

Author: P. Krokovny, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, I. Bedny, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, J. Haba, T. Hara, K. Hasuko, H. Hayashii, M. Hazumi, I. Higuchi, T. Higuchi, T. Hojo, Y. Hoshi, W.-S. Hou, H.-C. Huang, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, J. Kaneko, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, Y. Kawakami, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. Kobayashi, P. Koppenburg, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, M. Peters, L. E. Piilonen, M. Rozanska, K. Rybicki, H. Sagawa, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, J. Schümann, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: General Physics and Astronomy
Published: 2003

195. Studies of the DecayB±→DCPK±

Author: K. Abe, N. Abe, R. Abe, T. Abe, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, M.-C. Chang, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, H. Fujii, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, N. Katayama, Y. Kawakami, 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, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, 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, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, J. L. Rodriguez, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, P. Yeh, Y. Yuan, Y. Yusa, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle decay, Particle physics, KEKB, Branching fraction, Electron–positron annihilation, Hadron, Analytical chemistry, Pi, General Physics and Astronomy, CP violation, B meson
Abstract: We report studies of the Cabibbo-suppressed decay B+/- --> DCPK+/-, where D-CP denotes CP eigenstates of the D-0 - (D) over bar (0) system. The analysis is based on a 29.1 fb(-1) sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. We measure ratios of branching fractions, relative to Cabibbo-favored B+/--->D(CP)pi+/-, of B>(B- --> D1K-)/B(B- --> D(1)pi(-)) = 0.125 +/-0.036 +/- 0.010 and B(B- --> D2K-)/B(B- --> D(2)pi(-)) = 0.119 +/- 0.028 +/- 0.006; the index 1 (2) denotes the CP = +1 (-1) eigenstate. We also extract the partial rate asymmetries for B+/- --> DCPK+/-, finding A(1) = 0.29 +/- 0.26 +/- 0.05 and A(2) = -0.22 +/- 0.24 +/- 0.04.
Published: 2003

196. Observation of the DecayB¯0→Λc+p¯

Author: N. Gabyshev, H. Kichimi, K. Abe, R. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, A. Bay, I. Bedny, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, M.-C. Chang, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, C. Fukunaga, A. Garmash, T. Gershon, B. Golob, J. Haba, C. Hagner, F. Handa, T. Hara, K. Hasuko, H. Hayashii, M. Hazumi, I. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, D. W. Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, S.-W. Lin, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, L. E. Piilonen, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, J. Schümann, A. J. Schwartz, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, Y. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Baryon, Physics, Particle physics, KEKB, Branching fraction, General Physics and Astronomy, Resonance, Lambda
Abstract: We report the measurement of the charmed baryonic decay ${\overline{B}}^{0}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}^{+}\overline{p}$ with a branching fraction of $({2.19}_{\ensuremath{-}0.49}^{+0.56}\ifmmode\pm\else\textpm\fi{}0.32\ifmmode\pm\else\textpm\fi{}0.57)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ and a statistical significance of $5.8\text{ }\ensuremath{\sigma}$. The errors are statistical, systematic, and the error of the ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}p{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ decay branching fraction. This is the first observation of a two-body baryonic $B$ decay. The analysis is based on $78.2\text{ }{\mathrm{f}\mathrm{b}}^{\ensuremath{-}1}$ of data accumulated at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric ${e}^{+}{e}^{\ensuremath{-}}$ collider.
Published: 2003

197. Studies ofB0−B0mixing properties with inclusive dilepton events

Author: N. C. Hastings, K. Abe, R. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, A. Bay, I. Bedny, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, M.-C. Chang, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, J. Haba, C. Hagner, F. Handa, T. Hara, K. Hasuko, H. Hayashii, M. Hazumi, I. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, S.-W. Lin, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, L. E. Piilonen, F. J. Ronga, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, J. Schümann, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, M. Yokoyama, Y. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, KEKB, Resonance, B meson, Measure (mathematics), Mixing (physics)
Abstract: We report a precise determination of the Z0-B0 mixing parameter Δmd based on the time evolution of same-sign and opposite-sign dilepton yields in Y(45) decays. Data were collected with the Belle detector at KEKB. Using data samples of 29.4 fb-1 recorded at the γ(4S) resonance and 3.0 fb-1 recorded at an energy 60 MeV below the resonance, we measure Δmd=[0.503±0.008(stat) ±0.010(syst)] ps-1. From the same analysis, we also measure the ratio of charged and neutral B meson production at the γ(4S), f +/f0= 1-01 ±0.03(stat)±0.09(syst), and CPT violation parameters in B0-B0 mixing, (cos θ)=0.00±0.12(stat) ±0.01(syst) and ℑ(cos θ)=0.03±0.01(stat)±0.03(syst). © 2003 The American Physical Society.
Published: 2003

198. Study of time-dependentCP-violating asymmetries inb→sq¯qdecays

Author: K. Abe, T. Abe, I. Adachi, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, J. Haba, K. Hara, H. Hayashii, M. Hazumi, T. Higuchi, T. Hojo, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. Kaneko, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, Y. Kawakami, T. Kawasaki, H. Kichimi, M. Kikuchi, E. Kikutani, D. W. Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. Kobayashi, H. Koiso, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, S. Michizono, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, J. Mueller, T. Nagamine, Y. Nagasaka, T. Nakadaira, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, Y. Ogawa, Y. Ohnishi, T. Ohshima, N. Ohuchi, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, J.-P. Perroud, L. E. Piilonen, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, A. Satpathy, O. Schneider, S. Schrenk, J. Schümann, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, Y. Ushiroda, S. E. Vahsen, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, M. Yokoyama, M. Yoshida, Y. Yuan, Y. Yusa, Z. P. Zhang, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Elementary particle, Nuclear physics, Particle decay, KEKB, CP violation, High Energy Physics::Experiment, B meson
Abstract: We present a measurement of CP-violation parameters in the b→sqq penguin transitions (q = s,u,d) based on a 78 fb-1 data sample collected at the Y(4S) resonance with the Belle detector at the KEKB energyasymmetric e+e- collider. One neutral B meson is reconstructed in the φKS 0, K+K -KS 0, or η′ KS 0 decay channel, and the flavor of the accompanying B meson is identified from its decay products. CP violation parameters for each of the three modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. © 2003 The American Physical Society.
Published: 2003

199. Measurement of Branching Fractions forB→ηcK(*)Decays

Author: F. Fang, T. Hojo, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, A. M. Bakich, Y. Ban, E. Banas, A. Bay, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, Y. Kawakami, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, F. Mandl, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, K. S. Park, J.-P. Perroud, M. Peters, L. E. Piilonen, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, N. Soni, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, T. Takahashi, F. Takasaki, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, Y. Ushiroda, S. E. Vahsen, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, J. Yashima, M. Yokoyama, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, Electron–positron annihilation, General Physics and Astronomy, CP violation, Branching (polymer chemistry)
Abstract: We report measurements of branching fractions for charged and neutral $B\ensuremath{\rightarrow}{\ensuremath{\eta}}_{c}K$ decays where the ${\ensuremath{\eta}}_{c}$ meson is reconstructed in the ${K}_{S}^{0}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}$, ${K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$, ${K}^{*0}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, and $p\overline{p}$ decay channels. The neutral ${B}^{0}$ channel is a $CP$ eigenstate and can be used to measure the $CP$ violation parameter $\mathrm{sin} 2{\ensuremath{\varphi}}_{1}$. We also report the first observation of the ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\eta}}_{c}{K}^{*0}$ mode. The results are based on an analysis of $29.1\text{ }{\mathrm{f}\mathrm{b}}^{\ensuremath{-}1}$ of data collected by the Belle detector at KEKB.
Published: 2003

200. Measurement of the Electroweak Penguin ProcessB→Xsℓ+ℓ−

Author: J. Kaneko, K. Abe, T. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, W. Bartel, A. Bay, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, R. Guo, J. Haba, F. Handa, T. Hara, Y. Harada, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, T. Hojo, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, J.-P. Perroud, M. Peters, L. E. Piilonen, N. Root, K. Rybicki, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, H. Tajima, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, K. Trabelsi, W. Trischuk, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, J. Yashima, M. Yokoyama, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, Strange quark, Muon, Branching fraction, Electron–positron annihilation, Hadron, Electroweak interaction, General Physics and Astronomy, Nuclear physics, KEKB, High Energy Physics::Experiment, B meson, Nuclear Experiment
Abstract: We report the first measurement of the branching fraction for the inclusive decay B → X s l + l - , where l is either an electron or a muon, and X s is a hadronic recoil system that contains an s quark. We analyzed a data sample of 65.4 x 10 6 B meson pairs collected with the Belle detector at the KEKB e + e - asymmetric-energy collider. We find B(B → X s l + l - ) = [6.1 ′ 1.4(stat) + 1 . 4 - 1 . 1 (syst)] × 10 - 6 for dilepton masses greater than 0.2 GeV/c 2 .
Published: 2003

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