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2,017 results on '"S. Uehara"'

201. Measurement of the Branching FractionB(Λc+→pK−π+)

Author: A. Garmash, M. Steder, V.N. Zhilich, G. Schnell, M. J. Kim, T. Iijima, M. Starič, I. Jaegle, K. Miyabayashi, L. E. Piilonen, T. Kumita, T. Kuhr, S. Nishida, H. K. Park, Y. Yamashita, E. Nedelkovska, A. M. Bakich, Z. Natkaniec, G. Pakhlova, I. Adachi, H. Nakazawa, D. Cinabro, A. Rostomyan, B. Golob, S. Yashchenko, J. B. Kim, T. Julius, V. Chekelian, H. J. Kim, N. Gabyshev, D. Červenkov, R. Chistov, S. Ganguly, Chang Liu, Y. Iwasaki, Y. J. Kwon, Jung-Hyun Kim, O. Schneider, D. A. Epifanov, B. Bhuyan, Sunmin Ryu, E. Won, T. Sumiyoshi, M. Niiyama, T. E. Browder, A. Zupanc, Sang Hoon Lee, H. Farhat, M. Feindt, A.S. Kuzmin, Yang Li, J. Klucar, T. Sanuki, Yongsun Kim, S. L. Olsen, S. Uno, C. Schwanda, T. Iwashita, Hitoshi Yamamoto, P. Vanhoefer, Y. Choi, O. Nitoh, R. Gillard, N. K. Nisar, K. Trabelsi, V. Savinov, H. Hayashii, K. Dutta, L. Santelj, V. Gaur, I. S. Cho, C. P. Shen, M. C. Chang, S. Ogawa, A.L. Sibidanov, M. Nakao, W. S. Hou, Y. S. Sohn, Z. Drásal, J. G. Shiu, J. Dalseno, T. Aushev, X. H. He, Y. M. Goh, Hiroaki Aihara, T. Ferber, V. Vorobyev, J. MacNaughton, Y. Kato, C. H. Wang, Phillip Urquijo, D. Dutta, R. Mussa, P. Pakhlov, Y. Teramoto, S. Uehara, J. Li, A. Ishikawa, M. Ritter, M. Bračko, J. Haba, E. Kato, D. Y. Kim, H. Sahoo, Mikhail Danilov, M. Shapkin, M. Röhrken, K. Chilikin, Z. P. Zhang, C. W. Park, P. Križan, T. A. Shibata, H. Miyata, M. Watanabe, G. Bonvicini, Y. Hoshi, S.I. Eidelman, K. Kinoshita, U. Tamponi, H. Park, A. Bozek, J. Libby, R. Pestotnik, K. Hayasaka, C. Bartel, B. G. Cheon, R. Glattauer, A. Vinokurova, G. B. Mohanty, Andrey Sokolov, V.M. Aulchenko, Yueh-Feng Liu, H. Kichimi, R. Mizuk, K. M. Williams, K. Belous, Kevin Varvell, P. Krokovny, J. H. Kang, M. Nayak, S. Korpar, Y. Watanabe, B.A. Shwartz, K. Cho, Y. Usov, Vladimir Zhulanov, E. Nakano, M. E. Sevior, B. Kronenbitter, W. Ostrowicz, James E. Fast, B. R. Ko, Samo Stanič, C. Van Hulse, Yoshinobu Unno, Y. Yook, T. K. Pedlar, A. Moll, D. Semmler, T. Saito, Peter Kodys, K. Senyo, M. Uchida, V. Chobanova, G. Tatishvili, D. Liventsev, G. S. Varner, R. Itoh, P. Wang, M. N. Wagner, Marko Petrič, H. J. Hyun, D. M. Asner, T. Kawasaki, S. K. Choi, S. Sandilya, A.E. Bondar, Kiyoshi Tanida, A. Bala, Z. Doležal, X. L. Wang, O. Seon, Frank Simon, Y. Sakai, M. Huschle, E. Solovieva, and Z. Q. Liu
Subjects: Physics, Branching fraction, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy, Atomic physics, Absolute branching fractions, Asymmetric energy, Belle detectors, Branching fractions, Data sample, Lambda, Nuclear physics, Baryon, Charmed baryons, KEKB, Pi, High Energy Physics::Experiment, Bar (unit)
Abstract: We present the first model-independent measurement of the absolute branching fraction of the Lambda(+)(c) -> pK(-)pi(+)decay using a data sample of 978 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The number of Lambda(+)(c) baryons is determined by reconstructing the recoiling D(*)(-)(p) over bar pi(+)system in events of the type e(+)e(-) -> D(*)(-)(p) over bar pi(+)Lambda(+)(c). The branching fraction is measured to be B(Lambda(+)(c) -> pK(-)pi(+)) = (6.84 +/- 0.24(-0.27)(+0.21))%, where the first and second uncertainties are statistical and systematic, respectively.
Published: 2014

202. Publisher’s Note: Study ofB0→ρ0ρ0decays, implications for the CKM angleϕ2and search for otherB0decay modes with a four-pion final state [Phys. Rev. D 89, 072008 (2014)]

Author: V.N. Zhilich, L. Li Gioi, H. K. Park, Y. Yamashita, V. M. Aulchenko, O. Seon, Frank Simon, I. Jaegle, K. Miyabayashi, E. Nedelkovska, P.A. Lukin, R. Mizuk, G. Tatishvili, G. B. Mohanty, S. Nishida, M. Shapkin, T. Saito, R. Mussa, M. Röhrken, A. Zupanc, A. M. Bakich, K. Chilikin, Y. J. Kim, Hikaru Kawai, G. Schnell, T. Iijima, E. Nakano, A. Rostomyan, T. Sumiyoshi, Jeremy Dalseno, O. Nitoh, S. Sandilya, Sunmin Ryu, A. Ishikawa, X. L. Wang, Y. F. Liu, H. Farhat, Martin Ritter, Marko Petrič, V. Chekelian, T. Kuhr, M. J. Kim, C. W. Park, H. Sahoo, Y. Teramoto, H. G. Moser, Y. Choi, J. B. Kim, H. J. Hyun, E. Won, H. O. Kim, S. H. Lee, T. Sanuki, T. Hara, L. Santelj, B. Shwartz, M. Starič, R. Pestotnik, L. E. Piilonen, P. Križan, Z. P. Zhang, D. Cinabro, G. Pakhlova, A.L. Sibidanov, N. Gabyshev, T. Higuchi, T. Kumita, Z. Drásal, B. Bhuyan, Y. M. Goh, S. Uehara, M. E. Sevior, P. Chang, P. Vanhoefer, S. Yashchenko, T. E. Browder, U. Tamponi, Y. Sakai, Jung-Hyun Kim, Andrey Sokolov, Y. S. Sohn, T. Julius, R. Gillard, S. E. Vahsen, J. Li, J. Klucar, K. Trabelsi, Po-Hsun Chen, R. Chistov, B. Kronenbitter, C. P. Shen, V. Savinov, E. Kato, J. Libby, Y. Iwasaki, V. V. Zhulanov, James E. Fast, D. M. Asner, Y. J. Kwon, E. Solovieva, W. S. Hou, A. J. Schwartz, S. Eidelman, T. Aushev, T.-A. Shibata, C. H. Wang, Y. Yook, Kevin Varvell, O. Schneider, P. Pakhlov, G. Bonvicini, M. C. Chang, T. Ferber, K. M. Williams, A. Chen, V. Vorobyev, A. Vinokurova, H. Park, A. Bozek, A. Kuzmin, A. Bala, D. Y. Kim, S. Ogawa, H. Aihara, Z. Doležal, Z. Natkaniec, P. Krokovny, C. Liu, C. Kiesling, K. Cho, M. Bračko, Y. Watanabe, T. Tsuboyama, V. Gaur, Y. Unno, I. Adachi, B. G. Cheon, M. Nakao, B. Golob, S. Korpar, N. K. Nisar, V. Bhardwaj, T. K. Pedlar, A. Moll, J. S. Lange, D. Semmler, Yukinori Sato, J. G. Shiu, Byeong Rok Ko, K. Senyo, T. Kawasaki, M. Uchida, T. Iwashita, V. Chobanova, D. Liventsev, M. Z. Wang, K. Kinoshita, G. S. Varner, R. Itoh, P. Wang, M. N. Wagner, H. Hayashii, H. Miyata, Y. Hoshi, K. Hayasaka, Yasuyuki Horii, D. H. Kah, A. Garmash, M. Steder, C. B. Van Hulse, S. Uno, C. Schwanda, and Sanmay Ganguly
Subjects: Physics, Gravitation, Nuclear and High Energy Physics, Theoretical physics, Pion, Web of science, State (functional analysis), Cosmology
Abstract: Reference EPFL-ARTICLE-201317doi:10.1103/PhysRevD.89.119903View record in Web of Science Record created on 2014-08-29, modified on 2017-05-12
Published: 2014

203. Measurement ofD0−D¯0mixing and search for indirectCPviolation usingD0→KS0π+π−decays

Author: A. Zupanc, O. Nitoh, A.E. Bondar, S. Yashchenko, X. H. He, T. Aushev, Hiroaki Aihara, Z. P. Zhang, T. Julius, Marko Petrič, G. Schnell, T. Iijima, A.L. Sibidanov, Z. Doležal, X. L. Wang, C. Z. Yuan, H. J. Hyun, T. Ferber, Yukinori Sato, J. G. Shiu, T. Kuhr, V.E. Shebalin, V.N. Zhilich, J. Dalseno, P. Pakhlov, Y. Sakai, Y. Watanabe, Yongsun Kim, Phillip Urquijo, R. Gillard, M. Ritter, S. Uno, C. Schwanda, D. Cinabro, A. M. Bakich, Z. Natkaniec, R. Seidl, H. Park, D. Červenkov, K. Arinstein, I. Adachi, P. Lukin, B. R. Ko, T. K. Pedlar, Kevin Varvell, Y. Usov, A. Bozek, W. S. Hou, I. Jaegle, K. Miyabayashi, I. S. Cho, D. M. Asner, G. Tatishvili, C. Van Hulse, J. Haba, A. Drutskoy, Z. Q. Liu, E. Nedelkovska, A. Moll, Yang Li, Y. Ushiroda, Y. Iwasaki, A. Abdesselam, T. Kawasaki, S. Korpar, E. Solovieva, O. Schneider, B. Bhuyan, V. Gaur, Jung-Hyun Kim, Yoshinobu Unno, K. M. Williams, L. Li Gioi, A. Garmash, K. Trabelsi, J. B. Kim, C. H. Wang, A. Chen, H. Farhat, M. Nakao, O. Frost, D. Semmler, A.S. Kuzmin, Y. Choi, C. P. Shen, D. A. Epifanov, S. Ogawa, D. Dutta, H. K. Park, M. Uchida, Y. Yamashita, H. Kawai, T. Saito, J. Klucar, V. Vorobyev, Andrey Sokolov, A. Bobrov, H. Kichimi, N. K. Nisar, V.M. Aulchenko, Yueh-Feng Liu, Y. S. Sohn, J. H. Kang, V. Savinov, Z. Drásal, M. J. Kim, V. Chobanova, D. Liventsev, E. Ribežl, G. Bonvicini, T. Hara, L. Santelj, M. Nayak, M. Starič, Peter Kodys, A. J. Schwartz, H. J. Kim, T. Kumita, James E. Fast, P. Katrenko, B.A. Shwartz, Chang Liu, H. Sahoo, A. Vinokurova, G. S. Varner, S. Nishida, Y. Yook, S. Wehle, Y. Teramoto, B. Golob, T. Uglov, Samo Stanič, R. Itoh, Y. M. Goh, T. Sumiyoshi, R. Mussa, A. Rostomyan, Vladimir Zhulanov, P. Krokovny, Sang Hoon Lee, S. Ganguly, M. E. Sevior, P. Wang, Rakesh Kumar, M. N. Wagner, V. Chekelian, A. Ishikawa, Mikhail Danilov, M. Shapkin, B. Kronenbitter, Frank Simon, T. Sanuki, K. Cho, M. Röhrken, Byung Gu Cheon, J. Libby, P. Križan, E. Won, E. Kato, D. Santel, C. C. Zhang, M. Watanabe, T. Iwashita, R. Pestotnik, K. Senyo, P. Vanhoefer, V. Bhardwaj, G. B. Mohanty, R. Ayad, R. Mizuk, S. Uehara, D. Y. Kim, T. A. Shibata, H. Miyata, H. Hayashii, Y. Hoshi, S.I. Eidelman, T. Peng, M. Z. Wang, K. Kinoshita, U. Tamponi, K. Hayasaka, A. Bala, S. Sandilya, and L. E. Piilonen
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 01 natural sciences, law.invention, KEKB, Amplitude, law, 0103 physical sciences, CP violation, 010306 general physics, Collider, Mixing (physics), Bar (unit)
Abstract: We report a measurement of D-0-(D) over bar(0) mixing parameters and a search for indirect CP violation through a time-dependent amplitude analysis of D-0 -> K-S(0)pi(+)pi(-) decays. The results are based on 921 fb(-1) of data accumulated with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Assuming CP conservation, we measure the mixing parameters x = (0.56 +/- 0.19(-0.09-0.09)(+0.03+0.06))% and y = (0.30 +/- 0.15(-0.05-0.06)(+0.04+0.03))%, where the errors are statistical, experimental systematic, and systematic due to the amplitude model, respectively. With CP violation allowed, the parameters vertical bar q/p vertical bar = 0.90(-0.15-0.04-0.05)(+0.16+0.05+0.06) and arg(q/p) = (- 6 +/- 11 +/- 3(-4)(+3))degrees are found to be consistent with conservation of CP symmetry in mixing and in the interference between mixing and decay, respectively.
Published: 2014

204. Measurements of the masses and widths of theΣc(2455)0/++andΣc(2520)0/++baryons

Author: B. R. Ko, Soohyung Lee, T. K. Pedlar, A. Moll, D. Semmler, Sunmin Ryu, E. Won, Yukinori Sato, J. G. Shiu, K. Kinoshita, U. Tamponi, J. Dalseno, T. Iwashita, P. Vanhoefer, A. Frey, V. Bhardwaj, M. Ritter, S. Nishida, A. Rostomyan, Anton Poluektov, Marko Petrič, V.N. Zhilich, Yang Li, Y. Choi, H. J. Hyun, M. Sumihama, Z. Drásal, H. Hayashii, I. Jaegle, K. Miyabayashi, N. K. Nisar, L. Santelj, M. J. Kim, M. Starič, T. Kumita, P. Pakhlov, E. Nedelkovska, Y. M. Goh, D. Matvienko, T. Saito, A. Bozek, H. Farhat, A. Zupanc, B. G. Cheon, B. Golob, D. M. Asner, O. Nitoh, Peter Kodys, O. Seon, G. Schnell, B. Bhuyan, Y. S. Sohn, Bumho Kim, L. Li Gioi, T. E. Browder, X. H. He, A. Drutskoy, S. Korpar, T. A. Shibata, Y. Sakai, G. Bonvicini, J. Klucar, H. Miyata, A. Vinokurova, A. Garmash, Kevin Varvell, K. Trabelsi, Hiroaki Aihara, J. H. Kang, Y. Watanabe, T. Kuhr, V.E. Shebalin, C. Z. Yuan, Y. Hoshi, C. P. Shen, K. M. Williams, T. Aushev, A. Chen, P. Krokovny, K. Cho, T. Mori, T. Sumiyoshi, J. S. Lange, S. Ganguly, Yasushi Nagasaka, Mikhail Danilov, M. Shapkin, E. Solovieva, T. Sanuki, James E. Fast, L. E. Piilonen, G. Pakhlova, Y. Yook, M. Röhrken, Semen Eidelman, A. Abdesselam, V. Gaur, S. Yashchenko, M. Nakao, T. Julius, R. Mussa, R. Chistov, Torben Ferber, A. Ishikawa, R. Pestotnik, P. Križan, S. Uno, C. Schwanda, A.L. Sibidanov, Y. Kato, R. Gillard, S. K. Choi, Kiyoshi Tanida, Z. Doležal, H. Sahoo, T. Uglov, S. Ogawa, C. H. Wang, M. Watanabe, H. K. Park, Y. Yamashita, A. Bala, S. Sandilya, Vikas Bansal, E. Nakano, C. Van Hulse, M. Steder, R. Ayad, S. Uehara, D. Y. Kim, I. Adachi, D. Santel, J. B. Kim, K. Senyo, Toru Iijima, Y. Iwasaki, Y. J. Kwon, O. Schneider, D. Cinabro, Jung-Hyun Kim, D. A. Epifanov, Vladimir Zhulanov, M. E. Sevior, J. Libby, K. Sakai, M. Nayak, S. Okuno, E. Ribežl, M. Uchida, V. Chobanova, D. Liventsev, G. S. Varner, Y. Teramoto, R. Itoh, P. Wang, M. N. Wagner, T. Kawasaki, A. M. Bakich, N. Gabyshev, D. Červenkov, C. Kiesling, T. Peng, and Samo Stanič
Subjects: Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Analytical chemistry, Resonance, 01 natural sciences, Luminosity, Charmed baryons, Baryon, KEKB, Isospin, 0103 physical sciences, 010306 general physics
Abstract: We present measurements of the masses and decay widths of the baryonic states Σc(2455)0/++ and Σc(2520)0/++ using a data sample corresponding to an integrated luminosity of 711fb-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider operating at the (4S) resonance. We report the mass differences with respect to the Λc+ baryon M(Σc(2455)0)-M(Λc+)=167.29±0.01±0.02MeV/c2, M(Σc(2455)++)-M(Λc+)=167.51±0.01±0.02MeV/c2, M(Σc(2520)0)-M(Λc+)=231.98±0.11±0.04MeV/c2, M(Σc(2520)++)-M(Λc+)=231.99±0.10±0.02MeV/c2,and the decay widths Γ(Σc(2455)0)=1.76±0.04-0.21+0.09MeV/c2, Γ(Σc(2455)++)=1.84±0.04-0.20+0.07MeV/c2,Γ(Σ c(2520)0)=15.41±0.41-0.32+0.20MeV/c2,Γ(Σc(2520)++)=14. 77±0.25-0.30+0.18MeV/c2,where the first uncertainties are statistical and the second are systematic. The isospin mass splittings are measured to be M(Σc(2455)++)-M(Σc(2455)0)=0.22±0.01±0.01MeV/c2 and M(Σc(2520)++)-M(Σc(2520)0)=0.01±0.15±0.03MeV/c2. These results are the most precise to date. © 2014 American Physical Society.
Published: 2014

205. Measurements of branching fractions ofτlepton decays with one or moreKS0

Author: B. G. Cheon, G. Schnell, Bumho Kim, E. Nakano, T. Kuhr, V.E. Shebalin, C. Van Hulse, Y. J. Kwon, O. Schneider, A. Garmash, G. Bonvicini, A.S. Kuzmin, T. Aushev, A. Vinokurova, L. E. Piilonen, G. Pakhlova, P. Krokovny, T. Ferber, G. Tatishvili, K. Cho, J. Li, H. Hayashii, P. Pakhlov, I. Adachi, R. Mussa, S. Yashchenko, U. Tamponi, T. Julius, A. Ishikawa, A.L. Sibidanov, J. G. Shiu, J. Dalseno, M. Ritter, M. J. Kim, C. W. Park, P. Križan, O. Seon, Frank Simon, R. Chistov, J. B. Kim, M. Starič, Anze Zupanc, T. A. Shibata, H. Miyata, T. Saito, A. M. Bakich, Y. Hoshi, H. Park, M. Uchida, A. Bozek, Andrey Sokolov, P. Lukin, V. Chobanova, Peter Kodys, Marko Petrič, B. R. Ko, D. Liventsev, T. Sumiyoshi, Sang Hoon Lee, K. Hayasaka, T. Sanuki, T. Mori, James E. Fast, G. S. Varner, D. Matvienko, K. Inami, T. K. Pedlar, A. Moll, N. Gabyshev, D. Červenkov, H. Nakazawa, T. Iwashita, Y. Sakai, D. M. Asner, Y. Yook, C. P. Shen, S. Nishida, Semen Eidelman, Yongsun Kim, A. Bala, S. Uno, C. Schwanda, P. Wang, M. Röhrken, M. N. Wagner, Jung-Hyun Kim, D. Semmler, D. A. Epifanov, K. Chilikin, Yoshinobu Unno, E. Solovieva, M. Nayak, A. Rostomyan, S. Okuno, C. Kiesling, H. Sahoo, Z. P. Zhang, V. Chekelian, M. Bračko, Y. Teramoto, S. Uehara, S. L. Olsen, D. Y. Kim, J. Libby, M. Watanabe, O. Nitoh, Samo Stanič, J. Haba, B. Bhuyan, T. E. Browder, Hiroaki Aihara, B.A. Shwartz, A. Bobrov, C. H. Wang, D. Dutta, H. K. Park, Y. Yamashita, C. Z. Yuan, V. Savinov, Vladimir Zhulanov, S. K. Kim, V.N. Zhilich, Toru Iijima, V. Gaur, M. Nakao, J. MacNaughton, K. Miyabayashi, E. Nedelkovska, H. Farhat, K. T. Kim, V.M. Aulchenko, R. Gillard, S. K. Choi, Y. Watanabe, Y. S. Sohn, R. Mizuk, E. Kato, Sunmin Ryu, Y. Choi, E. Won, A.E. Bondar, N. K. Nisar, L. Santelj, P. Vanhoefer, Y. M. Goh, Z. Doležal, B. Golob, S. Ganguly, W. S. Hou, and V. Vorobyev
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Meson, Branching fraction, Electron–positron annihilation, Pi, Analytical chemistry, Branching (polymer chemistry), Lepton
Abstract: We report measurements of branching fractions of tau lepton decays to final states with a K-S(0) meson using a 669 fb(-1) data sample accumulated with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The inclusive branching fraction is measured to be beta(tau(-) -> (KSX-)-X-0 nu(tau)) = (9.15 +/- 0.01 +/- 0.15) X 10(-3), where X- can be anything; the exclusive branching fractions are beta(tau(-) -> pi(-) K-S(0)nu(tau)) = (4.16 +/- 0.01 +/- 0.08) X 10(-3), beta(tau(-) -> K- K-S(0)nu(tau)) = (7.40 +/- 0.07 +/- 0.27) X 10(-4), beta(tau(-) -> pi(-) K-S(0)pi(0)nu(tau)) = (1.93 +/- 0.02 +/- 0.07) X 10(-3), beta(tau(-) -> K- K-S(0)pi(0)nu(tau)) = (7.48 +/- 0.10 +/- 0.37) X 10(-4), beta(tau(-) -> pi(-) (KSKS0)-K-0 nu(tau)) = (2.33 +/- 0.03 +/- 0.09) X 10(-4), beta(tau(-) -> pi(-) (KSKS0)-K-0 pi(0)nu(tau)) = (2.00 +/- 0.22 +/- 0.20) X 10(-5), where the first uncertainty is statistical and the second is systematic. For each mode, the accuracy is improved over that of pre-B-factory measurements by a factor ranging from five to ten. In tau(-) -> pi(-) (KSKS0)-K-0 pi(0)nu(tau) decays, clear signals for the intermediate states tau(-) -> pi(-) f(1)(1285)nu(tau) and tau(-) -> K*- K-S(0)pi(0)nu(tau) are observed.
Published: 2014

206. Study ofB0→ρ0ρ0decays, implications for the CKM angleϕ2and search for otherB0decay modes with a four-pion final state

Author: K. Chilikin, Oliver D. Schneider, M. Steder, Y. Teramoto, B. Kronenbitter, R. Pestotnik, E. Nedelkovska, Marko Petrič, Doyoun Kim, M. J. Kim, A. Garmash, J. Klucar, J. S. Lange, Y. Sato, V. Zhilich, T. Aushev, T. Kumita, G. Varner, T.-A. Shibata, T. Iwashita, Y. Sakai, M. N. Wagner, M. Shapkin, B. Bhuyan, V. Gaur, T. Kuhr, T. Sanuki, M. Nakao, Y. Yamashita, Y. M. Goh, R. Gillard, H. O. Kim, H. G. Moser, M. Z. Wang, Y. Hoshi, K. Cho, Y. Liu, V. Aulchenko, M. Starič, K. Kinoshita, M. E. Sevior, T. Julius, T. Iijima, Z. Natkaniec, A. Kuzmin, Y. Yook, P. Krokovny, Chuan-Ming Liu, D. M. Asner, E. Solovieva, C. Kiesling, Z. DoleŽal, R. Mizuk, D. Semmler, M. Röhrken, J. Li, H. Farhat, S. Uno, C. Schwanda, N. Gabyshev, V. Chobanova, J. Dalseno, A. Sibidanov, C. P. Shen, H. Sahoo, S. Nishida, V. Savinov, Y. J. Kwon, A. Bala, U. Tamponi, M. C. Chang, P. Lukin, K. Senyo, G. Bonvicini, V. Vorobyev, K. Trabelsi, H. Aihara, J. G. Shiu, Y. Iwasaki, A. Rostomyan, S. Uehara, G. Schnell, T. K. Pedlar, P. Pakhlov, D. Liventsev, Y. Choi, A. Bozek, I. Jaegle, M. Ritter, V. Zhulanov, N. K. Nisar, B. R. Ko, S. Ganguly, T. Higuchi, M. Uchida, P. Vanhoefer, O. Seon, P. KriŽan, G. Pakhlova, Y. Unno, I. Adachi, A. M. Bakich, L. E. Piilonen, A. J. Schwartz, B. Shwartz, T. Ferber, X. L. Wang, Y. Watanabe, R. Itoh, S. Yashchenko, O. Nitoh, Y. J. Kim, R. Mussa, K. Miyabayashi, M. Bračko, T. Tsuboyama, H. Hayashii, G. B. Mohanty, G. Tatishvili, K. E. Varvell, S. Sandilya, P. Chang, T. Sumiyoshi, P. Wang, R. Chistov, S. Ogawa, V. Chekelian, C. B. Van Hulse, Hyun Park, S. Eidelman, S. Ryu, S. Korpar, Hyangkyu Park, J. E. Fast, Simon Lee, T. Saito, L. Li Gioi, E. Kato, B. G. Cheon, V. Bhardwaj, T. Kawasaki, T. Hara, L. Santelj, E. Won, A. Vinokurova, J. H. Kim, A. Moll, Y. S. Sohn, Jangho Kim, D. Cinabro, W. S. Hou, H. J. Hyun, Z. Drásal, F. Simon, S. E. Vahsen, T. E. Browder, Z. P. Zhang, D. H. Kah, Albert C. Chen, E. Nakano, K. M. Williams, A. Ishikawa, B. Golob, C. W. Park, A. Sokolov, H. Kawai, H. Miyata, K. Hayasaka, A. Zupanc, Yasuyuki Horii, P. Chen, Chien Wang, and J. Libby
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Pion, Meson, Branching fraction, Isospin, Pi, Analytical chemistry
Abstract: We present a study of the branching fraction of the decay B-0 -> rho(0)rho(0) and the fraction of longitudinally polarized rho(0) mesons in this decay. The results are obtained from the final data sample containing 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. We find 166 +/- 59 B-0 -> rho(0)rho(0) events (including systematic uncertainties), corresponding to a branching fraction of B(B-0 -> rho(0)rho(0)) = (1.02 +/- 0.30(stat) +/- 0.15(syst)) x 10(-6) with a significance of 3.4 standard deviations and a longitudinal polarization fraction f(L) = 0.21(-0.22)(+0.18()stat) +/- 0.15(syst). We use the longitudinal polarization fraction to determine the Cabibbo-Kobayashi-Maskawa matrix angle phi(2) = (84.9 +/- 13.5)degrees through an isospin analysis in the B ->rho rho system. We furthermore find 125 +/- 41 B-0 -> f(0)rho(0) events, corresponding to B(B-0 -> f(0)rho(0)) x B(f(0) -> pi(+)pi(-)) = (0.78 +/- 0.22(stat) +/- 0.11(syst)) x 10(-6), with a significance of 3.1 standard deviations. We find no other significant contribution with the same final state, and set upper limits at 90% confidence level on the (product) branching fractions, B(B-0 -> pi(+)pi(-)pi(+)pi(-)) rho(0)pi(+)pi(-)) f(0)pi(+)pi(-)) x B(f(0) -> pi(+)pi(-)) f(0)f(0)) x B(f(0) -> pi(+)pi(-))(2) < 0.2 x 10(-6).
Published: 2014

207. Publisher’s Note: Observation ofD0−D¯0Mixing ine+e−Collisions [Phys. Rev. Lett. 112, 111801 (2014)]

Author: J. G. Shiu, E. Nakano, Byeong Rok Ko, R. Seidl, D. Epifanov, Phillip Urquijo, G. Schnell, T. Iijima, C. Liu, G. Tatishvili, Z. Q. Liu, Y. Choi, A. Garmash, T. Hara, L. Santelj, J. Dalseno, Y. Yook, V. Bhardwaj, Y. M. Goh, M. J. Kim, Y. B. Li, A.L. Sibidanov, T. K. Pedlar, T. Iwashita, T. Kawasaki, M. Uchida, V. Chobanova, K. Trabelsi, A. Moll, M. Starič, V. Gaur, T. Kuhr, M. Nakao, D. M. Asner, Dipanwita Dutta, J. Haba, H. Farhat, J. Libby, R. Glattauer, T. Kumita, M. Nayak, M. Shapkin, M. Röhrken, K. Chilikin, Y. J. Kim, A.E. Bondar, J. B. Kim, S. E. Vahsen, G. S. Varner, U. Tamponi, P.A. Lukin, M. Steder, Yasushi Nagasaka, I. S. Cho, L. E. Piilonen, R. Itoh, Z. Doležal, T. Higuchi, W. S. Hou, S. Uehara, M. N. Wagner, Y. Iwasaki, Y. J. Kwon, G. B. Mohanty, A. Rostomyan, P. Wang, K. Arinstein, R. Gillard, Alexei Kuzmin, Y. Sakai, B. G. Cheon, J. B. Singh, G. Pakhlova, S. K. Choi, Y. Watanabe, O. Schneider, Z. P. Zhang, S. Yashchenko, V. M. Aulchenko, D. Cinabro, Marko Petrič, H. J. Hyun, Y. S. Sohn, S. Uno, V. Vorobyev, H. Sahoo, C. Schwanda, V.N. Zhilich, S. H. Lee, I. Adachi, C. H. Wang, T. Julius, H. K. Park, K. Dutta, H. Hayashii, T. Uglov, Y. Yamashita, D. Matvienko, R. Chistov, Jung-Hyun Kim, I. Jaegle, K. Miyabayashi, A. Zupanc, B. Shwartz, E. Nedelkovska, S. Korpar, Z. Drásal, A. Bala, T.-A. Shibata, S. Okuno, B. Golob, M. E. Sevior, O. Seon, Frank Simon, C. B. Van Hulse, Sanmay Ganguly, Z. Natkaniec, N. K. Nisar, A. J. Schwartz, H. Aihara, T. Sumiyoshi, J. S. Lange, O. Nitoh, Y. Usov, J. Li, Y. Teramoto, Martin Ritter, S. Ogawa, T. Sanuki, Peter Kodys, J. E. Fast, D. Červenkov, Sunmin Ryu, X. H. He, C. W. Park, E. Won, M. Z. Wang, S. Eidelman, C. C. Zhang, H. Yamamoto, P. Vanhoefer, A. Bozek, H. Miyata, Y. Hoshi, B. Bhuyan, T. E. Browder, A. Bobrov, C. P. Shen, J. Klucar, A. Chen, T. Aushev, D. Y. Kim, V. Savinov, M. Danilov, T. Ferber, R. Mussa, A. Ishikawa, P. Križan, Samo Stanič, C. Kiesling, T. Peng, M. Bračko, A. Vinokurova, P. Krokovny, Y. Unno, K. Cho, and Andrey Sokolov
Subjects: Physics, Quantum mechanics, General Physics and Astronomy, Mixing (physics)
Published: 2014

208. Observation ofD0−D¯0Mixing ine+e−Collisions

Author: A. J. Schwartz, Peter Kodys, Chang Liu, A.E. Bondar, J. G. Shiu, G. Schnell, T. Iijima, T. Kuhr, Mikhail Danilov, M. Shapkin, J. Dalseno, Y. Sakai, S. Ogawa, Z. P. Zhang, A. Rostomyan, Phillip Urquijo, M. Röhrken, K. Chilikin, G. Tatishvili, P. Lukin, B. R. Ko, H. Hayashii, E. Nakano, M. Ritter, L. E. Piilonen, S. E. Vahsen, V.N. Zhilich, A. Garmash, I. Adachi, R. Mussa, T. Aushev, K. Arinstein, G. Pakhlova, C. C. Zhang, H. Sahoo, C. Van Hulse, I. Jaegle, K. Miyabayashi, A. Ishikawa, T. Uglov, J. B. Kim, Z. Doležal, G. B. Mohanty, E. Nedelkovska, Anze Zupanc, C. W. Park, Z. Drásal, S. Okuno, T. K. Pedlar, Jasvinder A. Singh, T. Kawasaki, M. Uchida, P. Križan, T. Ferber, I. S. Cho, A. Moll, H. Farhat, M. Steder, Marko Petrič, S. Yashchenko, Yasushi Nagasaka, B. Golob, V. Chobanova, J. Li, Yoshinobu Unno, G. S. Varner, O. Nitoh, Y. Iwasaki, Y. S. Sohn, C. H. Wang, H. J. Hyun, Y. J. Kwon, R. Itoh, Takuya Higuchi, D. Dutta, H. K. Park, T. Julius, R. Chistov, P. Wang, Y. Yamashita, M. N. Wagner, D. Matvienko, Yongsun Kim, X. H. He, M. Z. Wang, Andrey Sokolov, Z. Q. Liu, Hiroaki Aihara, Y. Usov, A. Bozek, J. Haba, U. Tamponi, O. Schneider, R. Seidl, D. M. Asner, S. Uno, C. Schwanda, Y. Teramoto, A. Vinokurova, K. Dutta, Samo Stanič, James E. Fast, Byung Gu Cheon, P. Krokovny, T. A. Shibata, H. Miyata, Y. Hoshi, K. Cho, A.S. Kuzmin, B. Bhuyan, A. Chen, Y. Yook, Semen Eidelman, S. Korpar, B.A. Shwartz, T. E. Browder, S. Uehara, D. Cinabro, J. Klucar, Z. Natkaniec, A. Bobrov, R. Gillard, D. Y. Kim, S. K. Choi, V. Savinov, T. Sumiyoshi, V. Gaur, V. Bhardwaj, M. J. Kim, Sang Hoon Lee, T. Sanuki, D. Červenkov, M. Starič, K. Trabelsi, A. Bala, Yang Li, Y. Choi, T. Kumita, N. K. Nisar, T. Hara, L. Santelj, M. E. Sevior, M. Nakao, C. P. Shen, Y. M. Goh, Jung-Hyun Kim, C. Kiesling, A.L. Sibidanov, D. A. Epifanov, T. Peng, M. Bračko, J. S. Lange, S. Ganguly, J. Libby, R. Glattauer, M. Nayak, Sunmin Ryu, E. Won, T. Iwashita, Hitoshi Yamamoto, P. Vanhoefer, W. S. Hou, V. Vorobyev, V.M. Aulchenko, Y. Watanabe, O. Seon, and Frank Simon
Subjects: Nuclear physics, Physics, KEKB, law, Electron–positron annihilation, General Physics and Astronomy, Collider, Measure (mathematics), Mixing (physics), Standard deviation, Bar (unit), Luminosity, law.invention
Abstract: We observe D-0-(D) over bar (0) mixing in the decay D-0 -> K+ pi(-) using a data sample of integrated luminosity 976 fb(-1) collected with the Belle detector at the KEKB e(+) e(-) asymmetric-energy collider. We measure the mixing parameters x'(2) = (0.09 +/- 0.22) x 10(-3) and y' = (4.6 +/- 3.4) x 10(-3) and the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates R-D = (3.53 +/- 0.13) x 10(-3) where the uncertainties are statistical and systematic combined. Our measurement excludes the no-mixing hypothesis at the 5.1 standard deviation level.
Published: 2014

209. Search forB0→pΛ¯π−γat Belle

Author: S. Eidelman, G. Schnell, T. Iijima, A. Bala, T. Kuhr, H. Aihara, M. Uchida, V. Chobanova, H. Park, A. Bozek, T. Saito, A. Drutskoy, A. Frey, P.A. Lukin, A. Vossen, Marko Petrič, D. Matvienko, G. S. Varner, S. Nishida, T. Iwashita, A. M. Bakich, Peter Kodys, Y. Choi, M. N. Wagner, L. Santelj, Yukinori Sato, R. Itoh, A. Rostomyan, P. Wang, S. Sandilya, J. G. Shiu, C. Ng, J. Dalseno, V. Gaur, M. J. Kim, S. Uno, C. Schwanda, J. Libby, T. Sumiyoshi, V. Chekelian, M. Steder, M. Starič, Phillip Urquijo, M. Nakao, T.-A. Shibata, Martin Ritter, Y. M. Goh, T. Kumita, R. Mizuk, T. Sanuki, Byeong Rok Ko, Y. F. Liu, S. E. Vahsen, Y.-T. Lai, M. Nayak, C. P. Shen, B. Shwartz, Y. Iwasaki, B. Golob, T. Aushev, U. Tamponi, Z. P. Zhang, Y. J. Kwon, R. Mussa, D. Santel, Y. Sakai, B. Bhuyan, E. Kato, N. K. Nisar, O. Schneider, Y. Onuki, B. G. Cheon, T. E. Browder, J. Haba, E. Nakano, H. Miyata, Y. Hoshi, T. Ferber, J. S. Lange, J. Klucar, A. Zupanc, A.L. Sibidanov, S. Korpar, K. Senyo, I. S. Cho, V. M. Aulchenko, Sanmay Ganguly, O. Nitoh, H. O. Kim, H. Hayashii, A. Ishikawa, C. B. Van Hulse, T. Kawasaki, E. Solovieva, K. M. Williams, A. Bobrov, L. E. Piilonen, J. Yamaoka, G. Pakhlova, W. S. Hou, Z. Doležal, Y. Teramoto, M. Z. Wang, S. Yashchenko, T. Julius, Po-Hsun Chen, R. Gillard, D. Cinabro, S. K. Choi, P. Chang, Sunmin Ryu, C. W. Park, E. Won, Jung-Hyun Kim, H. Sahoo, P. Vanhoefer, P. Križan, T. Uglov, K. Tanida, Y. B. Hsiung, C. H. Wang, Y. Watanabe, C. Kiesling, J. E. Fast, M. Bračko, J. H. Kang, S. Ogawa, V. V. Zhulanov, Y. Yamashita, Samo Stanič, V.N. Zhilich, I. Jaegle, H. Farhat, Y. S. Sohn, H. Nakazawa, T. K. Pedlar, A. Moll, D. Semmler, A. Chen, M. Shapkin, P. Krokovny, M. Röhrken, Y. J. Kim, K. Cho, H. Ozaki, S. H. Lee, R. Pestotnik, J. Li, S. Uehara, I. Adachi, Y. Unno, and D. M. Asner
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, 01 natural sciences
Published: 2014

210. Observation of D0-D0 mixing in e+e- collisions

Author: B R, Ko, E, Won, I, Adachi, H, Aihara, K, Arinstein, D M, Asner, V, Aulchenko, T, Aushev, A, Bala, V, Bhardwaj, B, Bhuyan, A, Bobrov, A, Bondar, A, Bozek, M, Bračko, T E, Browder, D, Cervenkov, A, Chen, B G, Cheon, K, Chilikin, R, Chistov, I-S, Cho, K, Cho, V, Chobanova, S-K, Choi, Y, Choi, D, Cinabro, J, Dalseno, M, Danilov, Z, Doležal, Z, Drásal, D, Dutta, K, Dutta, S, Eidelman, D, Epifanov, H, Farhat, J E, Fast, T, Ferber, V, Gaur, S, Ganguly, A, Garmash, R, Gillard, R, Glattauer, Y M, Goh, B, Golob, J, Haba, T, Hara, H, Hayashii, X H, He, T, Higuchi, Y, Hoshi, W-S, Hou, H J, Hyun, T, Iijima, A, Ishikawa, R, Itoh, Y, Iwasaki, T, Iwashita, I, Jaegle, T, Julius, T, Kawasaki, C, Kiesling, D Y, Kim, J B, Kim, J H, Kim, M J, Kim, Y J, Kim, J, Klucar, P, Kodyš, S, Korpar, P, Križan, P, Krokovny, T, Kuhr, T, Kumita, A, Kuzmin, Y-J, Kwon, J S, Lange, S-H, Lee, J, Li, Y, Li, J, Libby, C, Liu, Z Q, Liu, P, Lukin, D, Matvienko, K, Miyabayashi, H, Miyata, G B, Mohanty, A, Moll, R, Mussa, Y, Nagasaka, E, Nakano, M, Nakao, Z, Natkaniec, M, Nayak, E, Nedelkovska, N K, Nisar, O, Nitoh, S, Ogawa, S, Okuno, G, Pakhlova, C W, Park, H K, Park, T K, Pedlar, T, Peng, M, Petrič, L E, Piilonen, M, Ritter, M, Röhrken, A, Rostomyan, S, Ryu, H, Sahoo, Y, Sakai, L, Santelj, T, Sanuki, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, A J, Schwartz, R, Seidl, O, Seon, M E, Sevior, M, Shapkin, C P, Shen, T-A, Shibata, J-G, Shiu, B, Shwartz, A, Sibidanov, F, Simon, J B, Singh, Y-S, Sohn, A, Sokolov, S, Stanič, M, Starič, M, Steder, T, Sumiyoshi, U, Tamponi, G, Tatishvili, Y, Teramoto, K, Trabelsi, M, Uchida, S, Uehara, T, Uglov, Y, Unno, S, Uno, P, Urquijo, Y, Usov, S E, Vahsen, C, Van Hulse, P, Vanhoefer, G, Varner, A, Vinokurova, V, Vorobyev, M N, Wagner, C H, Wang, M-Z, Wang, P, Wang, Y, Watanabe, H, Yamamoto, Y, Yamashita, S, Yashchenko, Y, Yook, C C, Zhang, Z P, Zhang, V, Zhilich, and A, Zupanc
Abstract: We observe D(0)-D(0) mixing in the decay D(0) → K+π- using a data sample of integrated luminosity 976 fb(-1) collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. We measure the mixing parameters x'(2) = (0.09 ± 0.22) × 10(-3) and y'=(4.6 ± 3.4) × 10(-3) and the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates R(D) = (3.53 ± 0.13) × 10(-3), where the uncertainties are statistical and systematic combined. Our measurement excludes the no-mixing hypothesis at the 5.1 standard deviation level.
Published: 2014

211. Evidence for semileptonicB−→pp¯ℓ−ν¯ℓdecays

Author: Yukinori Sato, J. G. Shiu, P. Lukin, B. R. Ko, T. Saito, J. Dalseno, K. Miyabayashi, Phillip Urquijo, M. Ritter, E. Nedelkovska, Z. Drásal, T. Aushev, S. E. Vahsen, Peter Kodys, T. K. Pedlar, A. Moll, Marko Petrič, H. J. Hyun, Kiyoshi Tanida, R. Mussa, Z. Doležal, E. Kato, A. Ishikawa, D. Semmler, T. Ferber, R. Gillard, J. Li, S. Nishida, O. Seon, Y. Iwasaki, C. W. Park, C. Oswald, Y. J. Kwon, Y. Watanabe, P. Križan, T. Kawasaki, K. J. Tien, J. Yamaoka, S. Okuno, H. J. Kim, A. Rostomyan, O. Schneider, A. M. Bakich, J. Haba, Z. Natkaniec, M. Uchida, B. G. Cheon, Y. Sakai, G. Schnell, T. Iijima, Chang Liu, V. Chekelian, Yang Li, Y. Choi, D. M. Asner, Y. Teramoto, V. Chobanova, D. Liventsev, A.S. Kuzmin, N. K. Nisar, L. Santelj, Mikhail Danilov, M. Shapkin, Yongsun Kim, A. Vinokurova, P. Krokovny, G. Tatishvili, T. Kuhr, S. Uno, D. Cinabro, K. Cho, C. Schwanda, G. S. Varner, E. Nakano, Vladimir Zhulanov, B. Bhuyan, E. Won, M. E. Sevior, M. Röhrken, K. Chilikin, H. Hayashii, H. Farhat, C. Ng, R. Itoh, T. E. Browder, P. Chang, B. Kronenbitter, Y. M. Goh, P. Vanhoefer, Kevin Varvell, M. Steder, W. Ostrowicz, J. Klucar, P. Wang, C. Van Hulse, Andrey Sokolov, C. P. Shen, Jung-Hyun Kim, M. Watanabe, G. B. Mohanty, W. S. Hou, M. Z. Wang, J. H. Kang, A.L. Sibidanov, Y. S. Sohn, H. K. Park, Anze Zupanc, V. Savinov, S. Uehara, V. Vorobyev, R. Pestotnik, H. Kichimi, J. Libby, D. Y. Kim, T. Sumiyoshi, M. Starič, T. Kumita, James E. Fast, Y. Yamashita, M. Nayak, Sang Hoon Lee, I. Adachi, B. Golob, T. Sanuki, Yoshinobu Unno, L. E. Piilonen, J. B. Kim, S. Ganguly, K. M. Williams, Z. P. Zhang, A. Chen, O. Nitoh, H. Park, A. Bozek, S. Yashchenko, T. Julius, Samo Stanič, Po-Hsun Chen, R. Chistov, M. Huschle, Hiroaki Aihara, I. S. Cho, D. Santel, C. Kiesling, K. Senyo, V. Gaur, M. Nakao, M. Bračko, C. H. Wang, D. Dutta, S. Korpar, V.M. Aulchenko, Yueh-Feng Liu, M. Sumihama, M. N. Wagner, A. Bala, S. Ogawa, H. Sahoo, T. Uglov, S. Sandilya, S. L. Olsen, D. H. Kah, Y. B. Hsiung, T. A. Shibata, H. Miyata, Y. Hoshi, S.I. Eidelman, Yasuyuki Horii, and V.N. Zhilich
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, 01 natural sciences, Baryon, Nuclear physics, KEKB, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: We find evidence for the semileptonic baryonic decay B- -> p (p) over barl(-)(nu) over bar (l) (l = e, mu), based on a data sample of 772 million B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy electron-positron collider. A neural-network based hadronic B-meson tagging method is used in this study. The branching fraction of B- -> p (p) over barl(-)(nu) over bar (l) is measured to be (5.8(-2.1)(+2.4)(stat) +/- 0.9(syst)) x 10(-6) with a significance of 3.2 sigma s, where lepton universality is assumed. We also estimate the corresponding upper limit: B(B- -> p (p) over barl(-)(nu) over bar (l)) < 9.6 x 10(-6) at the 90% confidence level. This measurement helps constrain the baryonic transition form factor in B decays.
Published: 2014

212. Measurement of the $\tau$-lepton lifetime at Belle

Author: James E. Fast, M. J. Kim, Y. Yook, Semen Eidelman, W. S. Hou, V. Gaur, H. K. Park, H. Hayashii, T. E. Browder, Marko Petrič, J. G. Shiu, S. E. Vahsen, K. M. Williams, A. Chen, E. Kato, B. G. Cheon, D. Matvienko, J. Dalseno, D. M. Asner, H. Sahoo, A. Bozek, G. Tatishvili, M. Ritter, S. Okuno, K. Inami, H. Farhat, O. Schneider, G. Schnell, Y. Teramoto, A. Zupanc, Kevin Varvell, T. Iwashita, V. Zhilich, M. Röhrken, K. Chilikin, B. Golob, B.A. Shwartz, T. Uglov, A.S. Kuzmin, R. Pestotnik, R. Mussa, N. K. Nisar, T. Hara, M. Bračko, S. Nishida, L. Santelj, Y. Watanabe, A.L. Sibidanov, T. Mori, Y. Usov, K. Kinoshita, U. Tamponi, A. Ishikawa, M. Nakao, O. Nitoh, T. Ferber, C. W. Park, P. Križan, A.E. Bondar, T. Kuhr, M. Starič, Y. M. Goh, Y. S. Sohn, S. Uehara, G. Varner, A. Rostomyan, A. Bala, Z. P. Zhang, Y. Hoshi, G. B. Mohanty, C. Kiesling, R. Mizuk, J. Yamaoka, V. Chekelian, Hiroaki Aihara, D. Y. Kim, M. Watanabe, I. Jaegle, Y. Choi, Z. Doležal, G. Bonvicini, J. S. Lange, S. Ganguly, A. Vinokurova, Yoshinobu Unno, E. Nedelkovska, S. Ogawa, C. Z. Yuan, M. Uchida, T. Sumiyoshi, K. Belous, S. Korpar, T. Saito, V. Chobanova, V.E. Shebalin, P. Krokovny, D. Liventsev, B. Bhuyan, W. Ostrowicz, Peter Kodys, K. Cho, D. Cinabro, Leo Piilonen, A. Bobrov, P. Lukin, B. R. Ko, H. J. Kim, D. Dutta, V. Savinov, E. Won, O. Seon, Frank Simon, R. Itoh, Toru Iijima, Yongsun Kim, D. Červenkov, V. Vorobyev, T. Sanuki, A. Garmash, T. K. Pedlar, C. H. Wang, S. Uno, K. Trabelsi, P. Wang, C. Schwanda, S. H. Lee, M. N. Wagner, C. P. Shen, I. Adachi, D. Santel, G. Pakhlova, D. Semmler, R. Gillard, C. Ng, K. Senyo, H. Park, J. Haba, Sunmin Ryu, M. Steder, J. B. Kim, A. M. Bakich, Y. Yamashita, Y. Sakai, Yasushi Nagasaka, V.M. Aulchenko, Samo Stanič, Y. J. Kwon, P. Vanhoefer, D. A. Epifanov, S. Sandilya, H. Kichimi, T. Tsuboyama, M. Nayak, S. Yashchenko, J. Libby, E. Nakano, T. Julius, R. Chistov, C. Van Hulse, M. Shapkin, S. L. Olsen, T. A. Shibata, H. Miyata, K. Hayasaka, and Andrey Sokolov
Subjects: Particle physics, +3pi+neutrino%2Ftau%22">tau --> 3pi neutrino/tau, Electron–positron annihilation, article, elementary particle, methodology, nuclear physics, quantum theory, theoretical model, Elementary Particles, Models, Theoretical, Nuclear Physics, Quantum Theory, General Physics and Astronomy, Elementary particle, BELLE, annihilation [electron positron], Resonance (particle physics), High Energy Physics - Experiment, Nuclear physics, KEK-B, +tau%2B+tau%22">electron positron --> tau+ tau, ddc:550, Physics, lifetime, difference [lifetime], High Energy Physics::Phenomenology, semileptonic decay [tau], pair production [tau], High Energy Physics::Experiment, approx. 10.58 GeV-cms, Lepton, experimental results
Abstract: The lifetime of the $\tau$-lepton is measured using the process $e^+e^-\rightarrow\tau^+\tau^-$, where both $\tau$-leptons decay to $3\pi\nu_\tau$. The result for the mean lifetime, based on $711\,\mathrm{fb}^{-1}$ of data collected with the Belle detector at the $\Upsilon(4S)$ resonance and $60\,\mathrm{MeV}$ below, is $\tau = (290.17 \pm 0.53(\mathrm{stat.}) \pm 0.33(\mathrm{syst.}))\cdot10^{-15}\,\mathrm{s}$. The first measurement of the lifetime difference between $\tau^+$ and $\tau^-$ is performed. The upper limit on the relative lifetime difference between positive and negative $\tau$-leptons is $|\Delta\tau| / \tau < 7.0 \times 10^{-3}$ at 90% CL., Comment: 17 pages, 4 figures. Submitted to Phys. Rev. Lett
Published: 2014

213. DOES DLCQ S-MATRIX HAVE A COVARIANT CONTINUUM LIMIT?

Author: Satoshi Yamada, S. Uehara, Masa-aki Taniguchi, and Koichi Yamawaki
Subjects: High Energy Physics - Theory, Physics, Nuclear and High Energy Physics, Zero mode, Nuclear Theory, Continuum (measurement), FOS: Physical sciences, General Physics and Astronomy, Astronomy and Astrophysics, String theory, Nuclear Theory (nucl-th), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics - Theory (hep-th), Covariant transformation, Nuclear theory, S-matrix, Mathematical physics
Abstract: We develop a systematic DLCQ perturbation theory and show that DLCQ S-matrix does not have a covariant continuum limit for processes with $p^+=0$ exchange. This implies that the role of the zero mode is more subtle than ever considered in DLCQ and hence must be treated with great care also in non-perturbative approach. We also make a brief comment on DLCQ in string theory., 4 pages, 2 figures
Published: 2001

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

Author: K Abe, R Abe, I Adachi, B.S Ahn, H Aihara, M Akatsu, Y Asano, T Aso, V Aulchenko, A.M Bakich, E Banas, S Behari, P.K Behera, D Beiline, A Bondar, A Bozek, T.E Browder, B.C.K Casey, P Chang, Y Chao, B.G Cheon, R Chistov, S.-K Choi, Y Choi, L.Y Dong, J Dragic, S Eidelman, Y Enari, F Fang, H Fujii, C Fukunaga, M Fukushima, N Gabyshev, A Garmash, T Gershon, A Gordon, K Gotow, R Guo, J Haba, H Hamasaki, K Hara, T Hara, N.C Hastings, H Hayashii, M Hazumi, E.M Heenan, I Higuchi, T Higuchi, H Hirano, T Hojo, Y Hoshi, K Hoshina, S.R Hou, W.-S Hou, S.-C Hsu, H.-C Huang, Y Igarashi, T Iijima, H Ikeda, K Inami, A Ishikawa, H Ishino, R Itoh, G Iwai, H Iwasaki, Y Iwasaki, D.J Jackson, P Jalocha, H.K Jang, J Kaneko, J.H Kang, J.S Kang, N Katayama, H Kawai, N Kawamura, T Kawasaki, H Kichimi, D.W Kim, Heejong Kim, H.J Kim, Hyunwoo Kim, S.K Kim, T.H Kim, K Kinoshita, S Kobayashi, H Konishi, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, Y.-J Kwon, J.S Lange, G Leder, S.H Lee, D Liventsev, R.-S Lu, T Matsubara, S Matsumoto, T Matsumoto, J MacNaughton, Y Mikami, K Miyabayashi, H Miyake, H Miyata, G.R Moloney, S Mori, T Mori, A Murakami, T Nagamine, Y Nagasaka, Y Nagashima, T Nakadaira, E Nakano, M Nakao, J.W Nam, S Narita, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, H Ozaki, P Pakhlov, H Palka, C.S Park, C.W Park, H Park, L.S Peak, M Peters, L.E Piilonen, E Prebys, J.L Rodriguez, N Root, M Rozanska, K Rybicki, H Sagawa, Y Sakai, H Sakamoto, M Satapathy, A Satpathy, S Semenov, K Senyo, M.E Sevior, H Shibuya, B Shwartz, S Stanič, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, S.Y Suzuki, S.K Swain, T Takahashi, M Takita, K Tamai, N Tamura, J Tanaka, M Tanaka, Y Tanaka, Y Teramoto, M Tomoto, T Tomura, S.N Tovey, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, K.E Varvell, C.C Wang, C.H Wang, J.G Wang, M.-Z Wang, Y Watanabe, E Won, B.D Yabsley, Y Yamada, M Yamaga, A Yamaguchi, Y Yamashita, M Yamauchi, S Yanaka, J Yashima, K Yoshida, Y Yusa, H Yuta, C.C Zhang, J Zhang, H.W Zhao, Y Zheng, V Zhilich, and D Žontar
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, Meson, Branching fraction, Pi, High Energy Physics::Experiment, Nuclear Experiment, Confidence interval
Abstract: We report measurements for two-body charmless B decays with an eta' meson in the final state. Using 11.1X10^6 BBbar pairs collected with the Belle detector, we find BF(B^+ ->eta'K^+)=(79^+12_-11 +-9)x10^-6 and BF(B^0 -> eta'K^0)=(55^+19_-16 +-8)x10^-6, where the first and second errors are statistical and systematic, respectively. No signal is observed in the mode B^+ -> eta' pi^+, and we set a 90% confidence level upper limit of BF(B^+-> eta'pi^+) eta'K^+- decays is investigated and a limit at 90% confidence level of -0.20
Published: 2001
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215. A measurement of the branching fraction for the inclusive B→Xγ decays with the Belle detector

Author: K. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, G. Alimonti, K. Aoki, K. Asai, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A.M. Bakich, E. Banas, W. Bartel, S. Behari, P.K. Behera, D. Beiline, A. Bondar, A. Bozek, T.E. Browder, B.C.K. Casey, P. Chang, Y. Chao, B.G. Cheon, S.-K. Choi, Y. Choi, Y. Doi, J. Dragic, A. Drutskoy, S. Eidelman, Y. Enari, R. Enomoto, F. Fang, H. Fujii, C. Fukunaga, M. Fukushima, A. Garmash, A. Gordon, K. Gotow, H. Guler, R. Guo, J. Haba, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, T. Haruyama, N.C. Hastings, K. Hayashi, H. Hayashii, M. Hazumi, E.M. Heenan, Y. Higasino, I. Higuchi, T. Higuchi, H. Hirano, T. Hojo, Y. Hoshi, W.-S. Hou, S.-C. Hsu, H.-C. Huang, S. Ichizawa, Y. Igarashi, T. Iijima, H. Ikeda, K. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, G. Iwai, H. Iwasaki, Y. Iwasaki, D.J. Jackson, P. Jalocha, H.K. Jang, M. Jones, R. Kagan, H. Kakuno, J. Kaneko, J.H. Kang, J.S. Kang, P. Kapusta, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D.W. Kim, Heejong Kim, H.J. Kim, Hyunwoo Kim, S.K. Kim, K. Kinoshita, K. Korotushenko, P. Krokovny, R. Kulasiri, S. Kumar, T. Kuniya, E. Kurihara, A. Kuzmin, Y.-J. Kwon, J.S. Lange, M.H. Lee, S.H. Lee, H.B. Li, D. Liventsev, R.-S. Lu, A. Manabe, T. Matsubara, S. Matsui, S. Matsumoto, T. Matsumoto, Y. Mikami, K. Misono, K. Miyabayashi, H. Miyake, H. Miyata, L.C. Moffitt, G.R. Moloney, G.F. Moorhead, S. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, E. Nakano, M. Nakao, J.W. Nam, S. Narita, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, Y. Ohshima, T. Okabe, T. Okazaki, S. Okuno, S.L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C.S. Park, C.W. Park, H. Park, L.S. Peak, M. Peters, L.E. Piilonen, E. Prebys, J.L. Rodriguez, N. Root, M. Rozanska, K. Rybicki, J. Ryuko, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, S. Schrenk, S. Semenov, K. Senyo, M.E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J.B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S.Y. Suzuki, S.K. Swain, H. Tajima, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, Y. Tanaka, G.N. Taylor, Y. Teramoto, M. Tomoto, T. Tomura, S.N. Tovey, K. Trabelsi, T. Tsuboyama, Y. Tsujita, T. Tsukamoto, S. Uehara, K. Ueno, N. Ujiie, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, S.E. Vahsen, G. Varner, K.E. Varvell, C.C. Wang, C.H. Wang, M.-Z. Wang, T.J. Wang, Y. Watanabe, E. Won, B.D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamamoto, H. Yamaoka, Y. Yamaoka, Y. Yamashita, M. Yamauchi, S. Yanaka, M. Yokoyama, K. Yoshida, Y. Yusa, H. Yuta, C.C. Zhang, J. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Branching fraction, Detector, Radiative transfer, Resonance, B meson, Storage ring, High Energy Physics - Experiment
Abstract: We have measured the branching fraction of the inclusive radiative B meson decay B --> X(s) gamma to be Br(B->X(s)gamma)=(3.36 +/- 0.53(stat) +/- 0.42(sys) +0.50-0.54(th)) x 10^{-4}. The result is based on a sample of 6.07 x 10^6 BBbar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e^+e^- storage ring., Comment: 14 pages, 6 Postsript figures, uses elsart.cls
Published: 2001

216. 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

217. Measurement of theCPViolation Parametersin2φ1inBd0Meson Decays

Author: A. Abashian, 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, A. Drutskoy, S. Eidelman, Y. Enari, R. Enomoto, C. W. Everton, F. Fang, H. Fujii, K. Fujimoto, 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, T. Haruyama, N. C. Hastings, K. Hayashi, H. Hayashii, M. Hazumi, E. M. Heenan, Y. Higashi, Y. Higashino, I. Higuchi, T. Higuchi, T. Hirai, H. Hirano, M. Hirose, T. Hojo, Y. Hoshi, K. Hoshina, 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, M. Iwai, M. Iwamoto, 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, Y. Kondo, 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, Y. Mikami, K. Misono, K. Miyabayashi, H. Miyake, H. Miyata, L. C. Moffitt, A. Mohapatra, G. R. Moloney, G. F. Moorhead, N. Morgan, S. Mori, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, T. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, S. Narita, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, Y. Ohshima, T. Okabe, T. Okazaki, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. S. Park, C. W. Park, H. Park, L. S. Peak, M. Peters, L. E. Piilonen, E. Prebys, J. L. Rodriguez, N. Root, M. Rozanska, K. Rybicki, J. Ryuko, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, H. Sakaue, M. Satapathy, N. Sato, A. Satpathy, S. Schrenk, S. Semenov, Y. Settai, M. E. Sevior, H. Shibuya, B. Shwartz, A. Sidorov, V. Sidorov, J. B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, J. Suzuki, J.-I. Suzuki, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, H. Tajima, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, 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. Yamamoto, T. Yamanaka, H. Yamaoka, Y. Yamaoka, Y. Yamashita, M. Yamauchi, S. Yanaka, M. Yokoyama, K. Yoshida, Y. Yusa, H. Yuta, C. C. Zhang, H. W. Zhao, J. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, Electron–positron annihilation, General Physics and Astronomy, Resonance, CP violation, High Energy Physics::Experiment, Standard Model
Abstract: We present a measurement of the standard model $\mathrm{CP}$ violation parameter $\mathrm{sin}2{\ensuremath{\varphi}}_{1}$ (also known as $\mathrm{sin}2\ensuremath{\beta}$) based on a $10.5{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric ${e}^{+}{e}^{\ensuremath{-}}$ collider. One neutral $B$ meson is reconstructed in the $J/\ensuremath{\psi}{K}_{S}$, $\ensuremath{\psi}(2S){K}_{S}$, ${\ensuremath{\chi}}_{c1}{K}_{S}$, ${\ensuremath{\eta}}_{c}{K}_{S}$, $J/\ensuremath{\psi}{K}_{L}$, or $J/\ensuremath{\psi}{\ensuremath{\pi}}^{0}$ $\mathrm{CP}$-eigenstate decay channel and the flavor of the accompanying $B$ meson is identified from its charged particle decay products. From the asymmetry in the distribution of the time interval between the two $B$-meson decay points, we determine $\mathrm{sin}2{\ensuremath{\varphi}}_{1}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.58}_{\ensuremath{-}0.34}^{+0.32}(\mathrm{stat}{)}_{\ensuremath{-}0.10}^{+0.09}(\mathrm{syst})$.
Published: 2001

218. Search of J/ψ production in the two-photon process at TRISTAN

Author: Y. Takada, Y. Chiba, Masami Chiba, Taro Ohama, Yoshiyuki Watase, Koji Abe, E. K. Matsuda, Motomasa Daigo, N. Tamura, T. Watanabe, Yasushige Yonezawa, T. Matsui, M. Sato, Y. Asano, Hiroshi Sakamoto, Nobuhiro Ishihara, T. Kondo, Y. Nagashima, H. Yoshida, Makoto Sakuda, Y. Nakagawa, Mineo Fukawa, Masato Higuchi, M. Takita, Itsuo Nakano, J. Haba, Ryusaburo Kikuchi, H. Hamasaki, H. Ohyama, K. Ogawa, Nobuaki Sato, M. Shioden, T. Ohsugi, Yasutaka Fukushima, Shigeki Mori, D. Tatsumi, F. Yabuki, K. Amako, K. Tobimatsu, T. Sumiyoshi, Junichi Kanzaki, Hisaya Kurashige, Y. Yamada, Yasuo Hemmi, S. Uehara, Teruo Nakamura, Y. Iwata, T. T. Korhonen, Toru Tsuboyama, Kozo Miyake, Shigeru Odaka, Yasuhiro Homma, Tachishige Hirose, J. Shirai, K. Okabe, Fumihiko Takasaki, A. Okamoto, A. Ono, J. Pennanen, T. Yamagata, Yoshinobu Unno, Y. Arai, and K. Yusa
Subjects: Physics, Nuclear and High Energy Physics, biology, 010308 nuclear & particles physics, Detector, Venus, biology.organism_classification, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics, Collider
Abstract: An experimental study was carried out for J/ψ production in a two-photon process using the VENUS detector at the TRISTAN e+e− collider. The study was based on 357 pb−1 data at an average e+e− center-of-mass energy of 58 GeV. No significant signal was observed, and the upper limit of the production cross section was obtained.
Published: 2001

219. Understanding the dynamics of illness and help-seeking: event-structure analysis and a Cambodian–American narrative of 'Spirit Invasion'

Author: Edwina S. Uehara
Subjects: Family Health, Male, Class (computer programming), Health (social science), Mental Disorders, common, Refugee, Culture, common.demographic_type, Gender studies, Patient Acceptance of Health Care, United States, Help-seeking, Event structure, History and Philosophy of Science, Dynamics (music), Humans, Female, Narrative, Cambodian American, Espiritismo, Cambodia, Psychology, Anthropology, Cultural, Cognitive psychology
Abstract: Event structure analysis (ESA) and its computer analog, ETHNO, represent a class of relatively new methodological approaches that make it possible to capture the complexity of help-seeking interactions. Using narrative data from a study of Cambodian–American help-seeking interactions within a circumscribed illness episode, this paper demonstrates the feasibility of using ESA/ETHNO to illuminate how event sequence, operant illness beliefs, structural conditions, and human agency interpenetrate and shape the occurrence and timing of pivotal actions and the denouement of a help-seeking episode.
Published: 2001

220. [Untitled]

Author: Edwina S. Uehara, Anthony Ishisaka, Paula T. Morelli, and Martha Farris
Subjects: Health (social science), Psychoanalysis, Injury control, business.industry, Accident prevention, Poison control, General Medicine, Psychiatry and Mental health, Arts and Humanities (miscellaneous), Anthropology, Medicine, Narrative, business, Internal logic
Abstract: If “narrative” implies a form of discourse in which sequencedevents are meaningfully connected, an “anti-narrative” is achaotic discourse form “of time without sequence, telling withoutmediation, and speaking about oneself without being fully able toreflect on oneself” (Frank 1995: 98). This paper examinesnarratives and anti-narratives in the oral discourses ofsurvivors of the Cambodian killing fields. Through an extendedanalysis of two cases, we demonstrate the internal logic and “eloquence” of anti-narratives – i.e., the ways in whichanti-narrative patterns vividly express and reveal a survivor'scomplex and continuing experience of atrocity.
Published: 2001

221. Measurement of the branching fraction B(Λc+ → pK-π+)

Author: A, Zupanc, C, Bartel, N, Gabyshev, I, Adachi, H, Aihara, D M, Asner, V, Aulchenko, T, Aushev, A M, Bakich, A, Bala, K, Belous, B, Bhuyan, A, Bondar, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, M-C, Chang, V, Chekelian, B G, Cheon, K, Chilikin, R, Chistov, I-S, Cho, K, Cho, V, Chobanova, S-K, Choi, Y, Choi, D, Cinabro, J, Dalseno, M, Danilov, Z, Doležal, Z, Drásal, D, Dutta, K, Dutta, S, Eidelman, D, Epifanov, H, Farhat, J E, Fast, M, Feindt, T, Ferber, V, Gaur, S, Ganguly, A, Garmash, R, Gillard, R, Glattauer, Y M, Goh, B, Golob, J, Haba, K, Hayasaka, H, Hayashii, X H, He, Y, Hoshi, W-S, Hou, M, Huschle, H J, Hyun, T, Iijima, A, Ishikawa, R, Itoh, Y, Iwasaki, T, Iwashita, I, Jaegle, T, Julius, J H, Kang, E, Kato, Y, Kato, T, Kawasaki, H, Kichimi, D Y, Kim, H J, Kim, J B, Kim, J H, Kim, M J, Kim, Y J, Kim, K, Kinoshita, J, Klucar, B R, Ko, P, Kodyš, S, Korpar, P, Križan, P, Krokovny, B, Kronenbitter, T, Kuhr, T, Kumita, A, Kuzmin, Y-J, Kwon, S-H, Lee, J, Li, Y, Li, J, Libby, C, Liu, Y, Liu, Z Q, Liu, D, Liventsev, J, MacNaughton, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, A, Moll, R, Mussa, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, M, Nayak, E, Nedelkovska, M, Niiyama, N K, Nisar, S, Nishida, O, Nitoh, S, Ogawa, S L, Olsen, W, Ostrowicz, P, Pakhlov, G, Pakhlova, C W, Park, H, Park, H K, Park, T K, Pedlar, R, Pestotnik, M, Petrič, L E, Piilonen, M, Ritter, M, Röhrken, A, Rostomyan, S, Ryu, H, Sahoo, T, Saito, Y, Sakai, S, Sandilya, L, Santelj, T, Sanuki, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, D, Semmler, K, Senyo, O, Seon, M E, Sevior, M, Shapkin, C P, Shen, T-A, Shibata, J-G, Shiu, B, Shwartz, A, Sibidanov, F, Simon, Y-S, Sohn, A, Sokolov, E, Solovieva, S, Stanič, M, Starič, M, Steder, T, Sumiyoshi, U, Tamponi, K, Tanida, G, Tatishvili, Y, Teramoto, K, Trabelsi, M, Uchida, S, Uehara, Y, Unno, S, Uno, P, Urquijo, Y, Usov, C, Van Hulse, P, Vanhoefer, G, Varner, K E, Varvell, A, Vinokurova, V, Vorobyev, M N, Wagner, C H, Wang, P, Wang, X L, Wang, M, Watanabe, Y, Watanabe, K M, Williams, E, Won, H, Yamamoto, Y, Yamashita, S, Yashchenko, Y, Yook, Z P, Zhang, V, Zhilich, and V, Zhulanov
Abstract: We present the first model-independent measurement of the absolute branching fraction of the Λ(c)(+) → pK(-)π(+) decay using a data sample of 978 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The number of Λ(c)(+) baryons is determined by reconstructing the recoiling D((*)-) pπ(+) system in events of the type e(+)e(-) → D((*)-) pπ(+)Λ(c)(+). The branching fraction is measured to be B(Λ(c)(+) → pK(-)π(+)) = (6.84 ± 0.24(-0.27)(+0.21))%, where the first and second uncertainties are statistical and systematic, respectively.
Published: 2013

222. On the DLCQ as a light-like limit in string theory

Author: Satoshi Yamada and S. Uehara
Subjects: High Energy Physics - Theory, Physics, Nuclear and High Energy Physics, Bosonic string theory, FOS: Physical sciences, Supersymmetry, String theory, String (physics), Scattering amplitude, High Energy Physics::Theory, Quantization (physics), Theoretical physics, Amplitude, High Energy Physics - Theory (hep-th), Limit (mathematics)
Abstract: We study the issue of defining the discrete light-cone quantization (DLCQ) in perturbative string theory as a light-like limit. While this limit is unproblematic at the classical level, it is non-trivial at the quantum level due to the divergences by the zero-mode loops. We reconsider this problem in bosonic string theory. We construct the multi-loop scattering amplitudes in both open and closed string theories by using the method of Kikkawa, Sakita and Virasoro (KSV), and then we show that these scattering amplitudes are perfectly well-defined in this limit. We also discuss the vacuum amplitudes of the string theory. They are, however, ill-defined in the light-like limit due to the zero-mode loop divergences, and hence we want supersymmetry to cure those pathological divergences even in string theory., 30 pages 13 figures eps; typos corrected. to appear in Nucl. Phys. B
Published: 2000

223. Wide Bandwidth Porous Silicon Coatings for Silicon

Author: K. Kurose, S. Uehara, and T. Matsubara
Subjects: Optics, Materials science, Silicon, chemistry, business.industry, Hybrid silicon laser, Bandwidth (signal processing), chemistry.chemical_element, Optoelectronics, Condensed Matter Physics, business, Porous silicon, Electronic, Optical and Magnetic Materials
Published: 2000

224. Somatic Complaint and Social Suffering Among Survivors of the Cambodian Killing Fields

Author: Edwina S. Uehara, Jennifer Abe-Kim, and Paula T. Morelli
Subjects: medicine.medical_specialty, business.industry, Refugee, education, social sciences, Genocide, medicine.disease, Mental health, humanities, Anthropology, Health care, medicine, Complaint, population characteristics, Narrative, Psychology, business, Psychiatry, human activities, Somatization, Social Sciences (miscellaneous), Psychopathology, Clinical psychology
Abstract: Summary Illness narratives from two Cambodian Killing Fields survivors are used to explore conflicts between professional and lay perspectives on somatic complaints. Professionals see somatic complaints as psychopathology, while Cambodian survivors see it as authentic embodied pain. Survivor perspectives implicate professionals and care systems as causes of suffering. More inquiry is needed to understand survivor perspectives and the role of care systems in exacerbating/alleviating survivor suffering.
Published: 2000

225. Cyclotron masses in InGaAs/GaAs superlattices and InGaAs/AlAs superlattices

Author: S. Uehara, T. Ikaida, Nobuya Mori, N. Miura, Chihiro Hamaguchi, H. Momose, and H. Arimoto
Subjects: Materials science, Condensed matter physics, Ingaas gaas, Superlattice, Cyclotron, Cyclotron resonance, Condensed Matter Physics, Thermal conduction, Laser, law.invention, law, Monolayer, General Materials Science, Electrical and Electronic Engineering
Abstract: Cyclotron resonance (CR) measurements have been carried out to evaluate the effective mass of electron in (InGaAs)n/(GaAs)nsuperlattices (SLs) and (InGaAs)n/(AlAs)nSLs. To clarify the dependence of cyclotron mass on the monolayer numbern , we measured CR signals using pulsed high-magnetic fields up to 150 T and a far-infrared laser. We found clear cyclotron resonances in the transmission of 10.6 μ m at 75 T at room temperature in (InGaAs)n/(GaAs)nSLs and little dependence on the monolayer number n in the SLs. However, for (InGaAs)n/(AlAs)nSLs, a large dependence of cyclotron mass on the monolayer number n was observed. We consider that these dependencies are related to the difference between the barrier height in the SLs and the influence of nonparabolicity on the conduction subbands in the SLs.
Published: 2000

226. Precise measurement of thee+e−→μ+μ−reaction ats=57.77 GeV

Author: S. Odaka, Makoto Sakuda, M. Takita, M. Higuchi, F. Takasaki, Y. Arai, Motoyuki Sato, K. Amako, T. Ohsugi, M. Daigo, Y. Asano, Koji Abe, K. Miyake, Nobuaki Sato, T. Tsuboyama, H. Ohyama, M. Shioden, J. Shirai, M. Miura, K. Tobimatsu, Y. Yonezawa, K. Ogawa, Akira Ono, M. Chiba, E. K. Matsuda, Y. Homma, Y. Takada, T. Ohama, Y. Yamada, I. Nakano, J. Haba, T. Hirose, M. Fukawa, Y. Fukushima, J. Kanzaki, H. Kurashige, Y. Watase, N. Tamura, Y. Nagashima, Takashi Kondo, Tatsumi Arima, Y. Hemmi, R. Kikuchi, T. T. Korhonen, H. Sakamoto, K. Yusa, Y. Iwata, Y. Chiba, Y. Nakagawa, Tetsuo Matsui, T. Watanabe, N. Ishihara, S. Uehara, D. Tatsumi, H. Hamasaki, A. Okamoto, Hidetomo Yoshida, T. Sumiyoshi, T. Yamagata, Y. Unno, J. Pennanen, Takahiro Nakamura, F. Yabuki, S. Mori, and K. Okabe
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Muon, biology, Electron–positron annihilation, Venus, Born approximation, biology.organism_classification, S-matrix
Published: 1998

227. Measurement of the charged multiplicity of bottom and light quark events in e+e− annihilation at GeV

Author: H. Hamasaki, Yoshiyuki Watase, Y. Nakagawa, T. Watanabe, T. Matsui, Y. Iwata, Y. Takada, Y. Asano, Masami Chiba, Koji Abe, Taro Ohama, K. Ogawa, Motomasa Daigo, A. Ono, Nobuaki Sato, T. Ohsugi, E. K. Matsuda, T. Kondo, Junichi Kanzaki, Ryusaburo Kikuchi, H. Ohyama, K. Amako, K. Tobimatsu, Y. Yamada, Makoto Sakuda, Hiroshi Sakamoto, M. Sato, Fumihiko Takasaki, T. Yamagata, A. Okamoto, J. Shirai, Masato Higuchi, Itsuo Nakano, Y. Arai, M. Shioden, N. Tamura, K. Yusa, Tachishige Hirose, Yoshinobu Unno, Y. Nagashima, J. Pennanen, T. Sumiyoshi, Y. Chiba, Yasuo Hemmi, S. Uehara, F. Yabuki, Yasutaka Fukushima, Nobuhiro Ishihara, D. Tatsumi, Teruo Nakamura, T. T. Korhonen, Toru Tsuboyama, Kozo Miyake, Shigeru Odaka, Shigeki Mori, J. Haba, Yasushige Yonezawa, M. Fukawa, K. Okabe, M. Takita, H. Yoshida, Hisaya Kurashige, and Yasuhiro Homma
Subjects: Physics, Quark, Nuclear and High Energy Physics, Top quark, Particle physics, Annihilation, 010308 nuclear & particles physics, High Energy Physics::Lattice, High Energy Physics::Phenomenology, Theoretical models, Multiplicity (mathematics), 7. Clean energy, 01 natural sciences, Bottom quark, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Event (particle physics), Lepton
Abstract: The charged-particle multiplicity is measured for b -quark and light-quark ( u , d , s ) events in e + e − annihilation at s =58 GeV. Two independent methods, lepton tagging and decay-length tagging, are applied to enrich b -quark events. These methods provide event samples having different concentrations of b -quark events. The mean charged multiplicity is measured to be 19.38±0.27±0.84 for b -quark events, and 15.91±0.04±0.70 for light-quark events. The results are compared with predictions of phenomenological and theoretical models.
Published: 1998

228. Measurement of the proton-antiproton pair production from two-photon collisions at TRISTAN

Author: Makoto Sakuda, H. Hamasaki, Tachishige Hirose, Yoshinobu Unno, Y. Iwata, M. Sato, Yoshiyuki Watase, Y. Asano, A. Ono, Nobuaki Sato, Koji Abe, Shigeki Mori, D. Tatsumi, Y. Arai, Fumihiko Takasaki, E. K. Matsuda, T. Watanabe, T. Matsui, H. Hanai, Y. Yamada, I. Nakano, N. Tamura, Y. Takada, T. Kondo, T. Ohsugi, K. Yusa, Yasuo Hemmi, Masami Chiba, S. Uehara, K. Tobimatsu, A. Okamoto, Taro Ohama, H. Ohyama, K. Amako, Motomasa Daigo, Y. Nakagawa, Yasutaka Fukushima, Hiroshi Sakamoto, T. Sumiyoshi, T. Yamagata, Masato Higuchi, J. Haba, K. Ogawa, Ryusaburo Kikuchi, M. Shioden, J. Shirai, J. Pennanen, Y. Nagashima, M. Takita, H. Yoshida, Hisaya Kurashige, Junichi Kanzaki, Yasuhiro Homma, K. Okabe, Nobuhiro Ishihara, Teruo Nakamura, T. T. Korhonen, Toru Tsuboyama, Kozo Miyake, Shigeru Odaka, Y. Chiba, Yasushige Yonezawa, M. Fukawa, and F. Yabuki
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Proton, 010308 nuclear & particles physics, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, Diquark, Cross section (physics), Pair production, Two-photon excitation microscopy, Antiproton, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider
Abstract: The cross section of the γγ → p p reaction was measured at two-photon center-of-mass energy (Wγγ) between 2.2 and 3.3 GeV, using the two-photon process at an e+e− collider, TRISTAN. The Wγγ dependence of the cross section integrated over a c.m. angular region of | cos θ ∗ | is in good agreement with the previous measurements and the theoreticalv prediction based on diquark model in the high Wγγ region.
Published: 1997

229. $D^{*\pm}$ inclusive production in two-photon process at $\sqrt{s}=58$ GeV in TRISTAN

Author: M. Takita, M. Sato, Y. Takada, Y. Arai, Yasuo Hemmi, E. K. Matsuda, S. Uehara, K. Yusa, Masami Chiba, Taro Ohama, H. Yoshida, Motomasa Daigo, Y. Nagashima, T. Yamagata, Tachishige Hirose, T. Ohsugi, Yasushige Yonezawa, J. Pennanen, Hisaya Kurashige, Makoto Sakuda, H. Ohyama, J. Shirai, Y. Chiba, J. Haba, Yasuhiro Homma, Shigeki Mori, D. Tatsumi, Yoshiyuki Watase, Yoshinobu Unno, Itsuo Nakano, Y. Yamada, A. Ono, Yasutaka Fukushima, Y. Iwata, T. Sumiyoshi, M. Fukawa, Junichi Kanzaki, K. Okabe, T. Watanabe, T. Matsui, Ryusaburo Kikuchi, Hiroshi Sakamoto, Masato Higuchi, Fumihiko Takasaki, M. Shioden, A. Okamoto, Teruo Nakamura, T. T. Korhonen, Toru Tsuboyama, Koji Abe, H. Hanai, Kozo Miyake, Shigeru Odaka, Nobuhiro Ishihara, N. Tamura, F. Yabuki, K. Tobimatsu, H. Hamasaki, K. Ogawa, K. Amako, Nobuaki Sato, T. Kondo, Y. Asano, and Y. Nakagawa
Subjects: Nuclear physics, Physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Scientific method, 0103 physical sciences, Production (economics), 010306 general physics, 01 natural sciences
Published: 1997

230. Measurement of τ polarization in e+e− annihilation at

Author: H. Hanai, J. Haba, K. Abe, K. Amako, Y. Arai, T. Arima, Y. Asano, M. Chiba, Y. Chiba, M. Daigo, M. Fukawa, Y. Fukushima, H. Hamasaki, Y. Hemmi, M. Higuchi, T. Hirose, Y. Homma, N. Hosoda, N. Ishihara, Y. Iwata, J. Kanzaki, R. Kikuchi, T. Kondo, T.T. Korhonen, H. Kurashige, E.K. Matsuda, T. Matsui, M. Miura, K. Miyake, S. Mori, Y. Nagashima, Y. Nakagawa, T. Nakamura, I. Nakano, S. Odaka, K. Ogawa, T. Ohama, T. Ohsugi, H. Ohyama, K. Okabe, A. Okamoto, A. Ono, J. Pennanen, H. Sakamoto, M. Sakuda, M. Sato, N. Sato, M. Shioden, J. Shirai, T. Sumiyoshi, Y. Takada, F. Takasaki, M. Takita, N. Tamura, D. Tatsumi, K. Tobimatsu, T. Tsuboyama, S. Uehara, Y. Unno, T. Watanabe, Y. Watase, F. Yabuki, Y. Yamada, T. Yamagata, Y. Yonezawa, H. Yoshida, and K. Yusa
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, media_common.quotation_subject, High Energy Physics::Phenomenology, Polarization (waves), Asymmetry, law.invention, law, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Collider, Energy (signal processing), Lepton, media_common
Abstract: The polarization of tau leptons in the reaction e+ e- --> tau+ tau- has been measured using a e+e- collider, TRISTAN, at the center-of-mass energy of 58 GeV. From the kinematical distributions of daughter particles in tau --> e nu nu-bar, mu nu nu-bar, rho nu or pi(K) nu decays, the average polarization of tau- and its forward-backward asymmetry have been evaluated to be 0.012 +- 0.058 and 0.029 +- 0.057, respectively.
Published: 1997

231. Precise Measurement of Bhabha scattering at a center-of-mass energy of 57.77 GeV

Author: T. Ohsugi, Shigeki Mori, D. Tatsumi, Tatsumi Arima, H. Hanai, K. Mikaye, A. Ono, Y. Asano, Teruo Nakamura, Y. Yamada, Tachishige Hirose, K. Tobimatsu, N. Hosoda, T. T. Korhonen, Masato Higuchi, Toru Tsuboyama, Nobuaki Sato, Y. Nagashima, Yoshinobu Unno, Makoto Sakuda, Shigeru Odaka, Y. Arai, Fumihiko Takasaki, M. Miura, T. Sumiyoshi, M. Sato, J. Shirai, Y. Iwata, K. Yusa, Yasuo Hemmi, S. Uehara, A. Okamoto, Nobuhiro Ishihara, T. Kondo, Y. Chiba, Ryusaburo Kikuchi, Hisaya Kurashige, N. Tamura, Y. Nakagawa, Junichi Kanzaki, T. Yamagata, M. Takita, K. Amako, Yasushige Yonezawa, I. Nakano, Yasutaka Fukushima, Yasuhiro Homma, J. Pennanen, J. Haba, K. Ogawa, K. Okabe, H. Yoshida, Y. Takada, E. K. Matsuda, Masami Chiba, Taro Ohama, Motomasa Daigo, Hiroshi Sakamoto, Yoshiyuki Watase, T. Watanabe, T. Matsui, H. Ohyama, H. Hamasaki, M. Shioden, F. Yabuki, Mineo Fukawa, and Koji Abe
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, 010308 nuclear & particles physics, Scattering, Electroweak interaction, 01 natural sciences, Nuclear physics, 0103 physical sciences, Vacuum polarization, Center of mass, Sensitivity (control systems), 010306 general physics, Particle Physics - Experiment, Energy (signal processing), Bhabha scattering
Abstract: Bhabha scattering at a center-of-mass energy of 57.77 GeV has been measured using the VENUS detector at KEK TRISTAN. The precision is better than 1% in scattering angle regions of |cos\ensuremath{\theta}|\ensuremath{\leqslant}0.743 and 0.822\ensuremath{\leqslant}cos\ensuremath{\theta}\ensuremath{\leqslant}0.968. A model-independent scattering-angle distribution is extracted from the measurement. The distribution is in good agreement with the prediction of the standard electroweak theory. The sensitivity to underlying theories is examined, after unfolding the photon-radiation effect. The ${\mathit{q}}^{2}$ dependence of the photon vacuum polarization, frequently interpreted as a running of the QED fine-structure constant, is directly observed with a significance of three standard deviations. The ${\mathit{Z}}^{0}$ exchange effect is clearly seen when the distribution is compared with the prediction from QED (photon exchanges only). The agreement with the standard theory leads us to constraints on extensions of the standard theory. In all quantitative discussions, correlations in the systematic error between angular bins are taken into account by employing an error matrix technique.
Published: 1997

232. Erratum to: 'Measurement of masses and branching ratios of Ξc+ and Ξc0 baryons' [Phys. Lett. B 605 (2004) 237]

Author: G. R. Moloney, N. Soni, Noriaki K. Sato, S. Cole, U. Bitenc, Y. Yamashita, I. Bizjak, T. Tsuboyama, Q. L. Xie, T. E. Browder, G. S. Varner, Gobinda Majumder, T. Lesiak, H. Kawai, E. Nakano, M. Tanaka, R. Itoh, T. Tsukamoto, T. Iijima, J. S. Kang, Kazuo Abe, B. D. Yabsley, Y. Asano, A. Chen, P. Krokovny, T. Nagamine, Y. Yusa, Yasushi Nagasaka, S. Okuno, Y. Teramoto, Y. Choi, M. Rozanska, M. Danilov, C. C. Kuo, Shaji Kumar, S. K. Choi, Byung Gu Cheon, T. Okabe, N. Tamura, O. Nitoh, A. Yamaguchi, S. W. Lin, K. Ueno, T. Kawasaki, S. Stanič, S. Nishida, G. Leder, W. Ostrowicz, Y. Chao, H. Ozaki, K. S. Park, H. R. Khan, T. J. Gershon, F. Mandl, D. Žontar, S. L. Olsen, V.N. Zhilich, K. Tamai, T. Nakadaira, Y. Sakai, Rainer Stamen, S. Semenov, S. Eidelman, M. Nakao, W. A. Mitaroff, J. Ying, H. Park, A. Bozek, Motoki Iwasaki, Y. Ushiroda, M. Bračko, S. R. Hou, J. MacNaughton, T. Matsumoto, Y. J. Kwon, A. Imoto, A. M. Bakich, Z. Natkaniec, T. Ohshima, O. Schneider, W. S. Hou, G. Gokhroo, A. Ishikawa, A. Bay, N. Gabyshev, I. Adachi, Long Zhang, S. Fratina, T. Sumiyoshi, Jia-ju Zhang, L. S. Peak, S. Villa, Z. P. Zhang, M. Dash, N. Parslow, L. E. Piilonen, T. Schietinger, J. H. Kang, R. Chistov, A. Garmash, S. Uehara, Kevin Varvell, A. Matyja, M. Starič, J. Dalseno, J. Haba, N. Katayama, S. Bahinipati, H. Aihara, A. Kuzmin, A. Bondar, S. Korpar, Jolanta Brodzicka, S. Ogawa, Hiroyuki Sagawa, K. Kinoshita, A. Chuvikov, J. S. Lange, L. Hinz, Masashi Hazumi, A. Somov, A. Go, K. Inami, S. Uno, C. H. Wang, C. C. Zhang, H. Shibuya, V. Eiges, H. Miyata, Y. Hoshi, K. Hayasaka, and C. C. Wang
Subjects: Baryon, Physics, Nuclear and High Energy Physics, Particle physics, Web of science, Statistical physics, Branching (polymer chemistry)
Abstract: Reference EPFL-ARTICLE-154481doi:10.1016/j.physletb.2005.05.014View record in Web of Science Record created on 2010-11-05, modified on 2017-05-12
Published: 2005

233. Measurement of theCPviolation parameters inB0→π+π−decays

Author: A. Zupanc, G. Pakhlova, W. S. Hou, J. G. Shiu, J. Dalseno, Y. Watanabe, Phillip Urquijo, H. Sahoo, S. Yashchenko, T. Uglov, M. Ritter, Norihito Muramatsu, G. Bonvicini, E. Kato, T. Mori, M. Feindt, V. Chekelian, J. Haba, O. Nitoh, S. L. Olsen, V. Bhardwaj, S. Nishida, S. Ogawa, K. Sumisawa, P. Krokovny, D. H. Kah, A.E. Bondar, A. Rostomyan, K. Arinstein, K. Cho, A. Drutskoy, R. Mussa, Toru Iijima, S. Korpar, T. Julius, Hiroaki Aihara, Y. Teramoto, A. Ishikawa, Sunmin Ryu, A. Bay, M. Nakao, Po-Hsun Chen, R. Chistov, G. Tatishvili, Torben Ferber, Yongsun Kim, C. Z. Yuan, V. Gaur, C. W. Park, Yang Li, P. Križan, K. Trabelsi, P. Lukin, B. R. Ko, Y. Choi, G. Schnell, S. Uno, C. Schwanda, P. Pakhlov, K. Dutta, Z. Doležal, I. Adachi, C. P. Shen, E. Solovieva, Yoshinobu Unno, X. L. Wang, N. K. Nisar, T. Hara, L. Santelj, M. Shapkin, A. Bozek, J. Libby, K. T. Kim, H. Park, S. H. Lee, Hitoshi Yamamoto, K. M. Williams, A. Chen, P. Vanhoefer, R. Gillard, J. B. Kim, L. Li Gioi, A. M. Bakich, T. K. Pedlar, A. Moll, A.L. Sibidanov, T. E. Browder, S. E. Vahsen, S. K. Choi, T. Tsuboyama, M. Nayak, T. Aushev, H. Hayashii, B. Bhuyan, V. Zhilich, Y. M. Goh, H. Kawai, Z. Drásal, Y. Iwasaki, Z. P. Zhang, C. Ng, K. Senyo, G. Varner, James E. Fast, Marko Petrič, B.A. Shwartz, K. Prothmann, J. Klucar, D. Semmler, Y. Hoshi, C. Niebuhr, Y. Sakai, H. J. Hyun, M. Steder, O. Schneider, Yasushi Nagasaka, J. Li, Y. Yook, V. Savinov, K. Kinoshita, U. Tamponi, G. B. Mohanty, Semen Eidelman, C. H. Wang, A. Bala, T. Saito, B. G. Cheon, A.S. Kuzmin, D. Matvienko, Peter Kodys, R. Mizuk, Y. Yusa, Leo Piilonen, Vladimir Zhulanov, S. Uehara, M. E. Sevior, D. Cinabro, D. M. Asner, T. A. Shibata, H. Miyata, D. Y. Kim, Prafulla Kumar Behera, S. Ganguly, B. Kronenbitter, E. Won, Mikhail Danilov, O. Seon, Frank Simon, M. Röhrken, K. Chilikin, T. Sumiyoshi, C. Van Hulse, K. Hayasaka, T. Sanuki, Jung-Hyun Kim, V. Vorobyev, S. Sandilya, R. Pestotnik, S. Okuno, Takuya Higuchi, Bruce Yabsley, K. Miyabayashi, E. Nedelkovska, A. J. Schwartz, H. J. Kim, Chang Liu, H. Farhat, B. Golob, Y. S. Sohn, Samo Stanič, Y. J. Kwon, C. Kiesling, M. Starič, H. G. Moser, M. Sumihama, Y. Ushiroda, Y. Yamashita, V.M. Aulchenko, T. Kawasaki, M. Uchida, V. Chobanova, D. Liventsev, A. Frey, R. Itoh, P. Wang, M. N. Wagner, D. Dutta, H. K. Park, M. Bračko, and M. Watanabe
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Unitarity, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance (chemistry), 01 natural sciences, law.invention, Nuclear physics, KEKB, law, Isospin, 0103 physical sciences, CP violation, 010306 general physics, Collider, Internal and external angle
Abstract: We present a measurement of the charge-parity (CP) violating parameters in B0→π+π- decays. The results are obtained from the final data sample containing 772×106 BB pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the CP violation parameters ACP(B0→π+π-)=+0.33±0.06(stat)±0.03(syst),SCP(B0→π+π-)=-0.64±0.08(stat)±0.03(syst),where ACP and SCP represent the direct and mixing-induced CP asymmetries in B0→π+π- decays, respectively. Using an isospin analysis including results from other Belle measurements, we find 23.8
Published: 2013

234. Experimental constraints on the spin and parity of theZ(4430)+

Author: K. Chilikin, R. Mizuk, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I.-S. Cho, K. Cho, V. Chobanova, S.-K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W.-S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, D. Liventsev, P. Lukin, J. MacNaughton, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, C. Oswald, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, A. Rostomyan, H. Sahoo, T. Saito, K. Sakai, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, A. Sibidanov, F. Simon, Y.-S. Sohn, A. Sokolov, E. Solovieva, M. Starič, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, M. N. Wagner, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, S. Yashchenko, Y. Yook, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, and A. Zupanc
Subjects: Physics, Nuclear and High Energy Physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, Quark model, Dalitz plot, 16. Peace & justice, 01 natural sciences, Charmed baryons, Baryon, Nuclear physics, KEKB, 0103 physical sciences, Z(4430), Atomic physics, 010306 general physics
Abstract: We report the results of several studies of the Λc+π+π-X final state in continuum e+e- annihilation data collected by the Belle detector. An analysis of angular distributions in Λc(2880)+→Σc(2455)0, ++π+,- decays strongly favors a Λc(2880)+ spin assignment of 52 over 32 or 12. We find evidence for Λc(2880)+→Σc(2520)0,++π+,- decay and measure the ratio of Λc(2880)+ partial widths Γ(Σc(2520)π)/Γ(Σc(2455)π)=0.225±0. 062±0.025. This value favors the Λc(2880)+ spin-parity assignment of 52+ over 52-. We also report the first observation of Λc(2940) +→Σc(2455)0,++π+,- decay and measure Λc(2880)+ and Λc(2940)+ mass and width parameters. These studies are based on a 553fb-1 data sample collected at or near the Υ(4S) resonance at the KEKB collider. © 2007 The American Physical Society.
Published: 2013

235. Angular analysis ofB0→ϕK*decays and search forCPviolation at Belle

Author: M. Steder, Z. Drásal, D. Dutta, Yukinori Sato, P. Lukin, B. R. Ko, J. G. Shiu, M. Z. Wang, K. Kinoshita, M. Feindt, U. Tamponi, M. Bračko, T. K. Pedlar, A. Moll, I. Nakamura, D. H. Kah, A. Frey, M. Ritter, M. Watanabe, G. Pakhlova, M. Starič, A.L. Sibidanov, D. Semmler, Y. B. Hsiung, H. K. Park, H. Farhat, G. Tatishvili, S. Yashchenko, T. Julius, G. Varner, K. M. Williams, B. Golob, R. Gillard, S. Sandilya, Po-Hsun Chen, A. Chen, S. E. Vahsen, N. K. Nisar, M. Rozanska, R. Chistov, G. Bonvicini, G. Schnell, Yoshinobu Unno, Y. Hoshi, Mikhail Danilov, M. Röhrken, S. Nishida, P. Krokovny, K. Trabelsi, Y. M. Goh, K. Cho, K. Inami, A. Rostomyan, E. Nakano, C. Van Hulse, C. P. Shen, T. Kuhr, A. Bozek, Y. S. Sohn, H. Kawai, M. Shapkin, M. C. Chang, K. Senyo, H. Kichimi, V. Chekelian, Y. Teramoto, J. Libby, T. Aushev, V. Zhilich, R. Pestotnik, T. Tsuboyama, M. Nayak, G. B. Mohanty, I. Jaegle, K. Miyabayashi, T. A. Shibata, H. Miyata, C. Niebuhr, E. Nedelkovska, Marko Petrič, O. Schneider, Y. Choi, Z. Doležal, X. L. Wang, T. Sumiyoshi, J. Li, R. Mizuk, H. Hayashii, B. Bhuyan, M. T. Prim, Y. Onuki, D. Cinabro, Y. Yamashita, T. Sanuki, W. S. Hou, P. Chang, R. Mussa, J. Klucar, Jung-Hyun Kim, Norihito Muramatsu, O. Nitoh, B. G. Cheon, Torben Ferber, D. Matvienko, V. Savinov, Yongsun Kim, A. Ishikawa, T. Saito, S. Uno, C. Schwanda, M. E. Sevior, M. Nakao, C. H. Wang, E. Solovieva, Hiroaki Aihara, M. J. Kim, P. Križan, Peter Kodys, T. Kawasaki, B. Kronenbitter, T. Kumita, M. Uchida, E. Won, T. E. Browder, S. H. Lee, Andrey Sokolov, H. Park, V. Chobanova, M. Heider, D. M. Asner, R. Itoh, P. Wang, Y. J. Kwon, Semen Eidelman, Y. Sakai, Toru Iijima, Leo Piilonen, I. Adachi, C. Kiesling, J. B. Kim, A. M. Bakich, D. Červenkov, S. Uehara, D. Y. Kim, H. Sahoo, Z. P. Zhang, T. Uglov, H. O. Kim, A. Bala, V. Gaur, A. Zupanc, Y. Watanabe, Y. Usov, P. Vanhoefer, J. S. Lange, S. Ganguly, and V. Vorobyev
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Partial wave analysis, 01 natural sciences, KEKB, Full data, 0103 physical sciences, CP violation, Statistical analysis, Angular dependence, 010306 general physics
Abstract: We report the measurements of branching fractions and $CP$ violation asymmetries in ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{K}^{*}$ decays obtained in an angular analysis using the full data sample of $772\ifmmode\times\else\texttimes\fi{}{10}^{6}B\overline{B}$ pairs collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. We perform a partial wave analysis to distinguish among scalar [${B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}(K\ensuremath{\pi}{)}_{0}^{*}$], vector [${B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{K}^{*}(892{)}^{0}$] and tensor [${B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{K}_{2}^{*}(1430{)}^{0}$] components, and determine the corresponding branching fractions to be $\mathcal{B}[{B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}(K\ensuremath{\pi}{)}_{0}^{*}]=(4.3\ifmmode\pm\else\textpm\fi{}0.4\ifmmode\pm\else\textpm\fi{}0.4)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, $\mathcal{B}[{B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{K}^{*}(892{)}^{0}]=(10.4\ifmmode\pm\else\textpm\fi{}0.5\ifmmode\pm\else\textpm\fi{}0.6)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and $\mathcal{B}[{B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{K}_{2}^{*}(1430{)}^{0}]=({5.5}_{\ensuremath{-}0.7}^{+0.9}\ifmmode\pm\else\textpm\fi{}1.0)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$. We also measure the longitudinal polarization fraction ${f}_{L}$ in ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{K}^{*}(892{)}^{0}$ and ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{K}_{2}^{*}(1430{)}^{0}$ decays to be $0.499\ifmmode\pm\else\textpm\fi{}0.030\ifmmode\pm\else\textpm\fi{}0.018$ and ${0.918}_{\ensuremath{-}0.060}^{+0.029}\ifmmode\pm\else\textpm\fi{}0.012$, respectively. The first quoted uncertainties are statistical and the second are systematic. In total, we measure 26 parameters related to branching fractions, polarization and $CP$ violation in the ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{K}^{*}$ system. No evidence for $CP$ violation is found.
Published: 2013

236. Search for Bottomonium States in Exclusive RadiativeΥ(2S)Decays

Author: L. E. Piilonen, M. Z. Wang, U. Tamponi, G. Pakhlova, M. Steder, V. Gaur, Norihito Muramatsu, G. Schnell, T. Iijima, M. Nakao, S. Yashchenko, P. Lukin, B. R. Ko, A. Frey, J. MacNaughton, E. Kato, Marko Petrič, J. Wiechczynski, T. Julius, A. Drutskoy, T. K. Pedlar, Po-Hsun Chen, R. Chistov, H. J. Hyun, A.E. Bondar, K. Trabelsi, C. P. Shen, T. Aushev, J. Li, A.L. Sibidanov, A. Moll, J. Yamaoka, V. Bhardwaj, K. Senyo, Kiyoshi Tanida, W. S. Hou, D. Matvienko, S. Nishida, M. Feindt, D. Semmler, A. Rostomyan, Z. Doležal, X. L. Wang, D. H. Kah, S. E. Vahsen, V. Vorobyev, D. M. Asner, B. G. Cheon, Tariq Aziz, I. Adachi, Yang Li, T. Sumiyoshi, C. Van Hulse, Frank Simon, Y. B. Hsiung, G. Tatishvili, G. Bonvicini, K. M. Williams, Y. Choi, Sang Hoon Lee, J. B. Kim, C. Oswald, N. K. Nisar, T. Hara, L. Santelj, R. Mussa, T. Sanuki, Yoshinobu Unno, Z. P. Zhang, H. O. Kim, Y. Iwasaki, Y. J. Kwon, M. Shapkin, A. Ishikawa, B. Golob, R. Gillard, T. A. Shibata, H. Miyata, T. Saito, H. Park, T. Kawasaki, J. S. Lange, M. Röhrken, K. Chilikin, A. Bozek, O. Schneider, P. Krokovny, Y. Hoshi, S.I. Eidelman, C. W. Park, P. Križan, S. Ganguly, S. K. Choi, Y. M. Goh, K. Hayasaka, Peter Kodys, K. Cho, A.S. Kuzmin, Anze Zupanc, B. Bhuyan, S. Korpar, H. Farhat, Andrey Sokolov, T. E. Browder, S. Uehara, M. Uchida, J. H. Kang, D. Y. Kim, V. Chobanova, J. Klucar, R. Pestotnik, H. Hayashii, G. B. Mohanty, D. Liventsev, Y. Sakai, V. Savinov, Sunmin Ryu, James E. Fast, Yukinori Sato, J. G. Shiu, J. Dalseno, E. Won, A. Bala, O. Nitoh, Jochen Dingfelder, Y. S. Sohn, R. Mizuk, Y. Yusa, V.N. Zhilich, G. S. Varner, A. M. Bakich, M. Starič, Phillip Urquijo, Z. Q. Liu, Hiroaki Aihara, T. Kumita, K. Miyabayashi, Torben Ferber, Yongsun Kim, R. Itoh, M. Ritter, P. Vanhoefer, H. Kawai, C. Ng, P. Wang, M. N. Wagner, C. Z. Yuan, S. Uno, Y. Watanabe, Yasushi Nagasaka, S. Sandilya, N. Gabyshev, Samo Stanič, C. Kiesling, M. Bračko, C. C. Zhang, M. Watanabe, C. H. Wang, D. Dutta, H. K. Park, Y. Yamashita, S. Ogawa, H. Sahoo, T. Uglov, E. Solovieva, D. Cinabro, Jung-Hyun Kim, B.A. Shwartz, S. Okuno, M. E. Sevior, Y. Teramoto, Bruce Yabsley, K. Sakai, J. Libby, T. Tsuboyama, M. Nayak, and J. Haba
Subjects: Physics, Luminosity (scattering theory), Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, Resonance, 01 natural sciences, Nuclear physics, Pion, 0103 physical sciences, Atomic physics, 010306 general physics, Bar (unit)
Abstract: We search for bottomonium states in gamma(2S) -> (b (b) over bar)gamma decays with an integrated luminosity of 24.7 fb(-1) recorded at the gamma(2S) resonance with the Belle detector at KEK, containing (157.8 +/- 3.6) x 10(6) gamma(2S) events. The (b (b) over bar) system is reconstructed in 26 exclusive hadronic final states composed of charged pions, kaons, protons, and K-0(S) mesons. We find no evidence for the state recently observed around 9975 MeV (X-b (b) over bar) in an analysis based on a data sample of 9.3 x 10(6) gamma(2S) events collected with the CLEO III detector. We set a 90% confidence level upper limit on the branching fraction B[gamma(2S) -> X-b (b) over bar gamma] x Sigma(i) B[X-b (b) over bar -> h(i)] eta(b)(1S)gamma] x Sigma B-i[eta(b)(1S) -> h(i)] < 3.7 x 10(-6).
Published: 2013

237. Study of exclusiveB→Xuℓνdecays and extraction of|Vub|using full reconstruction tagging at the Belle experiment

Author: Mikhail Danilov, M. Röhrken, K. Chilikin, Vladimir Zhulanov, M. E. Sevior, H. K. Park, S. Nishida, B. Kronenbitter, Y. Li, S. Okuno, V.E. Shebalin, M. Bračko, R. Mussa, D. M. Asner, S. H. Lee, H. Farhat, B. Golob, S. L. Olsen, A. Rostomyan, M. Watanabe, I. S. Cho, G. Tatishvili, Bruce Yabsley, A. Ishikawa, T. Nozaki, R. Pestotnik, S. E. Vahsen, Yoshinobu Unno, S. Uehara, M. Nakao, D. H. Kah, A. Bala, Jochen Dingfelder, P. Križan, J. Libby, D. Dutta, W. S. Hou, H. Hayashii, T. Tsuboyama, Y. Iwasaki, Y. S. Sohn, Y. Sakai, Yukinori Sato, J. G. Shiu, D. Y. Kim, M. Nayak, T. Saito, E. Nakano, Torben Ferber, C. Oswald, P. Krokovny, Yongsun Kim, J. Dalseno, K. T. Kim, K. Cho, M. Sumihama, O. Schneider, Leo Piilonen, T. Kawasaki, C. Van Hulse, J. H. Kang, S. Uno, C. Schwanda, Y. Ushiroda, R. Gillard, J. Klucar, D. Cinabro, Peter Kodys, Phillip Urquijo, H. J. Kim, M. Ritter, M. Shapkin, S. Ogawa, P. Lukin, B. R. Ko, K. M. Williams, A.S. Kuzmin, O. Seon, Frank Simon, V. Savinov, M. Uchida, Z. Natkaniec, V. Chobanova, E. Won, Jung-Hyun Kim, G. Schnell, T. K. Pedlar, Y. Yamashita, James E. Fast, A. Moll, Z. Drásal, C. H. Wang, D. A. Epifanov, D. Liventsev, Marko Petrič, S. Sandilya, J. Haba, A.L. Sibidanov, H. J. Hyun, P. Smerkol, Y. Teramoto, Toru Iijima, Y. Yook, H. Sahoo, V.M. Aulchenko, Yueh-Feng Liu, A. Bozek, T. Uglov, Semen Eidelman, C. Ng, K. Senyo, B. G. Cheon, O. Nitoh, A. Drutskoy, M. Steder, G. Varner, M. Starič, I. Adachi, K. Miyabayashi, S. Yashchenko, E. Nedelkovska, R. Itoh, D. Matvienko, A. Frey, P. Wang, M. N. Wagner, Y. Choi, Y. Hoshi, Z. Doležal, T. A. Shibata, V. Chekelian, H. Miyata, T. Kuhr, T. Julius, E. Solovieva, Yasushi Nagasaka, Po-Hsun Chen, H. Park, K. Trabelsi, Hiroaki Aihara, J. B. Kim, K. Sumisawa, T. E. Browder, G. B. Mohanty, R. Chistov, C. P. Shen, A. M. Bakich, T. Sumiyoshi, T. Sanuki, T. Aushev, C. Kiesling, V. Zhilich, S. Korpar, Z. P. Zhang, J. Li, N. K. Nisar, L. Santelj, Samo Stanič, Y. J. Kwon, Y. M. Goh, V. Gaur, A. Zupanc, Kevin Varvell, Y. Watanabe, V. Vorobyev, Sunmin Ryu, P. Vanhoefer, and S. Ganguly
Subjects: Hadronic decay, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, 01 natural sciences, Omega, Belle experiment, Combinatorics, Photon emission, 0103 physical sciences, Matrix element, 010306 general physics
Abstract: We report the results of a study of the exclusive semileptonic decays ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$, ${\overline{B}}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$, ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{0}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$, ${\overline{B}}^{0}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$ and ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\omega}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$, where $\ensuremath{\ell}$ represents an electron or a muon. The events are tagged by fully reconstructing a second $B$ meson in the event in a hadronic decay mode. The measured branching fractions are $\mathcal{B}({B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}})=(0.80\ifmmode\pm\else\textpm\fi{}0.08\ifmmode\pm\else\textpm\fi{}0.04)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, $\mathcal{B}({\overline{B}}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}})=(1.49\ifmmode\pm\else\textpm\fi{}0.09\ifmmode\pm\else\textpm\fi{}0.07)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, $\mathcal{B}({B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{0}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}})=(1.83\ifmmode\pm\else\textpm\fi{}0.10\ifmmode\pm\else\textpm\fi{}0.10)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, $\mathcal{B}({\overline{B}}^{0}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}})=(3.22\ifmmode\pm\else\textpm\fi{}0.27\ifmmode\pm\else\textpm\fi{}0.24)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, and $\mathcal{B}({B}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\omega}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}})=(1.07\ifmmode\pm\else\textpm\fi{}0.16\ifmmode\pm\else\textpm\fi{}0.07)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, where the first error is statistical and the second one is systematic. The obtained branching fractions are inclusive of soft photon emission. We also determine the branching fractions as a function of the 4-momentum transfer squared to the leptonic system ${q}^{2}=({p}_{\ensuremath{\ell}}+{p}_{\ensuremath{\nu}}{)}^{2}$, where ${p}_{\ensuremath{\ell}}$ and ${p}_{\ensuremath{\nu}}$ are the lepton and neutrino 4-momenta, respectively. Using the pion modes, a recent light cone sum rule calculation, lattice QCD results and a model-independent description of the hadronic form factor, a value of the Cabibbo-Kobayashi-Maskawa matrix element $|{V}_{ub}|=(3.52\ifmmode\pm\else\textpm\fi{}0.29)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$ is extracted. A structure in the two-pion invariant mass distribution near $1.3\text{ }\text{ }\mathrm{GeV}/{c}^{2}$, which might be dominated by the decay ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{f}_{2}(1270){\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$, ${f}_{2}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, is seen. These results are obtained from a $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample that contains $772\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs, collected near the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider.
Published: 2013

238. Measurement of exclusiveΥ(1S)andΥ(2S)decays into vector-pseudoscalar final states

Author: S. H. Lee, D. M. Asner, G. Tatishvili, Z. Natkaniec, P. Lukin, B. R. Ko, B.A. Shwartz, K. Miyabayashi, S. Sandilya, Y. Sakai, M. Sumihama, S. Okuno, N. Gabyshev, V. Gaur, Andrey Sokolov, E. Nedelkovska, O. Nitoh, J. Libby, J. H. Kang, I. S. Cho, Y. Teramoto, C. Ng, K. Senyo, D. Cinabro, T. K. Pedlar, A. Bozek, W. Ostrowicz, A. Moll, Jung-Hyun Kim, D. A. Epifanov, M. Steder, Yasushi Nagasaka, Hiroaki Aihara, Y. Yamashita, K. T. Kim, H. Farhat, A. Zupanc, C. Z. Yuan, Y. Li, Mikhail Danilov, James E. Fast, T. A. Shibata, R. Gillard, G. Schnell, J. Haba, B. Golob, Sunmin Ryu, Rupert Leitner, C. Kiesling, H. Miyata, E. Solovieva, V.M. Aulchenko, Yueh-Feng Liu, Y. Yook, M. Bischofberger, Semen Eidelman, A. Bala, S. Ogawa, D. Dutta, H. K. Park, Y. Watanabe, M. Shapkin, Jochen Dingfelder, R. Mussa, Norihito Muramatsu, Hitoshi Yamamoto, T. Peng, T. Mori, T. Kumita, P. Vanhoefer, K. Kinoshita, U. Tamponi, Y. S. Sohn, M. Röhrken, K. Chilikin, T. E. Browder, Leo Piilonen, A. Ishikawa, M. Starič, M. Nakao, T. Tsuboyama, Toru Iijima, S. E. Vahsen, M. Nayak, K. Hayasaka, C. W. Park, A. Frey, P. Križan, H. J. Kim, S. Korpar, Z. Q. Liu, Y. Iwasaki, O. Seon, Frank Simon, Chang Liu, E. Nakano, Z. P. Zhang, I. Adachi, C. Van Hulse, O. Schneider, P. Krokovny, V. Vorobyev, A.S. Kuzmin, K. Cho, J. B. Kim, Yukinori Sato, Yoshinobu Unno, A. M. Bakich, V. Chekelian, H. Hayashii, S. L. Olsen, M. Bračko, J. G. Shiu, J. Dalseno, T. Saito, V.E. Shebalin, D. H. Kah, Phillip Urquijo, H. Sahoo, Samo Stanič, Y. J. Kwon, M. Ritter, Peter Kodys, Kiyoshi Tanida, C. C. Zhang, S. Ganguly, Y. Choi, M. Watanabe, S. Uehara, Z. Doležal, X. L. Wang, D. Y. Kim, E. Won, T. Sumiyoshi, T. Kawasaki, M. Uchida, V. Chobanova, D. Liventsev, T. Sanuki, R. Itoh, P. Wang, S. Yashchenko, M. N. Wagner, T. Julius, Po-Hsun Chen, A.L. Sibidanov, G. Varner, Y. Hoshi, R. Pestotnik, Torben Ferber, Yongsun Kim, S. Uno, C. Schwanda, K. Dutta, A. Chen, Z. Drásal, A. Drutskoy, C. P. Shen, V. Zhilich, J. Li, J. Yamaoka, G. B. Mohanty, Y. Yusa, W. S. Hou, E. Kato, Marko Petrič, H. J. Hyun, P. Smerkol, B. G. Cheon, D. Matvienko, N. K. Nisar, T. Hara, L. Santelj, Y. M. Goh, P. Pakhlov, H. Park, B. Bhuyan, J. Klucar, V. Savinov, C. H. Wang, S. Nishida, and A. Rostomyan
Subjects: Nuclear physics, Physics, Pseudoscalar, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Hadron, Perturbative QCD, 010306 general physics, 01 natural sciences
Abstract: Using samples of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to KS0K+π- and charge-conjugate (c.c.) states, π+π-π0π0, and π+π-π0, and to the two-body Vector-Pseudoscalar (K*(892)0K0+c.c., K*(892)-K ++c.c., ωπ0, and ρπ) final states. For the first time, signals are observed in the modes Υ(1S)→KS0K+π -+c.c., π+π-π0π0, and Υ(2S)→π+π-π0π0, and evidence is found for the modes Υ(1S)→π+π-π0, K*(892)0K0+c.c., and Υ(2S)→KS0K +π-+c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3σ. The ratios of the branching fractions of Υ(2S) and Υ(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka-suppressed bottomonium decays. © 2013 American Physical Society.
Published: 2013

239. Evidence of a New Narrow Resonance Decaying toχc1γinB→χc1γK

Author: I. Adachi, S. E. Vahsen, T. Saito, R. Mussa, Yoshinobu Unno, Peter Kodys, E. Won, A. Zupanc, J. B. Kim, S. H. Lee, R. Seidl, M. Steder, A. M. Bakich, Kevin Varvell, G. Schnell, A. Ishikawa, P. Pakhlov, E. Panzenböck, H. Farhat, M. Shapkin, Y. Yamashita, Z. Drásal, B. Golob, D. Santel, M. Nakao, S. L. Olsen, P. Križan, W. S. Hou, H. Park, D. H. Kah, Y. Sakai, Y. Watanabe, J. Haba, V.M. Aulchenko, Y. Usov, E. Kato, O. Schneider, Andrey Sokolov, Mikhail Danilov, B.A. Shwartz, K. Senyo, Torben Ferber, E. Nakano, Y. B. Hsiung, Yongsun Kim, M. Z. Wang, C. Kiesling, M. Röhrken, A.S. Kuzmin, K. Chilikin, T. Kawasaki, S. Korpar, J. H. Kang, Marko Petrič, Jolanta Brodzicka, O. Nitoh, Y. Teramoto, C. Van Hulse, Y. S. Sohn, S. Nishida, K. Kinoshita, C. Schwanda, H. J. Hyun, P. Smerkol, V. Bhardwaj, G. Pakhlova, J. S. Lange, K. Dutta, M. Uchida, Jasvinder A. Singh, S. Ganguly, M. Starič, Yukinori Sato, Hiroaki Aihara, V. Chobanova, G. Bonvicini, James E. Fast, B. G. Cheon, J. G. Shiu, D. Liventsev, S. Yashchenko, Vladimir Zhulanov, G. B. Mohanty, A. Rostomyan, J. Dalseno, C. Z. Yuan, D. Matvienko, A. Vinokurova, R. Mizuk, Toru Iijima, A. Frey, R. Pestotnik, T. Julius, Chang Liu, M. E. Sevior, M. J. Kim, Y. Yook, Semen Eidelman, Phillip Urquijo, R. Chistov, M. Ritter, T. Kumita, R. Itoh, P. Krokovny, Rakesh Kumar, P. Wang, M. N. Wagner, V. Gaur, T. E. Browder, Tariq Aziz, Y. J. Kwon, V. Chekelian, D. M. Asner, E. Solovieva, G. Tatishvili, K. Cho, T. Sumiyoshi, T. A. Shibata, H. Miyata, M. Bischofberger, K. Miyabayashi, Z. Natkaniec, S. Uehara, E. Nedelkovska, N. K. Nisar, T. Hara, L. Santelj, B. Bhuyan, G. Varner, T. Sanuki, N. Gabyshev, A. Chen, Y. Hoshi, D. Epifanov, P. Lukin, D. Y. Kim, B. R. Ko, H. Hayashii, J. Klucar, Leo Piilonen, V. Savinov, O. Seon, Frank Simon, Y. M. Goh, C. H. Wang, T. K. Pedlar, A. Moll, K. Inami, D. Semmler, P. Vanhoefer, M. Sumihama, T. Aushev, V. Zhilich, J. Li, J. Yamaoka, Z. P. Zhang, Z. Q. Liu, A. Drutskoy, U. Tamponi, A.E. Bondar, K. Trabelsi, Kiyoshi Tanida, C. P. Shen, Y. Choi, Z. Doležal, K. T. Kim, R. Gillard, S. K. Choi, Yasuyuki Horii, D. Dutta, H. K. Park, M. Bračko, C. C. Zhang, M. Watanabe, S. Okuno, Bruce Yabsley, D. Cinabro, S. Ogawa, Jung-Hyun Kim, K. Sakai, H. Kichimi, T. Tsuboyama, M. Nayak, H. Sahoo, T. Uglov, Y. Li, T. Iwashita, A. Bala, S. Sandilya, and A. Bozek
Subjects: Physics, Particle physics, KEKB, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, General Physics and Astronomy, 010306 general physics, 01 natural sciences
Abstract: We report measurements of $B\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c1}\ensuremath{\gamma}K$ and ${\ensuremath{\chi}}_{c2}\ensuremath{\gamma}K$ decays using $772\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ events collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. Evidence of a new resonance in the ${\ensuremath{\chi}}_{c1}\ensuremath{\gamma}$ final state is found with a statistical significance of $3.8\ensuremath{\sigma}$. This state has a mass of $3823.1\ifmmode\pm\else\textpm\fi{}1.8(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.7(\mathrm{syst})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$, a value that is consistent with theoretical expectations for the previously unseen $1^{3}D_{2}$ $c\overline{c}$ meson. We find no other narrow resonance and set upper limits on the branching fractions of the $X(3872)\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c1}\ensuremath{\gamma}$ and ${\ensuremath{\chi}}_{c2}\ensuremath{\gamma}$ decays.
Published: 2013

240. Search for bottomonium states in exclusive radiative Υ(2S) decays

Author: S, Sandilya, K, Trabelsi, G B, Mohanty, I, Adachi, H, Aihara, D M, Asner, T, Aushev, T, Aziz, A M, Bakich, A, Bala, V, Bhardwaj, B, Bhuyan, A, Bondar, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, P, Chen, B G, Cheon, K, Chilikin, R, Chistov, K, Cho, V, Chobanova, S-K, Choi, Y, Choi, D, Cinabro, J, Dalseno, J, Dingfelder, Z, Doležal, A, Drutskoy, D, Dutta, S, Eidelman, H, Farhat, J E, Fast, M, Feindt, T, Ferber, A, Frey, V, Gaur, N, Gabyshev, S, Ganguly, R, Gillard, Y M, Goh, B, Golob, J, Haba, T, Hara, K, Hayasaka, H, Hayashii, Y, Hoshi, W-S, Hou, Y B, Hsiung, H J, Hyun, T, Iijima, A, Ishikawa, R, Itoh, Y, Iwasaki, T, Julius, D H, Kah, J H, Kang, E, Kato, H, Kawai, T, Kawasaki, C, Kiesling, D Y, Kim, H O, Kim, J B, Kim, J H, Kim, Y J, Kim, J, Klucar, B R, Ko, P, Kodyš, S, Korpar, P, Križan, P, Krokovny, T, Kumita, A, Kuzmin, Y-J, Kwon, J S, Lange, S-H, Lee, J, Li, Y, Li, J, Libby, Z Q, Liu, D, Liventsev, P, Lukin, J, MacNaughton, D, Matvienko, K, Miyabayashi, H, Miyata, R, Mizuk, A, Moll, N, Muramatsu, R, Mussa, Y, Nagasaka, M, Nakao, M, Nayak, C, Ng, N K, Nisar, S, Nishida, O, Nitoh, S, Ogawa, S, Okuno, C, Oswald, G, Pakhlova, C W, Park, H, Park, H K, Park, T K, Pedlar, R, Pestotnik, M, Petrič, L E, Piilonen, M, Ritter, M, Röhrken, A, Rostomyan, S, Ryu, H, Sahoo, T, Saito, K, Sakai, Y, Sakai, L, Santelj, T, Sanuki, Y, Sato, V, Savinov, O, Schneider, G, Schnell, D, Semmler, K, Senyo, M E, Sevior, M, Shapkin, C P, Shen, T-A, Shibata, J-G, Shiu, B, Shwartz, A, Sibidanov, F, Simon, Y-S, Sohn, A, Sokolov, E, Solovieva, S, Stanič, M, Starič, M, Steder, T, Sumiyoshi, U, Tamponi, K, Tanida, G, Tatishvili, Y, Teramoto, T, Tsuboyama, M, Uchida, S, Uehara, T, Uglov, Y, Unno, S, Uno, P, Urquijo, S E, Vahsen, C, Van Hulse, P, Vanhoefer, G, Varner, V, Vorobyev, M N, Wagner, C H, Wang, M-Z, Wang, P, Wang, X L, Wang, M, Watanabe, Y, Watanabe, J, Wiechczynski, K M, Williams, E, Won, B D, Yabsley, J, Yamaoka, Y, Yamashita, S, Yashchenko, C Z, Yuan, Y, Yusa, C C, Zhang, Z P, Zhang, V, Zhilich, and A, Zupanc
Subjects: Models, Theoretical, Elementary Particle Interactions, Monte Carlo Method, Nuclear Physics
Abstract: We search for bottomonium states in Υ(2S) → (bb)γ decays with an integrated luminosity of 24.7 fb(-1) recorded at the Υ(2S) resonance with the Belle detector at KEK, containing (157.8±3.6)×10(6) Υ(2S) events. The (bb) system is reconstructed in 26 exclusive hadronic final states composed of charged pions, kaons, protons, and K(S)(0) mesons. We find no evidence for the state recently observed around 9975 MeV (X(bb)) in an analysis based on a data sample of 9.3×10(6) Υ(2S) events collected with the CLEO III detector. We set a 90% confidence level upper limit on the branching fraction B[Υ(2S) → X(bb)γ] × ∑(i)B[X(bb) → h(i)]4.9×10(-6), summed over the exclusive hadronic final states employed in our analysis. This result is an order of magnitude smaller than the measurement reported with CLEO data. We also set an upper limit for the ηb(1S) state of B[Υ(2S) → ηb(1S)γ] × ∑(i)B[ηb(1S) → h(i)]3.7×10(-6).
Published: 2013

241. Study ofe+e−→π+π−J/ψand Observation of a Charged Charmoniumlike State at Belle

Author: Mikhail Danilov, M. Röhrken, M. Starič, M. Bračko, R. Mussa, K. T. Kim, R. Gillard, A. Ishikawa, G. Bonvicini, M. J. Kim, J. S. Lange, Torben Ferber, D. Cinabro, M. Nakao, B.A. Shwartz, S. K. Choi, Yongsun Kim, Z. Natkaniec, S. Uno, T. Tsuboyama, M. Nayak, C. Schwanda, P. Križan, K. Dutta, Leo Piilonen, M. E. Sevior, W. Ostrowicz, J. Haba, K. Miyabayashi, T. E. Browder, P. Krokovny, Yasuyuki Horii, V. Gaur, C. C. Zhang, O. Seon, Frank Simon, K. Belous, R. Pestotnik, N. Gabyshev, P. Chang, E. Nedelkovska, Andrey Sokolov, A.E. Bondar, M. Steder, M. Watanabe, S. Korpar, Jolanta Brodzicka, S. E. Vahsen, A. Bozek, Kiyoshi Tanida, K. Cho, Jung-Hyun Kim, M. Sumihama, Y. Li, T. Aushev, V. Zhilich, M. Uchida, J. H. Kang, D. A. Epifanov, Marko Petrič, Yukinori Sato, Y. Choi, Z. Doležal, X. L. Wang, S. H. Lee, J. G. Shiu, G. Schnell, Y. Iwasaki, H. J. Hyun, P. Smerkol, Y. Onuki, K. Senyo, James E. Fast, A.L. Sibidanov, V. Chobanova, J. Dalseno, J. Li, J. Libby, Y. Yamashita, H. Nakazawa, P. Lukin, B. R. Ko, A. Chen, O. Schneider, A. Zupanc, Y. Yook, Z. Q. Liu, D. Santel, J. Yamaoka, G. Varner, V.M. Aulchenko, M. Ritter, B. G. Cheon, Y. Sakai, Y. Hoshi, H. J. Kim, A. Bala, Kevin Varvell, Semen Eidelman, D. Matvienko, Y. J. Kwon, T. K. Pedlar, A. Moll, Z. Drásal, R. Itoh, Y. Teramoto, Y. Watanabe, P. Wang, M. N. Wagner, O. Nitoh, T. Sumiyoshi, C. Kiesling, V. Chekelian, D. Dutta, H. K. Park, A. Drutskoy, E. Nakano, T. Kuhr, D. M. Asner, D. Semmler, H. Farhat, G. Tatishvili, S. Okuno, Z. P. Zhang, B. Golob, C. Van Hulse, E. Solovieva, K. Trabelsi, Hiroaki Aihara, C. Z. Yuan, C. P. Shen, S. Sandilya, T. Sanuki, G. Pakhlova, Bruce Yabsley, Y. S. Sohn, C. Oswald, T. Kawasaki, C. X. Liu, S. Yashchenko, Yoshinobu Unno, T. Julius, Po-Hsun Chen, R. Chistov, T. Saito, R. Seidl, Peter Kodys, M. Shapkin, E. Won, H. Sahoo, T. Uglov, Toru Iijima, S. Uehara, S. Ogawa, P. Pakhlov, H. Park, I. Adachi, J. B. Kim, B. Bhuyan, J. Klucar, A. M. Bakich, V. Savinov, C. H. Wang, S. Nishida, A. Rostomyan, W. S. Hou, V. Bhardwaj, M. Z. Wang, K. Kinoshita, U. Tamponi, Tariq Aziz, N. K. Nisar, A. Frey, Y. M. Goh, G. B. Mohanty, S. Ganguly, R. Mizuk, Y. Yusa, D. Joffe, P. Vanhoefer, V. Vorobyev, H. Hayashii, K. Inami, T. A. Shibata, H. Miyata, M. Bischofberger, K. Hayasaka, M. Feindt, S. L. Olsen, D. H. Kah, and Y. B. Hsiung
Subjects: Physics, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, Dalitz plot, Resonance, 01 natural sciences, Nuclear physics, 0103 physical sciences, Mass spectrum, Tetraquark, Z(4430), Atomic physics, 010306 general physics, Zc(3900), X(3872)
Abstract: The cross section for ee+ e- → π+ π- J/ψ between 3.8 and 5.5 GeV is measured with a 967 fb(-1) data sample collected by the Belle detector at or near the Υ(nS) (n = 1,2,…,5) resonances. The Y(4260) state is observed, and its resonance parameters are determined. In addition, an excess of π+ π- J/ψ production around 4 GeV is observed. This feature can be described by a Breit-Wigner parametrization with properties that are consistent with the Y(4008) state that was previously reported by Belle. In a study of Y(4260) → π+ π- J/ψ decays, a structure is observed in the M(π(±)J/ψ) mass spectrum with 5.2σ significance, with mass M = (3894.5 ± 6.6 ± 4.5) MeV/c2 and width Γ = (63 ± 24 ± 26) MeV/c2, where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmoniumlike state.
Published: 2013

242. Search for anH-Dibaryon with a Mass near2mΛinΥ(1S)andΥ(2S)Decays

Author: A. Ishikawa, A. Bay, P. Križan, C. Ng, Marko Petrič, K. Belous, H. Kichimi, S. Korpar, H. J. Hyun, P. Smerkol, P. Pakhlov, Andrey Sokolov, Yang Li, V.N. Zhilich, J. H. Kang, K. Nishimura, Y. Choi, D. Matvienko, James E. Fast, V. Gaur, N. K. Nisar, H. Sahoo, J. Libby, J. G. Shiu, J. Dalseno, M. Ritter, K. T. Kim, K. Miyabayashi, K. Trabelsi, K. Senyo, T. Ohshima, D. Epifanov, B. R. Ko, C. P. Shen, E. Nedelkovska, H. Park, A. Bozek, M. J. Kim, R. Gillard, B. G. Cheon, Y. M. Goh, S. K. Choi, G. Schnell, T. Sumiyoshi, Sang Hoon Lee, O. Seon, J. Li, M. Nakao, Bumho Kim, T. Uglov, B.A. Shwartz, H. K. Park, Y. Yamashita, Frank Simon, K. M. Williams, M. Uchida, P. Kapusta, S. Okuno, V. Chobanova, D. Liventsev, A. Chen, X. R. Li, A. Moll, M. Starič, T. Sanuki, S. Uehara, D. Semmler, M. Shapkin, M. E. Sevior, E. Kato, M. Sumihama, T. Kumita, K. Chilikin, Y. Teramoto, M. Bračko, G. S. Varner, G. Bonvicini, S. Nishida, D. Cinabro, M. D. Peters, Peter Kodys, J. S. Lange, S. Ganguly, Y. Sakai, P. Krokovny, R. Itoh, U. Tamponi, V.M. Aulchenko, K. Cho, Samo Stanič, Norihito Muramatsu, S. K. Kim, P. Wang, Jung-Hyun Kim, I. S. Cho, M. N. Wagner, Y. Iwasaki, Kiyoshi Tanida, G. B. Mohanty, Y. J. Kwon, E. Solovieva, Y. Watanabe, K. Inami, L. E. Piilonen, S. L. Olsen, Yongsun Kim, I. Adachi, O. Schneider, G. Pakhlova, C. H. Wang, D. H. Kah, Z. Doležal, Y. Usov, R. Mizuk, S. Uno, C. Schwanda, A.S. Kuzmin, W. S. Hou, T. Julius, Yoshinobu Unno, Y. B. Hsiung, R. Chistov, Hiroaki Aihara, T. A. Shibata, H. Miyata, Y. Hoshi, B. Bhuyan, S.I. Eidelman, V. Vorobyev, H. Hayashii, H. O. Kim, T. E. Browder, K. Hayasaka, J. Klucar, K. Kinoshita, V. Savinov, Sunmin Ryu, V.E. Shebalin, E. Won, E. Nakano, C. Van Hulse, D. M. Asner, G. Tatishvili, V. Chekelian, S. Esen, Anze Zupanc, H. Farhat, S. Sandilya, Y. S. Sohn, A. J. Schwartz, H. J. Kim, Richard T. Kouzes, and R. Mussa
Subjects: Physics, Nuclear physics, Particle physics, KEKB, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, General Physics and Astronomy, 010306 general physics, Lambda, 01 natural sciences
Abstract: We report the results of a high-statistics search for $H$ dibaryon production in inclusive $\ensuremath{\Upsilon}(1S)$ and $\ensuremath{\Upsilon}(2S)$ decays. No indication of an $H$ dibaryon with a mass near the ${M}_{H}=2{m}_{\ensuremath{\Lambda}}$ threshold is seen in either the $H\ensuremath{\rightarrow}\ensuremath{\Lambda}p{\ensuremath{\pi}}^{\ensuremath{-}}$ or $\ensuremath{\Lambda}\ensuremath{\Lambda}$ decay channels and 90% confidence level branching-fraction upper limits are set that are between one and two orders of magnitude below the measured branching fractions for inclusive $\ensuremath{\Upsilon}(1S)$ and $\ensuremath{\Upsilon}(2S)$ decays to antideuterons. Since $\ensuremath{\Upsilon}(1S,2S)$ decays produce flavor-$SU(3)$-symmetric final states, these results put stringent constraints on $H$ dibaryon properties. The results are based on analyses of 102 million $\ensuremath{\Upsilon}(1S)$ and 158 million $\ensuremath{\Upsilon}(2S)$ events collected with the Belle detector at the KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider.
Published: 2013

243. Evidence for the decayB0→K+K−π0

Author: Torben Ferber, Yongsun Kim, G. Bonvicini, S. Uno, C. Schwanda, K. Dutta, Yukinori Sato, J. G. Shiu, H. Farhat, V. Chekelian, D. M. Asner, G. Schnell, I. Adachi, J. Dalseno, B. Golob, G. Tatishvili, M. Shapkin, W. S. Hou, V. Bhardwaj, K. Kinoshita, M. Uchida, U. Tamponi, Rakesh Kumar, S. Okuno, J. B. Kim, M. Ritter, A. M. Bakich, K. Cho, B. Bhuyan, Andrey Sokolov, A. Frey, J. H. Kang, M. J. Kim, V. Chobanova, T. A. Shibata, H. Miyata, M. Sumihama, J. Klucar, A.L. Sibidanov, K. Senyo, A. Bozek, Y. S. Sohn, S. Ogawa, D. Liventsev, Bruce Yabsley, P. Lukin, B. R. Ko, V. Savinov, D. Dutta, R. Sinha, G. Varner, Norihito Muramatsu, A. Drutskoy, T. Kumita, Marko Petrič, H. Hayashii, H. J. Hyun, Y. Hoshi, P. Smerkol, Semen Eidelman, P. Vanhoefer, C. H. Wang, R. Mussa, Y. Onuki, H. K. Park, Leo Piilonen, T. E. Browder, T. Sumiyoshi, Toru Iijima, B. G. Cheon, Y. Yamashita, A. Ishikawa, J. Haba, M. Steder, D. Matvienko, T. K. Pedlar, M. Nakao, S. E. Vahsen, P. Pakhlov, C. P. Shen, T. Sanuki, R. Itoh, D. Cinabro, H. Sahoo, P. Wang, M. N. Wagner, G. Pakhlova, M. E. Sevior, P. Križan, T. Uglov, K. Belous, S. Korpar, K. Miyabayashi, V.M. Aulchenko, M. Feindt, W. Ostrowicz, T. Aushev, H. Park, V. Zhilich, M. Bračko, S. Uehara, S. Yashchenko, P. Chang, T. Julius, O. Seon, Frank Simon, E. Nedelkovska, Po-Hsun Chen, V. Vorobyev, R. Chistov, Y. Iwasaki, Jung-Hyun Kim, S. Nishida, M. Watanabe, J. Li, T. Tsuboyama, D. H. Kah, D. Santel, M. Nayak, D. Semmler, M. Starič, A. Rostomyan, O. Schneider, E. Nakano, H. J. Kim, Chang Liu, C. Van Hulse, J. S. Lange, S. Ganguly, T. Kawasaki, Y. Teramoto, Jasvinder A. Singh, E. Solovieva, S. H. Lee, A. Zupanc, Kevin Varvell, Y. Sakai, Y. Watanabe, A. Bala, V. Gaur, Y. Li, T. Saito, S. Sandilya, Peter Kodys, E. Won, Yoshinobu Unno, C. Kiesling, Y. J. Kwon, N. Gabyshev, Tariq Aziz, K. M. Williams, N. K. Nisar, A. Chen, Y. M. Goh, G. B. Mohanty, Y. Yusa, Mikhail Danilov, O. Nitoh, M. Röhrken, Hiroaki Aihara, K. T. Kim, R. Gillard, S. K. Choi, Yasuyuki Horii, Y. Choi, Z. Doležal, X. L. Wang, R. Pestotnik, Z. Drásal, and J. Libby
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, Resonance, 01 natural sciences, law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, B meson, 010306 general physics, Collider, Bar (unit)
Abstract: We report a search for charmless hadronic decays of neutral B mesons to the final state K+K-pi(0). The results are based on a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar pairs, and was collected at the (sic)(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We find the first evidence for this decay with a significance of 3.5 standard deviations and measure its branching fraction as B(B-0 -> K+K-pi(0)) = [2.17 +/- 0.60(stat) +/- 0.24(syst) x 10(-6).
Published: 2013

244. Measurement of the inclusive semileptonic branching fractionB(Bs0→X−ℓ+νℓ)at Belle

Author: E. Nakano, A. Drutskoy, B. Bhuyan, T. E. Browder, C. Van Hulse, J. Klucar, H. O. Kim, S. Ogawa, K. Trabelsi, C. P. Shen, G. B. Mohanty, D. Cinabro, M. Uchida, P. Chang, R. Mizuk, O. Nitoh, V. Chobanova, D. Liventsev, T. Aushev, B. Golob, Z. P. Zhang, B.A. Shwartz, G. Tatishvili, Z. Q. Liu, C. Kiesling, G. S. Varner, C. C. Zhang, M. Bračko, K. Prothmann, R. Itoh, P. Wang, S. Ganguly, M. Watanabe, J. Li, A.L. Sibidanov, Richard T. Kouzes, S. Nishida, W. Ostrowicz, S. Okuno, G. Schnell, T. Iijima, Kevin Varvell, Y. Sakai, V. Chekelian, H. Farhat, Z. Drásal, Y. Iwasaki, Andrey Sokolov, Y. J. Kwon, L. E. Piilonen, H. Aihara, W. S. Hou, G. Pakhlova, T. Nozaki, S. Esen, T. Kuhr, Byung Gu Cheon, O. Schneider, M. E. Sevior, K. Belous, C. Liu, P. Pakhlov, C. H. Wang, A.E. Bondar, G. Bonvicini, Anze Zupanc, S. Korpar, J. H. Kang, Y. Teramoto, D. Dutta, C. Oswald, V. Gaur, Norihito Muramatsu, Yang Li, T. Kawasaki, Y. Choi, B. Kronenbitter, M. Nakao, K. Senyo, H. Hayashii, Z. Doležal, R. Louvot, Po-Hsun Chen, N. K. Nisar, L. Santelj, H. J. Kim, H. Park, Marko Petrič, A. Bozek, Yukinori Sato, Sunmin Ryu, E. Won, Jochen Dingfelder, P. Krokovny, H. J. Hyun, P. Smerkol, R. Chistov, Y. Unno, H. Sahoo, Y. Watanabe, J. G. Shiu, K. T. Kim, M. J. Kim, J. Dalseno, R. Gillard, E. Solovieva, T. Uglov, H. K. Park, K. Cho, Y. Yamashita, M. Z. Wang, K. Kinoshita, H. Yamamoto, M. Starič, P. Vanhoefer, S. K. Choi, Phillip Urquijo, S. Uehara, Y. S. Sohn, Y. M. Goh, V.N. Zhilich, J. Libby, T. Kumita, M. Ritter, D. Matvienko, James E. Fast, B. R. Ko, I. Adachi, T. Sumiyoshi, D. M. Asner, J. B. Kim, Sang Hoon Lee, T. K. Pedlar, T. Sanuki, K. M. Williams, A. Chen, E. Kato, K. Miyabayashi, T. Tsuboyama, A. Moll, S. Sandilya, Yueh-Feng Liu, M. Shapkin, Yasushi Nagasaka, E. Nedelkovska, M. Röhrken, K. Chilikin, M. T. Prim, V. Bhardwaj, R. Pestotnik, O. Seon, Frank Simon, A. J. Schwartz, J. Haba, O. Lutz, M. Rozanska, A. Ishikawa, P. Križan, T. A. Shibata, H. Miyata, Y. Hoshi, S.I. Eidelman, K. Hayasaka, Yasuyuki Horii, S. L. Olsen, D. H. Kah, A. M. Bakich, T. Ohshima, N. Gabyshev, K. Arinstein, Yongsun Kim, T. Saito, S. Uno, and C. Schwanda
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Branching (polymer chemistry), 01 natural sciences, Nuclear physics, KEKB, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: We report a measurement of the inclusive semileptonic B0s branching fraction in a 121 fb⁻¹ data sample collected near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric energy e⁺e⁻ collider. Events containing B⁰(*)sB¯¯¯⁰(*)s pairs are selected by reconstructing a tag side D⁺s and identifying a signal side lepton l⁺ (l=e, μ) that is required to have the same-sign charge to ensure that both originate from different B⁰s mesons. The B⁰s→X⁻l⁺νl branching fraction is extracted from the ratio of the measured yields of D⁺s mesons and D⁺sl⁺ pairs and the known production and branching fractions. The inclusive semileptonic branching fraction is measured to be [10.6±0.5(stat)±0.7(syst)]%.
Published: 2013

245. Search for heavy neutrinos at Belle

Author: H. K. Park, Kevin Varvell, Z. Drásal, Y. Watanabe, Pavel Krokovny, Y. Usov, A. Drutskoy, C. P. Shen, M. J. Kim, Y. Li, Marko Petrič, V. Zhilich, J. Li, H. J. Hyun, P. Smerkol, T. Kumita, E. Nakano, T. Julius, T. E. Browder, B. G. Cheon, R. Chistov, B. R. Ko, D. Matvienko, S. Uehara, S. Sandilya, C. Van Hulse, O. Nitoh, S. Nishida, S. Okuno, Samo Korpar, H. Farhat, Y. Iwasaki, G. Bonvicini, D. M. Asner, H. Miyata, G. Tatishvili, D. Dutta, B. Golob, Z. Natkaniec, T. Ohshima, O. Schneider, V. Gaur, M. Bračko, Meng Wang, M. Shapkin, G. Schnell, K. M. Williams, A. Chen, Y. Unno, D. Cinabro, K. Hayasaka, G. B. Mohanty, A.S. Kuzmin, S. Esen, C. C. Zhang, N. Gabyshev, Yukinori Sato, K. Cho, M. Watanabe, M. Röhrken, R. Mizuk, B. Bhuyan, T. Kuhr, Norihito Muramatsu, H. Hayashii, Y. S. Sohn, V. Chekelian, K. Senyo, H. O. Kim, J. Dalseno, J. Klucar, D. Epifanov, P. Chang, Rakesh Kumar, S. Ganguly, Toru Iijima, K. Itagaki, T. Tsuboyama, R. Pestotnik, S. L. Olsen, C. H. Wang, Yasushi Nagasaka, J. B. Kim, P. Pakhlov, T. K. Pedlar, A. Moll, M. Ritter, T. A. Shibata, W. S. Hou, I. Adachi, D. Santel, H. Park, D. H. Kah, B.A. Shwartz, A. Bozek, M. Sumihama, Hiroaki Aihara, K. Prothmann, Y. Ushiroda, E. Kato, A. M. Bakich, Y. J. Kwon, K. Miyabayashi, Andrey Sokolov, V. Vorobyev, Tagir Aushev, T. Sumiyoshi, N. K. Nisar, L. Santelj, C. Kiesling, Bruce Yabsley, Y. M. Goh, K. Belous, Chang Liu, M. E. Sevior, J. H. Kang, Y. Yamashita, S. Uno, V.M. Aulchenko, Yueh-Feng Liu, W. Ostrowicz, J. Libby, Sunmin Ryu, M. Starič, J. G. Shiu, James E. Fast, J. Haba, Hitoshi Yamamoto, P. Vanhoefer, Semen Eidelman, Yongsun Kim, C. Schwanda, T. Saito, A.E. Bondar, R. Louvot, Y. Choi, Z. Doležal, Zhenyu Zhang, K. T. Kim, R. Gillard, S. K. Choi, Yasuyuki Horii, Z. Q. Liu, A.L. Sibidanov, E. Won, V. Chobanova, G. Varner, D. Liventsev, K. Arinstein, Y. Hoshi, S. H. Lee, R. Itoh, P. Wang, M. N. Wagner, Y. Sakai, C. Oswald, T. Kawasaki, H. J. Kim, A. Ishikawa, A. Bay, T. Nozaki, M. Nakao, Y. Teramoto, P. Križan, E. Solovieva, Leo Piilonen, O. Seon, Frank Simon, H. Sahoo, T. Uglov, Richard T. Kouzes, S. Ogawa, M. Uchida, G. Pakhlova, and A. Zupanc
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, Electron–positron annihilation, High Energy Physics::Phenomenology, FOS: Physical sciences, Resonance, High Energy Physics - Experiment, law.invention, Standard Model, Nuclear physics, High Energy Physics - Experiment (hep-ex), KEKB, law, High Energy Physics::Experiment, Neutrino, Collider, Lepton
Abstract: We report on a search for heavy neutrinos in B-meson decays. The results are obtained using a data sample that contains 772x10^6 BB-bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. No signal is observed and upper limits are set on mixing of heavy neutrinos with left-handed neutrinos of the Standard Model in the mass range 0.5 - 5.0 GeV/c^2., Comment: 12 pages, 5 figures, published in PRD (RC); Erratum: 2 pages, 3 figures; upper limit calculation revised
Published: 2013

246. Study of e+ e- → π+ π- J/ψ and observation of a charged charmoniumlike state at Belle

Author: Z Q, Liu, C P, Shen, C Z, Yuan, I, Adachi, H, Aihara, D M, Asner, V, Aulchenko, T, Aushev, T, Aziz, A M, Bakich, A, Bala, K, Belous, V, Bhardwaj, B, Bhuyan, M, Bischofberger, A, Bondar, G, Bonvicini, A, Bozek, M, Bračko, J, Brodzicka, T E, Browder, P, Chang, V, Chekelian, A, Chen, P, Chen, B G, Cheon, R, Chistov, K, Cho, V, Chobanova, S-K, Choi, Y, Choi, D, Cinabro, J, Dalseno, M, Danilov, Z, Doležal, Z, Drásal, A, Drutskoy, D, Dutta, K, Dutta, S, Eidelman, D, Epifanov, H, Farhat, J E, Fast, M, Feindt, T, Ferber, A, Frey, V, Gaur, N, Gabyshev, S, Ganguly, R, Gillard, Y M, Goh, B, Golob, J, Haba, K, Hayasaka, H, Hayashii, Y, Horii, Y, Hoshi, W-S, Hou, Y B, Hsiung, H J, Hyun, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, Y, Iwasaki, D, Joffe, T, Julius, D H, Kah, J H, Kang, T, Kawasaki, C, Kiesling, H J, Kim, J B, Kim, J H, Kim, K T, Kim, M J, Kim, Y J, Kim, K, Kinoshita, J, Klucar, B R, Ko, P, Kodyš, S, Korpar, P, Križan, P, Krokovny, T, Kuhr, Y-J, Kwon, J S, Lange, S-H, Lee, J, Li, Y, Li, J, Libby, C, Liu, P, Lukin, D, Matvienko, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, A, Moll, R, Mussa, E, Nakano, M, Nakao, H, Nakazawa, Z, Natkaniec, M, Nayak, E, Nedelkovska, N K, Nisar, S, Nishida, O, Nitoh, S, Ogawa, S, Okuno, S L, Olsen, Y, Onuki, W, Ostrowicz, C, Oswald, P, Pakhlov, G, Pakhlova, H, Park, H K, Park, T K, Pedlar, R, Pestotnik, M, Petrič, L E, Piilonen, M, Ritter, M, Röhrken, A, Rostomyan, H, Sahoo, T, Saito, Y, Sakai, S, Sandilya, D, Santel, T, Sanuki, Y, Sato, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, R, Seidl, D, Semmler, K, Senyo, O, Seon, M E, Sevior, M, Shapkin, T-A, Shibata, J-G, Shiu, B, Shwartz, A, Sibidanov, F, Simon, P, Smerkol, Y-S, Sohn, A, Sokolov, E, Solovieva, M, Starič, M, Steder, M, Sumihama, T, Sumiyoshi, U, Tamponi, K, Tanida, G, Tatishvili, Y, Teramoto, K, Trabelsi, T, Tsuboyama, M, Uchida, S, Uehara, T, Uglov, Y, Unno, S, Uno, S E, Vahsen, C, Van Hulse, P, Vanhoefer, G, Varner, K E, Varvell, V, Vorobyev, M N, Wagner, C H, Wang, M-Z, Wang, P, Wang, X L, Wang, M, Watanabe, Y, Watanabe, E, Won, B D, Yabsley, J, Yamaoka, Y, Yamashita, S, Yashchenko, Y, Yook, Y, Yusa, C C, Zhang, Z P, Zhang, V, Zhilich, and A, Zupanc
Abstract: The cross section for ee+ e- → π+ π- J/ψ between 3.8 and 5.5 GeV is measured with a 967 fb(-1) data sample collected by the Belle detector at or near the Υ(nS) (n = 1,2,…,5) resonances. The Y(4260) state is observed, and its resonance parameters are determined. In addition, an excess of π+ π- J/ψ production around 4 GeV is observed. This feature can be described by a Breit-Wigner parametrization with properties that are consistent with the Y(4008) state that was previously reported by Belle. In a study of Y(4260) → π+ π- J/ψ decays, a structure is observed in the M(π(±)J/ψ) mass spectrum with 5.2σ significance, with mass M = (3894.5 ± 6.6 ± 4.5) MeV/c2 and width Γ = (63 ± 24 ± 26) MeV/c2, where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmoniumlike state.
Published: 2013

247. Evidence forB−→τ−ν¯τwith a Hadronic Tagging Method Using the Full Data Sample of Belle

Author: D. M. Asner, Yukinori Sato, G. Tatishvili, B. R. Ko, Y. Iwasaki, J. Dalseno, S. Nishida, S. H. Lee, Phillip Urquijo, T. A. Shibata, S. Uno, Sunmin Ryu, O. Schneider, H. Hayashii, S. Esen, A.S. Kuzmin, Y. Sakai, D. Cinabro, Anze Zupanc, Hitoshi Yamamoto, P. Vanhoefer, Pavel Krokovny, Y. Teramoto, D. Liventsev, Marko Petrič, Jung-Hyun Kim, P. Smerkol, A. Drutskoy, G. Schnell, E. Solovieva, Leo Piilonen, O. Seon, Frank Simon, K. Miyabayashi, M. Barrett, B. Bhuyan, R. Itoh, K. Trabelsi, B. G. Cheon, D. Matvienko, V. Vorobyev, M. J. Kim, S. Uehara, T. Iwashita, P. Wang, T. Kuhr, J. Klucar, I. S. Cho, E. Nakano, Y. S. Sohn, Takuya Higuchi, C. Van Hulse, B. Golob, A. Ishikawa, A.L. Sibidanov, V. Gaur, M. Shapkin, M. N. Wagner, B. Shwartz, S. Okuno, Samo Korpar, C. P. Shen, K. Hara, H. Farhat, P. Pakhlov, Bruce Yabsley, T. Kumita, T. E. Browder, O. Nitoh, K. Inami, T. Nozaki, M. Nakao, J. S. Lange, S. Ganguly, V. Zhilich, C. W. Park, P. Križan, J. Libby, I. Adachi, Jochen Dingfelder, A. Bozek, C. H. Wang, Kevin Varvell, J. Li, D. Dutta, H. K. Park, D. Santel, G. Varner, Y. Hoshi, A. M. Bakich, C. Oswald, T. Kawasaki, M. T. Prim, Hiroaki Aihara, T. Mori, Y. Usov, K. M. Williams, T. Julius, Po-Hsun Chen, A. Chen, Y. Unno, S. Sandilya, Norihito Muramatsu, M. Z. Wang, K. Kinoshita, J. Haba, Toru Iijima, T. Sumiyoshi, Z. P. Zhang, M. Röhrken, K. Chilikin, H. O. Kim, H. Nakazawa, V. Bhardwaj, H. Ozaki, T. Sanuki, Yongsun Kim, A. J. Schwartz, V. Chekelian, Peter Kodys, Richard T. Kouzes, Tariq Aziz, C. Schwanda, Yang Li, R. Pestotnik, Chang Liu, E. Won, N. K. Nisar, Z. Drásal, T. Hara, A. Frey, K. Sakai, M. Uchida, H. Sahoo, G. Pakhlova, Y. M. Goh, T. Tsuboyama, M. Nayak, G. B. Mohanty, M. Watanabe, R. Mizuk, Y. Yusa, Vladimir Zhulanov, M. E. Sevior, Andrey Sokolov, B. Kronenbitter, J. H. Kang, K. Nishimura, D. Epifanov, T. K. Pedlar, A. Moll, Semen Eidelman, G. Bonvicini, K. Cho, K. T. Kim, R. Gillard, C. Ng, K. Senyo, Yasuyuki Horii, A.E. Bondar, Y. Choi, Z. Doležal, Z. Q. Liu, M. Starič, Y. Watanabe, H. Miyata, J. G. Shiu, K. Hayasaka, S. L. Olsen, M. Sumihama, Y. Ushiroda, Tagir Aushev, Y. Yamashita, Yueh-Feng Liu, Z. Natkaniec, T. Ohshima, N. Gabyshev, C. Kiesling, M. Bračko, J. B. Kim, and Y. J. Kwon
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, 01 natural sciences, Measure (mathematics), law.invention, Nuclear physics, KEKB, Recoil, law, 0103 physical sciences, B meson, 010306 general physics, Collider
Abstract: We measure the branching fraction of B- → τ- ν(τ) using the full Υ(4S) data sample containing 772×10(6) BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. Events with BB pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B- → τ- ν(τ) candidates are detected in the recoil. We find evidence for B- → τ- ν(τ) with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B- → τ- ν(τ))=[0.72(-0.25)(+0.27)(stat)±0.11(syst)]×10(-4).
Published: 2013

248. Observation ofψ(4040)andψ(4160)decay intoηJ/ψ

Author: J. H. Kang, J. Libby, Kiyoshi Tanida, H. Sahoo, S. Ogawa, James E. Fast, Z. Doležal, O. Nitoh, V. Gaur, Tariq Aziz, B. Golob, K. Trabelsi, C. P. Shen, O. Schneider, X. L. Wang, V.N. Zhilich, Marko Petrič, J. S. Lange, Hiroaki Aihara, P. Lukin, B. R. Ko, M. Nakao, Y. Choi, Chang-Zheng Yuan, O. Brovchenko, H. J. Hyun, P. Smerkol, Jingxu Wang, T. Aushev, S. McOnie, T. K. Pedlar, A. Moll, R. Mussa, W. S. Hou, M. Uchida, J. Li, Y. M. Goh, A. Ishikawa, P. Kapusta, Peter Kodys, S. Okuno, R. Gillard, M. J. Kim, G. B. Mohanty, S. Sandilya, H. J. Kim, M. Starič, P. Križan, D. M. Asner, G. S. Varner, S. K. Choi, G. Bonvicini, Y. Ban, E. Won, T. Kumita, Chang Liu, D. Santel, Z. P. Zhang, H. O. Kim, Y. Teramoto, R. Mizuk, A.L. Sibidanov, K. Senyo, P. Wang, G. Tatishvili, P. Krokovny, P. Vanhoefer, Y. L. Han, T. A. Shibata, H. Miyata, Y. Hoshi, S.I. Eidelman, K. Cho, Richard T. Kouzes, H. Farhat, K. Prothmann, Y. Sakai, Z. Q. Liu, C. H. Wang, S. Esen, Yoshinobu Unno, M. Iwabuchi, L. E. Piilonen, Anze Zupanc, M. E. Sevior, G. Pakhlova, A. M. Bakich, E. Solovieva, T. Ohshima, Y. Usov, Y. S. Sohn, Jung-Hyun Kim, S. L. Olsen, C. C. Zhang, H. Park, Po-Hsun Chen, A. Bozek, V.M. Aulchenko, Y. Yamashita, Frank Simon, T. Sumiyoshi, S. Nishida, Samo Stanič, Sang Hoon Lee, T. Sanuki, M. Bračko, Yongsun Kim, B. Bhuyan, T. E. Browder, S. Uno, J. Klucar, C. Schwanda, Jolanta Brodzicka, J. G. Shiu, J. Dalseno, H. Hayashii, K. Inami, M. Z. Wang, K. Kinoshita, M. Shapkin, R. Pestotnik, B. G. Cheon, K. M. Williams, Z. Drásal, Norihito Muramatsu, I. Adachi, J. B. Kim, and S. Uehara
Subjects: Combinatorics, Physics, Nuclear and High Energy Physics, Particle physics, KEKB, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Hadron, High Energy Physics::Experiment, Production (computer science), 010306 general physics, 01 natural sciences
Abstract: The cross section for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\eta}J/\ensuremath{\psi}$ between $\sqrt{s}=3.8\text{ }\text{ }\mathrm{GeV}$ and 5.3 GeV is measured via initial state radiation using $980\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data on and around the $\ensuremath{\Upsilon}(nS)(n=1,2,3,4,5)$ resonances collected with the Belle detector at KEKB. Two resonant structures at the $\ensuremath{\psi}(4040)$ and $\ensuremath{\psi}(4160)$ are observed in the $\ensuremath{\eta}J/\ensuremath{\psi}$ invariant mass distribution. Fitting the mass spectrum with the coherent sum of two Breit-Wigner functions, one obtains $\mathcal{B}(\ensuremath{\psi}(4040)\ensuremath{\rightarrow}\ensuremath{\eta}J/\ensuremath{\psi})\ifmmode\cdot\else\textperiodcentered\fi{}{\ensuremath{\Gamma}}_{{e}^{+}{e}^{\ensuremath{-}}}^{\ensuremath{\psi}(4040)}=(4.8\ifmmode\pm\else\textpm\fi{}0.9\ifmmode\pm\else\textpm\fi{}1.5)\text{ }\text{ }\mathrm{eV}$ and $\mathcal{B}(\ensuremath{\psi}(4160)\ensuremath{\rightarrow}\ensuremath{\eta}J/\ensuremath{\psi})\ifmmode\cdot\else\textperiodcentered\fi{}{\ensuremath{\Gamma}}_{{e}^{+}{e}^{\ensuremath{-}}}^{\ensuremath{\psi}(4160)}=(4.0\ifmmode\pm\else\textpm\fi{}0.8\ifmmode\pm\else\textpm\fi{}1.4)\text{ }\text{ }\mathrm{eV}$ for one solution and $\mathcal{B}(\ensuremath{\psi}(4040)\ensuremath{\rightarrow}\ensuremath{\eta}J/\ensuremath{\psi})\ifmmode\cdot\else\textperiodcentered\fi{}{\ensuremath{\Gamma}}_{{e}^{+}{e}^{\ensuremath{-}}}^{\ensuremath{\psi}(4040)}=(11.2\ifmmode\pm\else\textpm\fi{}1.3\ifmmode\pm\else\textpm\fi{}2.1)\text{ }\text{ }\mathrm{eV}$ and $\mathcal{B}(\ensuremath{\psi}(4160)\ensuremath{\rightarrow}\ensuremath{\eta}J/\ensuremath{\psi})\ifmmode\cdot\else\textperiodcentered\fi{}{\ensuremath{\Gamma}}_{{e}^{+}{e}^{\ensuremath{-}}}^{\ensuremath{\psi}(4160)}=(13.8\ifmmode\pm\else\textpm\fi{}1.3\ifmmode\pm\else\textpm\fi{}2.1)\text{ }\text{ }\mathrm{eV}$ for the other solution, where the first errors are statistical and the second are systematic. This is the first measurement of this hadronic transition mode of these two states, and the partial widths to $\ensuremath{\eta}J/\ensuremath{\psi}$ are found to be about 1 MeV. There is no evidence for the $Y(4260)$, $Y(4360)$, $\ensuremath{\psi}(4415)$, or $Y(4660)$ in the $\ensuremath{\eta}J/\ensuremath{\psi}$ final state, and upper limits of their production rates in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation are determined.
Published: 2013

249. Measurements of branching fractions and directCPasymmetries forB→Kπ,B→ππandB→KKdecays

Author: E. Nakano, M. Starič, Leo Piilonen, W. S. Hou, G. Bonvicini, Peter Kodys, J. G. Shiu, V. Zhilich, Frank Simon, P. Kapusta, B Bhuyan, A. Vinokurova, Y. B. Hsiung, O. Schneider, M. Uchida, R. Gillard, E. Won, G. Pakhlova, S. Sandilya, D. M. Asner, H. Miyata, M. Bischofberger, A.S. Kuzmin, V. Chobanova, K. Cho, K. Hayasaka, G. Tatishvili, V. Chekelian, R. Mizuk, Y. Teramoto, Tagir Aushev, H. Sahoo, Hiroaki Aihara, Yasuyuki Horii, Bruce Yabsley, T. Y. Wu, V. Gaur, H. K. Park, M. J. Kim, Y. Yamashita, M. Shapkin, A.E. Bondar, K. Miyabayashi, E. Solovieva, Pavel Krokovny, M. Röhrken, M. Bračko, T. Kumita, T. K. Pedlar, B. Golob, D. Santel, V.M. Aulchenko, Yueh-Feng Liu, Y. Li, T. E. Browder, S. H. Lee, C. Ng, K. Senyo, P. Chang, Tariq Aziz, Anze Zupanc, T. Mori, A. Bozek, Y. Choi, Z. Doležal, K. Trabelsi, T. Kuhr, Y. Sakai, S. Ogawa, Jung-Hyun Kim, C. P. Shen, S. Uno, A.L. Sibidanov, Marko Petrič, Y. S. Sohn, Rakesh Kumar, H. J. Hyun, P. Smerkol, A. Ishikawa, Sunmin Ryu, Y. M. Goh, M. Nakao, Chang Liu, M. Sumihama, B. G. Cheon, P. Križan, G. B. Mohanty, P. Vanhoefer, J. Haba, G. Varner, B. R. Ko, Andrey Sokolov, R. Pestotnik, Samo Korpar, J. Libby, H. Farhat, Y. Chao, Y. Hoshi, J. H. Kang, K. Nishimura, T. Kawasaki, H. J. Kim, Y. J. Kwon, Z. P. Zhang, H. Hayashii, B.A. Shwartz, H. O. Kim, James E. Fast, T. Julius, M. Watanabe, Po-Hsun Chen, Semen Eidelman, M. T. Prim, R. Chistov, V.E. Shebalin, I. S. Cho, T. Ohshima, M. Z. Wang, K. Kinoshita, O. Nitoh, C. H. Wang, D. Dutta, Yongsun Kim, A. Frey, C. Schwanda, Y. T. Duh, Vladimir Zhulanov, M. E. Sevior, K. M. Williams, T. Sumiyoshi, A. Chen, Y. Unno, Norihito Muramatsu, H. Park, Toru Iijima, A. Drutskoy, I. Adachi, A. M. Bakich, S. Uehara, S. Okuno, S. Nishida, Yukinori Sato, M. Ritter, T. A. Shibata, and Stephen Lars Olsen
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Crystallography, KEKB, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, 010306 general physics, 01 natural sciences
Abstract: We report measurements of the branching fractions and direct $CP$ asymmetries (${\mathcal{A}}_{CP}$) for $B\ensuremath{\rightarrow}K\ensuremath{\pi}$, $\ensuremath{\pi}\ensuremath{\pi}$ and $KK$ decays (but not ${\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$) based on the final data sample of $772\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. We set a 90% confidence-level upper limit for ${K}^{+}{K}^{\ensuremath{-}}$ at $2.0\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}7}$; all other decays are observed with branching fractions ranging from ${10}^{\ensuremath{-}6}$ to ${10}^{\ensuremath{-}5}$. In the ${B}^{0}/{\overline{B}}^{0}\ensuremath{\rightarrow}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}$ mode, we confirm Belle's previously reported large ${\mathcal{A}}_{CP}$ with a value of $\ensuremath{-}0.069\ifmmode\pm\else\textpm\fi{}0.014\ifmmode\pm\else\textpm\fi{}0.007$ and a significance of $4.4\ensuremath{\sigma}$. For all other flavor-specific modes, we find ${\mathcal{A}}_{CP}$ values consistent with zero, including ${\mathcal{A}}_{CP}({K}^{+}{\ensuremath{\pi}}^{0})=+0.043\ifmmode\pm\else\textpm\fi{}0.024\ifmmode\pm\else\textpm\fi{}0.007$ with $1.8\ensuremath{\sigma}$ significance. The difference of $CP$ asymmetry between ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{0}$ and ${B}^{0}/{\overline{B}}^{0}\ensuremath{\rightarrow}{K}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ensuremath{\mp}}$ is found to be $\ensuremath{\Delta}{\mathcal{A}}_{K\ensuremath{\pi}}\ensuremath{\equiv}{\mathcal{A}}_{CP}({K}^{+}{\ensuremath{\pi}}^{0})\ensuremath{-}{\mathcal{A}}_{CP}({K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})=+0.112\ifmmode\pm\else\textpm\fi{}0.027\ifmmode\pm\else\textpm\fi{}0.007$ with $4.0\ensuremath{\sigma}$ significance. We also calculate the ratios of partial widths for the $B\ensuremath{\rightarrow}K\ensuremath{\pi}$ decays. Using our results, we test the validity of the sum rule ${\mathcal{A}}_{CP}({K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})+{\mathcal{A}}_{CP}({K}^{0}{\ensuremath{\pi}}^{+})\frac{\ensuremath{\Gamma}({K}^{0}{\ensuremath{\pi}}^{+})}{\ensuremath{\Gamma}({K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})}\ensuremath{-}{\mathcal{A}}_{CP}({K}^{+}{\ensuremath{\pi}}^{0})\frac{2\ensuremath{\Gamma}({K}^{+}{\ensuremath{\pi}}^{0})}{\ensuremath{\Gamma}({K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})}\ensuremath{-}{\mathcal{A}}_{CP}({K}^{0}{\ensuremath{\pi}}^{0})\frac{2\ensuremath{\Gamma}({K}^{0}{\ensuremath{\pi}}^{0})}{\ensuremath{\Gamma}({K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})}=0$ and obtain a sum of $\ensuremath{-}0.270\ifmmode\pm\else\textpm\fi{}0.132\ifmmode\pm\else\textpm\fi{}0.060$ with $1.9\ensuremath{\sigma}$ significance.
Published: 2013

250. Search for an H-dibaryon with a mass near 2mΛ in Υ(1S) and Υ(2S) decays

Author: B H, Kim, S L, Olsen, I, Adachi, H, Aihara, D M, Asner, V, Aulchenko, A, Bay, K, Belous, B, Bhuyan, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, V, Chekelian, A, Chen, B G, Cheon, K, Chilikin, R, Chistov, I-S, Cho, K, Cho, V, Chobanova, S-K, Choi, Y, Choi, D, Cinabro, J, Dalseno, Z, Doležal, S, Eidelman, D, Epifanov, S, Esen, H, Farhat, J E, Fast, V, Gaur, S, Ganguly, R, Gillard, Y M, Goh, K, Hayasaka, H, Hayashii, Y, Hoshi, W-S, Hou, Y B, Hsiung, H J, Hyun, K, Inami, A, Ishikawa, R, Itoh, Y, Iwasaki, T, Julius, D H, Kah, J H, Kang, P, Kapusta, E, Kato, H, Kichimi, H J, Kim, H O, Kim, J H, Kim, K T, Kim, M J, Kim, S K, Kim, Y J, Kim, K, Kinoshita, J, Klucar, B R, Ko, P, Kodyš, S, Korpar, R T, Kouzes, P, Križan, P, Krokovny, T, Kumita, A, Kuzmin, Y-J, Kwon, J S, Lange, S-H, Lee, J, Li, X, Li, Y, Li, J, Libby, D, Liventsev, D, Matvienko, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, A, Moll, N, Muramatsu, R, Mussa, E, Nakano, M, Nakao, E, Nedelkovska, C, Ng, N K, Nisar, S, Nishida, K, Nishimura, T, Ohshima, S, Okuno, P, Pakhlov, G, Pakhlova, H, Park, H K, Park, M, Peters, M, Petrič, L E, Piilonen, M, Ritter, S, Ryu, H, Sahoo, Y, Sakai, S, Sandilya, T, Sanuki, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, A J, Schwartz, D, Semmler, K, Senyo, O, Seon, M E, Sevior, M, Shapkin, V, Shebalin, C P, Shen, T-A, Shibata, J-G, Shiu, B, Shwartz, F, Simon, P, Smerkol, Y-S, Sohn, A, Sokolov, E, Solovieva, S, Stanič, M, Starič, M, Sumihama, T, Sumiyoshi, U, Tamponi, K, Tanida, G, Tatishvili, Y, Teramoto, K, Trabelsi, M, Uchida, S, Uehara, T, Uglov, Y, Unno, S, Uno, Y, Usov, C, Van Hulse, G, Varner, V, Vorobyev, M N, Wagner, C H, Wang, P, Wang, Y, Watanabe, K M, Williams, E, Won, Y, Yamashita, V, Zhilich, and A, Zupanc
Abstract: We report the results of a high-statistics search for H dibaryon production in inclusive Υ(1S) and Υ(2S) decays. No indication of an H dibaryon with a mass near the M(H)=2m(Λ) threshold is seen in either the H→Λpπ(-) or ΛΛ decay channels and 90% confidence level branching-fraction upper limits are set that are between one and two orders of magnitude below the measured branching fractions for inclusive Υ(1S) and Υ(2S) decays to antideuterons. Since Υ(1S,2S) decays produce flavor-SU(3)-symmetric final states, these results put stringent constraints on H dibaryon properties. The results are based on analyses of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector at the KEKB e(+)e(-) collider.
Published: 2013

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