Author: "M. Yamauchi" / Topic: nuclear physics - Searchworks@Jio Institute Digital Library Search Results

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162 results on '"M. Yamauchi"'

1. Measurement of the Michel parameters (η‾, ξκ ) in the radiative leptonic decay of τ

Author: J. E. Fast, D. Dossett, M. Niiyama, L. Pesántez, V. Trusov, Andrey Sokolov, S. Shinomiya, Byeong Rok Ko, M. Feindt, I. Nakamura, V. Babu, Hui Li, Jingxu Wang, T. Aushev, O. Frost, Z. Suzuki, J. Grygier, J. H. Kang, Y. Miyachi, Hikaru Kawai, M. Belhorn, Benjamin Schwenker, T. Zivko, Y. B. Hsiung, K. Neichi, A. Zupanc, C. C. Zhang, E. Nakano, Antonio Limosani, T. Ferber, D. H. Lee, H. Kakuno, H. Shibuya, M. Watanabe, L. S. Peak, C. Niebuhr, O. Nitoh, K. Nishimura, Chawon Park, A. Loos, J. C. Dingfelder, M. V. Purohit, P. Goldenzweig, Rupert Leitner, V. V. Zhulanov, J. Yamaoka, Xiuwan Li, K. Senyo, S. Eidelman, L. Shang, Ihn Sik Seong, S. Sandilya, K. Ueno, M. Heck, M. J. Kim, T. Kawasaki, P. Pakhlov, W. Ostrowicz, U. Tamponi, Anton Poluektov, T. Schlüter, S. Sugihara, M. Starič, Y. Igarashi, M. Masuda, Dipanwita Dutta, A. Sugiyama, T. Kumita, M. Uchida, X. H. He, D. Cinabro, Philip Lewis, G. B. Mohanty, C. H. Li, Massimo Berger, B. H. Kim, Y. Yook, H. Yamamoto, L. K. Li, V.N. Zhilich, Y. Kato, V. Chobanova, Y. Kuroki, Satoshi Tanaka, D. Liventsev, Y. Arita, I. Jaegle, K. Miyabayashi, M. Lubej, G. Inguglia, I. Badhrees, Y. Koga, E. Nedelkovska, F. Breibeck, H. Park, J. Stypula, C. Kiesling, E. J. White, A. Bozek, P. Chang, G. S. Varner, Y.-T. Lai, K. Suzuki, P. Schonmeier, M. Iwabuchi, R. Mussa, H. B. Jeon, O. Grzymkowska, C. H. Wang, M. Grosse Perdekamp, R. Itoh, Jung-Hyun Kim, S. Wehle, T. Keck, S. Paul, L. Li Gioi, Y. Yamashita, C. Z. Yuan, Yukinori Sato, J. G. Shiu, M. Nayak, T. Bloomfield, A. Ishikawa, A. Drutskoy, S. E. Vahsen, A. Bay, C.-L. Hsu, T. Saito, S. Rummel, T. Matsuda, Yu Nakahama, M. Tanaka, T. Peng, G. Schnell, A. Rostomyan, Tsukasa Aso, P. Wang, H. Miyata, Y. Hoshi, M. Barrett, B. Bhuyan, Y.L. Han, A. Frey, H. Ye, P. Križan, T. Iijima, Jun Sasaki, H. G. Moser, M. Bračko, Y. Iwasaki, B. G. Fulsom, Peter Kodys, W. W. Jacobs, T. E. Browder, Y. J. Kwon, K. Nakamura, Ya-Qiu Jin, P. Hamer, K. Hayasaka, A. Bobrov, H. Hayashii, Hyunyong Kim, O. Schneider, K. Prasanth, M. Imamura, T. Nagamine, K. Trabelsi, P. Katrenko, T. Müller, J. Klucar, K. T. Kim, C. P. Shen, S. Di Carlo, Seok Kim, S. Okuno, B. Shwartz, Jamal Rorie, D. Getzkow, C. B. Van Hulse, I. Adachi, A. Ogawa, K. Negishi, T. Kuhr, D. Z. Besson, E. Ribežl, D. Santel, Phillip Urquijo, N. Sasao, Victoria Zhukova, V. Savinov, M. Danilov, H. Nakayama, D. Y. Kim, R. Gillard, R. Mizuk, Eberhard Widmann, J. F. Strube, Matthew Jones, M. Z. Wang, K. Kinoshita, M. Yamauchi, G. Bonvicini, Y. B. Li, Y. Teramoto, I. Tikhomirov, D. Mohapatra, J. B. Singh, A. Chen, K. Hara, S. K. Choi, Sanmay Ganguly, T. Uchida, Y. Ban, N. Zwahlen, Bruce Yabsley, L. Zhao, M. Heider, M. Rozanska, D. Kotchetkov, Y. Yusa, A. Vinokurova, S. Dubey, Rahul Kumar, J. Libby, R. Louvot, Y. Chao, G. N. Taylor, R. Glattauer, V.E. Shebalin, J. Haba, W. Bartel, S. Nishida, S. Al Said, K. Hoshina, Y. Seino, Y. Onuki, K. Vervink, Z. Drásal, Marko Petrič, M. T. Prim, K. Itagaki, Z. Q. Liu, C. Bookwalter, B. G. Cheon, H. J. Hyun, S. Uozumi, P. Smerkol, Tariq Aziz, X. L. Wang, D. Heffernan, T. Morii, C. Boulahouache, J. Hasenbusch, V. Chekelian, J. Li, V. M. Aulchenko, H. Guo, T.-A. Shibata, T. Horiguchi, Y. Ono, S. Koblitz, Seema Bahinipati, Y. Choi, H. Takeichi, K. J. Nath, S. Uno, C. Schwanda, P. Krokovny, M. T. Hedges, Samo Stanič, L.M. Zhang, E. Kurihara, A.E. Bondar, P.A. Lukin, T. Nakano, K. Dutta, A. Garmash, Daniel Greenwald, M. Takizawa, B. Reisert, Y. Sakai, J. Rauch, B. K. Pal, E. L. Barberio, M. Shapkin, Noritaka Shimizu, T. Hara, L. Santelj, J. Dalseno, Robin Wedd, K. M. Williams, V. Bansal, K. Belous, A. M. Bakich, S. Korpar, Jolanta Brodzicka, John Yelton, T. Ohshima, Z. Doležal, K. Chilikin, Y. J. Kim, N. Dash, S. Iwata, H. Ozaki, H. Nakano, C. Ng, K. H. Kang, K. Cho, K. Inami, M. Sumihama, A. Heller, M. D. Peters, Motoki Iwasaki, Y. Ushiroda, N. Taniguchi, Y. M. Goh, S. H. Lee, K. Prothmann, R. Pestotnik, N. Gabyshev, D. Červenkov, A. Abdesselam, M. Steder, M. E. Sevior, I. S. Lee, D. Matvienko, Y. Miyazaki, R. Sinha, P. K. Behera, Yasushi Nagasaka, B. Kronenbitter, Sumio Yamada, E. Kato, M. Leitgab, Tao Luo, K. Tanida, F. Tenchini, T. Sumiyoshi, A. Bala, D. Epifanov, Soumya D. Mohanty, C. Pulvermacher, Martin Ritter, Dmytro Levit, Z. Natkaniec, S. L. Blyth, T. Sanuki, Shigeki Hirose, K. K. Joo, Hirokazu Miyake, R. Seidl, Y. Guan, E. Solovieva, Norihito Muramatsu, M. Huschle, K. Sakai, Y. Watanabe, S. K. Kim, A.L. Sibidanov, H. Kichimi, M. C. Chang, K. S. Park, V. Bhardwaj, T. K. Pedlar, T. Tsuboyama, H. Palka, L. E. Piilonen, G. Pakhlova, J. Wiechczynski, R. Kulasiri, S. U. Kataoka, S. Yashchenko, A. Moll, S. L. Olsen, D. Joffe, T. Julius, Po-Hsun Chen, R. Chistov, A. Vossen, O. Seon, Frank Simon, D. Semmler, Y. Unno, K. F. Chen, R. Ayad, T. Nozaki, S. Uehara, M. N. Wagner, Peter Kvasnicka, A. B. Kaliyar, Sunmin Ryu, C. W. Park, E. Won, C. Oswald, H. Atmacan, P. Vanhoefer, E. Panzenböck, B. Golob, M. Schram, N. K. Nisar, H. K. Moon, J. S. Lange, M. Ziegler, K. Adamczyk, Y. Soloviev, W. S. Hou, K. Arinstein, Y. Mikami, Alexei Kuzmin, V. Vorobyev, Nagao Kobayashi, Y. F. Liu, C. Kleinwort, Z. P. Zhang, H. Sahoo, Tara Nanut, T. Uglov, Yoji Hasegawa, S. Y. Suzuki, Richard T. Kouzes, K. Sumisawa, D. M. Asner, S. Himori, Kevin Varvell, A. Matyja, Jason Crnkovic, T. Mori, H. Aihara, Y. Usov, Jyoti Prakash Biswal, C. Liu, H. Nakazawa, A. J. Schwartz, H. Farhat, J. B. Kim, T. Higuchi, S. Ogawa, V. Gaur, Y. S. Sohn, Ferdinando Giordano, M. Nakao, E. Waheed, S. McOnie, J. MacNaughton, and P. Kapusta
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Maximum likelihood, Electron–positron annihilation, 01 natural sciences, law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, Radiative transfer, Michel parameters, Statistical analysis, 010306 general physics, Collider, Lepton
Abstract: We present the first measurement of the Michel parameters η ‾ and ξκ in the radiative leptonic decay of the τ lepton using 703 fb-1 of data collected with the Belle detector at the KEKB e + e − collider. The Michel parameters are measured by an unbinned maximum likelihood fit to the kinematic information of e + e − → τ + τ − → ( π + π 0 ν ‾ ) ( l − ν ν ‾ γ ) ( l = e or μ ) . The preliminary values of the measured Michel parameters are η ‾ = − 2.0 ± 1.5 ± 0.8 and ξ κ = 0.6 ± 0.4 ± 0.2 , where the first error is statistical and the second is systematic.
Published: 2017

2. Study of Ωc0 and Ωc∗0 baryons at Belle

Author: Y. Iwasaki, Y. J. Kwon, Joowon Lee, O. Schneider, T. E. Browder, H. J. Hyun, M. Danilov, L. S. Peak, Vladimir Zhulanov, Y. Miyazaki, M. E. Sevior, A. Zupanc, M. Starič, J. H. Kang, M. Yamauchi, O. Nitoh, S. Eidelman, Vladislav Balagura, P. Pakhlov, D. Liventsev, H. K. Park, J. G. Shiu, Y. Sakai, K. Inami, G. S. Varner, A. Kuzmin, Y. Yamashita, E. Solovieva, Phillip Urquijo, W. S. Hou, H. Kichimi, R. Itoh, K. Arinstein, P. Chang, S. Ogawa, T. Lesiak, P. Wang, Yu. V. Usov, S. Nishida, M. Tanaka, P. Krokovny, O. Zyukova, Masashi Hazumi, X. L. Wang, K. Miyabayashi, S. H. Kyeong, A. Ishikawa, S. K. Choi, S. E. Lee, P. Križan, Y. I. Kim, S. Okuno, M. J. Lee, K. Kinoshita, H. Sahoo, E. Won, B. G. Cheon, M. Bračko, D. Heffernan, T. Uglov, T. Aushev, I. S. Cho, G. N. Taylor, Hirokazu Ishino, Y. Teramoto, Bruce Yabsley, A. M. Bakich, T. Ohshima, K. Senyo, M. Dash, C. H. Wang, U. Bitenc, H. Kawai, A. Bondar, T. Kawasaki, Y. Choi, J. S. Lange, J. Dalseno, I. Tikhomirov, S. Korpar, Jolanta Brodzicka, A. Chen, Yasushi Nagasaka, Samo Stanič, M. Shapkin, Y. J. Kim, Rakesh Kumar, H. Palka, L. E. Piilonen, G. Pakhlova, R. Chistov, T. Sumiyoshi, S. Noguchi, S. Uehara, H. Ha, N. Katayama, R. Mizuk, Y. Unno, I. Adachi, H. Miyata, Y. Hoshi, K. Hayasaka, D. H. Kah, T. Zivko, Y. B. Hsiung, Z. P. Zhang, H. O. Kim, A. Matyja, H. Aihara, C. Liu, M. Nakao, Y. Watanabe, S. McOnie, H. J. Kim, Motoki Iwasaki, S. Uno, and C. Schwanda
Subjects: Nuclear physics, Baryon, Physics, Nuclear and High Energy Physics, Particle physics, KEKB, 010308 nuclear & particles physics, law, 0103 physical sciences, 010306 general physics, Collider, 01 natural sciences, law.invention
Abstract: We report results from a study of the charmed double strange baryons Ωc 0 and Ωc * 0 at Belle. The Ωc 0 is reconstructed using the Ωc 0 → Ω- π+ decay mode, and its mass is measured to be (2693.6 ± 0.3-1.5 +1.8) MeV / c2. The Ωc * 0 baryon is reconstructed in the Ωc 0 γ mode. The mass difference MΩc* 0 - MΩc0 is measured to be (70.7 ± 0.9-0.9 +0.1) MeV / c2. The analysis is performed using 673 fb-1 of data on and near the Υ{hooked} (4 S) collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. © 2008 Elsevier B.V. All rights reserved.
Published: 2009

3. Study of intermediate two-body decays in B¯0→Σc(2455)0p¯π+

Author: A. Ishikawa, C. W. Park, P. Križan, J. H. Kang, Joowon Lee, A. M. Bakich, Z. Natkaniec, T. Ohshima, D. Liventsev, T. Iijima, J. G. Shiu, H. Nakazawa, T. E. Browder, Y. Watanabe, A. Zupanc, J. B. Singh, G. S. Varner, A. Somov, N. Gabyshev, O. Nitoh, M. Tanaka, I. Bedny, Phillip Urquijo, B. Shwartz, R. Itoh, K. Inami, U. Bitenc, D. H. Kah, E. Won, P. Chang, S. W. Lin, M. Nakao, P. Wang, Yu. V. Usov, S. Eidelman, T. Zivko, S. McOnie, M. Z. Wang, Y. Unno, H. J. Kim, D. Heffernan, O. Zyukova, Rakesh Kumar, H. Miyata, A. Kuzmin, I. S. Cho, Y. Hoshi, H. J. Hyun, V.N. Zhilich, G. N. Taylor, D. Epifanov, S. Ogawa, S. Uehara, H. Ha, K. Hayasaka, H. Park, A. Bozek, L. E. Piilonen, N. Katayama, B. G. Cheon, Y. Miyazaki, M. Dash, Masashi Hazumi, Anton Poluektov, S. Okuno, K. S. Park, I. Adachi, V. M. Aulchenko, A. Matyja, C. H. Wang, Vladimir Zhulanov, S. Nishida, H. K. Park, Y. Yamashita, S. Uno, H. Sahoo, Vladislav Balagura, M. E. Sevior, T. Aushev, M. Shapkin, K. Senyo, K. Miyabayashi, X. L. Wang, H. Aihara, V.E. Shebalin, R. Chistov, Samo Stanič, T. Kawasaki, Y. J. Kim, Y. I. Kim, Y. Teramoto, A. Bondar, S. Korpar, T. Sumiyoshi, W. S. Hou, Y. Chao, A. Vinokurova, K. Arinstein, R. Pestotnik, M. Yamauchi, P. Krokovny, H. Kichimi, Z. P. Zhang, Y. Sakai, T. Lesiak, Y. Choi, H. O. Kim, M. J. Lee, J. Dalseno, M. Bračko, Motoki Iwasaki, L. S. Peak, M. Starič, Y. Iwasaki, Y. J. Kwon, O. Schneider, and H. Kawai
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Electron–positron annihilation, Analytical chemistry, Resonance, 01 natural sciences, Baryon, Nuclear physics, KEKB, 0103 physical sciences, B meson, Invariant mass, 010306 general physics
Abstract: We present results of a detailed study of the three-body over(B, )0 → Σc (2455)0 over(p, ) π+ decay. A significant enhancement of signal events is observed in the over(p, ) π+ invariant mass distribution near 1.5 GeV / c2 that is consistent with the presence of an intermediate baryonic resonance over(N, )0, where over(N, )0 is the over(N, ) (1440)0 P11 or over(N, ) (1535)0 S11 state, or an admixture of the two states. We measure the product B (over(B, )0 → Σc (2455)0 over(N, )0) × B (over(N, )0 → over(p, ) π+) = (0.80 ± 0.15 (stat .) ± 0.14 (syst .) ± 0.21) × 10-4, where the last error is due to the uncertainty in B (Λc + → p K- π+). The significance of the signal is 6.1 standard deviations. This analysis is based on a data sample of 357 fb-1, accumulated at the Υ{hooked} (4 S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider. © 2008 Elsevier B.V.
Published: 2008

4. New search for τ→μγ and τ→eγ decays at Belle

Author: S. K. Kim, I. Bizjak, H. Miyake, F. Mandl, S. E. Lee, T. Gershon, S. L. Olsen, Z. P. Zhang, K. Hayasaka, O. Nitoh, K. Miyabayashi, J. Brodzicka, A. Chen, H. Hayashii, R. Chistov, T. Lesiak, R. Itoh, T. Matsumoto, C. C. Kuo, S. W. Lin, N. Gabyshev, H. Miyata, P. Krokovny, X. C. Tian, K. Abe, Y. Kozakai, A. Sokolov, Y. Yamashita, C. C. Wang, W. S. Hou, T. Sumiyoshi, A. Kuzmin, L. S. Peak, P. Pakhlov, H. Aihara, D. Liventsev, H. Stoeck, M. E. Sevior, A. Imoto, Y. Teramoto, H. Sahoo, Y. Iwasaki, S. Okuno, N. Soni, I. Tikhomirov, Y. Usov, K. Senyo, G. R. Moloney, A. Bay, T. Schietinger, A.J. Schwartz, J. Haba, J. B. Singh, B. G. Cheon, O. Schneider, Q. L. Xie, S. Hou, S. Stanič, Y. Miyazaki, H. Nakazawa, B. Golob, N. Satoyama, J. H. Kang, H. Ha, A. Ishikawa, K. Arinstein, D. Heffernan, M. Yamauchi, S. Villa, W. T. Chen, T. Hokuue, T. Mori, G. N. Taylor, Y. Chao, K. S. Park, S. Eidelman, M. Nakao, Y. Nagasaka, A. Poluektov, T. Tsukamoto, J. Dalseno, H. Ozaki, E. Barberio, T. Hara, K. Inami, Y. Watanabe, T. Kawasaki, H.K Park, A. Bozek, S. Nishida, K. Tamai, S. Fratina, N. Tamura, M. Hazumi, Z. Natkaniec, P. Križan, A. Go, V. Aulchenko, D. Anipko, K. Belous, A. Yamaguchi, Y. Onuki, S. Uno, Hiroyuki Kaji, M. Starič, T. Uglov, K. Ueno, Y. K. Choi, Y. Sakai, V. Zhulanov, M. Shapkin, R. Kulasiri, H. R. Khan, A. Zupanc, Y. J. Kim, U. Bitenc, L. E. Piilonen, P. Chang, I. Adachi, S. Ogawa, A. Bondar, Masayuki Tanaka, M. C. Chang, Y. Hoshi, A. Drutskoy, Y. J. Kwon, M. Iwasaki, B. D. Yabsley, Y. Choi, C. H. Wang, I. Bedny, S. Uehara, H. Kichimi, F. Takasaki, V. Zhilich, A. Vinokurova, M. Danilov, P. Urquijo, A. Somov, R. Seidl, T. Tsuboyama, D. Epifanov, M. Dash, R. Kumar, T. Iijima, A. M. Bakich, T. Ohshima, G. Varner, K. Ikado, H. Shibuya, B. Shwartz, Kazuhiko Hara, H. Kawai, Michael J. Lee, E. Won, R. Pestotnik, G. Pakhlova, and M. Bračko
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Electron–positron annihilation, Lepton number, Belle experiment, Lepton
Abstract: We report on a search for the lepton flavor violating τ−→μ−γ and τ−→e−γ decays based on 535 fb−1 of data accumulated at the Belle experiment. No signal is found and we set 90% confidence level upper limits on the branching ratios B(τ−→μ−γ)
Published: 2008

5. A study of γγ→KS0KS0 production at energies from 2.4 to 4.0 GeV at Belle

Author: W.T. Chen, K. Abe, I. Adachi, H. Aihara, D. Anipko, V. Aulchenko, A.M. Bakich, E. Barberio, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T.E. Browder, M.-C. Chang, P. Chang, Y. Chao, A. Chen, B.G. Cheon, R. Chistov, Y. Choi, Y.K. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, A. Go, H. Ha, M. Hazumi, D. Heffernan, T. Higuchi, T. Hokuue, Y. Hoshi, W.-S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, H. Kaji, J.H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H.O. Kim, Y.J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C.C. Kuo, A. Kuzmin, Y.-J. Kwon, S.E. Lee, T. Lesiak, S.-W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, S. McOnie, T. Medvedeva, H. Miyata, Y. Miyazaki, R. Mizuk, G.R. Moloney, T. Mori, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S.L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C.W. Park, R. Pestotnik, L.E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, K. Senyo, M.E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, J.B. Singh, A. Sokolov, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, S.Y. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G.N. Taylor, Y. Teramoto, X.C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, Y. Usov, G. Varner, K. Vervink, S. Villa, C.C. Wang, C.H. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B.D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C.C. Zhang, Z.P. Zhang, V. Zhilich, and A. Zupanc
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Angular range, Range (particle radiation), Meson, law.invention, Nuclear physics, KEKB, law, Center of mass, Collider, Positron annihilation
Abstract: KS 0 KS 0 production in two-photon collisions has been studied using a 397.6 fb-1 data sample collected with the Belle detector at the KEKB e+ e- collider. For the first time the cross sections are measured in the two-photon center-of-mass energy range between 2.4 GeV and 4.0 GeV and angular range | cos θ* | < 0.6. Combining the results with measurements of γ γ → K+ K- from Belle, we observe that the cross section ratio σ (KS 0 KS 0) / σ (K+ K-) decreases from ∼0.13 to ∼0.01 with increasing energy. Signals for the χc 0 and χc 2 charmonium states are also observed. © 2007 Elsevier B.V. All rights reserved.
Published: 2007

6. Belle SVD2 vertex detector

Author: H. Aihara, Y. Asano, T. Aso, A. Bakich, M. Barbero, T. Browder, M.C. Chang, Y. Chao, K.F. Chen, S. Chidzik, A. Chouvikov, J. Dalseno, R. Dowd, R. Fernholz, S. Fratina, M. Friedl, H. Fujii, Y. Fujiyama, J. Haba, K. Hara, T. Hara, B. Harrop, T. Haruyama, K. Hayashi, M. Hazumi, D. Heffernan, T. Higuchi, A. Igarashi, Y. Igarashi, H. Ikeda, H. Ishino, S. Iwaida, T. Kameshima, P. Kapusta, K. Kasami, T. Kawasaki, A. Kibayashi, S. Koike, S. Korpar, P. Križan, H. Kurashiro, A. Kusaka, T. Lesiak, D. Marlow, H. Matsumoto, Y. Mikami, H. Miyake, G.R. Moloney, Z. Natkaniec, S. Nozaki, R. Ohkubo, S. Okuno, S. Ono, Y. Onuki, W. Ostrowicz, H. Ozaki, L. Peak, M. Pernicka, M. Rosen, M. Rozanska, N. Sato, S. Schmid, J. Schümann, T. Shibata, R. Stamen, S. Stanič, H. Steininger, K. Sumisawa, J. Suzuki, H. Tajima, O. Tajima, K. Takahashi, F. Takasaki, N. Tamura, M. Tanaka, G.N. Taylor, K. Trabelsi, T. Tsuboyama, K. Uchida, K. Ueno, Y. Ushiroda, S. Vahsen, G. Varner, K. Varvell, Y.S. Velikzhanin, C.C. Wang, M.Z. Wang, M. Watanabe, Y. Watanabe, H. Yamamoto, Y. Yamashita, M. Yamauchi, R. Yang, Y. Yasu, T. Ziegler, and D. Žontar
Subjects: Vertex (graph theory), Physics, Nuclear and High Energy Physics, Particle physics, Belle experiment, Silicon vertex detector, law.invention, Nuclear physics, KEKB, Radiation tolerance, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Vertex detector, Polar coordinate system, Collider, Instrumentation
Abstract: A new silicon vertex detector for the Belle experiment has been in operation at the high-luminosity asymmetric energy electron–positron collider KEKB since October 2003. It provides a larger polar angle acceptance, a better vertex resolution and a higher radiation tolerance than the previous one. The obtained performances indicate that the SVD2 works reliably, in very good agreement with expectations.
Published: 2006

7. Search for neutrinoless decays τ→ℓhh and τ→ℓV0

Author: Y. Yusa, K. Abe, I. Adachi, H. Aihara, Y. Asano, V. Aulchenko, A. Bay, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, T.E. Browder, A. Chen, B.G. Cheon, R. Chistov, Y. Choi, Y.K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, A. Gorišek, H.C. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, Y. Hoshi, W.-S. Hou, T. Iijima, K. Ikado, K. Inami, R. Itoh, M. Iwasaki, Y. Iwasaki, J.H. Kang, H. Kawai, T. Kawasaki, H.R. Khan, H. Kichimi, S.K. Kim, S. Korpar, P. Križan, R. Kulasiri, C.C. Kuo, A. Kuzmin, Y.-J. Kwon, T. Lesiak, S.-W. Lin, D. Liventsev, G. Majumder, T. Matsumoto, W. Mitaroff, Y. Miyazaki, R. Mizuk, T. Nagamine, E. Nakano, Z. Natkaniec, S. Nishida, S. Ogawa, T. Ohshima, T. Okabe, S.L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, H. Palka, R. Pestotnik, L.E. Piilonen, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, C. Schwanda, R. Seidl, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, A. Sokolov, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, G.N. Taylor, Y. Teramoto, X.C. Tian, T. Tsukamoto, S. Uehara, S. Uno, Y. Usov, G. Varner, S. Villa, E. Won, B.D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, and Z.P. Zhang
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Muon, Meson, Electron–positron annihilation, Hadron, Electron, Neutral vector, Lepton
Abstract: We have searched for neutrinoless τ lepton decays into lhh or l V0, where l stands for an electron or muon, h for a charged light hadron, π or K, and V0 for a neutral vector meson, ρ0, K* (892)0 and φ{symbol}, using a 158 fb-1 data sample collected with the Belle detector at the KEKB e+ e- collider. Since the number of events observed are consistent with the expected background, we set upper limits on the branching fractions in the range of (1.6 - 8.0) × 10-7 for various decay modes at the 90% confidence level. © 2006 Elsevier B.V. All rights reserved.
Published: 2006

8. Search for lepton flavor violating τ− decays with a KS0 meson

Author: Y. Miyazaki, K. Abe, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, A.M. Bakich, M. Barbero, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T.E. Browder, A. Chen, W.T. Chen, R. Chistov, Y. Choi, Y.K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, S. Eidelman, D. Epifanov, N. Gabyshev, T. Gershon, A. Gorišek, H. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J.H. Kang, P. Kapusta, H. Kawai, H.R. Khan, H. Kichimi, H.O. Kim, S. Korpar, P. Krokovny, R. Kumar, C.C. Kuo, A. Kuzmin, Y.-J. Kwon, J. Lee, T. Lesiak, S.-W. Lin, F. Mandl, T. Matsumoto, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, Y. Onuki, H. Ozaki, H. Palka, H. Park, L.S. Peak, R. Pestotnik, L.E. Piilonen, A. Poluektov, Y. Sakai, T. Schietinger, O. Schneider, R. Seidl, K. Senyo, M.E. Sevior, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, J.B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, K. Sumisawa, T. Sumiyoshi, F. Takasaki, N. Tamura, M. Tanaka, G.N. Taylor, Y. Teramoto, X.C. Tian, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, P. Urquijo, Y. Usov, G. Varner, S. Villa, C.C. Wang, C.H. Wang, Y. Watanabe, E. Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, L.M. Zhang, and V. Zhilich
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Meson, Electron–positron annihilation, Supersymmetry, Flavor, Lepton
Abstract: We have searched for the lepton flavor violating decays τ- → l- KS 0 (l = e or μ), using a data sample of 281 fb-1 collected with the Belle detector at the KEKB e+ e- asymmetric-energy collider. No evidence for a signal was found in either of the decay modes, and we set the following upper limits for the branching fractions: B (τ- → e- KS 0) < 5.6 × 10-8 and B (τ- → μ- KS 0) < 4.9 × 10-8 at the 90% confidence level. These results improve the previously published limits set by the CLEO Collaboration by factors of 16 and 19, respectively. © 2006 Elsevier B.V. All rights reserved.
Published: 2006

9. 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

10. Search for lepton and baryon number violating τ− decays into Λ¯π− and Λπ−

Author: Y. Miyazaki, K. Abe, I. Adachi, H. Aihara, K. Arinstein, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A.M. Bakich, V. Balagura, E. Barberio, 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, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, L.Y. Dong, A. Drutskoy, S. Eidelman, Y. Enari, D. Epifanov, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, A. Gorišek, H.C. Ha, K. Hayasaka, H. Hayashii, M. Hazumi, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, 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, G. Leder, S.E. Lee, T. Lesiak, S.-W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, G.R. Moloney, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S.L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C.W. Park, N. Parslow, R. Pestotnik, L.E. Piilonen, A. Poluektov, N. Root, M. Rozanska, Y. Sakai, N. Sato, N. Satoyama, K. Sayeed, T. Schietinger, O. Schneider, M.E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, A. Somov, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S.Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, G.N. Taylor, Y. Teramoto, X.C. Tian, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, S. Uno, P. Urquijo, G. Varner, S. Villa, C.C. Wang, C.H. Wang, Y. Watanabe, E. Won, Q.L. Xie, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, J. Zhang, L.M. Zhang, Z.P. Zhang, V. Zhilich, and D. Zürcher
Subjects: Physics, Baryon, Nuclear physics, Nuclear and High Energy Physics, Particle physics, KEKB, Electron–positron annihilation, Baryon number, Lepton
Abstract: We have searched for τ lepton decays, τ-→Λπ- and τ-→Λπ-, that simultaneously violate the conservation of the lepton (L) and baryon (B) number using a data sample of 154 fb-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. No evidence for a signal was found in either of the decay modes and we set the following upper limits for the branching fractions: B(τ-→Λπ-)
Published: 2006

11. Time-dependent CP violation effects in partially reconstructed B0→D∗∓π± decays

Author: H. Miyata, Y. Hoshi, C. C. Wang, N. C. Hastings, K. Hayasaka, N. Kent, S. Fratina, S. Suzuki, F.J. Ronga, Z. P. Zhang, M. C. Chang, E. Nakano, M. Dash, Y. Iwasaki, Y. J. Kwon, N. Tamura, T. Matsumoto, I. Adachi, Gobinda Majumder, A. Ishikawa, A. Bay, F. Takasaki, C. W. Park, I. Bedny, J. Li, T. Tsukamoto, O. Schneider, B. Golob, S. Villa, K. Inami, A. Imoto, Y. Chao, W. Ostrowicz, D. Žontar, A. Yamaguchi, A. M. Bakich, H. Miyake, T. Ohshima, S. W. Lin, D. Liventsev, Byung Gu Cheon, S. Cole, Simon Blyth, A. Somov, K. Trabelsi, H. R. Khan, Anton Poluektov, A. Bondar, T. Iijima, M. Nakao, S. M. Kim, Jolanta Brodzicka, S. Uehara, L. S. Peak, Heyoung Yang, I. Bizjak, W. A. Mitaroff, G. S. Varner, N. Gabyshev, P. Krokovny, H. Palka, J. MacNaughton, N. Katayama, H. Hayashii, S. Bahinipati, Daniel Robert Marlow, T. Hokuue, S. Uno, C. Schwanda, L. E. Piilonen, T. Schietinger, H. J. Kim, J. H. Kang, R. Itoh, Hiroyuki Sagawa, H. Kichimi, A. Garmash, A. Chen, Shaji Kumar, Tapas Sarangi, K. Kinoshita, Hitoshi Yamamoto, Kevin Varvell, Phillip Urquijo, A. Chuvikov, M. Starič, K. Miyabayashi, J. Dalseno, M. Yamauchi, Hirokazu Ishino, T. Aushev, T. Tsuboyama, T. Lesiak, Kazuo Abe, B. D. Yabsley, Y. Asano, P. Kapusta, J. Dragic, S. Okuno, H. Aihara, D. Mohapatra, H. Kawai, S. L. Olsen, W. S. Hou, C. H. Wang, Antonio Limosani, R. Pestotnik, G. R. Moloney, T. Sumiyoshi, Jia-ju Zhang, Noriaki K. Sato, Y. Yamashita, Y. Sakai, K. Senyo, T. Gershon, T. Kawasaki, G. Leder, Andrej Gorišek, S. Stanič, N. Parslow, Long Zhang, F. Mandl, S. R. Hou, T. Nagamine, U. Bitenc, T. Nozaki, Y. Teramoto, K. Tamai, M. E. Sevior, H. Nakazawa, G. Gokhroo, T. Okabe, H. Shibuya, M. Watanabe, M. Tanaka, A. J. Schwartz, M. Bračko, W. T. Chen, Y. Mikami, T. Shibata, P. Chang, X. C. Tian, Osamu Tajima, Q. L. Xie, J. Haba, O. Nitoh, A. Kuzmin, S. Ogawa, K. Sumisawa, Masashi Hazumi, Rainer Stamen, T. Uglov, L. Hinz, S. Nishida, T. E. Browder, M. Danilov, C. C. Kuo, K. Hara, S. Eidelman, P. Pakhlov, A. Bozek, J. B. Singh, S. K. Choi, J. Ying, Motoki Iwasaki, Y. Ushiroda, Y. Choi, J. S. Kang, and S. Banerjee
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, Resonance, law.invention, Nuclear physics, Pion, KEKB, law, CP violation, High Energy Physics::Experiment, B meson, Nuclear Experiment, Collider
Abstract: We report measurements of time-dependent decay rates for B 0 → D ∗ ∓ π ± decays and extraction of CP violation parameters related to ϕ 3 . We use a partial reconstruction technique, whereby signal events are identified using information only from the primary pion and the charged pion from the decay of the D ∗ ∓ . The analysis uses 140 fb −1 of data accumulated at the ϒ ( 4 S ) resonance with the Belle detector at the KEKB asymmetric-energy e + e − collider. We measure the CP violation parameters S + = 0.035 ± 0.041 ( stat ) ± 0.018 ( syst ) and S − = 0.025 ± 0.041 ( stat ) ± 0.018 ( syst ) .
Published: 2005

12. Measurement of γγ→pp¯ production at Belle

Author: S. Nishida, Simon Blyth, F. Mand, J. H. Kang, H. Palka, L. E. Piilonen, V.N. Zhilich, T. Schietinger, W. A. Mitaroff, R. Kulasiri, J. Dalseno, G. Leder, H. Nakazawa, G. Gokhroo, R. Chistov, H. J. Kim, P. Krokovny, M. Iwasaki, Kazuo Abe, B. D. Yabsley, W. S. Hou, Masashi Hazumi, A. Go, E. Nakano, M. Starič, A. Ishikawa, A. Bay, Y. Hoshi, V. M. Aulchenko, Q. L. Xie, T. Aushev, Long Zhang, J. Haba, Y. Asano, P. Kapusta, S. Okuno, Osamu Tajima, F. Takasaki, A. Yamaguchi, Timothy Gershon, Jasvinder A. Singh, S. W. Lin, T. Uglov, K. Tamai, A. Matyja, A. Bondar, M. E. Sevior, M. Dash, T. Sumiyoshi, K. Hayasaka, K. Senyo, Andrej Gorišek, W. Ostrowicz, M. Danilov, C. C. Kuo, T. Kawasaki, S. Stanič, S. Uno, O. Nitoh, K. Inami, H. Kawai, S. Fratina, Gobinda Majumder, Y. Teramoto, S. Y. Suzuki, T. Tsukamoto, D. Liventsev, Akira Sugiyama, Hiroyuki Sagawa, A. Somov, K. Ueno, N. Tamura, H. Park, A. Bozek, I. Bizjak, T. Matsumoto, Yasushi Nagasaka, G. S. Varner, Hiroaki Aihara, Anton Poluektov, R. Itoh, J. Ying, Yuji Enari, Noriaki K. Sato, Rainer Stamen, R. Mizuk, Byung Gu Cheon, H. Kichimi, H. Shibuya, S. Ogawa, W. T. Chen, M. Watanabe, U. Bitenc, M. C. Chang, Zhenyu Zhang, H. Hayashii, T. Lesiak, Y. Yamashita, P. Chang, Y. J. Kwon, D. Zürcher, J. MacNaughton, A. Drutskoy, B. Shwartz, O. Schneider, S. M. Kim, A. Chuvikov, X. C. Tian, G. N. Taylor, D. Žontar, C. C. Wang, M. Nakao, Heyoung Yang, T. Hokuue, C. H. Wang, H. R. Khan, L. S. Peak, M. Yamauchi, Y. Sakai, S. R. Hou, A. Chen, R. Pestotnik, I. Bedny, J. S. Kang, S. Eidelman, N. Soni, Takehiko Mori, G. R. Moloney, Y. Choi, A.S. Kuzmin, S. Cole, S. L. Olsen, I. Adachi, S. Villa, H. Miyake, Toru Iijima, S. Uehara, S. Bahinipati, Suneel Kumar, M. Bračko, A. Imoto, A. M. Bakich, Z. Natkaniec, T. Ohshima, and N. Gabyshev
Subjects: Physics, Nuclear and High Energy Physics, Angular range, 010308 nuclear & particles physics, Branching fraction, 01 natural sciences, law.invention, Nuclear physics, Angular distribution, KEKB, law, 0103 physical sciences, Center of mass, 010306 general physics, Collider, Positron annihilation
Abstract: A high precision study of the process γγ→pp has been performed using a data sample of 89 fb-1 collected with the Belle detector at the KEKB e+e- collider. The cross section of pp production has been measured at two-photon center-of-mass (c.m.) energies between 2.025 and 4.0 GeV and in the c.m. angular range of |cosθ*
Published: 2005

13. 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

14. 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

15. Study of the baryon–antibaryon low-mass enhancements in charmless three-body baryonic B decays

Author: M. H. Tanaka, Hiroyuki Sagawa, H. Nakazawa, G. Gokhroo, N. Soni, T. Aushev, Phillip Urquijo, H. J. Kim, L. Hinz, Timothy Gershon, Osamu Tajima, S. M. Kim, O. Nitoh, H. Kawai, S. Nishida, Hiroaki Aihara, H. Miyata, Rainer Stamen, S. L. Olsen, N. Katayama, V.A. Sidorov, V.N. Zhilich, Y. Hoshi, I. Bedny, J. Li, N. Tamura, Zhenyu Zhang, J. S. Kang, W. A. Mitaroff, Y. Sakai, B. Shwartz, Yasushi Nagasaka, Youngjoon Kwon, S. K. Choi, A. Imoto, A. M. Bakich, Z. Natkaniec, T. Ohshima, M. Iwasaki, A. Drutskoy, J. Schümann, K. Hayasaka, S. Cole, D. Žontar, L. S. Peak, J. H. Kang, N. Gabyshev, R. Mizuk, P. Krokovny, D. Liventsev, S. Eidelman, T. Sumiyoshi, M. Dash, J. Ying, H. Ozaki, N. Parslow, Kevin Varvell, H. Palka, Jolanta Brodzicka, J. Dalseno, Seong Keun Kim, L. E. Piilonen, T. Schietinger, V. M. Aulchenko, I. Bizjak, B. Golob, G. S. Varner, M. Starič, Y. B. Hsiung, A. Ishikawa, R. Pestotnik, A.S. Kuzmin, A. Matyja, E. Nakano, T. E. Browder, S. E. Lee, F. Takasaki, C. W. Park, P. Križan, R. Itoh, A. Yamaguchi, W. S. Hou, Y.-J. Lee, Jasvinder A. Singh, S. W. Lin, M. C. Chang, Y. Iwasaki, G. R. Moloney, A. Chen, Long Zhang, Suneel Kumar, F. Fang, M. Bračko, C. C. Wang, O. Schneider, A. Somov, S. Fratina, Kai-Feng Chen, A. Bozek, T. Matsumoto, H. Shibuya, K. Senyo, T. Kawasaki, K. Kinoshita, S. Stanič, M. Watanabe, A. Chuvikov, H. Kichimi, Y. Yamashita, M. Danilov, C. C. Kuo, T. Nagamine, J. MacNaughton, T. L. Kuo, S. Uno, T. Tsukamoto, Byung Gu Cheon, S. R. Hou, K. Inami, C. H. Wang, M. Yamauchi, H. Miyake, Toru Iijima, S. Villa, S. Uehara, X. C. Tian, S. Bahinipati, J. Haba, Y. Chao, H. R. Khan, M. Nakao, G. Leder, F. Mandl, K. Tamai, M. E. Sevior, N.I. Root, W. Ostrowicz, K. Ueno, W. T. Chen, T. Shibata, P. Chang, Yuji Enari, T. Lesiak, Q. L. Xie, Kazuo Abe, B. D. Yabsley, Y. Asano, Andrej Gorišek, Y. Teramoto, T. Okabe, Heyoung Yang, T. Hokuue, R. Chistov, Samo Korpar, Meng Wang, Noriaki K. Sato, U. Bitenc, S. Ogawa, K. Sumisawa, Masashi Hazumi, and T. Uglov
Subjects: Nuclear physics, Baryon, Physics, High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Particle physics, Angular distribution, Web of science, Electron–positron annihilation, FOS: Physical sciences, Low Mass, High Energy Physics - Experiment
Abstract: The angular distributions of the baryon-antibaryon low-mass enhancements seen in the charmless three-body baryonic B decays B+ -> p pbar K+, B0 -> p pbar Ks, and B0 -> p Lambdabar pi- are reported. A quark fragmentation interpretation is supported, while the gluonic resonance picture is disfavored. Searches for the Theta+ and Theta++ pentaquarks in the relevant decay modes and possible glueball states G with 2.2 GeV/c2 < M-ppbar < 2.4 GeV/c2 in the ppbar systems give null results. We set upper limits on the products of branching fractions, B(B0 -> Theta+ p)\times B(Theta+ -> p Ks) < 2.3 \times 10^{-7}, B(B+ -> Theta++ pbar) \times B(Theta++ -> p K+) < 9.1 \times 10^{-8}, and B(B+ -> G K+) \times B(G -> p pbar) < 4.1 \times 10^{-7} at the 90% confidence level. The analysis is based on a 140 fb^{-1} data sample recorded on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider., 14 pages, 13 figure files, update of hep-ex/0409010 for journal submisssion
Published: 2005

16. Spectra of prompt electrons from decays of B+ and B0 mesons and ratio of inclusive semielectronic branching fractions

Author: N. Tamura, D. Žontar, F. Mandl, S. Uno, Y. Iwasaki, E. Nakano, Y. Sakai, Jie Zhang, Y. J. Kwon, T. E. Browder, C. Schwanda, M. E. Sevior, Patrick Koppenburg, S. M. Kim, O. Schneider, Osamu Tajima, W. Ostrowicz, G. R. Moloney, M. Z. Wang, K. Kinoshita, H. Kawai, O. Nitoh, T. Aushev, C. H. Wang, H. Palka, Masashi Hazumi, S. Suzuki, S. R. Hou, A. Ishikawa, Yasushi Nagasaka, L. E. Piilonen, T. Schietinger, A. Yamaguchi, Jasvinder A. Singh, S. W. Lin, Antonio Limosani, W. S. Hou, A. Bay, S. E. Lee, T. Nozaki, Hiroaki Aihara, X. C. Tian, J. S. Lange, K. S. Park, F. Takasaki, A. Chuvikov, C. W. Park, J. Haba, R. Mizuk, Long Zhang, U. Bitenc, Rainer Stamen, H. Kichimi, A. Go, Kazuo Abe, B. D. Yabsley, T. Hara, Y. Asano, P. Kapusta, S. Okuno, M. Nakao, Gobinda Majumder, M. Starič, Zhenyu Zhang, I. Adachi, M. Rozanska, T. Uglov, S. L. Olsen, Takuya Higuchi, T. Tsukamoto, D. Liventsev, C. C. Wang, J. H. Kang, S. K. Choi, A. Garmash, H. Shibuya, A. Bondar, A. Drutskoy, J. Dalseno, M. Watanabe, Y. Teramoto, K. Ueno, K. Inami, Semen Eidelman, M. Akatsu, T. Okabe, S. Korpar, Jolanta Brodzicka, V. Eiges, Y. Hoshi, Heyoung Yang, J. MacNaughton, A. Somov, G. S. Varner, T. J. Gershon, M. H. Tanaka, T. Hokuue, G. Gokhroo, Y. Yamashita, Hiroyuki Sagawa, W. T. Chen, R. Chistov, T. Sumiyoshi, D. Mohapatra, Y. Watanabe, Yuji Enari, N. Gabyshev, A. M. Bakich, R. Itoh, H. J. Kim, Tapas Sarangi, Jung-Hyun Kim, Kevin Varvell, N. Parslow, S. Ogawa, H. Miyata, Byung Gu Cheon, S. Cole, A. Matyja, Ilija Bizjak, H. Miyake, T. Lesiak, V.N. Zhilich, J. Ying, P. Krokovny, S. H. Lee, Kai-Feng Chen, Simon Blyth, S. Semenov, W. A. Mitaroff, H. Hayashii, S. Fratina, Young-Il Choi, K. Sumisawa, S. Y. Suzuki, T. Kawasaki, J. Schümann, K. Hayasaka, T. Nagamine, M. Dash, T. Matsumoto, S. Stanič, R. Pestotnik, Akira Sugiyama, B. Golob, Toru Iijima, Y. Choi, S. Uehara, N. Katayama, Y. Chao, Rolf Seuster, A. Chen, J. S. Kang, I. Bedny, J. Li, S. Banerjee, Y. Yusa, N. Soni, Y. Ban, M. Yamauchi, M. Danilov, C. C. Kuo, L. Hinz, S. Nishida, M. Bračko, H. Park, A. Imoto, Z. Natkaniec, A. Bozek, and T. Ohshima
Subjects: Semileptonic decay, Nuclear physics, Physics, Nuclear and High Energy Physics, KEKB, Meson, High Energy Physics::Phenomenology, High Energy Physics::Experiment, B meson, Electron, Rest frame, Branching (polymer chemistry), Spectral line
Abstract: We present spectra of prompt electrons from decays of neutral and charged B mesons. The results are based on 140 fb −1 of data collected by the Belle detector on the ϒ ( 4 S ) resonance at the KEKB e + e − asymmetric collider. We tag ϒ ( 4 S ) → B B ¯ events by reconstructing a B meson in one of several hadronic decay modes; the semileptonic decay of the other B meson is inferred from the presence of an identified electron. We obtain for charged and neutral B mesons the partial rates of semileptonic decay, to electrons with momentum greater than 0.6 GeV / c in the B rest frame, and their ratio b + / b 0 = 1.08 ± 0.05 ± 0.02 , where the first and second errors are statistical and systematic, respectively.
Published: 2005

17. Measurement of the γγ→π+π− and γγ→K+K− processes at energies of 2.4–4.1 GeV

Author: N. Soni, Takehiko Mori, Y. Ban, E. Nakano, Y. Sakai, D. Epifanov, N. Tamura, K. Inami, A. Yamaguchi, A. Imoto, A. M. Bakich, Z. Natkaniec, T. Ohshima, X. C. Tian, J. S. Kang, S. R. Hou, Jasvinder A. Singh, S. W. Lin, N. Gabyshev, H. Hayashii, S. Banerjee, M. Nakao, S. L. Olsen, Y. Yusa, S. Eidelman, J. Ying, D. Žontar, M. H. Tanaka, V. M. Aulchenko, G. Leder, Y. Choi, T. Iijima, Hiroyuki Sagawa, A.S. Kuzmin, F. Mandl, H. R. Khan, S. Nishida, Zhenyu Zhang, Osamu Tajima, S. Blyth, R. Pestotnik, W. Ostrowicz, A. Drutskoy, B. Shwartz, T. Aushev, O. Nitoh, M. Iwasaki, Kazuo Abe, B. D. Yabsley, Y. Asano, S. Okuno, M. Yamauchi, Seong Keun Kim, P. Krokovny, T. J. Gershon, Hiroaki Aihara, Y. Watanabe, Yuji Enari, H. Kichimi, S. Villa, P. Pakhlov, Rainer Stamen, M. Bračko, A. Chen, Y. Teramoto, A. Bondar, T. Okabe, S. Korpar, H. Park, A. Bozek, Jolanta Brodzicka, T. Tsuboyama, T. Lesiak, T. Sumiyoshi, D. Mohapatra, N. Parslow, H. Palka, L. E. Piilonen, K. Sumisawa, I. Bedny, J. Li, T. Schietinger, S. Y. Suzuki, R. Kulasiri, Jung-Hyun Kim, M. Danilov, V.N. Zhilich, C. C. Kuo, W. A. Mitaroff, R. Chistov, S. Uehara, Young-Il Choi, S. Ogawa, N. Katayama, T. Uglov, S. Bahinipati, H. Miyake, M. Starič, D. Liventsev, H. Nakazawa, G. Gokhroo, H. J. Kim, I. Bizjak, G. S. Varner, W. S. Hou, Long Zhang, R. Itoh, S. Fratina, R. Mizuk, K. Senyo, T. Kawasaki, S. Stanič, T. Matsumoto, M. Dash, A. Chuvikov, A. Matyja, A. Somov, L. S. Peak, Y. Iwasaki, Y. J. Kwon, O. Schneider, Y. Yamashita, T. Nagamine, C. H. Wang, H. Shibuya, M. Watanabe, S. Uno, Gobinda Majumder, S. U. Kataoka, T. Tsukamoto, Byung Gu Cheon, Noriaki K. Sato, U. Bitenc, J. H. Kang, H. Kawai, A. Garmash, J. Dalseno, Yasushi Nagasaka, A. Ishikawa, S. E. Lee, T. Nozaki, F. Takasaki, C. W. Park, P. Križan, C. C. Wang, M. Akatsu, S. M. Kim, H. Miyata, Y. Hoshi, J. Schümann, and K. Hayasaka
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, KEKB, Pion, Pair production, Meson, Hadron, Elementary particle, Atomic physics, Quarkonium, Boson
Abstract: We have measured π + π − and K + K − production in two-photon collisions using 87.7 fb −1 of data collected with the Belle detector at the asymmetric energy e + e − collider KEKB. The cross sections are measured to high precision in the two-photon center-of-mass energy ( W ) range between 2.4 GeV W 4.1 GeV and angular region | cos θ ∗ | 0.6 . The cross section ratio σ ( γ γ → K + K − ) / σ ( γ γ → π + π − ) is measured to be 0.89 ± 0.04 ( stat. ) ± 0.15 ( syst. ) in the range of 3.0 GeV W 4.1 GeV , where the ratio is energy-independent. We observe a sin −4 θ ∗ behavior of the cross section in the same W range. Production of χ c 0 and χ c 2 mesons is observed in both γ γ → π + π − and γ γ → K + K − modes.
Published: 2005

18. Search for τ→eγ decay at Belle

Author: S. U. Kataoka, G. Gokhroo, Noriaki K. Sato, U. Bitenc, H. J. Kim, M. Iwasaki, T. Aushev, Heyoung Yang, T. Hokuue, S. Blyth, S. Ogawa, J. Haba, C. C. Wang, B. Shwartz, V.N. Zhilich, H. R. Khan, D. Epifanov, Osamu Tajima, A. Matyja, Y. Yamashita, S. Uno, A. Bondar, A. Ishikawa, Jolanta Brodzicka, Y. Choi, K. Inami, M. C. Chang, Y. Iwasaki, O. Nitoh, G. Leder, Y. J. Kwon, H. Miyata, W. A. Mitaroff, A. Chuvikov, S. L. Olsen, K. Sumisawa, W. S. Hou, S. E. Lee, F. Takasaki, C. W. Park, S. Y. Suzuki, T. Nagamine, M. H. Tanaka, Y. Hoshi, Y. Sakai, V.A. Sidorov, O. Schneider, A.S. Kuzmin, E. Nakano, N. Tamura, S. Fratina, Long Zhang, Hiroyuki Sagawa, T. Tsukamoto, Kazuo Abe, Young-Il Choi, Y. Asano, K. Miyabayashi, Hiroaki Aihara, J. Schümann, K. Hayasaka, Masashi Hazumi, S. Okuno, F. Mandl, K. Senyo, H. Kawai, Rainer Stamen, A. Imoto, M. Dash, T. Matsumoto, A. M. Bakich, D. Žontar, A. Yamaguchi, T. Kawasaki, S. Stanič, P. Krokovny, T. Uglov, Z. Natkaniec, T. Ohshima, N. Soni, S. W. Lin, Byung Gu Cheon, Yasushi Nagasaka, Y. Teramoto, T. Okabe, H. Shibuya, M. Watanabe, I. Bedny, J. Li, W. Ostrowicz, J. H. Kang, N.I. Root, I. Bizjak, A. Garmash, G. S. Varner, W. T. Chen, J. Dalseno, A. Somov, H. Hayashii, P. Chang, Jung-Hyun Kim, M. Starič, J. S. Kang, N. Gabyshev, You-Jin Yuan, S. M. Kim, M. Yamauchi, Yuji Enari, H. Kichimi, S. Eidelman, T. Tsuboyama, C. H. Wang, T. Lesiak, S. R. Hou, X. C. Tian, M. Nakao, S. H. Lee, M. Bračko, R. Pestotnik, A. Chen, Zhenyu Zhang, T. E. Browder, Timothy Gershon, C. C. Kuo, L. Hinz, S. Nishida, Seong Keun Kim, H. Palka, L. E. Piilonen, T. Schietinger, P. Pakhlov, A. Bozek, R. Chistov, T. Sumiyoshi, N. Parslow, S. Villa, S. Uehara, N. Katayama, S. Bahinipati, H. Miyake, and Toru Iijima
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Decays of taus, Taus, Lepton number, law.invention, Nuclear physics, KEKB, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider
Abstract: We have searched for the lepton-flavor-violating decay τ → e γ using a data sample of 86.7 fb−1 collected with the Belle detector at the KEKB asymmetric e + e − collider. No evidence for a signal is obtained, and we set an upper limit for the branching fraction B ( τ → e γ ) 3.9 × 10 −7 at the 90% C.L.
Published: 2005

19. Observation of B+→K+ηγ

Author: O. Nitoh, Kazuo Abe, T. Hara, G. Leder, Hiroaki Aihara, Y. Asano, P. Kapusta, S. Okuno, F. Mandl, A. Ishikawa, Takuya Higuchi, Rainer Stamen, Jie Zhang, M. H. Tanaka, S. E. Lee, Y. Choi, A. Somov, Y. Teramoto, S. R. Hou, F. Takasaki, C. W. Park, Hiroyuki Sagawa, M. E. Sevior, P. Križan, Timothy Gershon, R. Mizuk, W. Ostrowicz, R. Pestotnik, T. Okabe, E. Nakano, M. Dash, A. Chuvikov, S. Uno, M. Starič, B. Golob, M. Yamauchi, H. Miyata, Y. Hoshi, K. Inami, Zhenyu Zhang, Y. Sakai, W. S. Hou, J. Schümann, K. Hayasaka, T. Kawasaki, H. Park, Yuji Enari, H. Kichimi, S. Stanič, S. K. Choi, A. Drutskoy, D. Zürcher, Long Zhang, A. Bozek, T. Tsuboyama, V. M. Aulchenko, S. M. Kim, T. Lesiak, L. Y. Dong, S. Suzuki, M. Iwasaki, T. E. Browder, M. Danilov, C. C. Kuo, J. Ying, L. Hinz, S. Nishida, W. T. Chen, X. C. Tian, J. Haba, A. Bondar, S. Korpar, M. Nakao, Jolanta Brodzicka, Takehiko Mori, Y. Chao, Y. Ban, D. Liventsev, M. Z. Wang, P. Krokovny, I. Bizjak, C. H. Wang, J. S. Lange, G. S. Varner, H. Nakazawa, D. Epifanov, G. Gokhroo, A. Imoto, A. M. Bakich, R. Itoh, F. Fang, K. S. Park, Z. Natkaniec, T. Ohshima, P. Schonmeier, S. L. Olsen, H. Hayashii, Tapas Sarangi, C. C. Wang, A. J. Schwartz, H. J. Kim, C. C. Zhang, Kevin Varvell, H. Shibuya, M. Watanabe, V. Eiges, N. Gabyshev, Y. Yamashita, M. Akatsu, A. Chen, T. Nagamine, H. Palka, L. E. Piilonen, A. Matyja, T. Schietinger, I. Bedny, J. Li, J. S. Kang, M. Bračko, H. Ozaki, S. H. Lee, A. Yamaguchi, S. Banerjee, Y. Yusa, S. Eidelman, Jasvinder A. Singh, S. W. Lin, S. Fratina, H. Kawai, Yasushi Nagasaka, R. Chistov, T. Matsumoto, S. Blyth, Y. Ushiroda, T. Sumiyoshi, N. Parslow, V.N. Zhilich, W. A. Mitaroff, J. MacNaughton, Young-Il Choi, K. Miyabayashi, T. Aushev, S. Ogawa, N. Tamura, J. Dragic, D. Žontar, Masashi Hazumi, T. Uglov, Gobinda Majumder, T. Tsukamoto, Heyoung Yang, Byung Gu Cheon, S. Cole, T. Hokuue, H. Miyake, S. U. Kataoka, Y. J. Kwon, O. Schneider, J. H. Kang, A. Garmash, G. R. Moloney, J. Dalseno, Patrick Koppenburg, Toru Iijima, L. S. Peak, Noriaki K. Sato, K. F. Chen, U. Bitenc, S. Uehara, N. Katayama, S. Bahinipati, Rolf Seuster, D. Mohapatra, K. Sumisawa, S. Y. Suzuki, and Osamu Tajima
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, KEKB, Branching fraction, Electron–positron annihilation, Radiative B decay, Radiative transfer, Resonance, Storage ring
Abstract: We report measurements of radiative B decays with K η γ final states, using a data sample of 253 fb −1 recorded at the ϒ ( 4 S ) resonance with the Belle detector at the KEKB e + e − storage ring. We observe B + → K + η γ for the first time with a branching fraction of ( 8.4 ± 1.5 (stat) −0.9 +1.2 (syst) ) × 10 −6 for M K η 2.4 GeV / c 2 , and find evidence of B 0 → K 0 η γ . We also search for B → K 3 ∗ ( 1780 ) γ .
Published: 2005

20. Search for neutrinoless decays τ→3ℓ

Author: Y. Yusa, T. Nagamine, A. Yamaguchi, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A.M. Bakich, E. Banas, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T.E. Browder, M.-C. Chang, B.G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, M. Danilov, L.Y. Dong, S. Eidelman, V. Eiges, Y. Enari, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, J.H. Kang, J.S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H.O. Kim, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, S.H. Lee, T. Lesiak, J. Li, S.-W. Lin, J. MacNaughton, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, H. Miyata, D. Mohapatra, G.R. Moloney, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S.L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, K.S. Park, N. Parslow, J.-P. Perroud, L.E. Piilonen, A. Poluektov, N. Root, H. Sagawa, S. Saitoh, Y. Sakai, T.R. Sarangi, O. Schneider, A.J. Schwartz, S. Semenov, K. Senyo, M.E. Sevior, H. Shibuya, B. Shwartz, J.B. Singh, N. Soni, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, C.C. Wang, C.H. Wang, Y. Yamada, Y. Yamashita, M. Yamauchi, H. Yanai, J. Zhang, Z.P. Zhang, V. Zhilich, T. Ziegler, and D. Žontar
Subjects: Nuclear physics, Physics, Particle physics, Nuclear and High Energy Physics, KEKB, Electron–positron annihilation, TAU lepton flavor violation, Lepton
Abstract: We have searched for neutrinoless τ lepton decays into three charged leptons using an 87.1fb-1 data sample collected with the Belle detector at the KEKB e+e- collider. Since the number of signal candidate events is compatible with that expected from the background, we set 90% confidence level upper limits on the branching fractions in the range (1.9-3.5)×10-7 for various decay modes τ -→l-l+l- where l represents e or μ. © 2004 Published by Elsevier B.V.
Published: 2004
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21. New results from Belle

Author: M. Yamauchi
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Recoil, KEKB, Branching fraction, Electroweak interaction, Mass spectrum, CP violation, B meson, Atomic and Molecular Physics, and Optics, Standard Model
Abstract: We have measured the CP violation parameters in B° decays to the following CP eigenstates: (c c )K s , J/ψK L , J/ψK −0 , π + π − , θK s , η/K s and K + K − K s , using data collected with the Belle detector at the KEKB asymmetric-energy e+e− collider. One of the angles of the CKM unitality triangle, θ1, has been determined using 78 fb−1 as sin 2θ1 = 0.719 ± 0.074 ± 0.035. The large Aππ is an indication of direct CP violation in B meson decay. The SθK, Sη′K are SKKK are all consistent with sin 2θ1 within 3σ. We also present the first measurement o the inclusive branching fraction for the electroweak penguin decay B → Xsl+l−. The results on the branching fraction, dilepton and recoil mass spectra are in agreement with the Standard Model expectations.
Published: 2003

22. 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

23. 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

24. 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

25. Measurement ofBd0−B¯d0Mixing Rate from the Time Evolution of Dilepton Events at theϒ(4S)

Author: K. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, G. Alimonti, K. Aoki, 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, B. G. Cheon, S.-K. Choi, Y. Choi, Y. Doi, J. Dragic, S. Eidelman, Y. Enari, R. Enomoto, C. W. Everton, F. Fang, H. Fujii, Y. Fujita, C. Fukunaga, M. Fukushima, A. Garmash, A. Gordon, K. Gotow, H. Guler, R. Guo, J. Haba, T. Haji, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, K. Hayashi, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hirai, H. Hirano, T. Hojo, Y. Hoshi, W.-S. Hou, S.-C. Hsu, H.-C. Huang, Y.-C. Huang, S. Ichizawa, Y. Igarashi, T. Iijima, H. Ikeda, K. Ikeda, K. Inami, Y. Inoue, 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, K. Kasami, N. Katayama, H. Kawai, M. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, Hyunwoo Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Koike, S. Koishi, H. Konishi, K. Korotushenko, P. Krokovny, R. Kulasiri, S. Kumar, T. Kuniya, E. Kurihara, A. Kuzmin, Y.-J. Kwon, M. H. Lee, S. H. Lee, C. Leonidopoulos, H.-B. Li, R.-S. Lu, Y. Makida, A. Manabe, D. Marlow, T. Matsubara, T. Matsuda, S. Matsui, S. Matsumoto, T. Matsumoto, K. Miyabayashi, H. Miyake, H. Miyata, L. C. Moffitt, A. Mohapatra, G. R. Moloney, G. F. Moorhead, S. Mori, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, 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, 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. Raaf, J. L. Rodriguez, N. Root, M. Rozanska, K. Rybicki, J. Ryuko, H. Sagawa, Y. Sakai, H. Sakamoto, H. Sakaue, M. Satapathy, N. Sato, A. Satpathy, S. Schrenk, S. Semenov, M. E. Sevior, H. Shibuya, B. Shwartz, A. Sidorov, V. Sidorov, S. Stanic̆, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, J. 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, 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. Yamaguchi, H. Yamaoka, Y. Yamaoka, Y. Yamashita, M. Yamauchi, S. Yanaka, M. Yokoyama, K. Yoshida, Y. Yusa, H. Yuta, C. C. Zhang, H. W. Zhao, Y. Zheng, V. Zhilich, and D. Z̆ontar
Subjects: Physics, Nuclear physics, Particle physics, KEKB, Muon, Mixing (mathematics), Time evolution, General Physics and Astronomy
Abstract: We report a determination of the ${B}_{d}^{0}\ensuremath{-}{\overline{B}}_{d}^{0}$ mixing parameter $\ensuremath{\Delta}{m}_{d}$ based on the time evolution of dilepton yields in $\ensuremath{\Upsilon}(4S)$ decays. The measurement is based on a $5.9{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected by the Belle detector at KEKB. The proper-time difference distributions for same-sign and opposite-sign dilepton events are simultaneously fitted to an expression containing $\ensuremath{\Delta}{m}_{d}$ as a free parameter. Using both muons and electrons, we obtain $\ensuremath{\Delta}{m}_{d}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.463\ifmmode\pm\else\textpm\fi{}0.008(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.016(\mathrm{syst}){\mathrm{ps}}^{\ensuremath{-}1}$. This is the first determination of $\ensuremath{\Delta}{m}_{d}$ from time evolution measurements at the $\ensuremath{\Upsilon}(4S)$. We also place limits on possible $\mathrm{CPT}$ violations.
Published: 2001

26. Study of baryon production mechanism in e+e− annihilation into hadrons

Author: M. Aoki, R. Itoh, Y. Watanabe, K. Kaneyuki, Y. Ohshima, A. Ochi, T. Tanimori, K. Abe, T. Abe, I. Adachi, K. Adachi, K. Emi, R. Enomoto, H. Fujii, T. Fujii, K. Fujii, J. Fujimoto, N. Fujiwara, H. Hayashii, H. Hirano, B. Howell, H. Ikeda, Y. Inoue, S. Itami, H. Iwasaki, M. Iwasaki, R. Kajikawa, S. Kato, S. Kawabata, H. Kichimi, M. Kobayashi, D. Koltick, I. Levine, H. Mamada, K. Miyabayashi, A. Miyamoto, K. Nagai, K. Nakabayashi, M. Nakamura, E. Nakano, O. Nitoh, S. Noguchi, F. Ochiai, N. Ohishi, Y. Ohnishi, H. Okuno, T. Okusawa, E. Shibata, A. Sugiyama, S. Suzuki, K. Takahashi, T. Takahashi, Y. Teramoto, T. Tauchi, M. Tomoto, T. Tsukamoto, T. Tsumura, S. Uno, A. Yamamoto, and M. Yamauchi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Nuclear Theory, High Energy Physics::Phenomenology, Hadron, Context (language use), engineering.material, law.invention, Nuclear physics, Diquark, Topaz, Baryon, Pair production, law, engineering, High Energy Physics::Experiment, Nuclear Experiment, Collider
Abstract: The mechanism of baryon-anti-baryon pair production in e + e − annihilation into hadrons has been studied using the TOPAZ detector at the TRISTAN e + e − collider at an average center-of-mass energy of 58 GeV. The distributions of various p p correlations were compared with two prominent models: the cluster-fragmentation model and the string-fragmentation model. We rejected the cluster-fragmentation model at the 90% C.L. Furthermore, in the context of the string-fragmentation model, we favor the “popcorn” model, rejecting the “diquark” model, where a diquark is considered to be a fundamental entity, at the 95% C.L.
Published: 1998

27. Charged-particle multiplicities of quark and gluon jets in e+ e− annihilation at TRISTAN

Author: K. Nakabayashi, M. Yamauchi, K. Abe, T. Abe, I. Adachi, K. Adachi, M. Aoki, K. Emi, R. Enomoto, H. Fujii, K. Fujii, T. Fujii, J. Fujimoto, N. Fujiwara, H. Hayashii, B. Howell, H. Ikeda, Y. Inoue, R. Itoh, S. Itami, H. Iwasaki, M. Iwasaki, K. Kaneyuki, R. Kajikawa, S. Kato, S. Kawabata, H. Kichimi, M. Kobayashi, D. Koltick, I. Levine, K. Miyabayashi, A. Miyamoto, K. Nagai, E. Nakano, O. Nitoh, S. Noguchi, A. Ochi, F. Ochiai, N. Ohishi, Y. Ohnishi, Y. Ohshima, H. Okuno, T. Okusawa, A. Sugiyama, S. Suzuki, K. Takahashi, T. Takahashi, T. Tanimori, T. Tauchi, Y. Teramoto, M. Tomoto, T. Tsukamoto, S. Uno, Y. Watanabe, and A. Yamamoto
Subjects: Quark, Physics, Topaz, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, engineering, Multiplicity (mathematics), engineering.material, Charged particle, Gluon
Abstract: Charged-particle multiplicity was studied in e+e− annihilation at s = 57.8 GeV using the TOPAZ detector at TRISTAN. The average multiplicity was 〈nch〉 = 17.64± 0.05(stat.) ± 0.41(syst.). It was found that the multiplicity depends on the thrust (T) of an event. From extrapolating this relation to T = 2 3 , the multiplicity for three-fold symmetric events was estimated to be 〈n ch 〉 T = 2 3 = 23.50 −1.45 +1.25 . From this, the multiplicity ratio between gluon- and quark-jet was estimated to be r g q = 1.46 −0.13 +0.09 without any possible bias from jet clustering.
Published: 1997

28. A study of single photon production in e+e− collisions at GeV with the TOPAZ detector at TRISTAN

Author: T. Abe, K. Fujii, A. Sugiyama, J. Fujimoto, T. Tauchi, S. Suzuki, R. Kajikawa, K. Adachi, K. Abe, I. Adachi, M. Aoki, K. Emi, R. Enomoto, H. Fujii, T. Fujii, N. Fujiwara, H. Hayashii, H. Hirano, B. Howell, H. Ikeda, Y. Inoue, R. Itoh, S. Itami, H. Iwasaki, M. Iwasaki, K. Kaneyuki, S. Kato, S. Kawabata, H. Kichimi, M. Kobayashi, D. Koltick, I. Levine, H. Mamada, K. Miyabayashi, A. Miyamoto, K. Nagai, K. Nakabayashi, E. Nakano, M. Nakamura, O. Nitoh, S. Noguchi, A. Ochi, F. Ochiai, N. Ohishi, Y. Ohnishi, Y. Ohshima, H. Okuno, T. Okusawa, E. Shibata, K. Takahashi, T. Takahashi, T. Tanimori, Y. Teramoto, M. Tomoto, T. Tsukamoto, T. Tsumura, S. Uno, K. Watanabe, Y. Watanabe, A. Yamamoto, and M. Yamauchi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, Luminosity (scattering theory), Detector, engineering.material, Massless particle, Nuclear physics, Topaz, Event selection, Selectron tube, engineering, Photino
Abstract: We report a study of single photon production in e+e− collisions at s =58 GeV with the TOPAZ detector at TRISTAN. From data corresponding to an integrated luminosity of 213 pb−1, 5 single photon candidates remained after event selection, which can be compared with the expected 3.1 ν ν γ and 2.8 background events. These results exclude the selectron mass below 47.2 GeV at the 90% confidence level, if e L and e R are mass-degenerate and the photino is massless. When combined with results from other experiments, this limit improves to 75.0 GeV.
Published: 1995

29. Measurement of the total hadronic cross section and determination of γ-Z interference in e+e− annihilation

Author: K. Miyabayashi, I. Adachi, K. Fujii, J. Fujimoto, A. Miyamoto, A. Sugiyama, S. Suzuki, T. Tauchi, K. Abe, T. Abe, K. Adachi, M. Aoki, S. Awa, K. Emi, R. Enomoto, H. Fujii, T. Fujii, K. Fujita, N. Fujiwara, H. Hayashii, B. Howell, N. Iida, H. Ikeda, R. Itoh, Y. Inoue, H. Iwasaki, M. Iwasaki, K. Kaneyuki, R. Kajikawa, S. Kato, S. Kawabata, H. Kichimi, M. Kobayashi, D. Koltick, I. Levine, S. Minami, K. Muramatsu, K. Nagai, K. Nakabayashi, E. Nakano, O. Nitoh, S. Noguchi, A. Ochi, F. Ochiai, N. Ohishi, Y. Ohnishi, Y. Ohshima, H. Okuno, T. Okusawa, T. Shinohara, K. Takahashi, T. Takahashi, T. Tanimori, Y. Teramoto, N. Toomi, T. Tsukamoto, O. Tsumura, S. Uno, T. Watanabe, Y. Watanabe, A. Yamaguchi, A. Yamamoto, and M. Yamauchi
Subjects: Physics, Topaz, Nuclear physics, Nuclear and High Energy Physics, Cross section (physics), Particle physics, Annihilation, Luminosity (scattering theory), Hadron, engineering, engineering.material, Interference (wave propagation)
Abstract: The total hadronic cross section in e + e − annihilation was measured at s =5.77 GeV to be σ h = 143.6 ± 1.5 (stat) ± 3.5 (sys) pb with only the QED corrections. The measurement was based on data corresponding to an integrated luminosity of 90.8 pb −1 accumulated by the TOPAZ detector at TRISTAN. Our data point put stringent constraints on the size of the γ - Z 0 interference and the Z 0 mass. Combining our data with the OPAL data at LEP, we obtained the coefficient of the interference and the Z 0 mass to be J had = 0.10 ± 0.26 and M z = 91.151 ± 0.008 GeV, respectively, in a model-independent analysis.
Published: 1995

30. Precise Measurement of theCPViolation Parametersin 2ϕ1inB0→(cc¯)K0Decays

Author: R. Mizuk, H. K. Park, Z. Q. Liu, Y. Yamashita, E. Nakano, Yukinori Sato, C. Liu, J. G. Shiu, K. Sumisawa, P. Kapusta, S. Okuno, J. Dalseno, Frank Simon, V. Gaur, M. Nakao, Y. Teramoto, M. Yamauchi, S. McOnie, A. Vinokurova, P. Krokovny, D. Epifanov, Bruce Yabsley, K. Cho, B. R. Ko, O. Nitoh, Norihito Muramatsu, H. J. Kim, M. Rozanska, L. E. Piilonen, K. S. Park, T. K. Pedlar, G. Tatishvili, H. Nakazawa, B. Golob, Y. F. Liu, G. Pakhlova, Satoshi Tanaka, T. Iijima, P. Krian, A.E. Bondar, A. J. Schwartz, P. Pakhlov, M. Starič, T. Kumita, J. S. Lange, V. Bhardwaj, Z. Doleal, B. G. Cheon, Z. P. Zhang, I. Tikhomirov, K. M. Williams, Y. Unno, S. L. Olsen, C. H. Wang, H. O. Kim, T. Julius, S. E. Vahsen, T. Kuhr, A. Kuzmin, G. B. Mohanty, T. Iwashita, Po-Hsun Chen, Y. Sakai, R. Chistov, V.N. Zhilich, A. Bozek, Y. Iwasaki, W. S. Hou, J. Haba, S. Koblitz, M. Röhrken, K. Chilikin, Y. Yusa, H. Ozaki, S. Ogawa, Y. J. Kwon, S. Korpar, Anze Zupanc, S. Neubauer, K. T. Kim, S. Uehara, K. Miyabayashi, O. Schneider, K. Senyo, B. Bhuyan, M. Watanabe, J. B. Singh, N. Katayama, S. K. Choi, Kevin Varvell, V. Vorobyev, Marko Petrič, T. E. Browder, H. J. Hyun, P. Smerkol, T. Sumiyoshi, Y. B. Hsiung, Tariq Aziz, Yang Li, T. Kawasaki, E. Solovieva, Jung-Hyun Kim, Yongsun Kim, Sang Hoon Lee, A. Garmash, S. Uno, Y. Choi, I. Adachi, A. Ishikawa, A. Bay, T. Hara, R. Pestotnik, T. Mori, H. Aihara, B.A. Shwartz, M. Danilov, T. Higuchi, Z. Drásal, C. Schwanda, D. Matvienko, Y. Miyazaki, J. B. Kim, T. Sanuki, M. Uchida, Y. M. Goh, K. Hara, D. M. Asner, Y. S. Sohn, E. Won, K. Trabelsi, C. P. Shen, S. Nishida, D. Liventsev, Andrey Sokolov, A.L. Sibidanov, H. Sahoo, T. Uglov, G. S. Varner, Hitoshi Yamamoto, K. Nishimura, T. Aushev, T. A. Shibata, H. Miyata, Rakesh Kumar, M. Bischofberger, Y. Hoshi, S.I. Eidelman, R. Itoh, James E. Fast, M. Iwabuchi, P. Wang, K. Hayasaka, J. Li, Yasuyuki Horii, R. Louvot, K. Sakai, V.E. Shebalin, H. Kichimi, T. Tsuboyama, Anton Poluektov, H. Hayashii, M. Z. Wang, K. Kinoshita, Y. Watanabe, Y. Onuki, V.M. Aulchenko, O. Zyukova, M. Sumihama, P. Kody, Y. Ushiroda, C. Kiesling, M. Bračko, Samo Stanič, A. M. Bakich, T. Ohshima, and N. Gabyshev
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, Resonance, 01 natural sciences, law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, CP violation, High Energy Physics::Experiment, B meson, 010306 general physics, Collider
Abstract: We present a precise measurement of the CP violation parameter sin2 phi(1) and the direct CP violation parameter A(f) using the final data sample of 772 x 10(6) B (B) over bar pairs collected at the gamma(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(0), psi(2S)K-S(0), chi K-c1(S)0, or J/psi K-L(0) CP eigenstate an(its flavor is identified from the decay products of the accompanying B meson. From the distribution of proper-time intervals between the two B decays, we obtain the following CP violation parameters: sin2 phi(1) 0.667 +/- 0.023(stat) +/- 0.012(syst) and A(f) = 0.006 +/- 0.016(stat) +/- 0.012(syst).
Published: 2012

31. Observation of Two Charged Bottomoniumlike Resonances inΥ(5S)Decays

Author: R. Louvot, V.E. Shebalin, Yongsun Kim, C. Schwanda, I. Adachi, A. Garmash, J. B. Kim, O. Nitoh, G. Tatishvili, Z. Doleal, B.A. Shwartz, Norihito Muramatsu, K. T. Kim, B. G. Cheon, K. Arinstein, R. Mizuk, Vladimir Zhulanov, M. E. Sevior, M. Niiyama, A. Vinokurova, S. E. Vahsen, S. K. Choi, C. Z. Yuan, J. Haba, T. Iwashita, C. Liu, T. Nozaki, Anze Zupanc, S. L. Olsen, T. Iijima, K. Belous, S. Korpar, Sunmin Ryu, Y. Iwasaki, H. Kichimi, Marko Petrič, H. J. Hyun, P. Smerkol, E. Won, Y. Onuki, V. Gaur, S. Uehara, O. Schneider, Frank Simon, T. Kuhr, J. Libby, Z. Q. Liu, K. Cho, D. Matvienko, Y. Miyazaki, Nagao Kobayashi, M. Nakao, S. McOnie, J. G. Shiu, K. Senyo, E. L. Barberio, J. Dalseno, T. Kawasaki, O. Zyukova, M. Yamauchi, D. M. Asner, H. Sahoo, M. C. Chang, A. M. Bakich, Z. Natkaniec, D. Epifanov, M. Uchida, B. R. Ko, Rakesh Kumar, M. Ritter, T. Uglov, D. Santel, M. T. Prim, M. Iwabuchi, N. Gabyshev, M. Sumihama, M. Z. Wang, K. Kinoshita, P. Kody, D. Liventsev, T. A. Shibata, H. Miyata, M. J. Kim, M. Bischofberger, Y. Ushiroda, V. Bhardwaj, T. K. Pedlar, Y. Hoshi, A. Moll, S.I. Eidelman, Satoshi Tanaka, G. S. Varner, M. Starič, T. Kumita, Y. Sakai, K. Hayasaka, C. Kiesling, P. Chang, A.E. Bondar, T. Sumiyoshi, A. Kuzmin, H. Aihara, Y. Watanabe, P. Wang, I. S. Cho, Sang Hoon Lee, Jung-Hyun Kim, M. Bračko, B. Golob, Z. P. Zhang, T. Sanuki, L. E. Piilonen, E. Solovieva, G. Pakhlova, P. Krian, C. H. Wang, T. Aushev, M. Shapkin, J. S. Lange, M. Röhrken, K. Chilikin, K. Inami, J. Li, Y. Teramoto, Bruce Yabsley, Anton Poluektov, H. K. Park, Y. Yamashita, T. Julius, R. Chistov, I. Tikhomirov, K. M. Williams, A. Chen, Andrey Sokolov, J. H. Kang, K. Nishimura, James E. Fast, R. Mussa, A. Ishikawa, V.N. Zhilich, S. Neubauer, Y. S. Sohn, T. E. Browder, M. Danilov, P. Pakhlov, H. Park, A. Bozek, S. Koblitz, A. Drutskoy, S. Nishida, X. L. Wang, Tariq Aziz, Yang Li, Y. Choi, T. Hara, Y. M. Goh, G. B. Mohanty, and Y. Yusa
Subjects: Physics, 010308 nuclear & particles physics, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy, Resonance, Dalitz plot, Elementary particle, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, KEKB, Pion, law, 0103 physical sciences, Mass spectrum, 010306 general physics, Collider
Abstract: We report the observation of two narrow structures in the mass spectra of the pi(+/-) Y(nS) (n = 1, 2, 3) and pi(+/-) h(b)(mP) (m = 1, 2) pairs that are produced in association with a single charged pion in Y(5S) decays. The measured masses and widths of the two structures averaged over the five final states are M-1 = (10 607.2 +/- 2.0) MeV/c(2), Gamma(1) =(18.4 +/- 2.4) MeV, and M-2 = (10 652.2 +/- 1.5) MeV/c(2), Gamma(2) = (11.5 +/- 2.2) MeV. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector in the vicinity of the Y(5S) resonance at the KEKB asymmetric-energy e(+)e(-) collider.
Published: 2012

32. k0 (K̄0) production in two-photon processes at TRISTAN

Author: R. Enomoto, K. Abe, T. Abe, I. Adachi, K. Adachi, M. Aoki, S. Awa, K. Emi, H. Fujii, K. Fujii, T. Fujii, J. Fujimoto, K. Fujita, N. Fujiwara, H. Hayashii, B. Howell, N. Iida, R. Itoh, Y. Inoue, H. Iwasaki, M. Iwasaki, K. Kaneyuki, R. Kajikawa, S. Kato, S. Kawabata, H. Kichimi, M. Kobayashi, D. Koltick, I. Levine, S. Minami, K. Miyabayashi, A. Miyamoto, K. Muramatsu, K. Nagai, K. Nakabayashi, E. Nakano, O. Nitoh, S. Noguchi, A. Ochi, F. Ochiai, N. Ohishi, Y. Ohnishi, Y. Ohshima, H. Okuno, T. Okusawa, T. Shinohara, A. Sugiyama, S. Suzuki, K. Takahashi, T. Takahashi, T. Tanimori, T. Tauchi, Y. Teramoto, N. Toomi, T. Tsukamoto, O. Tsumura, S. Uno, T. Watanabe, Y. Watanabe, A. Yamaguchi, A. Yamamoto, and M. Yamauchi
Subjects: Physics, Nuclear physics, High Energy Physics - Experiment (hep-ex), Nuclear and High Energy Physics, Luminosity (scattering theory), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, High Energy Physics::Experiment, Production (computer science), Measure (mathematics), High Energy Physics - Experiment
Abstract: We have carried out an inclusive measurement of $K^0(\bar{K^0})$ production in two-photon processes at TRISTAN. The mean $\sqrt{s}$ was 58 GeV and the integrated luminosity was 199 pb$^{-1}$. High-statistics $K_s$ samples were obtained under such conditions as no-, anti-electron, and remnant-jet tags. The remnant-jet tag, in particular, allowed us, for the first time, to measure the cross sections separately for the resolved-photon and direct processes., Comment: 20 pages, Latex format, 4 figures and KEK-mark included. Table 1 revised. To be published in Phys. Lett. B
Published: 1994

33. Measurement of the photon structure function F2γ and jet production at TRISTAN

Author: K. Muramatsu, H. Hayashii, S. Noguchi, N. Fujiwara, K. Abe, T. Abe, I. Adachi, M. Aoki, S. Awa, R. Belusevic, K. Emi, R. Enomoto, H. Fujii, K. Fujii, T. Fujii, J. Fujimoto, K. Fujita, B. Howell, N. Iida, H. Ikeda, R. Itoh, H. Iwasaki, M. Iwasaki, R. Kajikawa, K. Kaneyuki, S. Kato, S. Kawabata, H. Kichimi, M. Kobayashi, D. Koltick, I. Levine, S. Minami, K. Miyabayashi, A. Miyamoto, K. Nagai, T. Nagira, E. Nakano, K. Nakabayashi, O. Nitoh, F. Ochiai, Y. Ohnishi, H. Okuno, T. Okusawa, K. Shimozawa, T. Shinohara, A. Sugiyama, N. Sugiyama, S. Suzuki, K. Takahashi, T. Takahashi, M. Takemoto, T. Tanimori, T. Tauchi, F. Teramae, Y. Teramoto, N. Toomi, T. Toyama, T. Tsukamoto, S. Uno, T. Watanabe, Y. Watanabe, A. Yamaguchi, A. Yamamoto, and M. Yamauchi
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Photon, Hadron, Detector, Jet (particle physics), engineering.material, Deep inelastic scattering, Photon structure function, Nuclear physics, Topaz, engineering, High Energy Physics::Experiment
Abstract: We have measured the photon structure function F2γ in the reaction e+e− → e+e− hadrons for average Q2 values from 5.1 to 338 GeV2 by using data collected by the TOPAZ detector at TRISTAN. The data have been corrected for detector effects and are compared with theoretical expectations based on QCD. The structure function F2γ increases as ln Q2, as expected. A sample of events with one or two distinct jets has been identified in the final state. Although two-jet events can be explained solely by the point-like perturbative part, one-jet events require a significant hadron-like part in addition.
Published: 1994

34. Search for charmonium and charmoniumlike states inΥ(2S)radiative decays

Author: I. S. Cho, S. Okuno, M. Z. Wang, K. Kinoshita, H. Sahoo, M. Shapkin, M. Yamauchi, Y. Iwasaki, T. Aushev, R. Louvot, C. H. Wang, Zhenyu Zhang, K. T. Kim, K. Chilikin, G. B. Mohanty, Y. J. Kwon, T. Iwashita, Y. Teramoto, Y. Watanabe, O. Schneider, Bruce Yabsley, P. Pakhlov, Marko Petrič, A.S. Kuzmin, T. Iijima, V.N. Zhilich, H. J. Hyun, R. Pestotnik, P. Smerkol, H. Park, O. Nitoh, J. Haba, K. Belous, A. Bozek, S. Koblitz, Sang Hoon Lee, S.I. Eidelman, H. K. Park, O. Seon, Frank Simon, H. Hayashii, Y. Yamashita, Yasushi Nagasaka, Jung-Hyun Kim, Y. Onuki, M. J. Kim, B. Bhuyan, T. E. Browder, B. G. Cheon, Y. Sakai, M. Starič, Yang Li, S. Ogawa, J. Libby, T. Sanuki, K. Miyabayashi, S. Neubauer, K. Cho, A. Chen, J. H. Kang, K. Nishimura, M. Sumihama, Y. Choi, Hiroaki Aihara, J. S. Lange, D. Matvienko, M. Danilov, Y. M. Goh, Y. Miyazaki, E. Solovieva, H. Kichimi, E. L. Barberio, J. G. Shiu, Sunmin Ryu, J. Dalseno, B. R. Ko, K. Trabelsi, E. Won, R. Mussa, S. Nishida, J. Li, C. Z. Yuan, C. P. Shen, A. Ishikawa, J.E. Fast, T. K. Pedlar, D. M. Asner, X. L. Wang, B.A. Shwartz, P. Križan, M. Ritter, M. C. Chang, Z. Doležal, V. Gaur, Y. S. Sohn, M. E. Sevior, G. Tatishvili, H. Nakazawa, M. Iwabuchi, L. E. Piilonen, M. Nakao, G. Pakhlova, M. Uchida, H. J. Kim, S. McOnie, Chang Liu, T. Julius, D. Liventsev, H. O. Kim, Yoshinobu Unno, G. S. Varner, M. Feindt, S. L. Olsen, Y. Usov, R. Itoh, Y. B. Hsiung, P. Wang, Yongsun Kim, S. Uno, C. Schwanda, N. Kobayashi, T. A. Shibata, H. Miyata, Y. Hoshi, K. Hayasaka, K. Senyo, C. L. Lim, T. Kawasaki, Samo Stanič, M. Bračko, A. M. Bakich, Z. Natkaniec, T. Ohshima, X. R. Li, S. Uehara, N. Katayama, I. Adachi, and J. B. Kim
Subjects: Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Analytical chemistry, Omega baryon, Quarkonium, 01 natural sciences, Omega, Nuclear physics, Charmed baryons, 0103 physical sciences, B meson, 010306 general physics, X(3872)
Abstract: Using a sample of 158 x 10(6) gamma (2S) events collected with the Belle detector, charmonium and charmoniumlike states with even charge parity are searched for in gamma (2S) radiative decays. No significant chi(cJ) or eta(c) signal is observed, and the following upper limits at 90% confidence level (C. L.) are obtained: B(gamma(2S)-> gamma chi(c0)) gamma chi(c1)) gamma chi(c2)) gamma eta(c)) gamma X(3872)) x B(X(3872) -> pi(+)pi(-) J/psi) gamma X(3872)) x B(X(3872) -> pi(+)pi(-)pi(0) J/psi) gamma X(3915)) x B(X(3915) -> omega J/psi) gamma Y(4140)) x B(Y(4140) -> phi J/psi) gamma X(4350) x B(X(4350) -> phi J/psi)) < 1.3 x 10(-6) at 90% C. L.
Published: 2011

35. Bounds on the width, mass difference and other properties ofX(3872)→π+π−J/ψdecays

Author: S. Eidelman, T. Aushev, P. Pakhlov, V.N. Zhilich, S. Uehara, Byeong Rok Ko, L. E. Piilonen, A. Kuzmin, N. Katayama, Marko Petrič, J. Libby, S. Neubauer, K. Miyabayashi, S. Okuno, G. Pakhlova, H. J. Hyun, P. Smerkol, Y. Teramoto, Y. Choi, Bruce Yabsley, A. Garmash, H. Park, A. Bozek, S. Koblitz, S. Ogawa, D. Matvienko, P. Chang, Y. Miyazaki, I. Adachi, T. Hara, M. Sumihama, Jung-Hyun Kim, D. M. Asner, Xiuwan Li, K. Senyo, C. L. Lim, T. Kawasaki, K. M. Williams, A. Chen, T. Julius, Po-Hsun Chen, Kevin Varvell, K. Kinoshita, J. G. Shiu, Z. Natkaniec, Z. Drásal, A. Drutskoy, T. Iijima, Y. M. Goh, Y. Onuki, Y. Sakai, G. Tatishvili, C. C. Zhang, M. Uchida, Yasushi Nagasaka, O. Zyukova, J. Li, A. Zupanc, K. Trabelsi, A. Vinokurova, Sunmin Ryu, J. B. Kim, E. Nakano, M. Watanabe, Meng Wang, D. Liventsev, R. Mussa, B. Bhuyan, H. Aihara, A.E. Bondar, Anton Poluektov, E. Won, G. S. Varner, Nagao Kobayashi, T. Kuhr, T. E. Browder, S. K. Kim, M. Shapkin, A. Ishikawa, A. Bay, M. Röhrken, K. Chilikin, H. O. Kim, K. Sakai, Y. Watanabe, Z. Doležal, O. Brovchenko, Samo Stanič, H. Kichimi, E. L. Barberio, Y. J. Kim, P. Križan, Y. S. Sohn, T. Sumiyoshi, O. Nitoh, Jeremy Dalseno, C. Liu, K. Cho, V. Gaur, Y. B. Hsiung, R. Itoh, H. Sahoo, P. Wang, H. Hayashii, Hyunyong Kim, K. T. Kim, N. J. Joshi, Y. B. Li, Andrey Sokolov, T. Uglov, T.-A. Shibata, M. Nakao, T. Sanuki, A. M. Bakich, C. Z. Yuan, J. B. Singh, S. K. Choi, E. Solovieva, M. Iwabuchi, A. J. Schwartz, S. H. Lee, H. Miyata, T. Ohshima, T. Iwashita, S. McOnie, J. H. Kang, K. Nishimura, R. Pestotnik, S. Nishida, I. S. Cho, M. Bischofberger, V. V. Zhulanov, Y. Unno, James E. Fast, K. Inami, Y. F. Liu, M. E. Sevior, B. G. Cheon, Y. Hoshi, W. S. Hou, X. L. Wang, K. Arinstein, N. Gabyshev, K. Hayasaka, O. Seon, Frank Simon, K. Belous, S. Korpar, Jolanta Brodzicka, M. Yamauchi, Yasuyuki Horii, J. Haba, C. H. Wang, H. K. Park, Y. Yamashita, M. J. Lee, M. Bračko, B. Golob, J. S. Lange, S. E. Vahsen, Y. Iwasaki, Y. J. Kwon, O. Schneider, M. J. Kim, M. Starič, T. Kumita, R. Louvot, V.E. Shebalin, Peter Kodys, D. Epifanov, K. S. Park, V. Bhardwaj, S. L. Olsen, S. Uno, C. Schwanda, G. B. Mohanty, and R. Mizuk
Subjects: Physics, Nuclear and High Energy Physics, Annihilation, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Analytical chemistry, Resonance, 01 natural sciences, Nuclear physics, KEKB, Isospin, 0103 physical sciences, Pi, 010306 general physics, X(3872)
Abstract: We present results from a study of X(3872) -> pi pi J/psi decays produced via exclusive B -> KX(3872) decays. We determine the mass to be M-X(3872) = (3871.85 +/- 0.27(stat) +/- 0.19(syst)) MeV, a 90% confidence level upper limit on the natural width of Gamma(X(3872)) K+X(3872)) X B(X(3872) -> pi(+)pi(-) J/psi) = (8.63 +/- 0.82(stat) +/- 0.52(syst)) X 10(-6), and a ratio of branching fractions B(B-0 -> (KX)-X-0(3872))/B(B+ -> K+X(3872)) = 0.50 +/- 0.14(stat)) +/- 0.04(syst). The difference in mass between the X(3872) -> pi(+)pi(-) J/psi signals in B+ and B-0 decays is Delta M-X(3872) = (-0.71 +/- 0.96(stat) +/- 0.19(syst)) MeV. A search for a charged partner of the X(3872) in the decays (0) -> K-X+ or B+ -> (KX+)-X-0, X+ -> pi(+)pi(0) J/psi resulted in upper limits on the product branching fractions for these processes that are well below expectations for the case that the X(3872) is the neutral member of an isospin triplet. In addition, we examine possible J(PC) quantum number assignments for the X(3872) based on comparisons of angular correlations between final state particles in X(3872) -> pi(+)pi(-) J/psi decays with simulated data for J(PC) values of 1(++) and 2(-+). We examine the influence of rho-omega interference in the M(pi(+)pi(-)) spectrum. The analysis is based on a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar meson pairs collected at the gamma(4S) resonance in the Belle detector at the KEKB e(+)e(-) collider.
Published: 2011

36. Measurement of the forward-backward asymmetry of

Author: K. Miyabayashi, K. Emi, S. Kawabata, Osamu Nitoh, T. Takahashi, K. Takahashi, K. Abe, I. Adachi, Hirokazu Ikeda, F. Teramae, H. Hayashii, T. Toyama, Koichi Nagai, N. Sugiyama, H. Kichimi, I. Levine, Y. Ohnishi, E. Nakano, R. Itoh, A. Yamaguchi, T. Shinohara, J. Fujimoto, T. Fujii, B. Howell, A. Miyamoto, D.S. Koltick, M. Iwasaki, Tomohiro Abe, Toru Tanimori, N. Toomi, Hiroyuki Iwasaki, Shota Suzuki, F. Ochiai, T. Okusawa, Hideki Okuno, R. Kajikawa, S. Noguchi, K. Muramatsu, T. Tauchi, Masakazu Kobayashi, T. Tsukamoto, K. Shimozawa, S. Uno, R. Belusevic, M. Takemoto, Keisuke Fujii, Y. Teramoto, M. Yamauchi, N. Fujiwara, A. Sugiyama, Ryoji Enomoto, Y. Watanabe, H. Fujii, K. Fujita, N. Iida, T. Nagira, Akira Yamamoto, Masato Aoki, N. Nakabayashi, S. Awa, and S. Kato
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Meson, media_common.quotation_subject, Electron–positron annihilation, Forward backward, Elementary particle, Asymmetry, media_common, Standard Model
Abstract: Measurements of the forward-backward asymmetry of e + e − → cc events were carried out at a mean √s energy of 57.95 GeV at TRISTAN, KEK. The cc events were tagged either by the full-reconstruction of D ∗± or the inclusive P T spectrum of π s ± from D ∗± → D 0 ( D 0 )π s ± . The forward-backward asymmetry was measured to be A FB c = −0.49 −0.13 +0.14 (stat.) ± 0.06 (syst.), consistent with the standard model.
Published: 1993

37. Measurement of the inclusive cross section of jets in γγ interactions at TRISTAN

Author: T. Nagira, K. Miyabayashi, K. Emi, A. Yamaguchi, T. Takahashi, M. Aoki, Shiro Suzuki, K. Abe, F. Teramae, H. Hayashii, A. Yamamoto, T. Toyama, F. Ochiai, N. Toomi, M. Iwasaki, E. Nakano, T. Abe, I. Levine, Toru Tanimori, T. Shinohara, Y. Ohnishi, N. Fujiwara, T. Tsukamoto, K. Takahashi, R. Itoh, T. Tauchi, Masakazu Kobayashi, S. Awa, H. Kichimi, R. Kajikawa, K. Muramatsu, Hideki Okuno, K. Shimozawa, A. Sugiyama, K. Nakabayashi, Koichi Nagai, B. Howell, A. Miyamoto, Ryoji Enomoto, S. Uno, H. Fujii, S. Kato, Hiroyuki Iwasaki, K. Fujita, Y. Watanabe, J. Fujimoto, S. Noguchi, Hirokazu Ikeda, R. Belusevic, N. Sugiyama, T. Fujii, S. Kawabata, Osamu Nitoh, T. Okusawa, D.S. Koltick, N. Iida, I. Adachi, M. Takemoto, Keisuke Fujii, M. Yamauchi, and Y. Teramoto
Subjects: Cone algorithm, Physics, Nuclear and High Energy Physics, Particle physics, Jet (fluid), Photon, Astrophysics::High Energy Astrophysical Phenomena, Hadron, Photon structure function, law.invention, Nuclear physics, Cross section (physics), law, Energy flow, High Energy Physics::Experiment, Collider
Abstract: We have investigated the properties of jet production in almost real γγ collisions at √s=58 GeV with the TOPAZ detector at the TRISTAN e+e− collider. The data were analyzed with a jet-clustering method based on a cone algorithm. The jet rate shows evidence for a hard scattering effect of the hadronic constituents of a photon (resolved photon processes). We have also observed a substantial energy flow in the small-angle region, which is additional evidence for resolved photon processes. We present the transverse momentum dependence of the inclusive jet and two-jet cross sections and compare them with different model predictions.
Published: 1993

38. Search for a narrow resonance in e+e− collisions between ECM = 58 and 60 GeV

Author: K. Shimozawa, A. Yamaguchi, Makoto Kobayashi, M. Iwasaki, O. Nitoh, S. Kawabata, Toru Tanimori, Iki Adachi, T. Tsukamoto, T. Kishida, N. Fujiwara, Hirokazu Ikeda, T. Nagira, J. Fujimoto, E. Nakano, K. Nakabayashi, R. Belusevic, T. Takahashi, F. Ochiai, B. Howell, T. Okusawa, Y. Watanabe, H. Kichimi, M. Takemoto, Keisuke Fujii, K. Abe, K. Miyabayashi, S. Yamamoto, I. Levine, Y. Ohnishi, Shiro Suzuki, D.S. Koltick, Koichi Nagai, N. Iida, S. Awa, R. Kajikawa, N. Sugiyama, Masato Aoki, A. Sugiyama, Toshiaki Tauchi, S. Noguchi, R. Itoh, N. Toomi, Hiroshi G. Okuno, Y. Teramoto, A. Miyamoto, Ryoji Enomoto, S. Uno, Hiroyuki Iwasaki, T. Shinohara, S. Kato, K. Muramutsu, K. Emi, F. Teramae, K. Takahashi, T. Toyama, H. Fujii, K. Fujita, Toshitsugu Fujii, M. Yamauchi, Akira Yamamoto, and H. Hayashii
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Scalar (mathematics), Resonance, law.invention, Standard Model, Nuclear physics, law, High Energy Physics::Experiment, Tensor, Collider, Energy (signal processing)
Abstract: We carried out the energy scan between ECM = 58 and 60 GeV at the TRISTAN e+e− collider to search for the possible narrow resonance suggested by the L3 experiment at LEP. The total cross sections are measured for γγ, multihadron, e+e− and μ + μ− production at ten energy points covering this energy range almost uniformly. The results are in good agreement with the Standard Model predictions, and 95% confidence level upper limits are set to Γee × BR of the hypothetical scalar and tensor resonances.
Published: 1993

39. First Measurement of InclusiveB→XsηDecays

Author: Y. Yamashita, Ping Zhou, Zhenyu Zhang, T. E. Browder, A. Drutskoy, M. J. Kim, S. Uno, C. Schwanda, J. G. Shiu, Kevin Varvell, Z. Dolex̌al, K. Miyabayashi, S. Suzuki, R. Louvot, J. Dalseno, A. Matyja, S. L. Olsen, M. Danilov, M. Starič, Hiroaki Aihara, T. Kumita, C. W. Park, T. Mori, Y. F. Liu, S. H. Kyeong, Yasuyuki Horii, Y. Chao, H. O. Kim, Y. Choi, J. Li, T. Hara, T. Zivko, T. Iijima, P. Kapusta, C. Kiesling, B. Golob, T. Aushev, V. Bhardwaj, Y. Teramoto, M. Z. Wang, I. S. Cho, M. J. Lee, K. Kinoshita, K. Senyo, H. Kawai, M. Bračko, M. Yamauchi, T. Kawasaki, C. H. Wang, Y. Sakai, K. Belous, S. Korpar, B. G. Cheon, J. S. Lange, E. Solovieva, C. C. Chiang, Andrey Sokolov, M. Nakao, O. Seon, Frank Simon, J. H. Kang, K. Nishimura, B. R. Ko, S. McOnie, K. S. Park, Vladislav Balagura, K. M. Williams, E. L. Barberio, O. Zyukova, A. Chen, Y. Watanabe, H. Park, A. Bozek, H. Miyata, L. E. Piilonen, M. Bischofberger, Y. Hoshi, C. C. Zhang, G. Pakhlova, H. Hayashii, S. Nishida, K. Hayasaka, T. Julius, Po-Hsun Chen, K. Inami, D. Liventsev, A.E. Bondar, G. S. Varner, R. Itoh, P. Wang, M. C. Chang, M. Iwabuchi, H. Kichimi, T. Sumiyoshi, Sang Hoon Lee, A. M. Bakich, Z. Natkaniec, T. Ohshima, I. Adachi, G. B. Mohanty, N. Gabyshev, J. Wicht, Vladimir Zhulanov, S.I. Eidelman, W. S. Hou, M. E. Sevior, K. F. Chen, M. Shapkin, M. Röhrken, Y. J. Kim, S. Uehara, W. Ostrowicz, P. Krix̌an, H. Nakazawa, H. Ha, R. Pestotnik, A. J. Schwartz, H. J. Kim, J. Haba, Chang Liu, Sunmin Ryu, E. Won, K. Vervink, E. Nakano, N. J. Joshi, K. Trabelsi, C. P. Shen, Marko Petrič, H. J. Hyun, P. Smerkol, Y. Miyazaki, K. Arinstein, S. Ogawa, Yoshinobu Unno, Peter Kodys, Y. Iwasaki, Y. J. Kwon, Anze Zupanc, O. Schneider, A.S. Kuzmin, H. Sahoo, T. Uglov, and H. K. Park
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, Strangeness, 01 natural sciences, law.invention, Nuclear physics, Particle decay, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Collider, Dimensionless quantity, Bar (unit)
Abstract: We report a first measurement of inclusive B→Xsη decays, where Xs is a charmless state with unit strangeness. The measurement is based on a pseudoinclusive reconstruction technique and uses a sample of 657×10(6)BB pairs accumulated with the Belle detector at the KEKB e+e- collider. For MXs2.6 GeV/c2, we measure a branching fraction of [26.1±3.0(stat)-2.1+1.9(syst)-7.1+4.0(model)]×10(-5) and a direct CP asymmetry of ACP=-0.13±0.04-0.03+0.02. Over half of the signal occurs in the range MXs1.8 GeV/c2.
Published: 2010

40. Evidence forB−→τ−ν¯τwith a semileptonic tagging method

Author: Y. J. Kim, H. Ozaki, R. Pestotnik, J. Li, I. Tikhomirov, A. Chen, Tariq Aziz, Y. Choi, S. L. Olsen, B. R. Ko, T. Iijima, O. Nitoh, P. Goldenzweig, C. C. Chiang, M. Yamauchi, M. Rozanska, B. G. Cheon, H. Kawai, B. Golob, T. Zivko, Y. B. Hsiung, A. Bozek, Y. Ushiroda, T. Kuhr, G. B. Mohanty, C. Z. Yuan, C. W. Park, P. Križan, K. Belous, S. Korpar, K. Inami, Y. Iwasaki, Y. J. Kwon, Sunmin Ryu, O. Schneider, T. E. Browder, J. B. Singh, J. G. Shiu, E. Won, H. Sahoo, J. Dalseno, P. Krokovny, K. Senyo, M. Z. Wang, K. Kinoshita, J. H. Kang, M. Danilov, K. Nishimura, E. Nakano, T. Sumiyoshi, T. Kawasaki, T. Uglov, Yoji Hasegawa, V.N. Zhilich, Y. Watanabe, S. Nishida, K. Trabelsi, Sang Hoon Lee, Yasuyuki Horii, R. Louvot, D. Liventsev, M. J. Kim, A.E. Bondar, Y. Sakai, G. S. Varner, M. Starič, S. Neubauer, T. Kumita, K. Miyabayashi, P. Wang, Z. Doležal, H. Miyata, M. Bischofberger, Y. Hoshi, S. Uno, C. Schwanda, S.I. Eidelman, H. Hayashii, Antonio Limosani, J. Schümann, K. Hayasaka, A. Kuzmin, K. Vervink, E. Solovieva, M. Iwabuchi, L. E. Piilonen, H. Nakazawa, S. Ogawa, G. Pakhlova, T. Nozaki, Anze Zupanc, V.M. Aulchenko, A. J. Schwartz, Kazuhiko Hara, T. Julius, E. L. Barberio, Marko Petrič, H. J. Hyun, O. Zyukova, P. Smerkol, W. Dungel, K. Sumisawa, Peter Kodys, Y. Miyazaki, Y. Unno, H. K. Park, Y. Yamashita, S. H. Kyeong, I. S. Cho, C. H. Wang, Michal Kreps, M. Nakao, S. McOnie, H. J. Kim, Y. F. Liu, C. C. Zhang, H. O. Kim, H. Shibuya, Kevin Varvell, A. Matyja, T. Mori, H. Aihara, S. Uehara, H. Ha, H. Kichimi, S. Okuno, T. Aushev, B.A. Shwartz, Y. Teramoto, Bruce Yabsley, M. E. Sevior, Y. Chao, C. Kiesling, M. J. Lee, M. T. Prim, M. Bračko, A. M. Bakich, P. Chang, T. Ohshima, Jung-Hyun Kim, N. Gabyshev, Samo Stanič, M. Shapkin, and Robin Wedd
Subjects: Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, 01 natural sciences, b-tagging, Nuclear physics, Particle decay, KEKB, 0103 physical sciences, CP violation, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: We present a measurement of the decay B- -> tau(-)(nu) over bar (tau) using a data sample containing 657 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. A sample of B+B- pairs are tagged by reconstructing one B+ meson decaying semileptonically. We detect the B- -> tau(-)(nu) over bar (tau) candidate in the recoil. We obtain a signal with a significance of 3.6 standard deviations including systematic uncertainties, and measure the branching fraction to be B- -> tau(-)(nu) over bar (tau) [1.54(-0.37)(+0.38) (stat) (+0.29)(-0.31) (syst) x 10(-4). This result confirms the evidence for B- -> tau(-)(nu) over bar (tau) obtained in a previous Belle measurement that used a hadronic B tagging method.
Published: 2010

41. Measurement of the branching fractions forB0→Ds+π−andB0→Ds−K+decays

Author: Kevin Varvell, A. Matyja, P. Goldenzweig, T. Mori, H. Aihara, Tariq Aziz, B.A. Shwartz, T. Sumiyoshi, Y. Usov, T. Iijima, B. G. Cheon, Sang Hoon Lee, J. G. Shiu, J. Dalseno, Y. Choi, A. Zupanc, S. Okuno, E. Nakano, M. Yamauchi, K. Belous, T. Kuhr, M. E. Sevior, O. Nitoh, C. Liu, T. Aushev, M. Starič, L. E. Piilonen, M. Z. Wang, K. Kinoshita, M. Bischofberger, Y. Hoshi, S.I. Eidelman, G. Pakhlova, Y. Teramoto, Michal Kreps, K. Sakai, M. Nakao, K. Hayasaka, J. Stypula, T. E. Browder, G. N. Taylor, A. Kuzmin, Bruce Yabsley, A. M. Bakich, S. McOnie, P. Križn, K. Trabelsi, B. Golob, Motoki Iwasaki, Marko Petrič, J. Wiechczynski, H. J. Kim, S. Ogawa, N. J. Joshi, C. P. Shen, Z. Natkaniec, T. Ohshima, T. Julius, Anton Poluektov, Po-Hsun Chen, Y. Iwasaki, Y. J. Kwon, S. Uehara, H. Ha, O. Schneider, Masashi Hazumi, P. Krokovny, H. J. Hyun, P. Smerkol, S. L. Olsen, Y. Sakai, V.N. Zhilich, Z. P. Zhang, H. O. Kim, R. Louvot, J. Haba, A. Bay, C. W. Park, I. Adachi, S. Nishida, H. Hayashii, H. Sahoo, Peter Kodys, X. L. Wang, B. R. Ko, N. Gabyshev, Sunmin Ryu, E. Won, E. Solovieva, V. Bhardwaj, K. Vervink, V.M. Aulchenko, Vladislav Balagura, M. C. Chang, Andrey Sokolov, Y. I. Kim, E. L. Barberio, O. Zyukova, J. H. Kang, K. Arinstein, R. Mizuk, S. Uno, K. Nishimura, C. Schwanda, M. Iwabuchi, T. Zivko, Y. B. Hsiung, P. Chang, Y. Miyazaki, Jung-Hyun Kim, W. S. Hou, M. J. Lee, K. Inami, M. Bračko, S. K. Kim, H. Park, A. Bozek, Y. Watanabe, S. Neubauer, Y. Unno, Samo Stanič, K. Miyabayashi, K. Senyo, C. C. Zhang, T. Kawasaki, Y. Chao, B. Y. Han, D. Liventsev, G. S. Varner, R. Itoh, I. S. Cho, P. Wang, A. J. Schwartz, C. H. Wang, A. Das, H. K. Park, Y. Yamashita, Yang Liu, S. H. Kyeong, A.E. Bondar, Z. Doležal, J. B. Singh, A. Drutskoy, Yasuyuki Horii, M. Shapkin, Robin Wedd, Y. J. Kim, Z. Drásal, J. Li, and A. Chen
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle decay, Particle physics, Pion, KEKB, Branching fraction, Electron–positron annihilation, CP violation, B meson, Dimensionless quantity
Abstract: We present a study of B0→Ds*+π- and B0→Ds*-K+ decays based on a sample of 657×106 BB events collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure the branching fractions to be B(B0→Ds*+π-)=(1.75±0.34(stat)±0.17(syst) ±0.11(B))×10-5 and B(B0→Ds*-K +)=(2.02±0.33(stat)±0.18(syst)±0.13(B)) ×10-5, with significances of 6.1 and 8.0 standard deviations, respectively. The first uncertainty is statistical, the second is due to the experimental systematics, and the third is from uncertainties in the Ds+ decay branching fractions. From our measurements, we obtain the most precise determination so far of RD*π, where RD*π is the ratio between amplitudes of the doubly Cabibbo-suppressed decay B0→D*+π- and the Cabibbo-favored B0→D*-π+ decay. © 2010 The American Physical Society.
Published: 2010

42. Cross sections and charge asymmetries for e+e−→μ+μ− and e+e−→τ+τ−reactions at

Author: Makoto Kobayashi, S. Kato, Toshitsugu Fujii, E. Sakai, K. Emi, Tomohiro Abe, M. Yamauchi, Akira Yamamoto, A. Shimonaka, Shiro Suzuki, K. Miyabayashi, Koichi Nagai, I. Levine, O. Nitoh, F. Teramae, Akiya Miyamoto, T. Toyama, Y. Ohnishi, T. Kishida, Ryoji Enomoto, Michael Doser, F. Ochiaj, M. Takemoto, K. Harigae, Junpei Fujimoto, N. Fujiwara, Keisuke Fujii, T. Tsukamoto, Hirokazu Ikeda, R. Rajikawa, A. Shirahashi, Hideki Okuno, M. Iwasaki, Masato Aoki, T. Nagira, T. Takahashi, N. Sugiyama, Toru Tanimori, Minoru Nakayama, Y. Teramoto, K. Shimozawa, A. Sugiyama, Toshiaki Tauchi, H. Hayashii, R. Itoh, B. Howell, R. Belusevic, H. Fujii, K. Muramatsu, S. Noguchi, Y. Watanabe, H. Kichimi, N. Tachibana, E. Nakano, S. Yamamoto, S. Uno, Hiroyuki Iwasaki, I. Adachi, Naoko Iida, D.S. Koltick, S. Kawabata, T. Okusawa, and K. Takahashi
Subjects: Physics, Nuclear physics, Topaz, Nuclear and High Energy Physics, Range (particle radiation), Luminosity (scattering theory), Electron–positron annihilation, engineering, Charge (physics), engineering.material, Pseudovector, Standard Model, Lepton
Abstract: The process e+e−→μ+μ−and e+e− have been studied in the energy range s=52−61.4 GeV, using the TOPAZ detector at TRISTAN. From an integrated luminosity of L = 74.0 pb−1, lowest-order cross sections and forward-backward asymmetries are measured to be 〈σμμ〈 = 25.4±0.9±1.2 pb, 〈Aμμ〉 = (−32.2±3.1±1.1)%, 〈σττ〉 = 27.1±1.1±1.2 pb, 〈Aττ〉 = (−33.9±4.9±1.0)% , at an average energy of s〉=57.87 GeV. From the measured assymetry we derive axial vector couplings of acaμ=0.96±0.09±0.01,and acaτ=1.01±0.14±0.01±. These results are consistent with standard model expectations. Lower limits in the range 2–5 TeV (95%CL)are placed on compositeness scale parameters for leptons.
Published: 1992

43. Studies of e+e−→γγ and γγγ reactions

Author: K. Harigae, H. Iwasaki, J. Fujimoto, R. Kajikawa, Shiro Suzuki, K. Muramatsu, N. Iida, R. Itoh, T. Tsukamoto, K. Shimozawa, Toru Tanimori, N. Fujiwara, Koichi Nagai, A. Miyamoto, M. Ohkura, T. Takahashi, T. Nagira, Shimpei Yamamoto, S. Noguchi, S. Uno, N. Tachibana, K. Takahashi, T. Tauchi, A. Shimonaka, H. Takamure, A. Shirahashi, A. Sugiyama, Masakazu Kobayashi, Hideki Okuno, Keisuke Fujii, I. Adachi, K. Miyabayashi, H. Nishioka, T. Abe, E. Sakai, Akira Yamamoto, Y. Watanabe, B. Howell, S. Kawabata, E. Nakano, Shigeaki Kato, Y. Kato, I. Levine, Y. Ohnishi, M. Doser, Osamu Nitoh, T. Kamae, F. Ochiai, H. Fujii, Ryoji Enomoto, H. Kichimi, Y. Teramoto, D.S. Koltick, N. Fujio, T. Okusawa, T. Kishida, Hirokazu Ikeda, N. Nakagawa, M. Nakajima, M. Yamauchi, Minoru Nakayama, T. Fujii, S. Hori, and H. Hayashii
Subjects: Massless particle, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Effective mass (solid-state physics), Annihilation, Electron–positron annihilation, Mass spectrum, Elementary particle, Spectral line, Boson
Abstract: We have measured the cross section for γγ production with the TOPAZ detector in the energy region √ s =50.0–61.4 GeV. The observed cross section for γγ production integrated over |cos θ | ⩽ 0.77 is 50.2±0.8±2.2 pb at 〈√ s 〉=57.6 GeV and the ratio of this value to the QED prediction is 1.01±0.02±0.04. The angular distribution is in good agreement with the QED predictions, thereby setting limits on the compositeness scales, Λ L+R + =168 GeV, Λ L+R − =97 GeV, Λ L,R =141 GeV, Λ L,R − =81 GeV, and Λ L−R ± =68 GeV, at the 95% confidence level. The reaction e + e − → γγγ was also studied and was found consistent with the QED prediction.
Published: 1992

44. An experimental study of muon pair production in tagged two-photon interactions

Author: Ryoji Enomoto, Minoru Nakayama, Y. Teramoto, A. Miyamoto, T. Kishida, S. Kawabata, Hirokazu Ikeda, Makoto Kobayashi, H. Takamure, K. Harigae, T. Nagira, S. Noguchi, T. Abe, N. Fujio, S. Kato, N. Fujiwara, Keisuke Fujii, I. Adachi, B. Howell, Toru Tanimori, M. Nakajima, K. Miyabayashi, K. Shimozawa, T. Okusawa, Koichi Nagai, H. Fujii, H. Hayashii, A. Shimonaka, E. Sakai, S. Hori, T. Takahashi, Y. Watanabe, H. Kichimi, K. Takahashi, J. Fujimoto, N. Tachibana, N. Nakagawa, D.S. Koltick, H. Nishioka, Shiro Suzuki, A. Sugiyama, Toshiaki Tauchi, M. Doser, Y. Kato, Toshitsugu Fujii, Hiroshi G. Okuno, I. Levine, M. Yamauchi, Akira Yamamoto, Y. Ohnishi, R. Kajikawa, K. Muramatsu, M. Ohkura, T. Tsukamoto, E. Nakano, A. Shirahashi, S. Uno, T. Kamae, Hiroyuki Iwasaki, S. Yamamoto, N. Iida, R. Itoh, F. Ochiai, and O. Nitoh
Subjects: Physics, Nuclear reaction, Nuclear physics, Nuclear and High Energy Physics, Antiparticle, Pair production, Muon, Luminosity (scattering theory), Antimatter, Mass spectrum, High Energy Physics::Experiment, Lepton
Abstract: The process e + e − →e + e − μ + μ − has been studied in single-tag and double-tag configurations using the TOPAZ detector at TRISTAN. The data correspond to the integrated luminosity of 45.3pb − at center-of-mass energies ranging from 52 to 61.4 GeV. The observed events in both configurations have shown a good agreement with QED predictions in order α 4 . Although the AMY group reported an excess of e + e − →e + e − μ + μ − events in double-tag mode at low muon invariant mass region less than 1.0 GeV/c 2 , we did not observed such excess in our data.
Published: 1992

45. Experimental study of b-quark jets in e+e− annihilation at TRISTAN

Author: E. Sakai, Y. Kato, I. Levine, M. Ohkura, T. Tsukamoto, A. Shirahashi, Hideki Okuno, S. Noguchi, Toru Tanimori, Shiro Suzuki, Akira Yamamoto, T. Tauchi, H. Takamure, Masakazu Kobayashi, Y. Teramoto, H. Fujii, K. Harigae, H. Hayashii, Minoru Nakayama, T. Fujii, S. Uno, Koichi Nagai, N. Iida, J. Fujimoto, T. Kishida, R. Itoh, K. Takahashi, T. Nagira, Hirokazu Ikeda, T. Ohnishi, M. Doser, K. Shimozawa, I. Adachi, Y. Watanabe, A. Shimonaka, N. Fujio, T. Abe, T. Takahashi, S. Yamamoto, D.S. Koltick, N. Tachibana, H. Nishioka, N. Nakagawa, Ryoji Enomoto, S. Kawabata, E. Nakano, S. Kato, Osamu Nitoh, B. Howell, T. Kamae, H. Kichimi, F. Ochiai, R. Kajikawa, A. Miyamoto, K. Muramatsu, Hiroyuki Iwasaki, Keisuke Fujii, A. Sugiyama, N. Fujiwara, T. Okusawa, K. Miyabayashi, M. Nakajima, M. Yamauchi, and S. Hori
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Meson, Astrophysics::High Energy Astrophysical Phenomena, Bottom quark, Charged particle, Nuclear physics, Pair production, Physics::Accelerator Physics, High Energy Physics::Experiment, B meson, Rapidity, Lepton
Abstract: An experimental study of b-quark jets using high-pT electrons was carried out at √s=58 GeV with the TOPAZ detector at the e+e− collider TRISTAN at KEK. The forward-backward charge asymmetry of the b-quark was obtained to be A b b =−0.55±0.27( stat. )±0.07( syst. ) , consistent with the standard model prediction. Also, such jet properties of the b-quark as the average charged multiplicity and the rapidity of charged particles were analyzed. In order to purify the b-quark event samples in this analysis, only events with backward-going electrons or forward-going positrons were used. The energy dependence of these jet properties was studied by making comparisons with the results of the DELCO experiment at the PEP collider (√s=29 GeV) at SLAC.
Published: 1992

46. Measurement ofD+→KS0K+andDs+→KS0π+branching ratios

Author: I. S. Cho, Y. Iwasaki, Y. J. Kwon, A. Vinokurova, C. H. Wang, P. Krokovny, O. Schneider, Anton Poluektov, S. Uehara, H. Ha, N. Katayama, H. Palka, L. E. Piilonen, G. Pakhlova, A.S. Kuzmin, K. Trabelsi, Marko Petrič, H. J. Hyun, V.M. Aulchenko, P. Smerkol, S. Okuno, A.E. Bondar, C. C. Zhang, A. Zupanc, H. Hayashii, E. L. Barberio, O. Zyukova, Y. Sakai, T. Julius, Po-Hsun Chen, L. S. Peak, T. Aushev, S. K. Kim, O. Nitoh, Y. Miyazaki, Y. Teramoto, H. K. Park, Hiroaki Aihara, Y. Yamashita, E. Nakano, D. Epifanov, Bruce Yabsley, B. R. Ko, R. Louvot, T. Iijima, V.E. Shebalin, K. Vervink, Yang Liu, B. G. Cheon, B.A. Shwartz, K. Inami, S. Nishida, M. Starič, T. Kawasaki, H. Miyata, K. S. Park, S. H. Kyeong, M. Bischofberger, B. Y. Han, Zhenyu Zhang, H. Sahoo, Vladislav Balagura, F. Mandl, Y. Watanabe, Vladimir Zhulanov, Y. Hoshi, D. Liventsev, M. E. Sevior, Yoji Hasegawa, A. Chen, E. Solovieva, N. J. Joshi, G. N. Taylor, G. S. Varner, K. Hayasaka, S. Esen, H. O. Kim, S. Ryu, R. Itoh, S. Uno, C. Schwanda, P. Wang, P. Chang, T. Sumiyoshi, J. Li, Jung-Hyun Kim, S.I. Eidelman, K. Arinstein, M. Shapkin, Y. I. Kim, Robin Wedd, Y. J. Kim, T. Zivko, Y. B. Hsiung, Kevin Varvell, R. Pestotnik, Y. Choi, M. Yamauchi, T. Mori, Y. Usov, Yoshinobu Unno, T. E. Browder, P. Pakhlov, H. Park, A. Bozek, V.N. Zhilich, W. S. Hou, B. Golob, V. Bhardwaj, A. Garmash, J. S. Lange, H. Nakazawa, E. Won, H. J. Kim, Chang Liu, Soohyung Lee, Samo Stanič, Anirban Das, A. M. Bakich, Z. Natkaniec, T. Ohshima, A. Bay, C. W. Park, N. Gabyshev, Andrey Sokolov, J. H. Kang, C. Kiesling, M. J. Lee, M. Bračko, J. G. Shiu, J. Dalseno, Phillip Urquijo, M. Nakao, S. McOnie, M. Iwasaki, C. C. Chiang, J. Haba, T. Kumita, K. Belous, and S. Korpar
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Branching (polymer chemistry), 01 natural sciences, law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, 010306 general physics, Collider
Abstract: We report an improved measurement of D+->(KSK+)-K-0 and D-s(+)-> K-S(0)pi(+) branching ratios using 605 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured branching ratios with respect to the Cabibbo-favored modes are B(D+->(KSK+)-K-0)/B(D+-> K-S(0)pi(+))=0.1899 +/- 0.0011 +/- 0.0022 and B(D-s(+)-> K-S(0)pi(+))/B(D-s(+)->(KSK+)-K-0)=0.0803 +/- 0.0024 +/- 0.0019 where the first uncertainties are statistical and the second are systematic.
Published: 2009

47. Measurement of the DecayBs0→Ds−π+and Evidence forBs0→Ds∓K±ine+e−Annihilation ats≈10.87 GeV

Author: R. Mizuk, H. Kawai, L. E. Piilonen, S. Eidelman, G. Pakhlova, Yoshinobu Unno, P. Goldenzweig, E. Won, A. Ishikawa, A. Bay, S. E. Lee, A. Matyja, E. Nakano, M. Starič, C. W. Park, Y. J. Kwon, M. Yamauchi, O. Schneider, H. Ishino, T. Mori, C. C. Wang, A. Zupanc, R. Chistov, O. Zyukova, J. G. Shiu, A. Bozek, T. Iijima, N. Zwahlen, O. Nitoh, I. S. Cho, S. K. Kim, J. Wicht, Tatiana Medvedeva, Jasvinder A. Singh, S. W. Lin, J. Li, A. Sekiya, N. J. Joshi, M. Dash, S. Ogawa, H. J. Hyun, Hiroaki Aihara, M. Nakao, J. H. Kang, B. Golob, V. Bhardwaj, P. Krian, V.N. Zhilich, K. Inami, Zhenyu Zhang, W. Dungel, K. Miyabayashi, Rakesh Kumar, I. Adachi, S. McOnie, C. H. Wang, S. Nishida, J. S. Lange, H. Miyake, A. Somov, X. L. Wang, F. Mandl, P. Krokovny, Vladimir Zhulanov, A. Drutskoy, A. J. Schwartz, W. S. Hou, K. Sumisawa, Y. Sakai, Y. I. Kim, Y. Miyazaki, K. Arinstein, H. Hayashii, K. Trabelsi, M. J. Lee, M. E. Sevior, M. Bračko, Joowon Lee, T. Sumiyoshi, B. G. Cheon, Jeremy Dalseno, H. K. Park, Y. Yamashita, K. Kinoshita, Masashi Hazumi, T. E. Browder, D. H. Kah, G. N. Taylor, M. Tanaka, Vladislav Balagura, H. Sahoo, S. Okuno, M. Danilov, S. H. Kyeong, I. Tikhomirov, A. Chen, T. Uglov, T. Aushev, Y. Teramoto, Bruce Yabsley, Samo Stanič, M. Shapkin, Robin Wedd, Y. J. Kim, H. Ozaki, A. M. Bakich, T. Ohshima, S. Uehara, S. Uno, K. Senyo, N. Gabyshev, H. Ha, T. Zivko, R. Pestotnik, N. Katayama, R. Louvot, T. Kawasaki, Y. Choi, J. Haba, A.S. Kuzmin, Antonio Limosani, H. Miyata, Y. Hoshi, D. Liventsev, J. Schümann, K. Hayasaka, U. Bitenc, G. S. Varner, K. Vervink, R. Itoh, H. Kichimi, P. Wang, Yu. V. Usov, Y. Watanabe, T. Lesiak, V. M. Aulchenko, M. Iwasaki, A. Bondar, and S. Korpar
Subjects: Physics, Annihilation, 010308 nuclear & particles physics, Branching fraction, General Physics and Astronomy, Resonance, 01 natural sciences, law.invention, Nuclear physics, Particle decay, KEKB, Positron, Pair production, law, 0103 physical sciences, 010306 general physics, Collider
Abstract: We have studied Bs0→Ds-π+ and Bs0→Ds K± decays using 23.6fb-1 of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+e- collider. This highly pure Bs0→Ds-π+ sample is used to measure the branching fraction, B(Bs0→Ds-π+)=[3.67-0.33+0.35(stat)-0. 42+0.43(syst)±0.49(fs)]×10-3 (fs=NBs(*)Bs(*)/ Nbb) and the fractions of Bs0 event types at the Υ(5S) energy, in particular NBs*Bs*/NBs(*)Bs(*)=(90.1-4.0+3. 8±0.2)%. We also determine the masses M(Bs0)=(5364.4±1.3±0. 7)MeV/c2 and M(Bs*)=(5416.4±0.4±0.5)MeV/c2. In addition, we observe Bs0→Ds K± decays with a significance of 3.5σ and measure B(Bs0→Ds K±)=[2.4-1.0+1.2(stat)±0.3(syst)±0. 3(fs)]×10-4. © 2009 The American Physical Society.
Published: 2009

48. Measurements of b-quark forward-backward charge asymmetry and axial-vector coupling using inclusive muons in e+e− annihilation at

Author: Akira Yamamoto, Shiro Suzuki, K. Kurata, T. Okusawa, M. Ohkura, Toru Tanimori, Masakazu Kobayashi, Shimpei Yamamoto, S. Kawabata, Iki Adachi, K. Harigae, Osamu Nitoh, N. Iida, H. Fujii, Akiya Miyamoto, A. Shimonaka, Michael Doser, A. Shirahashi, S. Uno, Junpei Fujimoto, T. Kamae, H. Hayashii, Y. X. Watanabe, R. Itoh, N. Fujio, Toshitsugu Fujii, A. Sugiyama, Toshiaki Tauchi, R. Kajikawa, Hiroshi G. Okuno, Ryoji Enomoto, T. Takahashi, Tomohiro Abe, K. Muramatsu, Hiroyuki Iwasaki, T. Tachibana, H. Nishioka, M. Nakajima, M. Yamauchi, E. Nakano, S. Hori, K. Shimozawa, D.S. Koltick, K. Takahashi, H. Kichimi, F. Ochiai, K. Miyabayashi, N. Fujiwara, Minoru Nakayama, Y. Teramoto, N. Nakagawa, S. Noguchi, E. Sakai, T. Kishida, T. Nagira, Hirokazu Ikeda, Y. Kato, I. Levine, T. Tsukamoto, Y. Ohnishi, Shigeaki Kato, B. Howell, Koichi Nagai, Keisuke Fujii, and H. Takamure
Subjects: Coupling constant, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Muon, Meson, Electron–positron annihilation, Astrophysics::Cosmology and Extragalactic Astrophysics, Bottom quark, Nuclear physics, Pair production, High Energy Physics::Experiment, B meson, Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract: We have collected 122 multi-hadronic inclusive muon events with the TOPAZ detector at 〈s〉 = 58.27 GeV with ∫Ldt=40.61 pb−1. From this event sample we derived the differential cross section for B-hadron productions and determined B-hadron forward-backward asymmetry (Abb) to be Abb = −0.71 ± 0.34 (stat)+0.07−0.08(syst). A fit to the differential cross section, after correcting for the effect of B0B0 mixing, yielded the axial-vector coupling constant of the b-quark (ab):ab = −1.79+0.34−0.32(stat)+0.15−0.14(syst). We also set a 90% confidence level limit of χ
Published: 1991

49. Charge asymmetry of hadronic events in e+e− annihilation at √s=57.9 GeV

Author: Shiro Suzuki, A. Shimonaka, S. Kawabata, M. Doser, R. Itoh, R. Sugahara, Osamu Nitoh, M. Ohkura, A. Maruyama, H. Takamure, S. Uno, Toru Tanimori, T. Takahashi, K. Kurata, K. Iwashiro, K. Shimozawa, B. Howell, Keisuke Fujii, N. Nakajima, N. Fujio, Y. Watanabe, Terushige Fujii, K. Takahashi, Shimpei Yamamoto, Y. Kato, N. Fujiwara, T. Tauchi, Masakazu Kobayashi, I. Levine, F. Ochiai, T. Okusawa, K. Matsushita, Y. Yoake, T. Nagira, A. Imanishi, N. Iida, Ryoji Enomoto, T. Kamae, A. Shirahashi, H. Nishioka, Hiroshi G. Okuno, S. Onodera, T. Ishii, K. Muramatsu, M. Yamauchi, T. Kishida, S. Noguchi, D.S. Koltick, S. Hori, Hirokazu Ikeda, T. Tsukamoto, N. Nakagawa, M. Anazawa, A. Sugiyama, J. Yoshizawa, I. Adachi, Akira Yamamoto, J. Fujimoto, Y. Teramoto, Shigeaki Kato, Koichi Nagai, H. Fujii, H. Kichimi, R. Kajikawa, A. Miyamoto, K. Maruyama, Hiroyuki Iwasaki, and H. Hayashii
Subjects: Quark, Coupling constant, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, media_common.quotation_subject, High Energy Physics::Phenomenology, Hadron, Asymmetry, Standard Model, Nuclear physics, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, media_common, Lepton
Abstract: 著者人数：70名, 資料番号: SA1002290000
Published: 1991

50. Evidence for NeutralBMeson Decays toωK*0

Author: R. Mizuk, P. Goldenzweig, Joowon Lee, J. G. Shiu, E. Nakano, A. M. Bakich, T. Ohshima, M. J. Lee, M. Bračko, Yoshinobu Unno, Phillip Urquijo, K. F. Chen, M. Yamauchi, T. E. Browder, A. Ishikawa, Y. Watanabe, P. Chang, Samo Stanič, A. Bay, S. E. Lee, Masashi Hazumi, I. S. Cho, Antonio Limosani, M. Nakao, S. Uehara, C. W. Park, P. Križan, H. Ha, Zhenyu Zhang, H. Sahoo, J. Wicht, S. McOnie, K. Vervink, T. Iijima, W. S. Hou, R. Seidl, L. S. Peak, M. Iwasaki, S. Bahinipati, J. MacNaughton, K. Arinstein, G. S. Varner, T. Uglov, A. Drutskoy, H. Hayashii, S. Suzuki, I. Bedny, J. Li, P. Krokovny, P. Wang, Yu. V. Usov, C. H. Wang, A. Somov, V. M. Aulchenko, Jasvinder A. Singh, S. W. Lin, A. Bondar, S. Korpar, Y. Choi, K. Miyabayashi, S. Okuno, P. Pakhlov, M. Z. Wang, K. Kinoshita, I. Adachi, M. Starič, N. Tamura, H. Kichimi, K. Sumisawa, O. Zyukova, T. Aushev, A.S. Kuzmin, S. L. Olsen, B. G. Cheon, V.E. Shebalin, Yu-xi Liu, Rakesh Kumar, H. Park, A. Bozek, K. Senyo, T. Zivko, A. Zupanc, Y. Teramoto, K. Trabelsi, Bruce Yabsley, O. Nitoh, I. Tikhomirov, A. Chen, M. Dash, T. Kawasaki, C. P. Shen, Y. J. Kwon, M. Shapkin, S. Nishida, Robin Wedd, Kevin Varvell, Y. J. Kim, T. Lesiak, H. Ozaki, Hiroaki Aihara, X. L. Wang, O. Schneider, Y. Chao, K. Inami, C. C. Chiang, B. Golob, C. C. Zhang, Y. I. Kim, V. Bhardwaj, Y. Sakai, R. Pestotnik, S. Eidelman, S. Ogawa, J. S. Lange, H. K. Park, J. H. Kang, Y. Yamashita, F. Mandl, A. Sekiya, T. Sumiyoshi, Jeremy Dalseno, Vladimir Zhulanov, S. K. Kim, M. E. Sevior, H. Nakazawa, T. Nagamine, S. H. Kyeong, E. Won, W. Ostrowicz, H. Palka, M. Tanaka, A. J. Schwartz, H. J. Kim, L. E. Piilonen, G. Pakhlova, Chang Liu, S. Uno, C. Schwanda, D. Heffernan, R. Chistov, H. J. Hyun, Y. Miyazaki, Hirokazu Ishino, U. Bitenc, C. C. Wang, D. H. Kah, Y. B. Hsiung, H. Miyata, Y. Hoshi, J. Schümann, and K. Hayasaka
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, 01 natural sciences, Omega, Nuclear physics, Particle decay, KEKB, Pion, 0103 physical sciences, B meson, 010306 general physics
Abstract: We present the results of a study of the charmless vector-vector decay B-0 -> omega K*(0) with 657 X 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB e(+)e(-) collider. We measure the branching fraction to be B(B-0 -> omega K*(0)) = [1.8 +/- 0.7(stat) +/- 0.3(syst)] X 10(-6) with 3.0 sigma significance. We also perform a helicity analysis of the omega and K*(0) vector mesons, and obtain the longitudinal polarization fraction f(L)(B-0 -> omega K*(0)) = 0.56 +/- 0.29(stat)(-0.08)(+0.18)(syst). Finally, we measure a large nonresonant branching fraction B[B-0 -> omega K+ pi(-); M-K pi is an element of (0.755, 1.250) GeV/c(2)] = [5.1 +/- 0.7(stat) +/- 0.7(syst)] X 10(-6) with a significance of 9.5 sigma.
Published: 2008

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