Author: "V. Eiges" - Searchworks@Jio Institute Digital Library Search Results

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213 results on '"V. Eiges"'

101. Measurements of the $D_{sJ}$ resonance properties

Author: G. R. Moloney, Mika Masuzawa, S. Uehara, Patrick Koppenburg, G. Leder, Y. Iwasaki, Y. J. Kwon, Gobinda Majumder, Hiroyuki Iwasaki, H. Palka, L. E. Piilonen, N. Katayama, T. Aushev, Masashi Hazumi, Norihito Ohuchi, Z. Natkaniec, R. Kulasiri, F. Mandl, M. H. Tanaka, T. Tsukamoto, M. E. Sevior, Hiroyuki Sagawa, W. Ostrowicz, S. Bahinipati, T. Matsumoto, T. Iijima, H. Miyata, Y. Hoshi, Y. Sakai, B. Golob, O. Schneider, R. Chistov, J. Ying, V.A. Sidorov, M. Yamauchi, D. Žontar, K. Trabelsi, P. Krokovny, Kazuro Furukawa, T. Sumiyoshi, H. J. Kim, A. Garmash, H. Park, Y. Yamashita, Y. Mikami, K. Ohmi, J. MacNaughton, W. S. Hou, Eiji Kikutani, H. Kawai, Heyoung Yang, Byung Gu Cheon, O. Nitoh, K. Senyo, Jung-Hyun Kim, K. S. Park, T. Nagamine, Yasushi Nagasaka, T. Hokuue, H. C. Huang, N. Kawamura, T. Kawasaki, S. Stanič, M. Iwasaki, N. Parslow, B. Shwartz, Chikara Fukunaga, A. Matyja, S. L. Olsen, Hiroaki Aihara, K. Inami, Ryuhei Sugahara, J. Dragic, Y. Chao, D. Liventsev, Yasuhiko Yamada, H. Shibuya, Tetsuo Shidara, Zhenyu Zhang, Toshihiro Mimashi, A. Bondar, Y. Watanabe, V. Eiges, A. Sugi, H. Kichimi, I. Bizjak, G. S. Varner, H. Yanai, M. Bračko, L. Y. Dong, Hirokazu Ikeda, S. K. Choi, C. W. Park, Tsukasa Aso, T. Abe, T. Tsuboyama, T. Lesiak, S. Uno, C. Schwanda, K. Kinoshita, S. Saitoh, S. Ogawa, T. J. Gershon, Kazuo Abe, B. D. Yabsley, T. Hara, Hitoshi Yamamoto, Y. Asano, P. Kapusta, Katsunobu Oide, M. Akemoto, S. Okuno, A. M. Bakich, T. Ohshima, E. Nakano, A. Chuvikov, M. Yoshida, S. Y. Suzuki, N. Gabyshev, I. Higuchi, A. Yamaguchi, K. Sumisawa, Jasvinder A. Singh, S. W. Lin, L. Hinz, M. Nakao, Y. Teramoto, Masafumi Tawada, T. Okabe, H. Hayashii, H. Ozaki, V.N. Zhilich, S. H. Lee, T. Tomura, J. H. Kang, S. Semenov, W. A. Mitaroff, Young-Il Choi, N. Soni, A. Ishikawa, A. Bay, Y. Ban, T. Nozaki, F. Takasaki, P. Križan, M. Starič, J. S. Kang, H. Nakazawa, G. Gokhroo, Y. Ogawa, Y. Yusa, S. Eidelman, A. J. Schwartz, F. Handa, S. Nishida, Y. Choi, A.S. Kuzmin, T. E. Browder, Takashi Nakamura, M. Danilov, P. Pakhlov, and A. Bozek
Subjects: Physics, Crystallography, High Energy Physics - Experiment (hep-ex), Radiative decay, General Physics and Astronomy, Resonance, FOS: Physical sciences, High Energy Physics::Experiment, Continuum (set theory), Nuclear Experiment, High Energy Physics - Experiment
Abstract: We report measurements of the properties of the $D_{sJ}^+(2317)$ and $D_{sJ}^+(2457)$ resonances produced in continuum $e^+ e^-$ annihilation near $\sqrt{s}=10.6 \mathrm{GeV}$. The analysis is based on an $86.9 \mathrm{fb^{-1}}$ data sample collected %at and 60 MeV below the $\Upsilon(4S)$ resonance with with the Belle detector at KEKB. We determine the masses to be $M(D_{sJ}^+(2317)) = 2317.2 \pm 0.5(\mathrm{stat}) \pm 0.9(\mathrm{syst}) \mathrm{MeV}/c^2$ and $M(D_{sJ}^+(2457))=2456.5 \pm 1.3(\mathrm{stat}) \pm 1.3(\mathrm{syst}) \mathrm{MeV}/c^2$. We observe the radiative decay mode $D_{sJ}^+(2457) \to D_s^+ \gamma$ and the dipion decay mode $D_{sJ}^+(2457) \to D_s^+ \pi^+ \pi^-$, and determine their branching fractions. No corresponding decays are observed for the $D_{sJ}(2317)$ state. These results are consistent with the spin-parity assignments of $0^+$ for the $D_{sJ}(2317)$ and $1^+$ for the $D_{sJ}(2457)$., Comment: 5 pages, 6 figures; Added content, updated and paper submitted to PRL
Published: 2003

102. Evidence forCP-violating asymmetries inB0→π+π−decays and constraints on the CKM angleφ2

Author: K. Abe, N. Abe, T. Abe, I. Adachi, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, 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, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, C. W. Everton, J. Flanagan, C. Fukunaga, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, C. Hagner, K. Hara, N. C. Hastings, K. Hasuko, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, G. Katano, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, M. Kikuchi, E. Kikutani, D. W. Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, T. Kubo, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, S.-W. Lin, J. MacNaughton, F. Mandl, D. Marlow, S. Matsumoto, T. Matsumoto, S. Michizono, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, A. Murakami, Y. Nagasaka, T. Nakadaira, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakayama, J. W. Nam, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, Y. Ogawa, K. Ohmi, Y. Ohnishi, T. Ohshima, N. Ohuchi, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, M. Peters, 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, C. Schwanda, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, R. Sugahara, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, N. Uozaki, 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, H. Yamamoto, Y. Yamashita, M. Yamauchi, M. Yokoyama, M. Yoshida, C. C. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, media_common.quotation_subject, High Energy Physics::Phenomenology, Monte Carlo method, Resonance (particle physics), Asymmetry, law.invention, Nuclear physics, KEKB, law, CP violation, High Energy Physics::Experiment, B meson, Collider, media_common
Abstract: We present an improved measurement of CP-violating asymmetries in B 0→π+π- decays based on a 78 fb -1 data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We reconstruct one neutral B meson as a B0→π+π - CP eigenstate and identify the flavor of the accompanying B meson from inclusive properties of its decay products. We apply an unbinned maximum likelihood fit to the distribution of the time intervals between the two B meson decay points. The fit yields the CP-violating asymmetry amplitudes A ππ= +0.77 ±0.27(stat) ±0.08(syst) and S ππ=-1.23 ±0.41(stat) -0.07 +0.08(syst), where the statistical uncertainties are determined from the Monte Carlo pseudoexperiments. We obtain confidence intervals for CP-violating asymmetry parameters Aππ and Sππ based on a frequentist approach. We rule out the CP-conserving case, A ππ=Sππ=0, at the 99.93% confidence level. We discuss how these results constrain the value of the Cabibbo-Kobayashi-Maskawa (CKM) angle φ2. © 2003 The American Physical Society.
Published: 2003

103. 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

104. 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

105. Observation ofB0→pΛ¯π−

Author: M.-Z. Wang, Y.-J. Lee, K. Abe, T. Abe, H. Aihara, M. Akatsu, Y. Asano, T. Aso, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, A. Bay, 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, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, A. Drutskoy, S. Eidelman, V. Eiges, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, C. Hagner, T. Hara, M. Hazumi, 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, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, J. H. Kim, K. Kinoshita, S. Kobayashi, P. Krokovny, A. Kuzmin, Y.-J. Kwon, S. H. Lee, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, 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, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Park, K. S. Park, M. Peters, L. E. Piilonen, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, J. Schümann, A. J. Schwartz, S. Semenov, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, T. Sumiyoshi, S. Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, Y. Yamashita, M. Yamauchi, H. Yanai, P. Yeh, Z. P. Zhang, and D. Žontar
Subjects: Physics, Nuclear magnetic resonance, KEKB, Branching fraction, Electron–positron annihilation, Pi, General Physics and Astronomy, Resonance
Abstract: We report the first observation of the charmless hyperonic B decay, B0-->pLambda(pi)(-), using a 78 fb(-1) data sample recorded on the Upsilon(4S) resonance with the Belle detector at KEKB. The measured branching fraction is B(B0-->pLambda(pi)(-))=(3.97(+1.00)(-0.80)+/-0.56)x10(-6). Searches for B0-->pLambda(K)- and pSigma(0)pi(-) yield no significant signals and we set 90% confidence-level upper limits of B(B0-->pLambda(K)-) pSigma(0)pi(-))
Published: 2003

106. Measurement of theB0−B0mixing rate withB0(B0)→D*∓π±partial reconstruction

Author: Y. Zheng, T. E. Browder, K. Abe, R. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, B. C. K. Casey, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, C. Hagner, F. Handa, T. Hara, N. C. Hastings, K. Hasuko, M. Hazumi, E. M. Heenan, I. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, Y. Igarashi, T. Iijima, K. Inami, H. Ishino, H. Iwasaki, M. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, S. U. Kataoka, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, 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. Krokovny, A. Kuzmin, Y.-J. Kwon, G. Leder, S. H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, S. Matsumoto, T. Matsumoto, W. Mitaroff, Y. 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, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, C. W. Park, H. Park, K. S. Park, J.-P. Perroud, L. E. Piilonen, F. J. Ronga, K. Rybicki, H. Sagawa, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, R. Seuster, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, N. Soni, 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, S. Tokuda, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, 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, M. Yamauchi, H. Yanai, M. Yokoyama, Y. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, Resonance, Charge (physics), law.invention, KEKB, law, High Energy Physics::Experiment, Collider, Lepton, Bar (unit)
Abstract: We report a measurement of the $B^0-\bar{B}^0$ mixing parameter $\Delta m_d$ based on a $\rm 29.1~fb^{-1}$ sample of $\Upsilon (4S)$ resonance decays collected by the Belle detector at the KEKB asymmetric $e^+ e^-$ collider. We use events with a partially reconstructed $B^0(\bar{B}^0) \to D^{*\mp} \pi^{\pm}$ candidate and where the flavor of the accompanying $B$ meson is identified by the charge of the lepton from a $B^0(\bar{B}^0) \to X^{\mp} \ell^{\pm} \nu$ decay. The proper-time difference between the two $B$ mesons is determined from the distance between the two decay vertices. From a simultaneous fit to the proper-time distributions for the same-flavor ($B^0(\bar{B}^0)$, $\ell^{\pm}$) and opposite-flavor ($B^0(\bar{B}^0)$, $\ell^{\mp}$) event samples, we measure the mass difference between the two mass eigenstates of the neutral $B$ meson to be $\Delta m_d$= $(0.509 \pm 0.017~(\rm stat) \pm 0.020~(\rm syst))~ps^{-1}$.
Published: 2003

107. 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

108. 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

109. 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

110. 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

111. 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

112. 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

113. 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

114. Study of B meson decays to three-body charmless hadronic final states

Author: A. Garmash, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, 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, S.-K. Choi, Y. Choi, A. Chuvikov, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, C. Fukunaga, N. Gabyshev, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, C. Hagner, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, I. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, Y. Igarashi, T. Iijima, K. Inami, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, S. K. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, G. Leder, S. H. Lee, J. Li, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, H. Matsumoto, A. Matyja, W. Mitaroff, H. Miyata, G. R. Moloney, T. Mori, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, 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, L. E. Piilonen, M. Rozanska, 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, 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, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, H. Yanai, Y. Yuan, Y. Yusa, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics - Experiment (hep-ex), KEKB, Hadron, CP violation, FOS: Physical sciences, B meson, High Energy Physics - Experiment
Abstract: We report results of a study of charmless B meson decays to three-body KPiPi, KKPi and KKK final states. Measurements of branching fractions for B decays to K+0Pi+Pi-, K+K+K-, K0K+K-, KsKsK+ and KsKsKs final states are presented. The decays B0=>K0K+K-, B+=>KsKsK+ and B0=>KsKsKs are observed for the first time. We also report evidence for B+=>K+K-Pi+ decay. For the three-body final states K0K+K-, KsKsPi+, K+K+Pi- and K-Pi+Pi+ 90% confidence level upper limits are reported. Finally, we discuss the possibility of using the three-body B0=>KsK+K- decay for CP violation studies. The results are obtained with a 78 fb^-1 data sample collected at the Y(4S) resonance by the Belle detector operating at the KEKB asymmetric energy e+e- collider., 15 pages, 6 figures. To be submitted to PRD
Published: 2003
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115. Observation of the decay B0--lambda+cp

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, Bracko, 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, Krizan, 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, Stanic, M, Staric, 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, Zontar
Abstract: We report the measurement of the charmed baryonic decay B(0)--Lambda(+)(c)p with a branching fraction of (2.19(+0.56)(-0.49)+/-0.32+/-0.57)x10(-5) and a statistical significance of 5.8 sigma. The errors are statistical, systematic, and the error of the Lambda(+)(c)--pK(-)pi(+) decay branching fraction. This is the first observation of a two-body baryonic B decay. The analysis is based on 78.2 fb(-1) of data accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) collider.
Published: 2002

116. Measurement of theB0−B¯0Mixing ParameterΔmdusing SemileptonicB0Decays

Author: K. Hara, M. Hazumi, 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, 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, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, K. Hanagaki, F. Handa, T. Hara, N. C. Hastings, H. Hayashii, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, S.-C. Hsu, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, H. Kakuno, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, Hyunwoo 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, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, T. Matsuishi, S. Matsumoto, T. Matsumoto, K. Miyabayashi, Y. Miyabayashi, 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, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, 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, M. Yokoyama, Y. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, High Energy Physics::Lattice, High Energy Physics::Phenomenology, General Physics and Astronomy, Resonance, law.invention, Distribution (mathematics), KEKB, law, High Energy Physics::Experiment, B meson, Collider, Mixing (physics)
Abstract: We present a measurement of the B0-Bmacr;(0) mixing parameter Deltam(d) using neutral B meson pairs in a 29.1 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We exclusively reconstruct one neutral B meson in the semileptonic B0-->D(*-)l(+)nu decay mode and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two flavor-tagged B meson decay points, we obtain Deltam(d)=(0.494+/-0.012+/-0.015) ps(-1), where the first error is statistical and the second error is systematic.
Published: 2002

117. Measurement of Branching Fractions and Charge Asymmetries for Two-Body B Meson Decays with Charmonium

Author: Y. Kawakami, Y. Iwasaki, Y. J. Kwon, O. Schneider, H. K. Jang, J. W. Nam, D. Liventsev, T. Hojo, T. Iijima, T. Nakadaira, Frederic Jean Ronga, I. Bizjak, G. S. Varner, V.A. Sidorov, Masashi Yokoyama, Y. Ban, Masashi Hazumi, D. Žontar, Tsukasa Aso, S. Noguchi, K. Kinoshita, S. Saitoh, P. Pakhlov, G. N. Taylor, Kai-Feng Chen, T. Aushev, B. C. K. Casey, K. Rybicki, K. Senyo, S. U. Kataoka, S. Uno, R. Abe, C. Schwanda, A. Satpathy, O. Nitoh, N. Soni, E. Nakano, T. E. Browder, R. Itoh, Hiroaki Aihara, H. O. Kim, I. Adachi, N. Tamura, S. Ogawa, Gobinda Majumder, Hiroyuki Iwasaki, A. Yamaguchi, T. Tsukamoto, Meng Wang, H. Park, A. Bozek, H. Miyata, J. S. Kang, Prafulla Kumar Behera, N. C. Hastings, Semen Eidelman, T. Takahashi, A. Drutskoy, A. Ishikawa, A. Bay, H. Yanai, Y. Sakai, S. Y. Suzuki, Byung Gu Cheon, S. Kobayashi, T. Abe, T. Nozaki, F. Takasaki, P. Križan, Alexander Bondar, S. Nishida, K. Sumisawa, J. H. Kang, Rong-Shyang Lu, L. Hinz, B. Golob, H. Kichimi, T. Hokuue, Samo Korpar, M. Danilov, Shaji Kumar, W. S. Hou, Kevin Varvell, J. Dragic, C. C. Wang, Yasuhiko Yamada, Ascelin Gordon, M. Akatsu, S. Uehara, L. Y. Dong, Y. Hoshi, C. W. Park, E. Won, Y. Chao, Daniel Robert Marlow, T. Mori, Rolf Seuster, S. L. Olsen, S. K. Kim, H. Palka, L. E. Piilonen, R. Kulasiri, J. MacNaughton, Hyun Woo Kim, T. Kawasaki, R. Chistov, Y. Choi, T. Sumiyoshi, A. M. Bakich, Z. P. Zhang, P. Krokovny, J. B. Singh, T. Matsumoto, S. K. Choi, A. Sugi, I. Higuchi, T. J. Gershon, J. Haba, D. W. Kim, Y. Watanabe, T. Tsuboyama, K. Inami, Hyunyong Kim, G. Leder, Y. Onuki, F. Mandl, K. Tamai, S. Matsumoto, M. Satapathy, Kazuo Abe, Y. Asano, P. Kapusta, S. Okuno, Chikara Fukunaga, Y. Teramoto, Bruce Yabsley, T. Okabe, H. Shibuya, J. Tanaka, V. Eiges, Y. Yamashita, H. Ozaki, S. Schrenk, T. Nagamine, H. C. Huang, S. Semenov, W. A. Mitaroff, J. G. Wang, W. Ostrowicz, M. D. Peters, P. Chang, K. Miyabayashi, C. H. Wang, S. H. Lee, Jolanta Brodzicka, M. Starič, M. H. Tanaka, Hiroyuki Sagawa, T. Tomura, H. Nakazawa, J. Li, N. Katayama, A. Garmash, H. Kawai, Z. Natkaniec, T. Ohshima, N. Gabyshev, You-Jin Yuan, M. Bračko, and Samo Stanič
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Branching fraction, Hadron, High Energy Physics::Phenomenology, FOS: Physical sciences, Quarkonium, J/psi meson, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), KEKB, CP violation, B meson, High Energy Physics::Experiment
Abstract: We report branching fractions and charge asymmetries for exclusive decays of charged and neutral B mesons to two-body final states containing a charmonium meson, J/psi or psi(2S). This result is based on a 29.4 fb^{-1} data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider., 13 pages, 5 figures, revtex
Published: 2002

118. Observation ofDs+K−and Evidence forDs+π−Final States in NeutralBDecays

Author: P. Krokovny, 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, 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, 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, A. Gordon, R. Guo, J. Haba, K. Hanagaki, F. Handa, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Igaki, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, H. K. Jang, J. Kaneko, 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, 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, H. Nakazawa, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, J.-P. Perroud, M. Peters, L. E. Piilonen, F. J. Ronga, N. Root, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, C. Schwanda, S. Semenov, K. Senyo, 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, T. Tomura, 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, J. Yashima, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear magnetic resonance, KEKB, Annihilation, Branching fraction, Electron–positron annihilation, Pi, Analytical chemistry, General Physics and Astronomy, Value (computer science), B meson
Abstract: We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel B(0)-->D(+)(s)K- is found in a sample of 85 x 10(6) BB; events, collected with the Belle detector at KEKB, with a branching fraction B(B(0)-->D(+)(s)K-)=(4.6(+1.2)(-1.1)+/-1.3) x 10(-5). We also obtain evidence for the B0-->D(+)(s)pi(-) decay with branching fraction B(B0-->D(+)(s)pi(-))=(2.4(+1.0)(-0.8)+/-0.7) x 10(-5). This value may be used to extract a model-dependent value of |V(ub)|.
Published: 2002

119. RadiativeBMeson Decays intoKπγandKππγFinal States

Author: S. Nishida, M. Nakao, K. Abe, T. Abe, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, W. Bartel, A. Bay, I. Bedny, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, T. Gershon, A. Gordon, K. Gotow, R. Guo, J. Haba, T. Hara, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, P. Jalocha, H. K. Jang, J. H. Kang, P. Kapusta, S. U. Kataoka, 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, T. H. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, S. Matsumoto, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, S. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, J. W. Nam, Z. Natkaniec, K. Neichi, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, F. Ohno, 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, M. Peters, L. E. Piilonen, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, 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, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, 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, H. Yamamoto, Y. Yamashita, M. Yamauchi, Y. Yuan, Y. Yusa, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, General Physics and Astronomy
Published: 2002

120. Improved measurement of mixing-inducedCPviolation in the neutralBmeson system

Author: K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, 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, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, K. Gotow, R. Guo, J. Haba, K. Hanagaki, F. Handa, K. Hara, T. Hara, Y. Harada, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, 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, H. Kakuno, J. Kaneko, 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, K. Kinoshita, S. Kobayashi, K. Korotushenko, S. Korpar, P. Križan, P. Krokovny, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, 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, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, J.-P. Perroud, L. E. Piilonen, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, 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, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, H. Tajima, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, K. Trabelsi, W. Trischuk, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, N. Uozaki, 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, H. Yamamoto, Y. Yamashita, M. Yamauchi, H. Yanai, J. Yashima, P. Yeh, M. Yokoyama, Y. Yuan, Y. Yusa, H. Yuta, C. C. Zhang, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, High Energy Physics::Phenomenology, FOS: Physical sciences, Resonance, High Energy Physics - Experiment, Standard Model, High Energy Physics - Experiment (hep-ex), KEKB, Mixing (mathematics), CP violation, High Energy Physics::Experiment, B meson
Abstract: We present an improved measurement of the standard model CP violation parameter sin2phi_1 (also known as sin2beta) based on a sample of 85 times 10^6 B Bbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. One neutral B meson is reconstructed in a J/psi K_S, psi(2S) K_S, chi_{c1} K_S, eta_c K_S, J/psi K^{*0}, or J/psi K_L CP-eigenstate decay channel and the flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time interval between the two B meson decay points, we obtain sin2phi_1 = 0.719 +/- 0.074(stat) +/- 0.035(syst)., Comment: 10 pages, 3 figures, 3 tables, accepted for publication in PRD Rapid Communications
Published: 2002

121. Observation ofB±→ωK±Decay

Author: R.-S. Lu, K. Abe, N. Abe, R. Abe, T. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, I. Bedny, 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, 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, C. W. Everton, C. Fukunaga, N. Gabyshev, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, S.-C. Hsu, 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, P. Kapusta, S. U. Kataoka, 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, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, G. Leder, S. H. Lee, J. Li, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, 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, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, N. Root, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, 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, K. Suzuki, S. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, 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, Y. Yamashita, M. Yamauchi, P. Yeh, Y. Yuan, J. Zhang, Z. P. Zhang, Y. Zheng, and D. Žontar
Subjects: Physics, General Physics and Astronomy
Published: 2002

122. Observation of Doublecc¯Production ine+e−Annihilation ats≈10.6 GeV

Author: J. Kaneko, S. E. Vahsen, K. Sumisawa, K. Hoshina, S. K. Swain, T. Hokuue, Ascelin Gordon, H. J. Kim, H. Ozaki, A. Bondar, L. Y. Dong, K. Neichi, J. P. Perroud, F. Ohno, E. Won, Jolanta Brodzicka, M. D. Peters, Zhenyu Zhang, O. Nitoh, S. Stanič, Ho Kim, L. S. Peak, N. Kawamura, S. H. Lee, T. J. Gershon, T. Igaki, Chikara Fukunaga, T. Ohshima, Masashi Hazumi, J. W. Nam, M. H. Tanaka, Heejong Kim, T. Mori, N. C. Hastings, Byoung Sup Ahn, M. Starič, D. Liventsev, T. Aushev, Hiroyuki Sagawa, T. Hojo, J. S. Kang, S. Uno, C. Schwanda, Hiroaki Aihara, B. C. K. Casey, T. Tomura, G. S. Varner, S. R. Hou, T. Takahashi, O. Schneider, T. Iijima, S. Nishida, V.N. Zhilich, R. Itoh, Ju Hwan Kang, Y. Unno, T. Matsumoto, C. W. Park, N. Katayama, S. Semenov, Y. Choi, J. Li, C. C. Wang, Seong Keun Kim, E. Nakano, V.A. Sidorov, Y. Kawakami, S.I. Eidelman, Tsukasa Aso, Rolf Seuster, S. K. Choi, V.M. Aulchenko, Y. Yusa, P. Krokovny, Rong-Shyang Lu, M. Akatsu, Y. Iwasaki, I. Adachi, Y. Igarashi, M. Iwamoto, T. E. Browder, W. S. Hou, Y. J. Kwon, S. Suzuki, Yong Ban, K. Kinoshita, M. Yamauchi, H. Miyata, Prafulla Kumar Behera, H. K. Jang, N. Tamura, R. Abe, A. Yamaguchi, R. Guo, Jasvinder A. Singh, Gobinda Majumder, Hiroyuki Iwasaki, Y. Hoshi, K. Inami, D. W. Kim, M. Danilov, Z. Natkaniec, T. Tsukamoto, Hyunwoo Kim, S. Tokuda, Y. Sakai, Y. Teramoto, K. S. Park, H. Miyake, T.H. Kim, S. Noguchi, F. Handa, P. Pakhlov, A. Satpathy, Byung Gu Cheon, S. L. Olsen, J. Yashima, J. Dragic, A. Bozek, A.S. Kuzmin, N. Gabyshev, Yasuhiko Yamada, G. R. Moloney, H. Hayashii, You-Jin Yuan, A. Drutskoy, A. Sugi, S. Ogawa, M. Z. Wang, S. Saitoh, H. Palka, L. E. Piilonen, A. Sugiyama, H. Yanai, G. N. Taylor, J. S. Lange, R. Kulasiri, Sadaharu Uehara, T. Kawasaki, A. M. Bakich, R. Chistov, T. Sumiyoshi, A. Ishikawa, A. Bay, J. MacNaughton, T. Nozaki, F. Takasaki, W. Trischuk, A. Garmash, H. K. Park, Y. Harada, H. Kawai, Y. Onuki, Y. Yamashita, Suneel Kumar, K. Senyo, S. N. Tovey, Yasushi Nagasaka, M. Bračko, D. Žontar, E. M. Heenan, Kei Suzuki, Kevin Varvell, G. Leder, T. Nagamine, H. C. Huang, F. Mandl, K. Tamai, M. E. Sevior, S. Matsumoto, M. Satapathy, K. Ueno, W. Bartel, Y. Watanabe, Yuji Enari, H. Kichimi, T. Tsuboyama, I. Higuchi, M. Nakao, H. Shibuya, V. Eiges, Y. Chao, S. Schrenk, W. Ostrowicz, J. G. Wang, N.I. Root, P. Chang, C. H. Wang, Kazuo Abe, B. D. Yabsley, T. Hara, Y. Asano, P. Kapusta, S. Okuno, T. Abe, Takuya Higuchi, Elzbieta Banas, and T. Okabe
Subjects: Physics, Crystallography, Particle physics, KEKB, Annihilation, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, General Physics and Astronomy, High Energy Physics::Experiment, Production (computer science), Continuum (set theory), Open charm
Abstract: We report the observation of prompt $J/\ensuremath{\psi}$ via double $c\overline{c}$ production from the ${e}^{+}{e}^{\ensuremath{-}}$ continuum. In this process one $c\overline{c}$ pair fragments into a $J/\ensuremath{\psi}$ meson while the remaining pair either produces a charmonium state or fragments into open charm. Both cases have been experimentally observed. We find cross sections of $\ensuremath{\sigma}[{e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\eta}}_{c}(\ensuremath{\gamma})]\ifmmode\times\else\texttimes\fi{}\mathcal{B}({\ensuremath{\eta}}_{c}\ensuremath{\rightarrow}\ensuremath{\ge}4\text{ }\text{ }\mathrm{\text{charged}})=({0.033}_{\ensuremath{-}0.006}^{+0.007}\ifmmode\pm\else\textpm\fi{}0.009)\text{ }\text{ }\mathrm{p}\mathrm{b}$ and $\ensuremath{\sigma}({e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}{D}^{*+}X)=({0.53}_{\ensuremath{-}0.15}^{+0.19}\ifmmode\pm\else\textpm\fi{}0.14)\text{ }\text{ }\mathrm{p}\mathrm{b}$ and infer $\ensuremath{\sigma}({e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}c\overline{c})/\ensuremath{\sigma}({e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}X)={0.59}_{\ensuremath{-}0.13}^{+0.15}\ifmmode\pm\else\textpm\fi{}0.12$. These results are obtained from a $46.2\text{ }\text{ }{\mathrm{f}\mathrm{b}}^{\ensuremath{-}1}$ data sample collected near the $\ensuremath{\Upsilon}(4S)$ resonance, with the Belle detector at the KEKB collider.
Published: 2002

123. Publisher’s Note: Observation of theηc(2S)in ExclusiveB→KKSK−π+Decays [Phys. Rev. Lett89, 102001 (2002)]

Author: S.-K. Choi, S. L. Olsen, K. Abe, R. 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, A. Bay, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, Y. 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, A. Gordon, R. Guo, F. Handa, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, J. Kaneko, J. H. Kang, J. S. Kang, P. Kapusta, 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, T. H. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, S. Matsumoto, T. Matsumoto, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, S. Semenov, K. Senyo, M. E Sevior, H. Shibuya, B. Shwartz, 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, S. N. Tovey, 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, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, General Physics and Astronomy
Published: 2002

124. Measurement of branching fractions for B--eta(c)K(*) 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, Bracko, 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, Krizan, 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, Stanic, M, Staric, 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, Zontar
Abstract: We report measurements of branching fractions for charged and neutral B--eta(c)K decays where the eta(c) meson is reconstructed in the K(0)(S)K+/-pi(-/+), K+K-pi(0), K(*0)K-pi(+), and pp; decay channels. The neutral B0 channel is a CP eigenstate and can be used to measure the CP violation parameter sin(2phi(1). We also report the first observation of the B0--eta(c)K(*0) mode. The results are based on an analysis of 29.1 fb(-1) of data collected by the Belle detector at KEKB.
Published: 2002

125. Study of Exclusive B decays to Charmed Baryons

Author: N. Gabyshev, H. Kichimi, K. 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, 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, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, A. Garmash, T. Gershon, B. Golob, J. Haba, T. Hara, H. Hayashii, M. Hazumi, E. M. Heenan, T. Higuchi, L. Hinz, T. Hojo, 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, 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, G. Majumder, 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, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, J.-P. Perroud, M. Peters, L. E. Piilonen, F. J. Ronga, N. Root, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, C. Schwanda, A. Schwartz, 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, T. Takahashi, F. Takasaki, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, 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, H. Yanai, J. Yashima, Y. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Charmed baryons, Nuclear and High Energy Physics, Crystallography, High Energy Physics - Experiment (hep-ex), KEKB, Branching fraction, Electron–positron annihilation, FOS: Physical sciences, High Energy Physics - Experiment
Abstract: Using 29.1fb-1 of data accumulated at the Upsilon(4S) with the Belle detector at KEKB, we have studied the decay modes B0bar->Lambda_c+ pbar pi+pi-, B- -> Lambda_c+ pbar pi-, and B0bar ->Lambda_c+ pbar. We report branching fractions of exclusive B decays to charmed baryons with four-, three- and two-body final states, including intermediate Sigma_c++ and Sigma_c0 states. We observed B0bar -> Sigma_c(2455)++pbar pi- for the first time with a branching fraction of (2.38+0.63-0.55+-0.41+-0.62)x10-4 and observed evidence for the two-body decay B- ->Sigma_c(2455)0 pbar with a branching fraction of (0.45+0.26-0.19+-0.07+-0.12)x10-4. We also set improved upper limits for the two-body decays B0bar -> Lambda_c+ pbar and B- -> Sigma_c(2520)0 pbar., accepted for publication in Phys. Rev. D
Published: 2002

126. Observation of theηc(2S)in ExclusiveB→KKSK−π+Decays

Author: S.-K. Choi, S. L. Olsen, K. Abe, R. 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, A. Bay, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, Y. 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, A. Gordon, R. Guo, F. Handa, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, J. Kaneko, J. H. Kang, J. S. Kang, P. Kapusta, 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, T. H. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, S. Matsumoto, T. Matsumoto, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, 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, S. N. Tovey, 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, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, Electron–positron annihilation, General Physics and Astronomy, High Energy Physics::Experiment, State (functional analysis), Atomic physics
Abstract: We report the observation of a narrow peak in the ${K}_{S}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ invariant mass distribution in a sample of exclusive $B\ensuremath{\rightarrow}K{K}_{S}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ decays collected with the Belle detector at the KEKB asymmetric ${e}^{+}{e}^{\ensuremath{-}}$ collider. The measured mass of the peak is $M=3654\ifmmode\pm\else\textpm\fi{}6(\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t})\ifmmode\pm\else\textpm\fi{}8(\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t})\text{ }\text{ }\mathrm{M}\mathrm{e}\mathrm{V}/{c}^{2}$, and we place a 90% confidence level upper limit on the width of $\ensuremath{\Gamma}l55\text{ }\text{ }\mathrm{M}\mathrm{e}\mathrm{V}/{c}^{2}$. The properties agree with heavy-quark potential model expectations for the ${\ensuremath{\eta}}_{c}(2S)$ meson, the $n=2$ singlet $S$ charmonium state.
Published: 2002

127. Measurement of the electroweak penguin process B--X(s)l+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, Bracko, 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, Krizan, 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, Stanic, 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, Zontar
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)] x 10(-6) for dilepton masses greater than 0.2 GeV/c(2).
Published: 2002

128. Observation of D+(s)K- and evidence for D+(s)pi- final states in neutral B decays

Author: P, Krokovny, 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, A, Bay, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, 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, 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, A, Gordon, R, Guo, J, Haba, K, Hanagaki, F, Handa, Y, Harada, H, Hayashii, M, Hazumi, E M, Heenan, T, Higuchi, L, Hinz, T, Hojo, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, T, Igaki, T, Iijima, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, H, Iwasaki, H K, Jang, J, Kaneko, 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, Krizan, 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, H, Nakazawa, J W, Nam, Z, Natkaniec, K, Neichi, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S L, Olsen, Y, Onuki, W, Ostrowicz, H, Ozaki, P, Pakhlov, C W, Park, H, Park, J-P, Perroud, M, Peters, L E, Piilonen, F J, Ronga, N, Root, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, H, Sakamoto, M, Satapathy, A, Satpathy, O, Schneider, C, Schwanda, S, Semenov, K, Senyo, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, S, Stanic, M, Staric, 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, T, Tomura, 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, J, Yashima, Y, Yuan, Y, Yusa, C C, Zhang, J, Zhang, Z P, Zhang, Y, Zheng, V, Zhilich, and D, Zontar
Abstract: We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel B(0)--D(+)(s)K- is found in a sample of 85 x 10(6) BB; events, collected with the Belle detector at KEKB, with a branching fraction B(B(0)--D(+)(s)K-)=(4.6(+1.2)(-1.1)+/-1.3) x 10(-5). We also obtain evidence for the B0--D(+)(s)pi(-) decay with branching fraction B(B0--D(+)(s)pi(-))=(2.4(+1.0)(-0.8)+/-0.7) x 10(-5). This value may be used to extract a model-dependent value of |V(ub)|.
Published: 2002

129. Charmless Hadronic Two-Body B Meson Decays

Author: H. Kichimi, S. Saitoh, Z. Natkaniec, G. Varner, R. Guo, M. Tomoto, S. Okuno, P. Križan, T. Aso, K. Suzuki, T. E. Browder, S. C. Hsu, Alexander E. Bondar, T. Tomura, M. E. Sevior, N. Tamura, T. Takahashi, S. Suzuki, B. D. Yabsley, T. Matsumoto, A. Ishikawa, A. Bay, D. Žontar, T. Nagamine, N. Katayama, J. H. Kang, H. Kawai, D. Marlow, M. Rozanska, N. Gabyshev, B. C.K. Casey, F. Handa, H. K. Jang, Prafulla Kumar Behera, T. Mori, T. Ohshima, M. Akatsu, H. Hayashii, H. Ozaki, S. Stanič, T. Sumiyoshi, I. Bedny, A. Murakami, Z. P. Zhang, H. Sakamoto, C. W. Park, T. H. Kim, M. Starič, T. Hara, K. Inami, K. Sumisawa, A. Sugi, N. Kawamura, J. B. Singh, Andrzej Bozek, Y. J. Kwon, T. Gershon, W. S. Hou, Kai-Feng Chen, K. Kinoshita, M. Hazumi, N. C. Hastings, E. M. Heenan, D. W. Kim, S. Uehara, Y. Ushiroda, V. Aulchenko, J. Haba, S. Schrenk, M. Danilov, Y. Yamada, K. Rybicki, S. Noguchi, Y. Choi, T. Tsuboyama, H. Palka, S. Nishida, E. Nakano, H. Yanai, Y. Iwasaki, G. N. Taylor, K. Miyabayashi, M. Satapathy, Y. Nagasaka, K. Senyo, S. Semenov, Li Jingyuan, H. Shibuya, N. Soni, S. H. Lee, K. Trabelsi, R. S. Lu, S. K. Choi, H. Park, F. Mandl, Y. Kawakami, Heejong Kim, A. Garmash, S. Tokuda, T. Nakadaira, S. L. Olsen, V. Zhilich, Y. Enari, M. Bračko, C. C. Wang, A. Yamaguchi, S. Kumar, H. Sagawa, I. Higuchi, H. J. Kim, Y. Asano, J. Brodzicka, B. Shwartz, P. Chang, Y. Igarashi, S. Ogawa, Y. Sakai, Minoru Tanaka, S. Matsumoto, J. G. Wang, R. Chistov, Samo Korpar, T. Abe, T. Okabe, A. Sugiyama, T. Iijima, J. Dragic, K. E. Varvell, J. S. Lange, Byung Gu Cheon, Y. Hoshi, L. S. Peak, R. Seuster, Meng Wang, Y. Yusa, C. Fukunaga, G. Majumder, M. Peters, P. Krokovny, V. Eiges, H. C. Huang, T. Aushev, G. R. Moloney, Masashi Yokoyama, E. Won, A. M. Bakich, L. Hinz, O. Schneider, J. S. Kang, T. Tsukamoto, T. Nozaki, A. Satpathy, Y. Watanabe, Y. Teramoto, A. Gordon, Hyunwoo Kim, C. H. Wang, T. Matsuishi, M. Yamauchi, Y. K. Choi, F. Fang, J. P. Perroud, L. Y. Dong, I. Bizjak, Y. Miyabayashi, C. Schwanda, H. Miyata, J. Tanaka, L. E. Piilonen, K. Ueno, R. Itoh, H. Aihara, I. Adachi, O. Nitoh, B. Golob, S. Eidelman, M. Nakao, N. Root, Byoung Sup Ahn, Y. Ban, J. W. Nam, S. Y. Suzuki, J. MacNaughton, A. Kuzmin, T. Higuchi, Y. Chao, G. Leder, K. Abe, R. Kulasiri, Y. Onuki, W. Ostrowicz, Y. Yamashita, H. Iwasaki, T. Igaki, S. Uno, Y. Unno, Y. Yuan, and F. Takasaki
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, Hadron, FOS: Physical sciences, Resonance, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Pion, KEKB, CP violation, B meson
Abstract: We report the results of a study of two-body B meson decays to the complete set of K pi, pi pi, and K K final states. The study is performed on a data sample of 31.7 +/- 0.3 million B B-bar events recorded on the Upsilon(4S) resonance by the Belle experiment at KEKB. We observe significant signals in all K pi final states and in the pi+ pi- and pi+ pi0 final states. We set limits on the pi0 pi0 and K K final states. A search is performed for partial-rate asymmetries between conjugate states for flavor-specific final states., Submitted to PRD
Published: 2002

130. Study ofCP-Violating Asymmetries inB0→π+π−Decays

Author: 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, I. Bedny, S. Behari, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, M. Danilov, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, M. Fukushima, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, D. J. Jackson, P. Jalocha, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, S. K. Kim, T. H. Kim, K. Kinoshita, S. Koishi, H. Konishi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, A. Limosani, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, S. Mori, T. Mori, A. Murakami, 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, F. Ohno, 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, M. Peters, L. E. Piilonen, E. Prebys, J. L. Rodriguez, F. J. Ronga, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, H. Tajima, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, W. Trischuk, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, J. Yashima, P. Yeh, M. Yokoyama, K. Yoshida, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, General Physics and Astronomy, Resonance, High Energy Physics::Experiment
Abstract: We present a measurement of $CP$-violating asymmetries in ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays based on a $41.8\text{ }{\mathrm{f}\mathrm{b}}^{\ensuremath{-}1}$ data sample collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. We fully reconstruct one neutral $B$ meson as a ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ $CP$ eigenstate and identify the flavor of the accompanying $B$ meson from its decay products. From the asymmetry in the distribution of the time intervals between the two $B$ meson decay points, we obtain the $CP$-violating asymmetry parameters ${\mathcal{S}}_{\ensuremath{\pi}\ensuremath{\pi}}=\ensuremath{-}{1.21}_{\ensuremath{-}0.27}^{+0.38}(\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t}{)}_{\ensuremath{-}0.13}^{+0.16}(\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t})$ and ${\mathcal{A}}_{\ensuremath{\pi}\ensuremath{\pi}}=+{0.94}_{\ensuremath{-}0.31}^{+0.25}(\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t})\ifmmode\pm\else\textpm\fi{}0.09(\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t})$.
Published: 2002

131. Measurement of the B(0)-B(0) mixing parameter Deltam(d) using semileptonic B0 decays

Author: K, Hara, M, Hazumi, 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, A, Bay, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, 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, S, Eidelman, V, Eiges, Y, Enari, C W, Everton, F, Fang, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, R, Guo, J, Haba, K, Hanagaki, F, Handa, T, Hara, N C, Hastings, H, Hayashii, E M, Heenan, I, Higuchi, T, Higuchi, L, Hinz, Y, Hoshi, W-S, Hou, Y B, Hsiung, S-C, Hsu, H-C, Huang, T, Igaki, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, Y, Iwasaki, H K, Jang, H, Kakuno, J H, Kang, J S, Kang, N, Katayama, H, Kawai, Y, Kawakami, N, Kawamura, H, Kichimi, D W, Kim, Heejong, Kim, H J, Kim, Hyunwoo, Kim, T H, Kim, K, Kinoshita, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, J, Li, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, T, Matsuishi, S, Matsumoto, T, Matsumoto, K, Miyabayashi, Y, Miyabayashi, 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, H, Palka, C W, Park, H, Park, L S, Peak, J-P, Perroud, M, Peters, L E, Piilonen, N, Root, M, Rozanska, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, H, Sakamoto, M, Satapathy, A, Satpathy, O, Schneider, S, Schrenk, C, Schwanda, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, H, Shibuya, B, Shwartz, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, S Y, Suzuki, T, Takahashi, F, Takasaki, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, M, Tomoto, T, Tomura, 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, M, Yokoyama, Y, Yuan, Y, Yusa, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We present a measurement of the B0-Bmacr;(0) mixing parameter Deltam(d) using neutral B meson pairs in a 29.1 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We exclusively reconstruct one neutral B meson in the semileptonic B0--D(*-)l(+)nu decay mode and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two flavor-tagged B meson decay points, we obtain Deltam(d)=(0.494+/-0.012+/-0.015) ps(-1), where the first error is statistical and the second error is systematic.
Published: 2002

132. Observation of B+/- --omegaK+/- decay

Author: R-S, Lu, K, Abe, N, Abe, R, Abe, T, Abe, I, Adachi, H, Aihara, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, E, Banas, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, 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, C W, Everton, C, Fukunaga, N, Gabyshev, T, Gershon, B, Golob, A, Gordon, R, Guo, J, Haba, T, Hara, Y, Harada, H, Hayashii, M, Hazumi, E M, Heenan, T, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, S-C, Hsu, 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, P, Kapusta, S U, Kataoka, 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, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, G, Leder, S H, Lee, J, Li, D, Liventsev, J, MacNaughton, G, Majumder, F, Mandl, 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, F, Ohno, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, H, Park, L S, Peak, J-P, Perroud, M, Peters, L E, Piilonen, N, Root, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, M, Satapathy, A, Satpathy, O, Schneider, S, Schrenk, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, H, Shibuya, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, M, Tomoto, T, Tomura, S N, Tovey, K, Trabelsi, 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, Y, Yamashita, M, Yamauchi, P, Yeh, Y, Yuan, J, Zhang, Z P, Zhang, Y, Zheng, and D, Zontar
Abstract: We report the first observation of the charmless two-body mode B+/---omegaK+/- decay, and a new measurement of the branching fraction for the B+/---omegapi(+/-) decay. The measured branching fractions are B(B+/---omegaK+/-)=(9.2(+2.6)(-2.3)+/-1.0)x10(-6) and B(B+/---omegapi(+/-))=(4.2(+2.0)(-1.8)+/-0.5)x10(-6). We also measure the partial rate asymmetry of B+/---omegaK+/- decays and obtain A(CP)=-0.21+/-0.28+/-0.03. The results are based on a data sample of 29.4 fb(-1) collected on the Upsilon(4S) resonance by the Belle detector at the KEKB e(+)e(-) collider.
Published: 2002

133. Studies of the decay B+/- --D(CP)K+

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, Bracko, 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, Krizan, 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, Stanic, M, Staric, 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, Zontar
Abstract: We report studies of the Cabibbo-suppressed decay B+/---D(CP)K+/-, where D(CP) denotes CP eigenstates of the D0-D0; system. The analysis is based on a 29.1 fb(-1) sample collected at the Upsilon(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---D1pi(-))=0.125+/-0.036+/-0.010 and B(B---D2K-)/B(B---D2pi(-))=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+/---D(CP)K+/-, finding A(1)=0.29+/-0.26+/-0.05 and A(2)=-0.22+/-0.24+/-0.04.
Published: 2002

134. Observation ofχc2Production inBMeson Decay

Author: K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, S. Behari, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, M. Fukushima, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, K. Gotow, R. Guo, J. Haba, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S. R. Hou, W.-S. Hou, H.-C. Huang, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, D. J. Jackson, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, S. K. Kim, T. H. Kim, K. Kinoshita, H. Konishi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, A. Limosani, D. Liventsev, R.-S. Lu, J. MacNaughton, F. Mandl, D. Marlow, S. Matsumoto, T. Matsumoto, Y. Mikami, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, G. F. Moorhead, S. Mori, T. Mori, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. S. Park, C. W. Park, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, F. Ronga, N. Root, M. Rozanska, K. Rybicki, J. Ryuko, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, J. B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, M. Yokoyama, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, Branching fraction, General Physics and Astronomy
Abstract: We report the first observation of ${\ensuremath{\chi}}_{c2}$ production in $B$ meson decays. We find an inclusive $B\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c2}X$ branching fraction of $({1.80}_{\ensuremath{-}0.28}^{+0.23}\ifmmode\pm\else\textpm\fi{}0.26)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$. The data set, collected with the Belle detector at the KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider, consists of $31.9\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ events. We also present branching fractions and momentum spectra for both ${\ensuremath{\chi}}_{c1}$ and ${\ensuremath{\chi}}_{c2}$ production.
Published: 2002

135. Observation of the decay B(0)--D(+/-)D(*-/+)

Author: Heejong Kim, J. Kaneko, J. Tanaka, Kazuo Abe, B. D. Yabsley, J. S. Kang, Y. Asano, P. Kapusta, S. Tokuda, Z. Natkaniec, P. Krokovny, Y. Watanabe, S.N. Tovey, H. Kichimi, J. B. Singh, S. L. Olsen, H. Ozaki, S. K. Choi, K. Neichi, T. Tsuboyama, S. H. Lee, Y. Ushiroda, R. Guo, N. Gabyshev, You-Jin Yuan, N. Tamura, T. Aushev, Takuya Higuchi, M. Danilov, S. Okuno, W. Ostrowicz, P. Chang, T. J. Gershon, T. Iijima, T. Nakadaira, Jie Zhang, Y. Teramoto, F. Handa, T. Igaki, K. Senyo, Elzbieta Banas, K. Ueno, S. Stanič, V.A. Sidorov, S. R. Hou, E. Nakano, T. E. Browder, T. Hara, T. Tsukamoto, Y. J. Kwon, Hiroaki Aihara, N.I. Root, K. Tamai, H. O. Kim, M. E. Sevior, A. Yamaguchi, J. W. Nam, Hyun Woo Kim, C. W. Park, M. Iwamoto, D. Liventsev, S. Uno, C. Schwanda, Y. Iwasaki, T. Hojo, S. Nishida, Y. Kawakami, D. Žontar, S. Matsumoto, R. Itoh, Gobinda Majumder, Hiroyuki Iwasaki, M. Yamauchi, Y. Choi, R. Abe, M. Satapathy, J. Yashima, G. S. Varner, E. M. Heenan, P. Pakhlov, Sadaharu Uehara, A. Satpathy, T. Hokuue, T. Nozaki, J. P. Perroud, Masashi Yokoyama, G. R. Moloney, V. M. Aulchenko, H. Park, Y. Ban, A. Bozek, C. H. Wang, Y. Yusa, Y. Sakai, A. Drutskoy, D. W. Kim, T. Tomura, M. Nakao, A. Garmash, K. Trabelsi, H. Kawai, Byung Gu Cheon, Y. Yamashita, Chikara Fukunaga, Yasushi Nagasaka, I. Bedny, J. Li, C. C. Wang, S. Schrenk, T. Nagamine, H. C. Huang, Ascelin Gordon, L. Y. Dong, F. Ohno, Y. Hoshi, E. Won, H. Sagawa, B. Golob, J. S. Lange, H. Shibuya, V. Eiges, L. E. Piilonen, R. Kulasiri, T. Kawasaki, H. Miyata, R. Chistov, A. Ishikawa, A. Bay, F. Takasaki, Alexander Bondar, F. J. Ronga, Y. Yamada, A. Sugiyama, Semen Eidelman, T. Sumiyoshi, Takayoshi Ohshima, K. E. Varvell, A. M. Bakich, Y. Chao, N. Katayama, S. E. Vahsen, A. Sugi, H. Fujii, S. Ogawa, V.N. Zhilich, O. Schneider, S. Semenov, L. S. Peak, S. K. Swain, K. Rybicki, K. Miyabayashi, S. Korpar, Jolanta Brodzicka, M. H. Tanaka, S. K. Kim, Yuji Enari, M. Starič, Z. P. Zhang, T. Matsumoto, O. Nitoh, K. Kinoshita, Y. Unno, Hyunyong Kim, S. Saitoh, G. N. Taylor, H. Hayashii, J. MacNaughton, T. Mori, H. Yanai, W. S. Hou, T. Abe, S. Y. Suzuki, K. Sumisawa, L. Hinz, A. Kuzmin, Masashi Hazumi, J. H. Kang, H. Miyake, Prafulla Kumar Behera, T.H. Kim, and M. Akatsu
Subjects: Physics, KEKB, Pion, Meson, Analytical chemistry, General Physics and Astronomy, Resonance, Reconstruction method, High Energy Physics - Experiment
Abstract: We report the first observation of the decay B^0->D+-D*-+ with the Belle detector at the KEKB e^+e^- collider operated at the Upsilon(4S) resonance. The sum of branching fractions B(B^0->D+D*-)+B(B^0->D-D*+) is measured to be (1.17+-0.26+0.22-0.25)x10^-3 using the full reconstruction method where both charmed mesons from B^0 decays are reconstructed. A consistent value ((1.48+-0.38+0.28-0.31)x10^-3) is obtained using a partial reconstruction technique that only uses the slow pion from the D*- ->bar D^0pi- decay and a fully reconstructed D+ to reconstruct the B^0., Comment: 10 pages, 3 figures
Published: 2002

136. Observation of double cć production in e+e- annihilation at squareroot[s] approximately 10.6 GeV

Author: K, Abe, R, 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, Bracko, J, Brodzicka, T E, Browder, B C K, Casey, P, Chang, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, 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, Y, Harada, N C, Hastings, H, Hayashii, M, Hazumi, E M, Heenan, I, Higuchi, T, Higuchi, T, Hojo, T, Hokuue, Y, Hoshi, K, Hoshina, S R, Hou, W-S, Hou, H-C, Huang, T, Igaki, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, M, Iwamoto, H, Iwasaki, Y, Iwasaki, H K, Jang, J, Kaneko, J H, Kang, J S, Kang, P, Kapusta, 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, T H, Kim, K, Kinoshita, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, J, Li, D, Liventsev, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, S, Matsumoto, T, Matsumoto, H, Miyake, H, Miyata, G R, Moloney, T, Mori, T, Nagamine, Y, Nagasaka, E, Nakano, M, Nakao, J W, Nam, Z, Natkaniec, K, Neichi, S, Nishida, O, Nitoh, S, Noguchi, T, Nozaki, S, Ogawa, F, Ohno, 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, M, Peters, L E, Piilonen, N, Root, 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, V, Sidorov, J B, Singh, S, Stanic, M, Staric, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, S K, Swain, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, T, Tomura, S N, Tovey, W, Trischuk, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, Y, Unno, S, Uno, 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, Y, Yuan, Y, Yusa, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We report the observation of prompt J/psi via double cc; production from the e+e- continuum. In this process one cc; pair fragments into a J/psi meson while the remaining pair either produces a charmonium state or fragments into open charm. Both cases have been experimentally observed. We find cross sections of sigma[e+e- --J/psieta(c)(gamma)]xB(eta(c)--or=4 charged)=(0.033(+0.007)(-0.006)+/-0.009) pb and sigma(e+e- --J/psiD(*+)X)=(0.53(+0.19)(-0.15)+/-0.14) pb and infer sigma(e+e- --J/psicc;)/sigma(e+e- --J/psiX)=0.59(+0.15)(-0.13)+/-0.12. These results are obtained from a 46.2 fb(-1) data sample collected near the Upsilon(4S) resonance, with the Belle detector at the KEKB collider.
Published: 2002

137. Observation of B(0)--D((*)0)pp

Author: K, 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, E, Banas, A, Bay, I, Bedny, P K, Behera, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, B C K, Casey, P, Chang, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, M, Danilov, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, F, Fang, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, A, Gordon, R, Guo, F, Handa, T, Hara, Y, Harada, N C, Hastings, H, Hayashii, M, Hazumi, E M, Heenan, I, Higuchi, T, Higuchi, T, Hojo, T, Hokune, Y, Hoshi, K, Hoshina, S R, Hou, W-S, Hou, S-C, Hsu, H-C, Huang, T, Igaki, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, Y, Iwasaki, H K, Jang, J, Kaneko, J H, Kang, J S, Kang, P, Kapusta, 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, T H, Kim, K, Kinoshita, S, Korpar, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, J, Li, D, Liventsev, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, S, Matsumoto, 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, K, Neichi, S, Nishida, O, Nitoh, S, Noguchi, T, Nozaki, S, Ogawa, F, Ohno, 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, M, Peters, L E, Piilonen, N, Root, M, Rozanska, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, H, Sakamoto, 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, Stanic, M, Staric, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, S K, Swain, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, T, Tomura, S N, Tovey, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, Y, Unno, S, Uno, 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, Y, Yuan, J, Zhang, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: The B meson decay modes B--Dpp; and B--D(*)pp; have been studied using 29.4 fb(-1) of data collected with the Belle detector at KEKB. The B;(0)--D(0)pp; and B;(0)--D(*0)pp; decays have been observed for the first time with branching fractions B(B;(0)--D(0)pp;)=(1.18+/-0.15+/-0.16)x10(-4) and B(B;(0)--D(*0)pp;)=(1.20(+0.33)(-0.29)+/-0.21)x10(-4). No signal has been found for the B+--D(+)pp; and B+--D(*+)pp; decay modes, and the corresponding upper limits at 90% C.L. are presented.
Published: 2002

138. Radiative B meson decays into kpigamma and kpipigamma final states

Author: S, Nishida, M, Nakao, K, Abe, T, Abe, Byoung Sup, Ahn, H, Aihara, M, Akatsu, Y, Asano, T, Aushev, A M, Bakich, Y, Ban, E, Banas, W, Bartel, A, Bay, I, Bedny, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, B C K, Casey, P, Chang, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, C, Fukunaga, N, Gabyshev, T, Gershon, A, Gordon, K, Gotow, R, Guo, J, Haba, T, Hara, H, Hayashii, M, Hazumi, E M, Heenan, I, Higuchi, T, Higuchi, T, Hojo, T, Hokuue, Y, Hoshi, S R, Hou, W-S, Hou, S-C, Hsu, H-C, Huang, T, Igaki, T, Iijima, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, M, Iwamoto, H, Iwasaki, Y, Iwasaki, P, Jalocha, H K, Jang, J H, Kang, P, Kapusta, S U, Kataoka, 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, T H, Kim, K, Kinoshita, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, J, Li, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, S, Matsumoto, T, Matsumoto, Y, Mikami, W, Mitaroff, K, Miyabayashi, H, Miyake, H, Miyata, G R, Moloney, S, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, J W, Nam, Z, Natkaniec, K, Neichi, O, Nitoh, S, Noguchi, T, Nozaki, S, Ogawa, F, Ohno, 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, M, Peters, L E, Piilonen, M, Rozanska, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, H, Sakamoto, 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, Stanic, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, M, Tomoto, T, Tomura, S N, Tovey, K, Trabelsi, 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, H, Yamamoto, Y, Yamashita, M, Yamauchi, Y, Yuan, Y, Yusa, J, Zhang, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We report observations of radiative B meson decays into the K+pi(-)gamma and K+pi(-)pi(+)gamma final states. In the B0--K+pi(-)gamma channel, we present evidence for decays via an intermediate tensor meson state with a branching fraction of B(B0--K(*)(2)(1430)(0)gamma)=[1.3+/-0.5(stat)+/-0.1(syst)]x10(-5). We measure the branching fraction B(B+--K+pi(-)pi(+)gamma)=[2.4+/-0.5(stat) +0.4-0.2(syst)]x10(-5), in which the B+--K(*0)pi(+)gamma and B+--K+rho(0)gamma channels dominate. The analysis is based on a data set of 29.4 fb(-1) recorded by the Belle experiment at the KEKB collider.
Published: 2002

139. Measurements of Branching Fractions and Decay Amplitudes in B-> J/\psi K^* decays

Author: 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, A. Bay, P.K. Behera, A. Bondar, A. Bozek, T.E. Browder, B.C.K. Casey, Y. Chao, B.G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, M. Danilov, L.Y. Dong, S. Eidelman, V. Eiges, Y. Enari, F. Fang, C. Fukunaga, T. Gershon, K. Gotow, R. Guo, J. Haba, K. Hanagaki, T. Hara, H. Hayashii, M. Hazumi, E.M. Heenan, I. Higuchi, T. Higuchi, T. Hokuue, Y. Hoshi, S.R. Hou, W.-S. Hou, H.-C. Huang, T. Igaki, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, P. Jalocha, J.H. Kang, J.S. Kang, P. Kapusta, S.U. Kataoka, 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, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, Y.-J. Kwon, J.S. Lange, G. Leder, S.H. Lee, D. Liventsev, J. MacNaughton, G. Majumder, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G.R. Moloney, S. Mori, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J.W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, F. Ohno, 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.E. Piilonen, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, S. Semenov, K. Senyo, R. Seuster, M.E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J.B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S.Y. Suzuki, T. Takahashi, F. Takasaki, N. Tamura, M. Tanaka, G.N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S.N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, S. Uno, S.E. Vahsen, G. Varner, K.E. Varvell, C.H. Wang, J.G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B.D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, M. Yokoyama, K. Yoshida, Y. Yuan, Y. Yusa, J. Zhang, Z.P. Zhang, V. Zhilich, Z.M. Zhu, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Cosmology and Extragalactic Astrophysics, Branching (polymer chemistry), Helicity, law.invention, High Energy Physics - Experiment, Transverse plane, Angular distribution, Amplitude, KEKB, law, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Collider, Astrophysics::Galaxy Astrophysics
Abstract: The branching fractions and the decay amplitudes of B -> J/psi K^* decays are measured in a 29.4/fb data sample collected with the Belle detector at the KEKB electron-positron collider. The decay amplitudes of helicity states of the J/psi K^* system are determined from the full angular distribution of the final state particles in the transversity basis. The branching fractions are measured to be (1.29\pm0.05\pm0.13) \times 10^{-3} for neutral mesons and (1.28\pm0.07\pm0.14) \times 10^{-3} for charged mesons. The measured longitudinal and transverse (perpendicular to the transversity plane) amplitudes are |A_0|^2 = 0.62\pm0.02\pm0.03 and |A_{\perp}|^2 = 0.19\pm0.02\pm0.03, respectively. The value of |A_{\perp}|^2 shows that the CP even component dominates in the B^0 \to J/\psi K^{*0}(K_S\pi^0) decay., Comment: 17 pages, 3 figures, 5 tables, to appear in Phys. Lett. B
Published: 2002

140. Search for charmless two-body baryonic decays ofBmesons

Author: 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, S. Behari, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, B. G. Cheon, K.-F. Chen, R. Chistov, Y. Choi, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, M. Fukushima, N. Gabyshev, A. Garmash, T. Gershon, A. Gordon, R. Guo, J. Haba, H. Hamasaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, P. Jalocha, H. K. Jang, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, Y. Kawakami, 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, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, T. Matsuishi, S. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, S. Mori, T. Mori, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. S. Park, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, A. Sugi, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, S. Yanaka, J. Yashima, P. Yeh, K. Yoshida, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, FOS: Physical sciences, Lambda baryon, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Particle decay, KEKB, High Energy Physics::Experiment, B meson
Abstract: We report the results of a search for the rare baryonic decays $B^0 \to p\bar{p}$, $\Lambda\bar{\Lambda}$, and $B^+ \to p\bar{\Lambda}$. The analysis is based on a data set of $31.7\times 10^6 B\bar{B}$ events collected by the Belle detector at the KEKB $e^+e^-$ collider. No statistically significant signals are found, and we set branching fraction upper limits ${\mathcal B}(B^0 \to p\bar{p}) < 1.2 \times 10^{-6}$, ${\mathcal B}(B^0 \to \Lambda\bar{\Lambda}) < 1.0 \times 10^{-6}$, and ${\mathcal B}(B^+ \to p\bar{\Lambda}) < 2.2 \times 10^{-6}$ at the 90% confidence level., Comment: 6 pages, 4 figures and 1 table. Submitted to Phys. Rev. D Rapid Communications
Published: 2002

141. Measurement of the Lifetime Difference inD0Meson Decays

Author: Y. Yamashita, Kazuo Abe, T. Hara, A. Ishikawa, Y. Asano, S. Okuno, K. Hara, S. Noguchi, T. Nagamine, T. Abe, T. Nozaki, H. C. Huang, Takuya Higuchi, F. Takasaki, P. Križan, K. Hoshina, Bruce Yabsley, T. Okabe, K. Neichi, K. Ueno, V.N. Zhilich, M. Takita, S. Schrenk, W. Ostrowicz, Pawel Jalocha, Y. J. Kwon, C. C. Wang, Y. Chao, Y. Ushiroda, R. Guo, S. R. Hou, Hiroyuki Tajima, A. Murakami, Chikara Fukunaga, Y. Watanabe, T. Ohshima, O. Nitoh, H. Miyake, H. Kichimi, Y. Tanaka, Ho Kim, Makoto Tomoto, T. Tsuboyama, S. Semenov, Hirokazu Ikeda, J. G. Wang, M. Akatsu, Takahiko Matsubara, Kevin Varvell, Shih-Chieh Hsu, C. H. Wang, Y. Iwasaki, J. W. Nam, N. C. Hastings, S. Uno, Hiroaki Aihara, S. K. Swain, K. S. Park, T. Tomura, H. Fujii, S. Ogawa, K. Miyabayashi, N. Tamura, T. J. Gershon, I. Adachi, I. Higuchi, Masaki Fukushima, D. Liventsev, M. Yamaga, T. Hojo, M. Yamauchi, S. Nishida, J. L. Rodriguez, R. Abe, Byoung Sup Ahn, M. Rozanska, S. L. Olsen, N.I. Root, A. Bondar, M. Nakao, C. C. Zhang, J. S. Lange, H. Miyata, S.I. Eidelman, H. Shibuya, E. M. Heenan, S. Korpar, Y. Mikami, T. Nakadaira, B. C. K. Casey, Prafulla Kumar Behera, V. Eiges, Y. Teramoto, Y. Hoshi, A. M. Bakich, S. Suzuki, K. Trabelsi, K. Rybicki, B.A. Shwartz, G. Leder, Y. Sakai, T. Hokuue, H. Hamasaki, T. Sumiyoshi, M. H. Tanaka, Hyunwoo Kim, Hiroyuki Sagawa, Hiroyuki Iwasaki, R. Itoh, H. K. Jang, Hiroshi Sakamoto, K. Tamai, M. E. Sevior, S. Behari, Yasuhiko Yamada, F. Fang, Tsukasa Aso, G. R. Moloney, H. J. Kim, T. Aushev, T. Tsukamoto, S. Matsumoto, T. Matsumoto, C. W. Park, M. Satapathy, Y. Zheng, T.H. Kim, Suneel Kumar, S. N. Tovey, D. Žontar, H. Palka, L. E. Piilonen, P. Krokovny, J. P. Perroud, R. Kulasiri, K. Sumisawa, S. Y. Suzuki, N. Katayama, Byung Gu Cheon, F. Handa, J. Haba, T. Kawasaki, Y. Igarashi, H. Konishi, J. MacNaughton, R. Chistov, S. Stanič, Ascelin Gordon, Y. Choi, Sadaharu Uehara, N. Kawamura, L. Y. Dong, E. Won, A. Garmash, Hirokazu Ishino, Shigeki Mori, Daniel Robert Marlow, Masashi Hazumi, Hitoshi Yamamoto, Z. Natkaniec, H. Kawai, A.S. Kuzmin, K. Senyo, N. Gabyshev, W. S. Hou, Yasushi Nagasaka, Ju Hwan Kang, J. Zhang, K. Kinoshita, Kazunori Hanagaki, Masashi Yokoyama, H. Ozaki, M. D. Peters, D. W. Kim, Kyo Yoshida, S. H. Lee, P. Pakhlov, A. Satpathy, E. Nakano, A. Yamaguchi, Jasvinder A. Singh, Heejong Kim, J. S. Kang, A. Bozek, T. Takahashi, Junichi Tanaka, T. Iijima, Y. Unno, V.M. Aulchenko, Y. Yusa, S. Kobayashi, T. Mori, K. Inami, Changwon Park, T. E. Browder, Yong Ban, H. Hayashii, M. Z. Wang, Y. Nagashima, and H. K. Park
Subjects: Physics, Particle physics, KEKB, Meson, Electron–positron annihilation, General Physics and Astronomy, Resonance
Abstract: We report a measurement of the ${D}^{0}\ensuremath{-}{\overline{D}}^{0}$ mixing parameter ${y}_{\mathrm{CP}}$ using $23.4{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected near the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at KEKB. ${y}_{\mathrm{CP}}$ is measured from the lifetime difference of ${D}^{0}$ mesons decaying into the ${K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ state and the $\mathrm{CP}$-even eigenstate ${K}^{\ensuremath{-}}{K}^{+}$. We find ${y}_{\mathrm{CP}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}(\ensuremath{-}0.5\ifmmode\pm\else\textpm\fi{}{1.0}_{\ensuremath{-}0.8}^{+0.7})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}2}$, where the first error is statistical and the second is systematic, corresponding to a $95%$ confidence interval $\ensuremath{-}0.030l{y}_{\mathrm{CP}}l0.020$.
Published: 2002

142. Study of CP-violating asymmetries in B0--pi(+)pi(-) decays

Author: 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, I, Bedny, S, Behari, P K, Behera, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, B C K, Casey, P, Chang, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, M, Danilov, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, C W, Everton, F, Fang, H, Fujii, C, Fukunaga, M, Fukushima, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, A, Gordon, R, Guo, J, Haba, H, Hamasaki, K, Hanagaki, F, Handa, K, Hara, T, Hara, N C, Hastings, H, Hayashii, M, Hazumi, E M, Heenan, I, Higuchi, T, Higuchi, T, Hojo, T, Hokuue, Y, Hoshi, K, Hoshina, S R, Hou, W-S, Hou, S-C, Hsu, H-C, Huang, T, Igaki, Y, Igarashi, T, Iijima, H, Ikeda, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, M, Iwamoto, H, Iwasaki, Y, Iwasaki, D J, Jackson, P, Jalocha, H K, Jang, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, N, Kawamura, T, Kawasaki, H, Kichimi, D W, Kim, Heejong, Kim, H J, Kim, H O, Kim, Hyunwoo, Kim, S K, Kim, T H, Kim, K, Kinoshita, S, Koishi, H, Konishi, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, A, Limosani, D, Liventsev, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, D, Marlow, T, Matsuishi, S, Matsumoto, T, Matsumoto, Y, Mikami, W, Mitaroff, K, Miyabayashi, Y, Miyabayashi, H, Miyake, H, Miyata, G R, Moloney, S, Mori, T, Mori, A, Murakami, 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, F, Ohno, 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, M, Peters, L E, Piilonen, E, Prebys, J L, Rodriguez, F J, Ronga, M, Rozanska, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, H, Sakamoto, M, Satapathy, A, Satpathy, O, Schneider, S, Schrenk, C, Schwanda, S, Semenov, K, Senyo, M E, Sevior, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, S, Stanic, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, S Y, Suzuki, S K, Swain, H, Tajima, T, Takahashi, F, Takasaki, M, Takita, K, Tamai, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, M, Tomoto, T, Tomura, S N, Tovey, K, Trabelsi, W, Trischuk, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, Y, Unno, S, Uno, Y, Ushiroda, K E, Varvell, C C, Wang, C H, Wang, J G, Wang, M-Z, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, M, Yamaga, A, Yamaguchi, H, Yamamoto, Y, Yamashita, M, Yamauchi, J, Yashima, P, Yeh, M, Yokoyama, K, Yoshida, Y, Yuan, Y, Yusa, C C, Zhang, J, Zhang, Y, Zheng, V, Zhilich, and D, Zontar
Abstract: We present a measurement of CP-violating asymmetries in B0--pi(+)pi(-) decays based on a 41.8 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We fully reconstruct one neutral B meson as a B0--pi(+)pi(-) CP eigenstate and identify the flavor of the accompanying B meson from its decay products. From the asymmetry in the distribution of the time intervals between the two B meson decay points, we obtain the CP-violating asymmetry parameters S(pipi)=-1.21(+0.38)(-0.27)(stat)+0.16-0.13(syst) and A(pipi)=+0.94(+0.25)(-0.31)(stat)+/-0.09(syst).
Published: 2002

143. Observation of Mixing-induced CP Violation in the Neutral B Meson System

Author: K. Abe, R. Abe, T. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, S. Behari, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, C. Fukunaga, M. Fukushima, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, H. Guler, R. Guo, J. Haba, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, D. J. Jackson, H. K. Jang, H. Kakuno, J. H. Kang, J. S. Kang, P. Kapusta, 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, T. H. Kim, K. Kinoshita, H. Konishi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, A. Limosani, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, S. Mori, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. S. Park, C. W. Park, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, E. Prebys, J. L. Rodriguez, F. Ronga, M. Rozanska, K. Rybicki, H. Sagawa, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, H. Tajima, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, W. Trischuk, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, S. E. Vahsen, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamamoto, T. Yamanaka, Y. Yamashita, M. Yamauchi, J. Yashima, M. Yokoyama, Y. Yuan, Y. Yusa, H. Yuta, C. C. Zhang, J. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Electron–positron annihilation, Hadron, High Energy Physics::Phenomenology, FOS: Physical sciences, Quarkonium, High Energy Physics - Experiment, Particle decay, High Energy Physics - Experiment (hep-ex), KEKB, CP violation, B meson, High Energy Physics::Experiment
Abstract: This report describes an observation of mixing-induced CP violation and a measurement of the CP violation parameter, sin(2phi_1), with the Belle detector at the KEKB asymmetric e+e- collider. Using a data sample of 29.1 fb-1 recorded on the Upsilon(4S) resonance that contains 31.3 million BBbar pairs, we reconstruct decays of neutral B mesons to the following CP eigenstates: J/psi K_S^0, psi(2S) K_S^0, chi_c1 K_S^0, eta_c K_S^0, J/psi K_L^0 and J/psi K^*0. The flavor of the accompanying B meson is identified by combining information from primary and secondary leptons, K+/- mesons, lambda baryons, slow and fast pions. The proper-time interval between the two B meson decays is determined from the distance between the two decay vertices measured with a silicon vertex detector. The result sin(2phi_1) = 0.99 +/- 0.14(stat) +/- 0.06(syst) is obtained by applying a maximum likelihood fit to the 1137 candidate events. We conclude that there is large CP violation in the neutral B meson system. A zero value for sin(2phi_1) is ruled out by more than six standard deviations., 25 pages, 16 figures, accepted for publication in Physical Review D
Published: 2002

144. Observation of chi(c2) production in B meson decay

Author: K, Abe, T, Abe, I, Adachi, H, Aihara, M, Akatsu, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, E, Banas, S, Behari, P K, Behera, 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, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, C W, Everton, F, Fang, H, Fujii, C, Fukunaga, M, Fukushima, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, A, Gordon, K, Gotow, R, Guo, J, Haba, H, Hamasaki, K, Hanagaki, F, Handa, K, Hara, T, Hara, N C, Hastings, H, Hayashii, M, Hazumi, E M, Heenan, I, Higuchi, T, Higuchi, T, Hojo, T, Hokuue, Y, Hoshi, K, Hoshina, S R, Hou, W-S, Hou, H-C, Huang, Y, Igarashi, T, Iijima, H, Ikeda, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, H, Iwasaki, Y, Iwasaki, D J, Jackson, H K, Jang, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, N, Kawamura, T, Kawasaki, H, Kichimi, D W, Kim, Heejong, Kim, H J, Kim, H O, Kim, Hyunwoo, Kim, S K, Kim, T H, Kim, K, Kinoshita, H, Konishi, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, A, Limosani, D, Liventsev, R-S, Lu, J, MacNaughton, F, Mandl, D, Marlow, S, Matsumoto, T, Matsumoto, Y, Mikami, K, Miyabayashi, H, Miyake, H, Miyata, G R, Moloney, G F, Moorhead, S, Mori, T, Mori, T, Nagamine, Y, Nagasaka, Y, Nagashima, T, Nakadaira, E, Nakano, M, Nakao, J W, Nam, Z, Natkaniec, K, Neichi, S, Nishida, O, Nitoh, S, Noguchi, T, Nozaki, S, Ogawa, F, Ohno, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, P, Pakhlov, H, Palka, C S, Park, C W, Park, H, Park, K S, Park, L S, Peak, J-P, Perroud, M, Peters, L E, Piilonen, F, Ronga, N, Root, M, Rozanska, K, Rybicki, J, Ryuko, H, Sagawa, Y, Sakai, H, Sakamoto, M, Satapathy, A, Satpathy, O, Schneider, S, Schrenk, S, Semenov, K, Senyo, M E, Sevior, H, Shibuya, J B, Singh, S, Stanic, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, S Y, Suzuki, S K, Swain, T, Takahashi, F, Takasaki, M, Takita, K, Tamai, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, M, Tomoto, T, Tomura, S N, Tovey, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, Y, Unno, S, Uno, Y, Ushiroda, K E, Varvell, C C, Wang, C H, Wang, J G, Wang, M-Z, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, M, Yamaga, A, Yamaguchi, H, Yamamoto, Y, Yamashita, M, Yamauchi, M, Yokoyama, Y, Yuan, Y, Yusa, C C, Zhang, J, Zhang, Y, Zheng, V, Zhilich, and D, Zontar
Abstract: We report the first observation of chi(c2) production in B meson decays. We find an inclusive B--chi(c2)X branching fraction of (1.80(+0.23)(-0.28)+/-0.26) x 10(-3). The data set, collected with the Belle detector at the KEKB e(+)e(-) collider, consists of 31.9 x 10(6) BB events. We also present branching fractions and momentum spectra for both chi(c1) and chi(c2) production.
Published: 2002

145. Observation of B(+/-) --p(-)pK(+/-)

Author: K, Abe, R, 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, S, Behari, P K, Behera, A, Bondar, A, Bozek, M, Bracko, 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, M, Danilov, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, C W, Everton, F, Fang, H, Fujii, C, Fukunaga, M, Fukushima, N, Gabyshev, A, Garmash, T, Gershon, K, Gotow, R, Guo, J, Haba, H, Hamasaki, F, Handa, K, Hara, T, Hara, H, Hayashii, M, Hazumi, E M, Heenan, I, Higuchi, T, Higuchi, T, Hojo, T, Hokuue, Y, Hoshi, S R, Hou, W-S, Hou, H-C, Huang, T, Igaki, Y, Igarashi, T, Iijima, H, Ikeda, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, H, Iwasaki, Y, Iwasaki, P, Jalocha, H K, Jang, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, Y, Kawakami, N, Kawamura, T, Kawasaki, H, Kichimi, D W, Kim, H J, Kim, H O, Kim, Hyunwoo, Kim, S K, Kim, K, Kinoshita, H, Konishi, S, Korpar, P, Krizan, P, Krokovny, S, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, A, Limosani, D, Liventsev, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, T, Matsuishi, S, Matsumoto, Y, Mikami, W, Mitaroff, K, Miyabayashi, Y, Miyabayashi, H, Miyake, H, Miyata, G R, Moloney, T, Nagamine, Y, Nagasaka, Y, Nagashima, 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, W, Ostrowicz, H, Ozaki, P, Pakhlov, H, Palka, C S, Park, C W, Park, K S, Park, L S, Peak, J-P, Perroud, M, Peters, L E, Piilonen, F, Ronga, N, Root, K, Rybicki, H, Sagawa, Y, Sakai, H, Sakamoto, M, Satapathy, A, Satpathy, O, Schneider, S, Schrenk, C, Schwanda, S, Semenov, K, Senyo, H, Shibuya, B, Schwartz, V, Sidorov, J B, Singh, S, Stanic, A, Sugi, A, Sugiyama, K, Sumisawa, K, Suzuki, S Y, Suzuki, T, Takahashi, F, Takasaki, M, Takita, K, Tamai, N, Tamura, J, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, T, Tomura, S N, Tovey, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, Y, Unno, S, Uno, K E, Varvell, C C, Wang, C H, Wang, J G, Wang, M-Z, Wang, Y, Watanabe, E, Won, B D, Yabsley, Y, Yamada, M, Yamaga, A, Yamaguchi, H, Yamamoto, Y, Yamashita, M, Yamauchi, S, Yanaka, P, Yeh, M, Yokoyama, Y, Yuan, J, Zhang, Y, Zheng, and D, Zontar
Abstract: We report the observation of the decay mode B(+/-) --p(-)pK(+/-)based on an analysis of 29.4 fb(-1) of data collected by the Belle detector at KEKB. This is the first example of a b--s transition with baryons in the final state. The p(-)p mass spectrum in this decay is inconsistent with phase space and is peaked at low mass. The branching fraction for this decay is measured to be B(B+/---p(-)pK+/-) = [4.3(+1.1)(-0.9)(stat)+/-0.5(syst)]x 10(-6). We also report upper limits for the decays B(0)--p(-)pK(S) and B(+/-)--p(-)p pi(+/-).
Published: 2002

146. Measurement of the inclusive semileptonic branching fraction of B mesons and |Vcb

Author: Sadaharu Uehara, S. Noguchi, A. Garmash, K. Neichi, Z. Natkaniec, N. Gabyshev, You-Jin Yuan, Hirokazu Ishino, S. Tokuda, J. W. Nam, Y. Unno, Y. Zheng, D. Liventsev, Kazuo Abe, B. D. Yabsley, T. Hara, P. Pakhlov, F. Handa, Suneel Kumar, S. N. Tovey, G. R. Moloney, M. Bračko, O. Nitoh, D. Žontar, B.A. Shwartz, Y. Miyabayashi, H. Kawai, T. Hojo, K. Senyo, Y. J. Kwon, Y. Asano, T. Aushev, S. Okuno, K. Hara, K. S. Park, T. Tomura, Rong-Shyang Lu, T. Matsuishi, Y. Choi, H. Miyake, A. Satpathy, T. Iijima, Zhenyu Zhang, Y. Ushiroda, G. Leder, R. Guo, Hiroaki Aihara, J. Zhang, S. L. Olsen, L. S. Peak, R. Itoh, K. Hyunwoo, S. Suzuki, T. Abe, V.A. Sidorov, Y. Nagasaka, N. Katayama, F. Mandl, K. Inami, F. Fang, Tsukasa Aso, S. Nishida, Antonio Limosani, K. Tamai, A.S. Kuzmin, Kazunori Hanagaki, Ho Kim, Gobinda Majumder, Hiroyuki Iwasaki, B. C. K. Casey, M. E. Sevior, Y. Kawakami, S.I. Eidelman, K. Rybicki, T. Tsukamoto, J. Kaneko, S. K. Choi, S. R. Hou, A. Bozek, M. Z. Wang, S. Saitoh, K. Gotow, T. Matsumoto, C. W. Park, M. Tanaka, S. Matsumoto, I. Adachi, P. Kapusta, W. Ostrowicz, M. Satapathy, G. N. Taylor, H. Miyata, H. K. Jang, P. Krokovny, Prafulla Kumar Behera, A. Drutskoy, Byung Gu Cheon, T. J. Gershon, C. C. Zhang, I. Bedny, J. Li, Shih-Chieh Hsu, Y. Hoshi, Chikara Fukunaga, Y. Sakai, T. Ohshima, H. Shibuya, Elzbieta Banas, T. Okabe, E. M. Heenan, V. Eiges, S. A. Byoung, M. Yamauchi, D. W. Kim, Kyo Yoshida, S. U. Kataoka, S. Stanič, S. Uno, C. Schwanda, J. Yashima, T. E. Browder, T. Higuchi, M. Nakao, Kei Suzuki, N. Kawamura, T.H. Kim, I. Higuchi, V.N. Zhilich, Yong Ban, Y. Igarashi, H. Hayashii, Y. Chao, A. Ishikawa, A. Bay, Y. Teramoto, T. Nakadaira, S. Semenov, T. Nozaki, F. Takasaki, T. Hokuue, W. A. Mitaroff, H. J. Kim, Z.M. Zhu, C. C. Wang, E. Nakano, M. Danilov, Yasuhiko Yamada, J. S. Kang, J. P. Perroud, K. Trabelsi, T. Takahashi, Junichi Tanaka, M. Akatsu, K. Miyabayashi, J. G. Wang, Y. Iwasaki, F. J. Ronga, K. Ueno, A. Yamaguchi, V.M. Aulchenko, Hiroshi Sakamoto, Jasvinder A. Singh, T. Mori, Y. Yusa, S. Kobayashi, C. H. Wang, Y. Watanabe, Yuji Enari, H. Kichimi, H. K. Park, T. Tsuboyama, Makoto Tomoto, A. Sugiyama, Y. Yamashita, H. Ozaki, K. Heejong, Seong Keun Kim, N.I. Root, N. Tamura, M. D. Peters, S. H. Lee, T. Igaki, Y. Mikami, P. Chang, T. Nagamine, H. C. Huang, M. Shimoyama, H. Kakuno, A. Sugi, S. Ogawa, Hiroyuki Sagawa, H. Palka, L. E. Piilonen, R. Kulasiri, T. Kawasaki, R. Chistov, T. Sumiyoshi, S. K. Swain, A. Bondar, Jolanta Brodzicka, K. Sumisawa, S. Y. Suzuki, Masashi Hazumi, Ju Hwan Kang, Kevin Varvell, W. S. Hou, K. Kinoshita, J. S. Lange, N. C. Hastings, A. M. Bakich, B. Golob, O. Schneider, L. Y. Dong, F. Ohno, E. Won, and J. MacNaughton
Subjects: Minimal model, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics - Experiment (hep-ex), Branching fraction, FOS: Physical sciences, Matrix element, B meson, Electron, High Energy Physics - Experiment, Lepton
Abstract: We present a measurement of the electron spectrum from inclusive semileptonic {\it B} decay, using 5.1 fb$^{-1}$ of $\Upsilon(4S)$ data collected with the Belle detector. A high-momentum lepton tag was used to separate the semileptonic {\it B} decay electrons from secondary decay electrons. We obtained the branching fraction, ${\cal B}(B\to X e^+ \nu) = (10.90 \pm 0.12 \pm 0.49)%$, with minimal model dependence. From this measurement, we derive a value for the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}| = 0.0408 \pm 0.0010 {\rm (exp)} \pm 0.0025{\rm (th)}$., Comment: 16 pages, 3 figures, 3 tables
Published: 2002
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147. Measurement of the Oscillation Frequency for B0-Bobar Mixing using Hadronic B0 Decays

Author: T. Tomura, K. Abe, N. Abe, R. Abe, T. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A.M. Bakich, Y. Ban, E. Banas, I. Bedny, 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, 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, C. Fukunaga, N. Gabyshev, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, K. Hanagaki, K. Hara, T. Hara, Y. Harada, N.C. Hastings, H. Hayashii, M. Hazumi, E.M. Heenan, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H.K. Jang, H. Kakuno, J.H. Kang, P. Kapusta, S.U. Kataoka, 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, T.H. Kim, K. Kinoshita, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J.S. Lange, G. Leder, S.H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, 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, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, S.L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C.W. Park, H. Park, L.S. Peak, J.-P. Perroud, M. Peters, L.E. Piilonen, F.J. Ronga, N. Root, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, 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, K. Suzuki, S. Suzuki, S.Y. Suzuki, H. Tajima, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G.N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, S.N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, 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, Y. Yamashita, M. Yamauchi, P. Yeh, M. Yokoyama, Y. Yuan, J. Zhang, Z.P. Zhang, Y. Zheng, and D. Žontar
Subjects: Hadronic decay, Physics, Nuclear and High Energy Physics, Particle physics, Oscillation, Detector, Hadron, High Energy Physics::Phenomenology, FOS: Physical sciences, High Energy Physics - Experiment, Decay time, High Energy Physics - Experiment (hep-ex), KEKB, High Energy Physics::Experiment, Event (particle physics), Mixing (physics)
Abstract: The oscillation frequency of B0-B0bar mixing (Delta-m_d) has been measured using 29.1 fb^{-1} of datacollected with the Belle detector at KEKB. This measurement is made through the distributions of the proper decay time difference of B pairs in events tagged as same- and opposite-flavor decays. In each event, one $B$ is fully reconstructed in a flavor-specific hadronic decay mode, while the flavor of the other is extracted through a likelihood calculated from the b-flavor information carried in its final decay products. We obtain Delta-m_d = (0.528 +- 0.017 +- 0.011) ps^{-1}, where the first error is statistical and the second error is systematic., Comment: 15 pages, 3 figures, submitted to Phys. Lett. B
Published: 2002
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148. Observation of LargeCPViolation in the NeutralBMeson System

Author: K. Abe, R. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, G. Alimonti, K. Asai, M. Asai, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, E. Banas, S. Behari, P. K. Behera, D. Beiline, A. Bondar, A. Bozek, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, R. Enomoto, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, M. Fukushima, N. Gabyshev, A. Garmash, T. J. Gershon, A. Gordon, K. Gotow, H. Guler, R. Guo, J. Haba, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, Y. Higasino, I. Higuchi, T. Higuchi, T. Hirai, H. Hirano, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, Y. Igarashi, T. Iijima, H. Ikeda, K. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, G. Iwai, H. Iwasaki, Y. Iwasaki, D. J. Jackson, P. Jalocha, H. K. Jang, M. Jones, R. Kagan, H. Kakuno, J. Kaneko, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, Hyunwoo Kim, S. K. Kim, T. H. Kim, K. Kinoshita, S. Kobayashi, S. Koishi, H. Konishi, K. Korotushenko, P. Krokovny, R. Kulasiri, S. Kumar, T. Kuniya, E. Kurihara, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, M. H. Lee, S. H. Lee, C. Leonidopoulos, Y.-S. Lin, D. Liventsev, R.-S. Lu, J. MacNaughton, D. Marlow, T. Matsubara, S. Matsui, S. Matsumoto, T. Matsumoto, Y. Mikami, K. Misono, K. Miyabayashi, H. Miyake, H. Miyata, L. C. Moffitt, G. R. Moloney, G. F. Moorhead, S. Mori, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, T. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, Y. Ohshima, T. Okabe, T. Okazaki, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, H. Palka, C. S. Park, C. W. Park, H. Park, L. S. Peak, M. Peters, L. E. Piilonen, E. Prebys, J. L. Rodriguez, N. Root, M. Rozanska, K. Rybicki, J. Ryuko, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, S. Schrenk, S. Semenov, K. Senyo, Y. Settai, M. E. Sevior, H. Shibuya, B. Shwartz, A. Sidorov, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, J.-I. Suzuki, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, H. Tajima, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, S. E. Vahsen, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamamoto, T. Yamanaka, Y. Yamashita, M. Yamauchi, S. Yanaka, J. Yashima, M. Yokoyama, K. Yoshida, Y. Yusa, H. Yuta, C. C. Zhang, J. Zhang, H. W. Zhao, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, Electron–positron annihilation, General Physics and Astronomy, CP violation, Resonance, High Energy Physics::Experiment, B meson, Standard Model
Abstract: We present a measurement of the standard model $\mathrm{CP}$ violation parameter $\mathrm{sin}2{\ensuremath{\varphi}}_{1}$ based on a $29.1{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. One neutral $B$ meson is fully reconstructed as a $J/\ensuremath{\psi}{K}_{S}$, $\ensuremath{\psi}(2S){K}_{S}$, ${\ensuremath{\chi}}_{c1}{K}_{S}$, ${\ensuremath{\eta}}_{c}{K}_{S}$, $J/\ensuremath{\psi}{K}_{L}$, or $J/\ensuremath{\psi}{K}^{*0}$ decay and the flavor of the accompanying $B$ meson is identified from its decay products. From the asymmetry in the distribution of the time intervals between the two $B$ meson decay points, we determine $\mathrm{sin}2{\ensuremath{\varphi}}_{1}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.99\ifmmode\pm\else\textpm\fi{}0.14(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.06(\mathrm{syst})$. We conclude that we have observed $\mathrm{CP}$ violation in the neutral $B$ meson system.
Published: 2001

149. Observation of Cabibbo-suppressed and W-exchange Lambda_c^+ baryon decays

Author: K. Abe, R. 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, S. Behari, P.K. Behera, A. Bondar, A. Bozek, T.E. Browder, B.C.K. Casey, P. Chang, Y. Chao, B.G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, L.Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, H. Fujii, C. Fukunaga, M. Fukushima, N. Gabyshev, A. Garmash, T. Gershon, A. Gordon, R. Guo, J. Haba, H. Hamasaki, F. Handa, K. Hara, T. Hara, N.C. Hastings, H. Hayashii, M. Hazumi, E.M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S.R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, D.J. Jackson, P. Jalocha, H.K. Jang, R. Kagan, J.H. Kang, J.S. Kang, P. Kapusta, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D.W. Kim, Heejong Kim, H.J. Kim, H.O. Kim, Hyunwoo Kim, S.K. Kim, T.H. Kim, K. Kinoshita, H. Konishi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J.S. Lange, G. Leder, S.H. Lee, D. Liventsev, R.-S. Lu, J. MacNaughton, T. Matsubara, S. Matsumoto, T. Matsumoto, Y. Mikami, K. Miyabayashi, H. Miyake, H. Miyata, G.R. Moloney, S. Mori, T. Mori, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, E. Nakano, M. Nakao, J.W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S.L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C.S. Park, C.W. Park, H. Park, K.S. Park, L.S. Peak, J.-P. Perroud, M. Peters, L.E. Piilonen, N. Root, M. Rozanska, K. Rybicki, J. Ryuko, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, O. Schneider, S. Schrenk, S. Semenov, K. Senyo, M.E. Sevior, H. Shibuya, B. Shwartz, J.B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S.Y. Suzuki, S.K. Swain, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, Y. Tanaka, G.N. Taylor, Y. Teramoto, M. Tomoto, T. Tomura, S.N. Tovey, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, S.E. Vahsen, K.E. Varvell, C.C. Wang, C.H. Wang, J.G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B.D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, Y. Yamashita, M. Yamauchi, S. Yanaka, J. Yashima, M. Yokoyama, K. Yoshida, Y. Yuan, Y. Yusa, C.C. Zhang, J. Zhang, H.W. Zhao, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Sigma, FOS: Physical sciences, Lambda, High Energy Physics - Experiment, W-exchange, Baryon, Charmed baryon, High Energy Physics - Experiment (hep-ex), KEKB, Cabibbo-suppressed
Abstract: We present measurements of the Cabibbo-suppressed decays Lambda_c^+ --> Lambda0 K+ and Lambda_c^+ --> Sigma0 K+ (both first observations), Lambda_c^+ --> Sigma+ K+ pi- (seen with large statistics for the first time), Lambda_c^+ --> p K+ K- and Lambda_c^+ --> p phi (measured with improved accuracy). Improved branching ratio measurements for the decays Lambda_c^+ --> Sigma+ K+ K- and Lambda_c^+ --> Sigma+ phi, which are attributed to W-exchange diagrams, are shown. We also present the first evidence for Lambda_c^+ --> Xi(1690)^0 K+ and set an upper limit on the non-resonant decay Lambda_c^+ --> Sigma+ K+ K-. This analysis was performed using 32.6 fb^{-1} of data collected by the Belle detector at the asymmetric e+ e- collider KEKB., Submitted to Phys. Lett. B. v2: A small correction to the Authorlist was made. An earlier version of this analysis was released as BELLE-CONF-0130, hep-ex/0108003
Published: 2001
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150. PHYSICS PROGRAM AT HERA-B WITH HIGH-PT TRIGGER

Author: Mikhail V Danilov, V. Balagura, V. Eiges, R. Chistov, and R. Mizuk
Subjects: Physics, Particle physics, HERA-B
Published: 2000

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