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13 results on '"N.C Hastings"'

1. Search for the Θ(1540)+ pentaquark using kaon secondary interactions at Belle

Author

R. Mizuk, M. Danilov, K. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aushev, S. Bahinipati, A.M. Bakich, V. Balagura, S. Banerjee, E. Barberio, M. Barbero, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T.E. Browder, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W.T. Chen, B.G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, J. Dalseno, M. Dash, L.Y. Dong, A. Drutskoy, S. Eidelman, Y. Enari, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, J. Haba, T. Hara, N.C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, K. Ikado, A. Imoto, A. Ishikawa, R. Itoh, Y. Iwasaki, J.H. Kang, J.S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H.R. Khan, H. Kichimi, H.J. Kim, J.H. Kim, S.K. Kim, S.M. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, C.C. Kuo, A. Kuzmin, Y.-J. Kwon, J.S. Lange, S.E. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, G.R. Moloney, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, 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, N. Parslow, L.S. Peak, R. Pestotnik, L.E. Piilonen, Y. Sakai, N. Sato, N. Satoyama, K. Sayeed, T. Schietinger, O. Schneider, A.J. Schwartz, M.E. Sevior, H. Shibuya, V. Sidorov, J.B. Singh, A. Somov, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G.N. Taylor, Y. Teramoto, X.C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, G. Varner, K.E. Varvell, S. Villa, C.C. Wang, C.H. Wang, M.-Z. Wang, Y. Watanabe, E. Won, Q.L. Xie, B.D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, S.L. Zang, J. Zhang, L.M. Zhang, Z.P. Zhang, V. Zhilich, and D. Zürcher

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, KEKB, law, Hyperon, Collider, Resonance (particle physics), Pentaquark, law.invention, Charge exchange
Abstract

Using kaon secondary interactions in the material of the Belle detector, we search for both inclusive and exclusive production of the Θ(1540) +. We set an upper limit of 2.5% at the 90% C.L. on the ratio of the Θ(1540)+ to Λ(1520) inclusive production cross sections. We also search for the Θ(1540)+ as an intermediate resonance in the charge exchange reaction K+n→pKS 0. We set an upper limit of ΓΘ+

Published
2006

2. Measurement of |Vub| near the endpoint of the electron momentum spectrum from semileptonic B-meson decays

Author

A. Limosani, K. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aushev, S. Bahinipati, A.M. Bakich, E. Barberio, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T.E. Browder, Y. Chao, A. Chen, K.-F. Chen, W.T. Chen, B.G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, T. Hara, N.C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J.H. Kang, J.S. Kang, N. Katayama, H. Kawai, T. Kawasaki, H.R. Khan, H. Kichimi, H.J. Kim, H.O. Kim, S.K. Kim, S.M. Kim, K. Kinoshita, S. Korpar, P. Krokovny, R. Kulasiri, S. Kumar, C.C. Kuo, Y.-J. Kwon, J.S. Lange, G. Leder, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S.L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, H. Palka, C.W. Park, H. Park, N. Parslow, R. Pestotnik, L.E. Piilonen, F.J. Ronga, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, C. Schwanda, R. Seuster, M.E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, A. Somov, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S.Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X.C. Tian, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, P. Urquijo, G. Varner, K.E. Varvell, S. Villa, C.C. Wang, C.H. Wang, M.-Z. Wang, Q.L. Xie, B.D. Yabsley, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, J. Ying, J. Zhang, L.M. Zhang, Z.P. Zhang, and D. Žontar

Subjects
Physics, Nuclear physics, Momentum, Nuclear and High Energy Physics, Particle physics, Cabibbo–Kobayashi–Maskawa matrix, Branching fraction, Electron–positron annihilation, B meson, Center of mass, Electron, Resonance (particle physics)
Abstract

Reference EPFL-ARTICLE-154483doi:10.1016/j.physletb.2005.06.011View record in Web of Science Record created on 2010-11-05, modified on 2017-05-12

Published
2005

3. Branching fraction, polarization and CP-violating asymmetries in B0→D*+D*− decays

Author

H. Miyake, M. Hazumi, K. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A.M. Bakich, V. Balagura, Y. Ban, S. Banerjee, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T.E. Browder, Y. Chao, A. Chen, K.-F. Chen, B.G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y.K. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, L.Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, K. Hara, T. Hara, N.C. Hastings, K. Hayasaka, H. Hayashii, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J.H. Kang, J.S. Kang, P. Kapusta, S.U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H.R. Khan, H. Kichimi, H.J. Kim, J.H. Kim, S.K. Kim, S.M. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, C.C. Kuo, A. Kuzmin, Y.-J. Kwon, G. Leder, S.E. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyata, R. Mizuk, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S.L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, N. Parslow, L.S. Peak, R. Pestotnik, L.E. Piilonen, M. Rozanska, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, P. Schönmeier, J. Schümann, C. Schwanda, A.J. Schwartz, K. Senyo, R. Seuster, M.E. Sevior, H. Shibuya, J.B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, S.Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X.C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, Y. Ushiroda, G. Varner, K.E. Varvell, S. Villa, C.C. Wang, C.H. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, A. Yamaguchi, H. Yamamoto, T. Yamanaka, Y. Yamashita, M. Yamauchi, J. Ying, Y. Yusa, J. Zhang, L.M. Zhang, Z.P. Zhang, V. Zhilich, and D. Žontar

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Electron–positron annihilation, Astrophysics::Cosmology and Extragalactic Astrophysics, Polarization (waves), Nuclear physics, KEKB, CP violation, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract

We present measurements of the branching fraction, the polarization parameters and CP-violating asymmetries in B0→D*+D *- decays using a 140 fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. We obtain B(B0→D*+D*-)=[0. 81±0.08(stat)±0.11(syst)]×10-3, R⊥=0.19±0. 08(stat)±0.01(syst), R0=0.57±0.08(stat)±0.02(syst), S=-0.75±0.56(stat)±0.12(syst) and A=-0.26±0.26(stat) ±0.06(syst). Consistency with Standard Model expectations is also discussed.

Published
2005

4. Observation of the decays B0→K+π−π0 and B0→ρ−K+

Author

P. Chang, K. Abe, T. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A.M. Bakich, Y. Ban, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T.E. Browder, M.-C. Chang, Y. Chao, B.G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, S. Cole, M. Danilov, M. Dash, L.Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, R. Guo, N.C. Hastings, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y.B. Hsiung, H.-C. Huang, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, J.H. Kang, J.S. Kang, S.U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H.R. Khan, H. Kichimi, H.J. Kim, J.H. Kim, S.K. Kim, T.H. Kim, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, S.E. Lee, T. Lesiak, J. Li, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Okabe, S. Okuno, S.L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Park, N. Parslow, L.S. Peak, L.E. Piilonen, A. Poluektov, N. Root, M. Rozanska, H. Sagawa, Y. Sakai, O. Schneider, J. Schümann, S. Semenov, K. Senyo, M.E. Sevior, H. Shibuya, V. Sidorov, A. Somov, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, G. Varner, K.E. Varvell, S. Villa, C.C. Wang, C.H. Wang, M.-Z. Wang, M. Watanabe, B.D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, C.C. Zhang, J. Zhang, Z.P. Zhang, and D. Žontar

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Electron–positron annihilation, media_common.quotation_subject, Dalitz plot, State (functional analysis), Asymmetry, law.invention, KEKB, law, Collider, media_common
Abstract

We report the observation of B0 decays to the K+π-π0 final state using a data sample of 78 fb-1 collected by the Belle detector at the KEKB e+e- collider. With no assumptions about intermediate states in the decay, the branching fraction is measured to be (36.6-4.3+4.2±3.0)×10-6. We also search for B decays to intermediate two-body states with the same K+π-π0 final state. Significant B signals are observed in the ρ(770)-K+ and K*(892)+π- channels, with branching fractions of (15.1-3.3-1.5-2.1+3.4+1.4+2.0)×10-6 and (14.8-4.4-1.0-0.9+4.6+1.5+2.4) ×10-6, respectively. The first error is statistical, the second is systematic and the third is due to the largest possible interference. Contributions from other possible two-body states will be discussed. No CP asymmetry is found in the inclusive K+π-π0 or ρ-K+ modes, and we set 90% confidence level bounds on the asymmetry of -0.12

Published
2004

5. Study of →Dππ decays

Author

A Satpathy, K Abe, R Abe, T Abe, I Adachi, H Aihara, M Akatsu, Y Asano, T Aso, T Aushev, A.M Bakich, Y Ban, A Bay, I Bedny, P.K Behera, 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, M Danilov, L.Y Dong, S Eidelman, V Eiges, C Fukunaga, N Gabyshev, A Garmash, T Gershon, B Golob, J Haba, T Hara, N.C Hastings, H Hayashii, M Hazumi, I Higuchi, L Hinz, T Hokuue, 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, P Kapusta, S.U Kataoka, N Katayama, H Kawai, Y Kawakami, N Kawamura, T Kawasaki, H Kichimi, D.W Kim, H.J Kim, Hyunwoo Kim, S.K Kim, K Kinoshita, S Kobayashi, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, Y.-J Kwon, 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, 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, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, C.W Park, K.S Park, J.-P Perroud, M Peters, L.E Piilonen, K Rybicki, H Sagawa, S Saitoh, Y Sakai, M Satapathy, O Schneider, S Schrenk, C Schwanda, S Semenov, K Senyo, R Seuster, H Shibuya, 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, G.N Taylor, Y Teramoto, T Tomura, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, S Uno, G Varner, C.H Wang, J.G Wang, M.-Z Wang, E Won, B.D Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, H Yanai, Y Yuan, C.C Zhang, Z.P Zhang, and V Zhilich

Subjects
Nuclear physics, Hadronic decay, Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Annihilation, Branching fraction, Pi, Omega
Abstract

We report on a study of $\bar{B^{0}} \to D^{(*) 0} \pi^+ \pi^-$ decays using 29.1 fb$^{-1}$ of $e^{+}e^{-}$ annihilation data recorded at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB storage ring. Making no assumptions about the intermediate mechanism, the branching fractions for $\bar{B}^0 \to D^0 \pi^+ \pi^-$ and $\bar{B}^0 \to D^{* 0} \pi^+ \pi^-$ are determined to be $(8.0 \pm 0.6 \pm 1.5) \times 10^{-4} $ and $ (6.2 \pm 1.2 \pm 1.8) \times 10^{-4}$ respectively. An analysis of $\bar{B^{0}} \to D^{0} \pi^+ \pi^-$ candidates yields to the first observation of the color-suppressed hadronic decay $\bar{B}^0 \to D^0 \rho^0$ with the branching fraction $(2.9 \pm 1.0 \pm 0.4) \times 10^{-4}$. We measure the ratio of branching fractions ${\mathcal B}(\bar{B^0} \to D^0 \rho^0) / {\mathcal B}(\bar{B^0} \to D^0 \omega)$ = 1.6 $\pm$ 0.8.

Published
2003

6. Measurement of CP-violating parameters in B→η′K decays

Author

K.-F. Chen, K. Hara, 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, 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, F. Fang, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, K. Hanagaki, F. Handa, T. Hara, N.C. Hastings, H. Hayashii, M. Hazumi, 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, 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, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, K. Miyabayashi, Y. Miyabayashi, H. Miyata, G.R. Moloney, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J.W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, 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, 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, W. Trischuk, 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, M. Yokoyama, Y. Yuan, Y. Yusa, Z.P. Zhang, V. Zhilich, and D. Žontar

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Meson, Resonance, High Energy Physics::Experiment, Nuclear Experiment, Prime (order theory)
Abstract

We present measurements of CP-violating parameters in $B^0(\bar{B}{}^0) \to \eta^\prime K_S^0$ and $B^{\pm} \to \eta' K^{\pm}$ 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 $B^0(\bar{B}{}^0) \to \eta^\prime K_S^0$ CP eigenstate and identify the flavor of the accompanying $B$ from its decay products. From the distribution of time intervals between pairs of $B$ meson decay points, we obtain the CP-violating asymmetry parameters ${\mathcal S}_{\eta^\prime K_S^0} = 0.28\pm0.55(stat)^{+0.07}_{-0.08}(syst)$, and ${\mathcal A}_{\eta^\prime K_S^0} = 0.13\pm0.32(stat)^{+0.09}_{-0.06}(syst)$. We also reconstruct charged $B^{\pm} \to \eta^\prime K^{\pm}$ decays and determine a direct-CP violating asymmetry value of ${\mathcal A}_{\eta^\prime K^\pm}=(-1.5\pm7.0(stat)\pm0.9(syst))%$.

Published
2002

7. Study of B→ρπ decays at Belle

Author

A. Gordon, Y. Chao, 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, A. Bay, 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, B.G. Cheon, R. Chistov, Y. Choi, Y.K. 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, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, T. Hara, Y. Harada, N.C. Hastings, 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. 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, 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, 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, V. Sidorov, J.B. Singh, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S.Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G.N. Taylor, Y. Teramoto, S. Tokuda, S.N. Tovey, 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, and D. Žontar

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Pi, B meson
Abstract

This paper describes a study of B meson decays to the pseudoscalar-vector final state \rho\pi using 31.9\times 10^6 B\bar{B} events collected with the Belle detector at KEKB. The branching fractions B(B^+ \to \rho^0\pi^+) = (8.0^{+2.3+0.7}_{-2.0-0.7}) \times 10^{-6} and B(B^0 -> \rho^{+-} \pi^{-+}) = (20.8^{+6.0+2.8}_{-6.3-3.1}) \times 10^{-6} are obtained. In addition, a 90% confidence level upper limit of B(B^0 \to \rho^0\pi^0) < 5.3 \times 10^{-6}is reported.

Published
2002

8. The Belle detector

Author

A. Abashian, K. Gotow, N. Morgan, L. Piilonen, S. Schrenk, K. Abe, I. Adachi, J.P. Alexander, K. Aoki, S. Behari, Y. Doi, R. Enomoto, H. Fujii, Y. Fujita, Y. Funahashi, J. Haba, H. Hamasaki, T. Haruyama, K. Hayashi, Y. Higashi, N. Hitomi, S. Igarashi, Y. Igarashi, T. Iijima, Hirokazu Ikeda, Hitomi Ikeda, R. Itoh, M. Iwai, H. Iwasaki, Y. Iwasaki, K.K. Joo, K. Kasami, N. Katayama, M. Kawai, H. Kichimi, T. Kobayashi, S. Koike, Y. Kondo, M.H. Lee, Y. Makida, A. Manabe, T. Matsuda, T. Murakami, S. Nagayama, M. Nakao, T. Nozaki, K. Ogawa, R. Ohkubo, Y. Ohnishi, H. Ozaki, H. Sagawa, M. Saito, Y. Sakai, T. Sasaki, N. Sato, T. Sumiyoshi, J. Suzuki, J.I. Suzuki, S. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, T. Tatomi, T. Tsuboyama, K. Tsukada, T. Tsukamoto, S. Uehara, N. Ujiie, S. Uno, B. Yabsley, Y. Yamada, H. Yamaguchi, H. Yamaoka, Y. Yamaoka, M. Yamauchi, Y. Yoshimura, H. Zhao, R. Abe, G. Iwai, T. Kawasaki, H. Miyata, K. Shimada, S. Takahashi, N. Tamura, H. Hanada, T. Nagamine, M. Nakajima, T. Nakajima, S. Narita, M. Sanpei, T. Takayama, M. Ueki, M. Yamaga, A. Yamaguchi, B.S. Ahn, J.S. Kang, Hyunwoo Kim, C.W. Park, H. Park, H.S. Ahn, H.K. Jang, C.H. Kim, S.K. Kim, S.H. Lee, C.S. Park, E. Won, H. Aihara, T. Higuchi, H. Kawai, T. Matsubara, T. Nakadaira, H. Tajima, J. Tanaka, T. Tomura, M. Yokoyama, M. Akatsu, K. Fujimoto, M. Hirose, K. Inami, A. Ishikawa, S. Itami, T. Kani, T. Matsumoto, I. Nagai, T. Okabe, T. Oshima, K. Senyo, A. Sugi, A. Sugiyama, S. Suitoh, M. Tomoto, K. Yoshida, R. Akhmetshin, P. Chang, Y. Chao, Y.Q. Chen, W.S. Hou, S.C. Hsu, H.C. Huang, T.J. Huang, M.C. Lee, R.S. Lu, J.C. Peng, K.C. Peng, S. Sahu, H.F. Sung, K.L. Tsai, K. Ueno, C.C. Wang, M.Z. Wang, G. Alimonti, T.E. Browder, B.C.K. Casey, F. Fang, H. Guler, M. Jones, Y. Li, S.L. Olsen, M. Peters, J.L. Rodriguez, M. Rosen, S. Swain, K. Trabelsi, G. Varner, H. Yamamoto, Y.H. Zheng, Q. An, H.F. Chen, Y.F. Wang, Z.Z. Xu, S.W. Ye, Z.P. Zhang, M. Asai, Y. Asano, S. Mori, S. Stanič, Y. Tsujita, J. Zhang, D. Žontar, T. Aso, V. Aulchenko, D. Beiline, A. Bondar, L. Dneprovsky, S. Eidelman, A. Garmash, A. Kuzmin, L. Romanov, N. Root, B. Shwartz, A. Sidorov, V. Sidorov, Y. Usov, V. Zhilich, A.M. Bakich, L.S. Peak, K.E. Varvell, E. Banas, A. Bozek, P. Jalocha, P. Kapusta, Z. Natkaniec, W. Ostrowicz, H. Palka, M. Rozanka, K. Rybicki, P.K. Behera, A. Mohapatra, M. Satapathy, Y.H. Chang, H.S. Chen, L.Y. Dong, J. Li, H.M. Liu, Z.P. Mao, C.X. Yu, C.C. Zhang, S.Q. Zhang, Z.G. Zhao, Z.P. Zheng, B.G. Cheon, Y. Choi, D.W. Kim, J.W. Nam, S. Chidzik, K. Korotuschenko, C. Leonidopoulos, T. Liu, D. Marlow, C. Mindas, E. Prebys, R. Rabberman, W. Sands, R. Wixted, S. Choi, J. Dragic, C.W. Everton, A. Gordon, N.C. Hastings, E.M. Heenan, L.C. Moffitt, G.R. Moloney, G.F. Moorhead, M.E. Sevior, G.N. Taylor, S.N. Tovey, A. Drutskoy, R. Kagan, P. Pakhlov, S. Semenov, C. Fukunaga, R. Suda, M. Fukushima, V.I. Goriletsky, B.V. Grinyov, V.R. Lyubinsky, A.I. Panova, K.V. Shakhova, L.I. Shpilinskaya, E.L. Vinograd, B.G. Zaslavsky, R.S. Guo, F. Haitani, Y. Hoshi, K. Neichi, K. Hara, T. Hara, M. Hazumi, T. Hojo, D. Jackson, H. Miyake, Y. Nagashima, J. Ryuko, K. Sumisawa, M. Takita, T. Yamanaka, H. Hayashii, K. Miyabayashi, S. Noguchi, S. Hikita, H. Hirano, K. Hoshina, H. Mamada, O. Nitoh, N. Okazaki, T. Yokoyama, H. Ishino, S. Ichizawa, T. Hirai, H. Kakuno, J. Kaneko, T. Nakamura, Y. Ohshima, Y. Watanabe, S. Yanaka, Y. Inoue, E. Nakano, T. Takahashi, Y. Teramoto, J.H. Kang, H.J. Kim, Heejong Kim, Y.-J. Kwon, E. Kurihara, T. Ooba, K. Suzuki, Y. Unno, N. Kawamura, H. Yuta, K. Kinoshita, A. Satpathy, S. Kobayashi, T. Kuniya, A. Murakami, S. Kumar, J. Singh, J. Lange, R. Stock, S. Matsumoto, M. Watanabe, H. Matsuo, S. Nishida, T. Nomura, H. Sakamoto, N. Sasao, Y. Ushiroda, Y. Nagasaka, Y. Tanaka, S. Ogawa, H. Shibuya, K. Hanagaki, S. Okuno, D.Z. Shen, D.S. Yan, Z.W. Yin, N. Tan, C.H. Wang, T. Yamaki, and Y. Yamashita

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, Meson, Physics::Instrumentation and Detectors, Detector, Particle detector, Particle identification, Belle experiment, Semiconductor detector, Nuclear physics, KEKB, Computer Science::Programming Languages, Physics::Accelerator Physics, High Energy Physics::Experiment, Instrumentation
Abstract

The BELLE detector for experiments at KEKB, a high luminosity, energy asymmetric B-factory, is now being constructed at KEK. An overview of the detector systems and their status is presented.

Published
2002

9. Determination of |V| using the semileptonic decay →De

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, 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, 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, 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, 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, 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, N. Root, M. Rozanska, J. Ryuko, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, S. Schrenk, S. Semenov, K. Senyo, M.E. Sevior, H. Shibuya, B. Shwartz, J.B. Singh, S. Stanič, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S.Y. Suzuki, S.K. Swain, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, Y. Tanaka, G.N. Taylor, Y. Teramoto, M. Tomoto, T. Tomura, S.N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, S.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, 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
Nuclear physics, Physics, Semileptonic decay, Nuclear and High Energy Physics, KEKB, Branching fraction, Electron–positron annihilation, Form factor (quantum field theory), Value (computer science), Resonance, Storage ring
Abstract

We present a measurement of the Cabibbo–Kobayashi–Maskawa (CKM) matrix element |Vcb| using a 10.2 fb−1 data sample recorded at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric e+e− storage ring. By extrapolating the differential decay width of the B 0 →D ∗+ e − ν decay to the kinematic limit at which the D ∗+ is at rest with respect to the B 0 , we extract the product of |Vcb| with the normalization of the decay form factor F(1), |Vcb|F(1)=(3.54±0.19±0.18)×10−2, where the first error is statistical and the second is systematic. A value of |Vcb|=(3.88±0.21±0.20±0.19)×10−2 is obtained using a theoretical calculation of F(1), where the third error is due to the theoretical uncertainty in the value of F(1). The branching fraction B ( B 0 →D ∗+ e − ν ) is measured to be (4.59±0.23±0.40)×10−2.

Published
2002

10. Measurement of the branching fraction for B→η′K and search for B→η′π+

Author

K Abe, R Abe, I Adachi, B.S Ahn, H Aihara, M Akatsu, Y Asano, T Aso, V Aulchenko, 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, B.G Cheon, R Chistov, S.-K Choi, Y Choi, L.Y Dong, J Dragic, S Eidelman, Y Enari, F Fang, H Fujii, C Fukunaga, M Fukushima, N Gabyshev, A Garmash, T Gershon, A Gordon, K Gotow, R Guo, J Haba, H Hamasaki, K Hara, T Hara, N.C Hastings, H Hayashii, M Hazumi, E.M Heenan, I Higuchi, T Higuchi, H Hirano, T Hojo, 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, G Iwai, H Iwasaki, Y Iwasaki, D.J Jackson, P Jalocha, H.K Jang, J Kaneko, J.H Kang, J.S Kang, N Katayama, H Kawai, 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, H Konishi, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, Y.-J Kwon, J.S Lange, G Leder, S.H Lee, D Liventsev, R.-S Lu, T Matsubara, S Matsumoto, T Matsumoto, J MacNaughton, Y Mikami, K 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, S Narita, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, 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, H Sagawa, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, S Semenov, K Senyo, M.E Sevior, H Shibuya, B Shwartz, S Stanič, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, S.Y Suzuki, S.K Swain, T Takahashi, M Takita, K Tamai, N Tamura, J Tanaka, M Tanaka, Y Tanaka, 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, Y Yamashita, M Yamauchi, S Yanaka, J Yashima, 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, Nuclear and High Energy Physics, Meson, Branching fraction, Pi, High Energy Physics::Experiment, Nuclear Experiment, Confidence interval
Abstract

We report measurements for two-body charmless B decays with an eta' meson in the final state. Using 11.1X10^6 BBbar pairs collected with the Belle detector, we find BF(B^+ ->eta'K^+)=(79^+12_-11 +-9)x10^-6 and BF(B^0 -> eta'K^0)=(55^+19_-16 +-8)x10^-6, where the first and second errors are statistical and systematic, respectively. No signal is observed in the mode B^+ -> eta' pi^+, and we set a 90% confidence level upper limit of BF(B^+-> eta'pi^+) eta'K^+- decays is investigated and a limit at 90% confidence level of -0.20

Published
2001
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11. A measurement of the branching fraction for the inclusive B→Xγ decays with the Belle detector

Author

K. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, G. Alimonti, K. Aoki, K. Asai, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A.M. Bakich, E. Banas, W. Bartel, S. Behari, P.K. Behera, D. Beiline, A. Bondar, A. Bozek, T.E. Browder, B.C.K. Casey, P. Chang, Y. Chao, B.G. Cheon, S.-K. Choi, Y. Choi, Y. Doi, J. Dragic, A. Drutskoy, S. Eidelman, Y. Enari, R. Enomoto, F. Fang, H. Fujii, C. Fukunaga, M. Fukushima, A. Garmash, A. Gordon, K. Gotow, H. Guler, R. Guo, J. Haba, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, T. Haruyama, N.C. Hastings, K. Hayashi, H. Hayashii, M. Hazumi, E.M. Heenan, Y. Higasino, I. Higuchi, T. Higuchi, H. Hirano, T. Hojo, Y. Hoshi, W.-S. Hou, S.-C. Hsu, H.-C. Huang, S. Ichizawa, 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, N. Kawamura, T. Kawasaki, H. Kichimi, D.W. Kim, Heejong Kim, H.J. Kim, Hyunwoo Kim, S.K. Kim, K. Kinoshita, K. Korotushenko, P. Krokovny, R. Kulasiri, S. Kumar, T. Kuniya, E. Kurihara, A. Kuzmin, Y.-J. Kwon, J.S. Lange, M.H. Lee, S.H. Lee, H.B. Li, D. Liventsev, R.-S. Lu, A. Manabe, 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, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, E. Nakano, M. Nakao, J.W. Nam, S. Narita, 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, W. Ostrowicz, H. Ozaki, 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, 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, Y. Tanaka, G.N. Taylor, Y. Teramoto, M. Tomoto, T. Tomura, S.N. Tovey, K. Trabelsi, T. Tsuboyama, Y. Tsujita, T. Tsukamoto, S. Uehara, K. Ueno, N. Ujiie, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, S.E. Vahsen, G. Varner, K.E. Varvell, C.C. Wang, C.H. Wang, M.-Z. Wang, T.J. Wang, Y. Watanabe, E. Won, B.D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamamoto, H. Yamaoka, Y. Yamaoka, Y. Yamashita, M. Yamauchi, S. Yanaka, M. Yokoyama, K. Yoshida, 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, KEKB, Branching fraction, Detector, Radiative transfer, Resonance, B meson, Storage ring, High Energy Physics - Experiment
Abstract

We have measured the branching fraction of the inclusive radiative B meson decay B --> X(s) gamma to be Br(B->X(s)gamma)=(3.36 +/- 0.53(stat) +/- 0.42(sys) +0.50-0.54(th)) x 10^{-4}. The result is based on a sample of 6.07 x 10^6 BBbar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e^+e^- storage ring., Comment: 14 pages, 6 Postsript figures, uses elsart.cls

Published
2001

12. 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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13. 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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