Author: "K. Sumisawa" / Journal: physical review d - Searchworks@Jio Institute Digital Library Search Results

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88 results on '"K. Sumisawa"'

1. Measurement of the masses and widths of the Σc(2455)+ and Σc(2520)+ baryons

Author: S-H Park, B. G. Cheon, Seema Bahinipati, T. V. Dong, M. Takizawa, Y. Choi, S. Das, T. Hara, J. V. Bennett, Y. Tao, S. Al Said, L. Santelj, H. Aihara, S. E. Vahsen, M. Uchida, L. K. Li, D. Liventsev, G. S. Varner, Y. Usov, R. Itoh, A. Rostomyan, P. Wang, Zhukova, K. Gudkova, K. Belous, L. Nayak, John Yelton, S. Korpar, D. Matvienko, Gaur, O. Hartbrich, Y. Iwasaki, U. Tamponi, N. Dash, T. Aushev, K. Senyo, S. Pardi, R. B. Garg, A. Chen, B. Bhuyan, G. De Nardo, A. Korobov, M. Sumihama, M. Niiyama, N. Rout, Motoki Iwasaki, T. Ferber, Chekelian, B. G. Fulsom, J-G Shiu, G. Schnell, S. Jia, S. Uno, C. Schwanda, T. E. Browder, Z. P. Zhang, R. Mizuk, S. Cunliffe, M. Shapkin, Andrey Sokolov, G. De Pietro, M. Laurenza, K. Chilikin, P. Goldenzweig, T. Matsuda, A. Sangal, T. Kuhr, S. Sandilya, Shih-Chang Lee, I. Adachi, M. C. Chang, Jyoti Prakash Biswal, Babu, M. Merola, Antonio Budano, Phillip Urquijo, T. Gu, Y-J Kwon, R. Kroeger, M. E. Sevior, P. Krizan, K. Kumara, M. Nakao, R. Pestotnik, M. Nayak, Ya-Qiu Jin, M. Starič, Y. B. Li, R. Dhamija, Seongbae Yang, D Wang, C.-L. Hsu, A. Vinokurova, C. Hadjivasiliou, C. H. Wang, Z. S. Stottler, L. E. Piilonen, Bruce Yabsley, K. Tanida, T. Uglov, P. Pakhlov, E. Wang, Y. Onuki, G. Pakhlova, P. Oskin, R. Kulasiri, W-S Hou, S. Paul, L. Li Gioi, C. Z. Yuan, E. Prencipe, P. Krokovny, C. Sharma, Peter Kodys, S-J Cho, J. Li, W. W. Jacobs, K. Trabelsi, H. Ye, Y. Sakai, K. H. Kang, K. Cho, S. K. Choi, T. J. Moon, K. T. Kim, D. Cinabro, C. P. Shen, Zdenek Dolezal, Seok Kim, H. Park, T. Konno, A. Bozek, K. Lieret, Martin Florian Bessner, R. Ayad, N. Gabyshev, D. Červenkov, D. Epifanov, A. Garmash, P. Branchini, D. Y. Kim, K. Sumisawa, S. Nishida, D. M. Asner, T. K. Pedlar, Zhilich, P. K. Behera, F. Tenchini, A. K. Giri, E. Solovieva, P. Chang, T. Podobnik, T. Sumiyoshi, Yk Kim, K. Hayasaka, R. Mussa, T. Sanuki, M. Masuda, R. Van Tonder, G. B. Mohanty, A. Ishikawa, H. E. Cho, Doyen Sahoo, S. Ogawa, Somnath Choudhury, W. B. Yan, E. Waheed, Z. Natkaniec, J. Libby, E. Kovalenko, Y. Seino, M. T. Prim, Shoichi Watanuki, T. Bilka, M. Watanabe, J. C. Dingfelder, F. Di Capua, K. K. Joo, A. B. Kaliyar, J. Schueler, E. Won, C. MacQueen, J. K. Ahn, H. Atmacan, G.V. Russo, E. Graziani, J. H. Yin, M. Campajola, Y. Kato, D. Ferlewicz, N. K. Nisar, Bhardwaj, J. S. Lange, K. Miyabayashi, C. Kiesling, M. Bračko, H. Ono, Y. Unno, H. Hayashii, C. H. Kim, M. Z. Wang, K. Kinoshita, Aulchenko, A. Natochii, K. Inami, Savinov, and J. T. McNeil
Subjects: Physics, Quark, Particle physics, 010308 nuclear & particles physics, Sigma, Lambda, 01 natural sciences, law.invention, Baryon, Charmed baryons, KEKB, law, 0103 physical sciences, 010306 general physics, Collider
Abstract: Using 980 ${\rm fb}^{-1}$ of data {collected} with the Belle detector operating at the KEKB asymmetric-energy $e^+e^-$ collider, we report the measurements of the masses, and the first measurements of the instrinsic widths, of the $\Sigma_c(2455)^+$ and $\Sigma_c(2520)^+$ charmed baryons. We find $M(\Sigma_c(2455)^+)-M(\Lambda_c^+) = 166.17\pm 0.05^{+0.16}_{-0.07}\ {\rm MeV}/c^2$, $\Gamma(\Sigma_c(2455)^+) = 2.3 \pm 0.3 \pm 0.3\ {\rm MeV/c^2}$, $M(\Sigma_c(2520)^+)-M(\Lambda_c^+) = 230.9 \pm 0.5 ^{+0.5}_{-0.1}\ {\rm MeV}/c^2$, and $\Gamma(\Sigma_c(2520)^+) = 17.2^{+2.3\ +3.1}_{-2.1\ -0.7}\ {\rm MeV}/c^2$, where the uncertainties are statistical and systematic, respectively. These measurements can be used to test models of the underlying quark structure of the $\Sigma_c$ states.
Published: 2021

2. Search for Bs0→η′Xss¯ at Belle using a semi-inclusive method

Author: D. M. Asner, K. Tanida, K. Hayasaka, Daniel Greenwald, S. Al Said, D. Epifanov, Soumya D. Mohanty, R. Mizuk, K. Chilikin, Y. Seino, S. E. Vahsen, J. V. Bennett, Y. Tao, F. Di Capua, M. Uchida, T. K. Pedlar, GB Mohanty, P. Wang, Shoichi Watanuki, Yongsun Kim, A. Sangal, P. Oskin, Y. Usov, L. K. Li, K. Lalwani, C. Schwanda, S. Nishida, Martin Florian Bessner, R. Kulasiri, J. Li, R. Dhamija, A. B. Kaliyar, W. B. Yan, H. Kichimi, A. Bobrov, Y. Iwasaki, L. Nayak, V. Babu, H Ye, T. J. Moon, M. T. Prim, K. Sumisawa, H. E. Cho, TE Browder, P Behera, A. K. Giri, T. Matsuda, M. T. Hedges, BG Cheon, G. Schnell, K. Nishimura, N. Rout, M. Bračko, T. Ferber, M. Masuda, S. Uno, K. Senyo, C. W. Joo, S Choudhury, G. Bonvicini, E. Prencipe, S. Das, G. Varner, R. Itoh, A. Bozek, A. Rostomyan, S. Pardi, G. Russo, S. Dubey, G. Pakhlova, S. Cunliffe, V.N. Zhilich, B. G. Fulsom, K. Gudkova, J. F. Strube, E.-J. Jang, M Merola, Y. Guan, C.-L. Hsu, Semen Eidelman, M. Nayak, J. Biswal, Y Choi, Rahul Kumar, K. Miyabayashi, Samo Korpar, S-H Park, C. Hadjivasiliou, C. Sharma, Bruce Yabsley, S. Sandilya, W. S. Hou, T. Kuhr, Pavel Krokovny, C. H. Li, A. Ishikawa, R. Van Tonder, M. Nakao, M. Takizawa, V. Gaur, R. B. Garg, B. Bhuyan, Y. Ushiroda, A. Natochii, J-G Shiu, C. MacQueen, P. Križan, M. Starič, K. Inami, Z. Doležal, D Cinabro, K. Trabelsi, J. Libby, F. Tenchini, V. Savinov, Doyen Sahoo, K. Kumara, S. H. Kim, E. Wang, J. H. Yin, S Ogawa, T. Podobnik, Tagir Aushev, Y. Onuki, Z. S. Stottler, T. Kawasaki, M. Campajola, B. Golob, N. Gabyshev, D. Červenkov, T. Sanuki, A. Garmash, N. K. Nisar, J. S. Lange, H. Hayashii, T. D. Kimmel, C. H. Kim, B. Shwartz, R. Kroeger, D. Liventsev, Y-J Kwon, Y. Jin, M. E. Sevior, P. Goldenzweig, Y. Sakai, E. Solovieva, X. P. Xu, K Kinoshita, S. Bilokin, Yang Li, Seema Bahinipati, L. Santelj, M Iwasaki, S. C. Lee, Zhiqing Zhang, Chunjie Wang, H. Ono, Leo Piilonen, Seongbae Yang, Felix Metzner, Y. Unno, DY Kim, K. K. Joo, R. Ayad, K. Cho, Victoria Zhukova, M. Shapkin, R. Pestotnik, L. Li Gioi, U. Tamponi, D. Dossett, H Aihara, and M. Watanabe
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, 01 natural sciences, Belle experiment, law.invention, Luminosity, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, Bar (unit)
Abstract: We report the first search for the penguin-dominated process $B_{s}^{0} \rightarrow \eta^{\prime} X_{s\bar{s}}$ using a semi-inclusive method. A 121.4 $\mathrm{fb}^{-1}$ integrated luminosity $\Upsilon(5S)$ data set collected by the Belle experiment, at the KEKB asymmetric-energy $e^+e^-$ collider, is used. We observe no statistically significant signal and including all uncertainties, we set a 90\% confidence level upper limit on the partial branching fraction at 1.4 $\times$ 10$^{-3}$ for $M(X_{s\bar{s}})$ $\leq$ 2.4 GeV/$c^{2}$.
Published: 2021

3. First determination of the spin and parity of the charmed-strange baryon Ξc(2970)+

Author: R. Mizuk, K. Chilikin, K. T. Kim, Y Choi, C. Beleño, Y. Kato, D. M. Asner, Pavel Krokovny, D. Dossett, K. Hayasaka, W. Sutcliffe, Zhukova, Y. Seino, J. Libby, D. Epifanov, K. Miyabayashi, D Cinabro, K. Trabelsi, B. Golob, A. Garmash, S. Wehle, A. Sangal, G. Varner, M. Uchida, Y. I. Kim, Leo Piilonen, C. P. Shen, F. Di Capua, H. Miyata, Takeo Kawasaki, A. K. Giri, K. Sumisawa, BG Cheon, T. J. Moon, J. S. H. Lee, N. K. Nisar, Babu, Z. Liptak, M. Niiyama, P Behera, A. Vossen, T. D. Kimmel, M. Masuda, T. K. Pedlar, S. Al Said, J. Biswal, Zhulanov, M. Nayak, P. Wang, H Aihara, L. K. Li, G. Schnell, T. V. Dong, T. Bilka, R. Kroeger, J. Schueler, Seongbae Yang, H. Ono, Saraju P. Mohanty, GB Mohanty, Vorobyev, E. Prencipe, D. Liventsev, TE Browder, P. Chang, U. Tamponi, C.-L. Hsu, K. K. Joo, S-H Park, Yongsun Kim, K. Senyo, C. Schwanda, S. Cunliffe, B. G. Fulsom, S. Jia, D. Matvienko, R. Itoh, X. P. Xu, A. Bozek, Peter Kodys, W. W. Jacobs, T. Matsuda, Zdenek Dolezal, T. Kuhr, M Iwasaki, Yang Li, S. Paul, R. Mussa, T. Ferber, Tao Luo, K. Tanida, S. K. Kim, A. Kuzmin, D. Kotchetkov, S. Uno, S Choudhury, L. Cao, S. C. Lee, M. Takizawa, C. MacQueen, G. Karyan, J. K. Ahn, L. Santelj, G. Bonvicini, Aulchenko, A. Ishikawa, M. Nakao, L. Li Gioi, John Yelton, Gaur, Samo Korpar, A. Vinokurova, S. Dubey, Y. Sakai, H. Kichimi, Rocky Bala Garg, F. Tenchini, O. Hartbrich, Zhiqing Zhang, Chunjie Wang, S. Patra, T. Podobnik, S. Pardi, T. Sumiyoshi, P. Krizan, S Ogawa, E. Wang, M. Campajola, Rakesh Kumar, M Merola, K. H. Kang, J. Wiechczynski, B.A. Shwartz, Y. Unno, Martin Ritter, R. Ayad, K. Cho, Seema Bahinipati, C. Hadjivasiliou, Bruce Yabsley, S. Nishida, G. De Nardo, M. T. Hedges, Y-J Kwon, K. Kumara, Y. Jin, T. Uglov, W-S Hou, Phillip Urquijo, M. E. Sevior, I. S. Lee, Savinov, Zhilich, P. Goldenzweig, M. Sumihama, I. Adachi, N. Dash, T. Mori, E. Solovieva, DY Kim, Semen Eidelman, J. H. Yin, G. Inguglia, K Kinoshita, R. Seidl, C. Kiesling, B. H. Kim, C. Z. Yuan, M. Bračko, Tagir Aushev, M. C. Chang, G. Pakhlova, S. K. Choi, S. Sandilya, Z. Natkaniec, S. E. Vahsen, Y. Iwasaki, S. Uehara, N. Rout, N. Gabyshev, D. Červenkov, M. Z. Wang, Martin Florian Bessner, H Ye, J. Bennett, S. H. Kim, M. Shapkin, H. Hayashii, R. Pestotnik, Dipak Kumar Sahoo, Popov, Kohei Ogawa, A. Chen, A. Natochii, K. Inami, M. T. Prim, T. Nakano, P. Pakhlov, G. Russo, H. Park, R. Van Tonder, B. Bhuyan, and J-G Shiu
Subjects: Quark, Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Parity (physics), 01 natural sciences, Baryon, KEKB, Angular distribution, Condensed Matter::Superconductivity, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: We report results from a study of the spin and parity of $\Xi_{c}(2970)^+$ using a $980~\mathrm{fb^{-1}}$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The decay angle distributions in the chain $\Xi_{c}(2970)^+ \to \Xi_c(2645)^{0}\pi^{+} \to \Xi_c^{+}\pi^{-}\pi^{+}$ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the $\Xi_{c}(2970)^+$ spin $J =1/2$ over $3/2$ or $5/2$, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of $\Xi_{c}(2970)^+$ decay branching fractions $R={\mathcal{B}[ \Xi_{c}(2970)^+ \to \Xi_c(2645)^{0}\pi^{+} ]} / { \mathcal{B}[ \Xi_{c}(2970)^+ \to \Xi_c^{\prime0}\pi^{+} ]} =1.67 \pm 0.29\mathrm{(stat.)}^{ +0.15}_{ -0.09}\mathrm{(syst.)} \pm 0.25\mathrm{(IS)}$, where the last uncertainty is due to possible isospin-symmetry-breaking effects. This $R$ value favors the spin-parity $J^P=1/2^+$ with the spin of the light-quark degrees of freedom $s_{l}=0$. This is the first determination of the spin and parity of a charmed-strange baryon.
Published: 2021

4. Measurement of time-dependent CP violation parameters in B0→KS0KS0KS0 decays at Belle

Author: R. Mizuk, C. Beleño, A. B. Kaliyar, L. Li Gioi, H. Miyata, Yongsun Kim, J. Li, J. Schueler, S. Uno, C. Schwanda, H. Ye, T. J. Moon, E. Won, A. K. Giri, K. Trabelsi, M. Masuda, G. B. Mohanty, K. Hayasaka, S. Pardi, L. Cao, M. Z. Wang, K. Kinoshita, S. Cunliffe, Seok Kim, Y. Guan, M. Shapkin, M. C. Chang, C.-L. Hsu, M. Takizawa, Y. Yusa, Z. P. Zhang, Peter Kodys, W. W. Jacobs, M. Röhrken, V. Babu, P. Goldenzweig, H. Ono, K. Chilikin, A. Garmash, Daniel Greenwald, G. Karyan, A. Sangal, G.V. Russo, T. Aushev, G. Schnell, C. MacQueen, H. Nakazawa, A. M. Bakich, J. E. Fast, B. G. Cheon, J. K. Ahn, S. Sandilya, L. E. Piilonen, G. Pakhlova, P. Oskin, R. Kulasiri, W. S. Hou, T. Ferber, M. Nayak, D. Matvienko, R. B. Garg, A. J. Schwartz, Z. Doležal, K. Sumisawa, M. Merola, Motoki Iwasaki, D. M. Asner, Alexei Kuzmin, D. Y. Kim, Ya-Qiu Jin, M. Starič, Y. Ushiroda, N. Gabyshev, D. Červenkov, B. G. Fulsom, Bruce Yabsley, P. K. Behera, V. Vorobyev, Jyoti Prakash Biswal, Seema Bahinipati, T. E. Browder, T. V. Dong, Y. Choi, Seokhee Park, L. Santelj, K. H. Kang, Y. Unno, R. Pestotnik, M. Campajola, T. Bilka, J. H. Yin, S. Korpar, Seongbae Yang, I. Adachi, K.-H. Kim, W. Sutcliffe, Y. Onuki, V. Gaur, W. B. Yan, H. Hayashii, O. Hartbrich, N. Dash, G. De Nardo, M. Mrvar, C. H. Kim, F. Tenchini, V. Savinov, E.-J. Jang, Z. Natkaniec, T. Podobnik, T. Sumiyoshi, M. Nakao, Rahul Kumar, U. Tamponi, B. Golob, C. Kiesling, S. Ogawa, N. K. Nisar, M. Hernandez Villanueva, R. Mussa, T. Morii, Victoria Zhukova, T. Higuchi, Vladimir Popov, J. G. Shiu, Martin Ritter, H. B. Jeon, J. S. Lange, T. Sanuki, J. MacNaughton, J. Libby, A. Ishikawa, V.E. Shebalin, Y. Iwasaki, Y. J. Kwon, A. Chen, S. Jia, S. Nishida, V.N. Zhilich, E. Wang, V. M. Aulchenko, Z. S. Stottler, P. Križan, K. K. Joo, R. Ayad, N. Rout, Phillip Urquijo, M. Bračko, Doyen Sahoo, Y. Sakai, S. K. Choi, K. Lieret, X. L. Wang, Y. B. Li, T. Uglov, K. Miyabayashi, Kohei Ogawa, C. H. Wang, Y. Seino, M. T. Prim, S. Paul, J. V. Bennett, T. Mori, H. Aihara, Shoichi Watanuki, K. Inami, K. Nishimura, V. Chekelian, D. Cinabro, C. Z. Yuan, V. V. Zhulanov, E. Solovieva, G. Inguglia, E. Prencipe, S. Eidelman, X. P. Xu, M. Rozanska, D. Kotchetkov, P. Pakhlov, Shih-Chang Lee, Sudhanwa Patra, Samo Stanič, H. Park, A. Bozek, V. Bhardwaj, K. Tanida, T. K. Pedlar, H. Kichimi, R. Kroeger, M. E. Sevior, I. S. Lee, T. Matsuda, G. Bonvicini, A. Vinokurova, P. Krokovny, K. Cho, M. Uchida, L. K. Li, D. Liventsev, G. S. Varner, A. Rostomyan, P. Wang, M. V. Purohit, K. Senyo, T. Kawasaki, and S. Al Said
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Zero (complex analysis), Resonance, 01 natural sciences, law.invention, Standard Model, KEKB, law, 0103 physical sciences, CP violation, 010306 general physics, Collider
Abstract: We measure the time-dependent $C\!P$ violation parameters in $B^{0} \to K^{0}_{S}K^{0}_{S}K^{0}_{S}$ decays using $772 \times 10^6$ $B {\mkern 1.5mu\overline{\mkern-1.5mu B \mkern-0.1mu}\mkern 0.1mu}$ pairs collected at the $\Upsilon (4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The obtained mixing-induced and direct $C\!P$ asymmetries are $-0.71 \pm 0.23~{\rm(stat)} \pm 0.05~{\rm(syst)}$ and $0.12 \pm 0.16~{\rm(stat)} \pm 0.05~{\rm(syst)}$, respectively. These values are consistent with the Standard Model predictions. The significance of $C\!P$ violation differs from zero by 2.5 standard deviations.
Published: 2021

5. Search for a doubly charged DDK bound state in ϒ(1S, 2S) inclusive decays and via direct production in e+e− collisions at s=10.520 , 10.580, and 10.867 GeV

Author: R. Mussa, H. Miyata, Prafulla Kumar Behera, H. B. Jeon, A. Ishikawa, S. Al Said, H. Ye, M. Nakao, P. Križan, M. Uchida, Saraju P. Mohanty, Yongsun Kim, K. Lalwani, C. Schwanda, V. Bhardwaj, L. Santelj, S. Watanuki, Z. P. Zhang, M. Z. Wang, K. Kinoshita, C. Z. Yuan, E. Prencipe, G. S. Varner, R. Kulasiri, U. Tamponi, M. Shapkin, M. Röhrken, K. Chilikin, S. E. Vahsen, V.N. Zhilich, A. B. Kaliyar, W. Sutcliffe, M. Sumihama, D. Epifanov, S. Nishida, Martin Florian Bessner, J. Bennett, A. Rostomyan, P. Wang, B. G. Fulsom, Y. Iwasaki, J. G. Shiu, T. K. Pedlar, J. Schueler, G. Schnell, L. K. Li, K. Miyabayashi, R. Ayad, Seema Bahinipati, Jochen Dingfelder, W. B. Yan, Y. J. Kwon, V. Gaur, C. H. Wang, G. Pakhlova, R. Pestotnik, Dipak Kumar Sahoo, Seongbae Yang, C. W. Joo, Y. B. Li, K. Tanida, E. Won, L. Li Gioi, G. De Nardo, M. T. Hedges, N. Rout, S. Jia, T. Matsuda, S. Uno, Tagir Aushev, Y. Onuki, T. Kuhr, C. MacQueen, C. H. Li, M. Iwasaki, B. G. Cheon, M. Niiyama, Jyoti Prakash Biswal, A. Garmash, Andrey Sokolov, G. Bonvicini, A. Vinokurova, A. Natochii, T. Bilka, D. Y. Kim, K. Inami, Z. J. Liptak, R. Itoh, P. Krokovny, F. Tenchini, M. Campajola, K. Belous, S. Korpar, M. Watanabe, S. Sandilya, T. Podobnik, T. Sumiyoshi, Rakesh Kumar, K. H. Kang, K. Cho, S. C. Lee, F. Di Capua, Martin Ritter, Victoria Zhukova, B.A. Shwartz, I. Adachi, Semen Eidelman, A. Chen, T. Sanuki, S. Pardi, M. Starič, L. E. Piilonen, P. Oskin, H. Hayashii, E. Wang, L. Nayak, V. Babu, Vladimir Zhulanov, Y. Jin, T. Uglov, T. Ferber, R. Kroeger, Bruce Yabsley, M. E. Sevior, I. S. Lee, S. Cunliffe, P. Goldenzweig, J. Libby, D. M. Asner, K. Hayasaka, T. Mori, H. Aihara, M. C. Chang, G. Inguglia, Y. Guan, Tomoyuki Konno, K. Kumara, Y. Seino, M. T. Prim, Takeo Kawasaki, S.-J. Cho, Z. S. Stottler, D. Cinabro, P. Chang, M. Kumar, C. P. Shen, Seok Kim, M. Takizawa, Somnath Choudhury, D. Matvienko, Seokhee Park, John Yelton, Z. Doležal, K. Kim, H. Ono, S. K. Choi, M. Nayak, N. K. Nisar, J. S. Lange, R. Mizuk, T. Pang, S. Patra, Yoshinobu Unno, A. K. Giri, K. Sumisawa, M. Masuda, T. V. Dong, C.-L. Hsu, W. S. Hou, J. Li, C. Sharma, Peter Kodys, W. W. Jacobs, G. Karyan, V. Vorobyev, Y. Choi, V. Popov, Y. Sakai, O. Hartbrich, G. B. Mohanty, K. Lieret, K. K. Joo, N. Dash, E. Solovieva, X. P. Xu, S. Paul, D. Kotchetkov, B. Bhuyan, T. E. Browder, V. Savinov, R. Van Tonder, P. Pakhlov, G. Russo, H. Park, A. Bozek, Z. Natkaniec, D. Červenkov, J. H. Yin, S. Das, C. Kiesling, M. Bračko, A. Sangal, Rocky Bala Garg, M. Merola, K. Senyo, and C. Hadjivasiliou
Subjects: Physics, Direct production, Particle physics, KEKB, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Bound state, 010306 general physics, 01 natural sciences, Spectral line
Abstract: We report the results of a first search for a doubly charged DDK bound state, denoted the R++, in ϒ(1S) and ϒ(2S) inclusive decays and via direct production in e+e- collisions at s=10.520, 10.580, and 10.867 GeV. The search uses data accumulated with the Belle detector at the KEKB asymmetric-energy e+e- collider. No significant signals are observed in the D+Ds∗+ invariant-mass spectra of all studied modes. The 90% credibility level upper limits on their product branching fractions in ϒ(1S) and ϒ(2S) inclusive decays (B(ϒ(1S, 2S)→R+++anything)×B(R++→D+Ds∗+)), the product values of Born cross section and branching fraction in e+e- collisions (σ(e+e-→R+++anything)×B(R++→D+Ds∗+)) at s=10.520, 10.580, and 10.867 GeV under different assumptions of R++ masses varying from 4.13 to 4.17 GeV/c2 and widths varying from 0 to 5 MeV are obtained.
Published: 2020

6. Search for transitions from ϒ(4S) and ϒ(5S) to ηb(1S) and ηb(2S) with emission of an ω meson

Author: K. Miyabayashi, W. B. Yan, Jyoti Prakash Biswal, A. Garmash, P. Goldenzweig, C.-L. Hsu, L. Nayak, Seongbae Yang, S. Pardi, T. Aushev, S. Sandilya, U. Tamponi, H. Nakazawa, Peter Kodys, Vladimir Popov, M. Campajola, W. W. Jacobs, T. Ferber, V. Gaur, R. Mussa, G. Schnell, M. Niiyama, S. Jia, T. Matsuda, Deepak Kumar Sahoo, M. Starič, D. M. Asner, A. B. Kaliyar, P. K. Behera, H. Ono, X. P. Xu, H. Aihara, A. Ishikawa, M. Nakao, T. Iijima, G. Karyan, C. W. Joo, D. Kotchetkov, G. Bonvicini, Motoki Iwasaki, F. Tenchini, C. Hadjivasiliou, J. Schueler, A. Vinokurova, S. Dubey, V. Aulchenko, P. Krokovny, Kohei Ogawa, Bruce Yabsley, S. E. Vahsen, T. J. Moon, A. Natochii, P. Oskin, S. K. Choi, Y. Onuki, P. Križan, R. Mizuk, T. Podobnik, Y. Sakai, K. Inami, S. Ogawa, Y. Iwasaki, F. Di Capua, K. H. Kang, K. Cho, D. Epifanov, Soumya D. Mohanty, E. Won, C. H. Wang, S. Paul, L. Li Gioi, M. Nayak, Y. J. Kwon, K. Kumara, E. Wang, E. Waheed, M. Hernandez Villanueva, V. Bhardwaj, T. K. Pedlar, H. Ye, C. Z. Yuan, E. Prencipe, K. Lieret, C. H. Li, T. Sanuki, S. Wehle, R. Dhamija, N. Rout, Z. S. Stottler, J. Libby, Ya-Qiu Jin, Victoria Zhukova, L. K. Li, D. Liventsev, A. K. Giri, M. Z. Wang, K. Kinoshita, D. Y. Kim, Y. Unno, T. Uglov, A. Chen, E. Solovieva, K. Trabelsi, A. Sangal, J. H. Yin, G. S. Varner, M. Shapkin, C. P. Shen, Z. P. Zhang, S. Cunliffe, Martin Florian Bessner, Y. Seino, M. Masuda, R. Kroeger, K. Chilikin, M. Takizawa, G. B. Mohanty, R. Ayad, M. E. Sevior, M. T. Prim, M. Merola, R. Itoh, H. Miyata, K. Sumisawa, G. De Nardo, M. T. Hedges, A. Rostomyan, K. Tanida, P. Wang, Shoichi Watanuki, K. Gudkova, L. Cao, H. Atmacan, Rahul Kumar, D. Cinabro, R. Pestotnik, John Yelton, Z. Doležal, Andrey Sokolov, B. Golob, T. V. Dong, H. Kichimi, Y. Choi, Z. J. Liptak, T. Hara, L. Santelj, L. E. Piilonen, J. Wiechczynski, N. K. Nisar, T. Bilka, Seokhee Park, H. Hayashii, G. Pakhlova, Yongsun Kim, S. Uno, C. Schwanda, R. Kulasiri, P. Chang, O. Hartbrich, C. H. Kim, H. E. Cho, M. Watanabe, J. C. Dingfelder, J. S. Lange, K. Senyo, T. Pang, J. V. Bennett, T. Mori, Y. Usov, Semen Eidelman, Y. Yusa, G.V. Russo, Somnath Choudhury, W. S. Hou, Felix Metzner, V. Vorobyev, K. K. Joo, B. G. Cheon, K. Belous, S. Korpar, S. C. Lee, J. G. Shiu, S. Nishida, V. Chekelian, R. Van Tonder, R. B. Garg, B. Bhuyan, B. G. Fulsom, T. E. Browder, V. Savinov, P. Pakhlov, Philip Lewis, H. Park, A. Bozek, C. Kiesling, M. Bračko, N. Gabyshev, D. Červenkov, V.N. Zhilich, and D. Ferlewicz
Subjects: Physics, Particle physics, KEKB, Meson, 010308 nuclear & particles physics, law, 0103 physical sciences, 010306 general physics, Collider, 01 natural sciences, Belle experiment, law.invention
Abstract: Using data collected in the Belle experiment at the KEKB asymmetric-energy e+e− collider we search for transitions Υ(4S)→ η$_{b}$(1S)ω, Υ(5S)→η$_{b}$(1S)ω and Υ(5S)→η$_{b}$(2S)ω. No significant signals are observed and we set 90% confidence level upper limits on the corresponding visible cross sections: 0.2 pb, 0.4 pb and 1.9 pb, respectively.
Published: 2020

7. Study of electromagnetic decays of orbitally excited Ξc baryons

Author: X. L. Wang, V. Chekelian, R. Van Tonder, M. Shapkin, J. K. Ahn, P. Pakhlov, K. Chilikin, G. Russo, H. Park, A. Bozek, P. Lewis, M. Uchida, J. Libby, D. M. Asner, C. MacQueen, C.-L. Hsu, B. Bhuyan, T. E. Browder, V. Savinov, K. Hayasaka, V. Bhardwaj, R. Ayad, Seema Bahinipati, Tagir Aushev, Y. Onuki, D. Epifanov, N. K. Nisar, G. S. Varner, J. S. Lange, S. Sandilya, J. B. Singh, E. Won, R. Pestotnik, Peter Kodys, T. J. Moon, W. W. Jacobs, S. K. Choi, T. K. Pedlar, X. P. Xu, D. Kotchetkov, Y. Seino, M. T. Prim, S. Al Said, M. Starič, A. Rostomyan, G. Schnell, T. Iijima, D. Y. Kim, C. W. Joo, S.-J. Cho, K. Kumara, M. Campajola, L. K. Li, P. Wang, B. G. Fulsom, Saraju P. Mohanty, Takeo Kawasaki, V.N. Zhilich, Y. Kato, S. Pardi, C. P. Shen, G. Karyan, G. De Nardo, Seok Kim, M. T. Hedges, A. B. Kaliyar, Seongbae Yang, M. Takizawa, F. Di Capua, W. Sutcliffe, A. Kuzmin, S. E. Vahsen, I. Adachi, Victoria Zhukova, Yongsun Kim, Z. S. Stottler, K. K. Joo, M. Merola, V. Babu, J. Schueler, R. Kulasiri, K. Lalwani, A. Chen, M. Sumihama, John Yelton, Z. Doležal, S. Jia, K. Lieret, Y. Choi, R. Mizuk, C. Schwanda, K. Miyabayashi, Y. Iwasaki, G. Inguglia, Y. J. Kwon, T. Ferber, V. Popov, T. Matsuda, S. Uno, L. Santelj, S. Ogawa, C. Beleño, K. Senyo, G. Bonvicini, M. Hernandez Villanueva, Shih-Chang Lee, E. Nakano, V. Gaur, Y. Sakai, S. Patra, A. Vinokurova, O. Hartbrich, H. Hayashii, E. Waheed, D. Matvienko, N. Rout, Bruce Yabsley, E. Solovieva, H. Ono, W. S. Hou, S. Nishida, G. B. Mohanty, B. H. Kim, P. Krokovny, Rakesh Kumar, Seokhee Park, M. Nayak, A. K. Giri, K. Sumisawa, K. H. Kang, K. Cho, H. Miyata, Prafulla Kumar Behera, W. B. Yan, V. Vorobyev, S.I. Eidelman, M. Z. Wang, K. Kinoshita, M. Masuda, E. Prencipe, T. V. Dong, Y. Unno, J. Bennett, Dipak Kumar Sahoo, Kohei Ogawa, A. Natochii, K. Inami, V.E. Shebalin, M. Iwasaki, B. G. Cheon, R. Itoh, S. Korpar, J. G. Shiu, Phillip Urquijo, Y. B. Li, Jyoti Prakash Biswal, J. F. Strube, E. Wang, Z. P. Zhang, G. Pakhlova, J. T. McNeil, T. Mori, H. Aihara, Y. Usov, M. Mrvar, A. Garmash, T. Sanuki, D. Liventsev, S. Cunliffe, M. C. Chang, F. Tenchini, T. Podobnik, T. Sumiyoshi, Martin Ritter, L. E. Piilonen, P. Oskin, L. Li Gioi, R. Mussa, A. Ishikawa, M. Nakao, P. Križan, Andrey Sokolov, Rocky Bala Garg, C. Hadjivasiliou, Z. Natkaniec, N. Gabyshev, D. Červenkov, J. H. Yin, C. Kiesling, M. Bračko, T. Bilka, M. Watanabe, U. Tamponi, C. H. Wang, S. Paul, H. Ye, Tao Luo, K. Tanida, D. Cinabro, H. Kichimi, P. Chang, Z. J. Liptak, B.A. Shwartz, Vladimir Zhulanov, Y. Jin, T. Uglov, R. Kroeger, M. E. Sevior, P. Goldenzweig, and Somnath Choudhury
Subjects: Physics, Quark, Particle physics, 010308 nuclear & particles physics, 01 natural sciences, Measure (mathematics), law.invention, Charmed baryons, Baryon, KEKB, law, Excited state, 0103 physical sciences, 010306 general physics, Collider
Abstract: Using 980 fb−1 of data collected with the Belle detector operating at the KEKB asymmetric-energy eþe− collider, we report a study of the electromagnetic decays of excited charmed baryons Ξcð2790Þ and Ξcð2815Þ. A clear signal (8.6 standard deviations) is observed for Ξcð2815Þ0 → Ξ0 cγ, and we measure: B½Ξcð2815Þ0 → Ξ0 cγ B½Ξcð2815Þ0 → Ξcð2645Þþπ− → Ξ0 cπþπ− ¼ 0.41 0.05 0.03. We also present evidence (3.8 standard deviations) for the similar decay of the Ξcð2790Þ0 and measure: B½Ξcð2790Þ0 → Ξ0 cγ B½Ξcð2790Þ0 → Ξ0þ c π− → Ξþ c γπ− ¼ 0.13 0.03 0.02. The first quoted uncertainties are statistical and the second systematic. We find no hint of the analogous decays of the Ξcð2815Þþ and Ξcð2790Þþ baryons and set upper limits at the 90% confidence level of: B½Ξcð2815Þþ → Ξþ c γ B½Ξcð2815Þþ → Ξcð2645Þ0πþ → Ξþ c π−πþ < 0.09, and B½Ξcð2790Þþ → Ξþ c γ B½Ξcð2790Þþ → Ξ00 c πþ → Ξ0 cγπþ < 0.06. Approximate values of the partial widths of the decays are extracted, which can be used to discriminate between models of the underlying quark structure of these excited states.
Published: 2020

8. Measurements of time-dependentCPasymmetries inB→D*∓π±decays using a partial reconstruction technique

Author: S. Bahinipati, K. Trabelsi, K. Kinoshita, K. Arinstein, V. Aulchenko, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, A. Chen, P. Chen, B. G. Cheon, C.-C. Chiang, I.-S. Cho, K. Cho, Y. Choi, J. Dalseno, Z. Doležal, Z. Drásal, S. Eidelman, N. Gabyshev, B. Golob, H. Ha, Y. Horii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, C. Kiesling, H. J. Kim, M. J. Kim, B. R. Ko, N. Kobayashi, P. Kodyš, P. Križan, T. Kumita, Y.-J. Kwon, S.-H. Kyeong, J. S. Lange, M. J. Lee, S.-H. Lee, J. Li, C. Liu, R. Louvot, A. Matyja, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, G. B. Mohanty, M. Nakao, Z. Natkaniec, S. Neubauer, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, P. Pakhlov, C. W. Park, M. Petrič, L. E. Piilonen, A. Poluektov, M. Röhrken, H. Sahoo, Y. Sakai, O. Schneider, C. Schwanda, A. J. Schwartz, M. E. Sevior, M. Shapkin, C. P. Shen, J.-G. Shiu, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Tanaka, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, G. Varner, A. Vinokurova, C. H. Wang, E. Won, B. D. Yabsley, Y. Yamashita, C. C. Zhang, Z. P. Zhang, P. Zhou, T. Zivko, and A. Zupanc
Published: 2011
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9. Measurement of cos2β in B0→D(*)h0 with D→KS0π+π− decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

Author: C. Bünger, T. Matsuda, J. W. Gary, T. S. Mattison, S. H. Kim, S. J. Sekula, A. Jawahery, P. Krokovny, M. Feindt, I. Adachi, D. B. MacFarlane, C. Hearty, P. Goldenzweig, K. H. Kang, K. Cho, S. Sandilya, A. G. Denig, R. F. Schwitters, M. Rozanska, D. Kotchetkov, E. Fioravanti, B. Golob, F. Palombo, T. Lueck, P. Pakhlov, J. B. Kim, K. Yu. Todyshevx, T. Leddig, D. Epifanov, N. K. Nisar, J. S. Lange, Z. C. Huard, V.N. Zhilich, Shih-Chang Lee, W. S. Lockman, M. R. Convery, D. N. Brown, A. Calcaterra, M. Z. Wang, K. Kinoshita, D. J. Summers, A. Filippi, H. Park, A. Bozek, Simon Akar, R. Prepost, R. Mussa, D. Gamba, M. Bellis, A. Ishikawa, F. De Mori, J. E. Fast, Cheng Chen, M. Starič, N. Tasneem, G.V. Russo, J. P. Coleman, F. Anulli, Alessandro Gaz, S. H. Robertson, Aidan Randle-Conde, W. S. Hou, G. J. King, Victoria Zhukova, F. F. Wilson, R. J. Sobie, L. Vitale, B. T. Meadows, P. Križan, G. Raven, Denis Bernard, S. Nishida, K. Miyabayashi, I. Badhrees, R. Ayad, James R. Wilson, V. Bhardwaj, R. Cowan, E. A. Kravchenko, Elisa Guido, J. L. Ritchie, Herbert Koch, T. K. Pedlar, A. P. Onuchin, A. Chen, S. Martellotti, F. Martinez-Vidal, Marco Bomben, M. D. Sokoloff, S. E. Vahsen, A. J. S. Smith, P. R. Burchat, R. Calabrese, C. Cartaro, M. Rotondo, V. Vorobyev, U. Mallik, I. Pavelkin, G. Schnell, D. Cinabro, K. Griessinger, M. Iwasaki, D. Matvienko, P. F. Harrison, G. Cibinetto, A. Oyanguren, E. Luppi, S. Emery, M. Merola, Peter S. Kim, T. S. Miyashita, N. Neri, G. Vasseur, E. Paoloni, D. Y. Kim, B. K. Pal, B. G. Cheon, K. T. Kim, L. M. Cremaldi, R. B. Garg, B. Bhuyan, A. V. Gritsan, Shigeki Hirose, K. T. Flood, A. M. Eisner, Y. Iwasaki, R. Godang, Tao Luo, K. Tanida, F. Di Lodovico, B. G. Fulsom, G. De Nardo, J. Chauveau, M. T. Hedges, A. B. Kaliyar, J. K. Ahn, Y. J. Kwon, G. Eigen, I. M. Nugent, V. E. Blinov, S. Bettarini, T. E. Browder, D. J. Payne, M. Ebert, A. J. Bevan, M. Röhrken, K. Chilikin, H. M. Lacker, Tara Nanut, T. Kuhr, T. A. Shibata, H. Miyata, T. Aushev, R. Sacco, A. J. Schwartz, E. Grauges, V. V. Zhulanov, G. Inguglia, O. Schneider, T. Uglov, V. Savinov, A. Palano, C. P. Jessop, S. M. Spanier, Alessandro Pilloni, J. Ocariz, R. Mizuk, Mario Giorgi, M. Heß, H. Kichimi, E. Won, M. K. Sullivan, Yu. G. Kolomensky, D. W. G. S. Leith, H. Atmacan, J. P. Lees, D. R. Peimer, H. Ono, D. G. Hitlin, Bingran Wang, S. Zakharov, Semen Eidelman, David Hutchcroft, L. Li Gioi, A. Zupanc, Wu S. L., K. Hayasaka, G. Calderini, E. Nakano, F. Simonetto, J. Va’vra, D. S. Chao, M. Davier, R. Cenci, R. Cheaib, R. Waldi, A. Zallo, S. Korpar, V. P. Druzhinin, C. Bozzi, G. Cowan, Noritaka Shimizu, J. M. LoSecco, M. V. Purohit, Douglas Wright, L. Zani, R. Gorodeisky, P. Patteri, M. Fritsch, D. A. Roberts, Yu. I. Skovpen, B. Dey, P. Ongmongkolkul, K. Honscheid, M. Piccolo, F. Forti, J. J. Walsh, R. Kroeger, M. E. Sevior, I. S. Lee, A. M. Lutz, R. J. Barlow, R. Stroili, M. T. Graham, A. Hafner, J. M. Roney, Z. Drásal, J. Albert, K. Senyo, E. M. T. Puccio, X. C. Lou, G. Batignani, V.E. Shebalin, Somnath Choudhury, N. Guttman, A. Kuzmin, J. G. Shiu, G. Wormser, K. K. Joo, Y. Unno, M. Posocco, J. G. Smith, S. Al Said, K. Inami, C. Z. Yuan, J. Cochran, E. Ben-Haim, C. Hast, M. Heck, D. J. Lange, G. Piredda, Hamad Ahmed, W. J. Wisniewski, G. Marchiori, S. Ogawa, G. D. Lafferty, Y. B. Li, H. A. Neal, V. Santoro, J. Libby, M. Lubej, W. Dunwoodie, A. M. Rossi, S. Passaggio, W. Panduro Vazquez, S. Uno, C. Schwanda, Tim Adye, V. B. Golubev, U. Tamponi, Y. Choi, K. J. Nath, G. Casarosa, L. Santelj, E. Waheed, R. D. Kass, A. Roodman, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, S. Jia, R. M. Seddon, J. M. Izen, Crisostomo Sciacca, D. Aston, M. Nayak, M. Uchida, F. Ferroni, A. R. Buzykaev, G. Rizzo, M. Rama, L. Lanceri, So R. Y., A. Beaulieu, Y. Seino, J. A. McKenna, C. H. Cheng, T. J. Gershon, D. Liventsev, Y. Jin, C. H. Wang, S. Paul, Martino Margoni, S. Pardi, T. Müller, K. Sumisawa, D. M. Asner, T. E. Latham, M. Carpinelli, Ju-Young Kim, Maurizio Biasini, D. R. Muller, G. S. Varner, R. de Sangro, Stephen Robert Wagner, Y. Yusa, K. R. Schubert, A. K. Giri, Tamara Vazquez Schroeder, R. Itoh, C. L. Davis, Elisa Manoni, Li L. K., I. M. Peruzzi, Owen Rosser Long, M. Masuda, C. B. Van Hulse, G. B. Mohanty, J. A. Ernst, S. I. Serednyakov, F. Bianchi, L. Sun, S. Dittrich, P. K. Resmi, M. Gelb, Pu Wang, R. Kowalewski, Peter Kodys, A. Garmash, W. W. Jacobs, V. Bansal, G. R. Bonneaud, J. Dorfan, S. Di Carlo, G. Karyan, P. K. Behera, M. Verderi, N. Arnaud, A.E. Bondar, M. Takizawa, C. Touramanis, Z. Doležal, O. Grünberg, P. Taras, E. P. Solodov, O. Seon, Frank Simon, Y. Sakai, S. Prell, I. Garzia, V. Poireau, A. Soffer, A. Lusiani, N. Dash, E. Solovieva, Li Y. B., R. C. Field, G. Finocchiaro, M. S. Alam, S. Cunliffe, B. Oberhof, L. E. Piilonen, G. Pakhlova, R. Kulasiri, T. Hara, T. Julius, W. Gradl, T. Mori, H. Aihara, B. N. Ratcliff, S. Luitz, F. Tenchini, T. Sumiyoshi, Martin Ritter, Z. P. Zhang, T. Sanuki, B. G. Pushpawela, Jyoti Prakash Biswal, D. Bettoni, V. Gaur, M. Nakao, B. Echenard, Florian Urs Bernlochner, J. MacNaughton, C. Patrignani, V. Tisserand, M. Bračko, A. M. Bakich, Sw. Banerjee, G. Simi, D. Červenkov, E. Gabathuler, W. R. Innes, F. C. Porter, M. Chrzaszcz, and C. Voß
Subjects: Physics, Particle physics, Unitarity, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Dalitz plot, 01 natural sciences, B-factory, KEKB, 0103 physical sciences, CP violation, 010306 general physics
Abstract: We report measurements of sin2β and cos2β using a time-dependent Dalitz plot analysis of B0→D(*)h0 with D→KS0π+π- decays, where the light unflavored and neutral hadron h0 is a π0, η, or ω meson. The analysis uses a combination of the final data sets of the BaBar and Belle experiments containing 471×106 and 772×106 BB¯ pairs collected at the ϒ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure sin2β=0.80±0.14(stat)±0.06(syst)±0.03(model) and cos2β=0.91±0.22(stat)±0.09(syst)±0.07(model). The result for the direct measurement of the angle is β=(22.5±4.4(stat)±1.2(syst)±0.6(model))°. The last quoted uncertainties are due to the composition of the D0→KS0π+π- decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics e+e-→cc¯ data sample as part of this analysis. We find the first evidence for cos2β>0 at the level of 3.7 standard deviations. The measurement excludes the trigonometric multifold solution π/2-β=(68.1±0.7)° at the level of 7.3 standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of β=0° is ruled out at the level of 5.1 standard deviations, and thus CP violation is observed in B0→D(*)h0 decays. The measurement assumes no direct CP violation in B0→D(*)h0 decays.
Published: 2018

10. Measurement of time-dependent CP violation parameters in B(0)→K(0)(S)K(0)(S)K(0)(S) decays at Belle

Author: K. H., Kang, H., Park, T., Higuchi, K., Miyabayashi, K., Sumisawa, I., Adachi, J. K., Ahn, H., Aihara, S., Al Said, D. M., Asner, V., Aulchenko, T., Aushev, R., Ayad, V., Babu, S., Bahinipati, A. M., Bakich, P., Behera, C., Beleño, J., Bennett, V., Bhardwaj, T., Bilka, J., Biswal, G., Bonvicini, A., Bozek, M., Bračko, T. E., Browder, M., Campajola, L., Cao, D., Červenkov, M.-C., Chang, V., Chekelian, A., Chen, B. G., Cheon, K., Chilikin, K., Cho, S.-K., Choi, Y., Choi, D., Cinabro, S., Cunliffe, N., Dash, G., De Nardo, Z., Doležal, T. V., Dong, S., Eidelman, J. E., Fast, T., Ferber, B. G., Fulsom, R., Garg, V., Gaur, N., Gabyshev, A., Garmash, A., Giri, P., Goldenzweig, B., Golob, D., Greenwald, Y., Guan, O., Hartbrich, K., Hayasaka, H., Hayashii, M., Hernandez Villanueva, W.-S., Hou, C.-L., Hsu, K., Inami, G., Inguglia, A., Ishikawa, M., Iwasaki, Y., Iwasaki, W. W., Jacobs, E.-J., Jang, H. B., Jeon, S., Jia, Y., Jin, K. K., Joo, A. B., Kaliyar, G., Karyan, T., Kawasaki, H., Kichimi, C., Kiesling, C. H., Kim, D. Y., Kim, K.-H., Kim, S. H., Kim, Y.-K., Kim, K., Kinoshita, P., Kodyš, S., Korpar, D., Kotchetkov, P., Križan, R., Kroeger, P., Krokovny, R., Kulasiri, R., Kumar, A., Kuzmin, Y.-J., Kwon, J. S., Lange, I. S., Lee, S. C., Lee, J., Li, L. K., Li, Y. B., Li, L., Li Gioi, J., Libby, K., Lieret, D., Liventsev, J., MacNaughton, C., MacQueen, M., Masuda, T., Matsuda, D., Matvienko, M., Merola, H., Miyata, R., Mizuk, G. B., Mohanty, T. J., Moon, T., Mori, T., Morii, M., Mrvar, R., Mussa, M., Nakao, H., Nakazawa, Z., Natkaniec, M., Nayak, N. K., Nisar, S., Nishida, K., Nishimura, K., Ogawa, S., Ogawa, H., Ono, Y., Onuki, P., Oskin, P., Pakhlov, G., Pakhlova, S., Pardi, S.-H., Park, S., Patra, S., Paul, T. K., Pedlar, R., Pestotnik, L. E., Piilonen, T., Podobnik, V., Popov, E., Prencipe, M. T., Prim, M. V., Purohit, M., Ritter, M., Röhrken, A., Rostomyan, N., Rout, M., Rozanska, G., Russo, D., Sahoo, Y., Sakai, S., Sandilya, A., Sangal, L., Santelj, T., Sanuki, V., Savinov, G., Schnell, J., Schueler, C., Schwanda, A. J., Schwartz, Y., Seino, K., Senyo, M. E., Sevior, M., Shapkin, V., Shebalin, J.-G., Shiu, E., Solovieva, S., Stanič, M., Starič, Z. S., Stottler, T., Sumiyoshi, W., Sutcliffe, M., Takizawa, U., Tamponi, K., Tanida, F., Tenchini, K., Trabelsi, M., Uchida, T., Uglov, Y., Unno, S., Uno, P., Urquijo, Y., Ushiroda, G., Varner, A., Vinokurova, V., Vorobyev, C. H., Wang, E., Wang, M.-Z., Wang, P., Wang, X. L., Wang, S., Watanuki, E., Won, X., Xu, B. D., Yabsley, W., Yan, S. B., Yang, H., Ye, J. H., Yin, C. Z., Yuan, Y., Yusa, Z. P., Zhang, V., Zhilich, V., Zhukova, and V., Zhulanov
Subjects: High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: We measure the time-dependent CP violation parameters in B⁰ ->[Formula: see text] decays using 772 x [Formula: see text] over bar pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e⁻ collider. The obtained mixing-induced and direct CP asymmetries are -0.71 ± 0.23 (stat) ± 0.05 (syst) and 0.12 ± 0.16 (stat) ± 0.05 (syst), respectively. These values are consistent with the Standard Model predictions. The significance of CP violation differs from zero by 2.5 standard deviations.
Published: 2021

11. Measurement of time-dependent CP asymmetries in B0→KS0ηγ decays

Author: U. Tamponi, S. Jia, Soumen Paul, H. Aihara, Tagir Aushev, Y. Jin, C. H. Wang, Elisa Guido, M. Iwasaki, R. Ayad, K. Cho, T. Hara, G. Schnell, T. Iijima, H. Ye, Y. Usov, Byung Gu Cheon, I. Jaegle, T. Matsuda, S. Uno, T. Bilka, V.M. Aulchenko, Jyoti Prakash Biswal, Leo Piilonen, M. Watanabe, T. Kuhr, R. Itoh, A. Vossen, A. B. Kaliyar, S. Pardi, Yang Li, H. K. Moon, J. G. Shiu, J. S. Lange, S. Korpar, Peter Kodys, W. W. Jacobs, Pavel Krokovny, Frank Simon, J. MacNaughton, V.E. Shebalin, Andrey Sokolov, H. J. Kim, S. H. Kim, Y. Choi, K. J. Nath, M. Uchida, L. Santelj, L. K. Li, T. Nanut, R. Kulasiri, A. J. Schwartz, Dipak Kumar Sahoo, B. Pal, K. Trabelsi, Z. P. Zhang, W. S. Hou, S. Okuno, S. Di Carlo, A. Rostomyan, C. P. Shen, M. Sumihama, V. Gaur, H. Ono, R. Mizuk, G. Karyan, C. Z. Yuan, Y. Sakai, V. Chekelian, V. Vorobyev, V. Babu, S. Sandilya, S. Cunliffe, Phillip Urquijo, K. Senyo, K. Chilikin, E. Solovieva, N. Dash, Vikas Bansal, T. Ferber, S. Ogawa, Z. Natkaniec, M. Gelb, T. K. Pedlar, T. Kumita, Y. B. Li, G. Varner, E. Widmann, James E. Fast, G. B. Mohanty, E. Nakano, F. Tenchini, V.N. Zhilich, C. Beleño, D. Kotchetkov, C. Van Hulse, Shih-Chang Lee, Iki Adachi, P. Pakhlov, M. T. Hedges, Doo Young Kim, Y. Yusa, S. Al Said, Hitoshi Yamamoto, G. Inguglia, P. Wang, V. Zhukova, J. Haba, N. Gabyshev, D. Červenkov, Semen Eidelman, M. Takizawa, M. Salehi, K. Inami, Y. Iwasaki, Y. J. Kwon, R. Mussa, H. B. Jeon, K. Miyabayashi, J. B. Kim, E. Won, N. Shimizu, S. Nishida, R. Pestotnik, T. Uglov, O. Schneider, H. Nakano, I. Badhrees, G. Russo, H. Park, A. Ishikawa, Tao Luo, B. G. Fulsom, A. Bozek, C. Schwanda, Y. Seino, M. Nakao, A. K. Giri, K. Sumisawa, P. Križan, D. Cinabro, M. Nayak, C. Kiesling, Somnath Choudhury, B. Bhuyan, M. Masuda, S. Hirose, T. Kawasaki, Bingran Wang, T. Sumiyoshi, V. Savinov, J. Libby, D. M. Asner, M. Lubej, K. Hayasaka, J. F. Strube, M. Bračko, Xuejun Wang, Martin Ritter, B.A. Shwartz, Rocky Bala Garg, T. Sanuki, H. Hayashii, M. Starič, D. Liventsev, M. Z. Wang, K. Kinoshita, Vladimir Zhulanov, R. Kroeger, M. E. Sevior, I. S. Lee, P. Goldenzweig, Vladimir Popov, T. Julius, Samo Stanič, Kiyoshi Tanida, Z. Doležal, K. T. Kim, S. K. Choi, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, A. Garmash, S. Zakharov, A. Zupanc, M. Merola, Y. Guan, M. Niiyama, G. Pakhlova, and L. Li Gioi
Subjects: Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Detector, Resonance, 01 natural sciences, Symmetry (physics), law.invention, KEKB, law, 0103 physical sciences, CP violation, High Energy Physics::Experiment, Invariant mass, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, Collider, Astrophysics::Galaxy Astrophysics
Abstract: We report a measurement of time-dependent CP violation parameters in B0→KS0ηγ decays. The study is based on a data sample, containing 772×106BB¯ pairs, that was collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the CP violation parameters of S=-1.32±0.77(stat)±0.36(syst) and A=-0.48±0.41(stat)±0.07(syst) for the invariant mass of the KS0η system up to 2.1 GeV/c2.
Published: 2018

12. Measurements of the absolute branching fractions of B+→Xcc¯K+ and B+→D¯(*)0π+ at Belle

Author: V. Zhukova, V. Shebalin, V. Gaur, S. Hirose, C. S. Park, G. Varner, C. P. Shen, J. G. Shiu, T. Ferber, K. Sumisawa, W. W. Jacobs, D. Liventsev, H. B. Jeon, Leo Piilonen, B. G. Cheon, Frank Simon, B. Pal, A. Ishikawa, Pavel Krokovny, A. Zupanc, P. Goldenzweig, H. Park, V. Savinov, Meng Wang, K. H. Kang, A. J. Schwartz, J. B. Kim, S. Al Said, T. Kuhr, A. M. Bakich, K. K. Joo, Y. Seino, M. Nakao, S. Okuno, A. B. Kaliyar, A. Chen, Jyoti Prakash Biswal, V. Chekelian, Y. Unno, A. Kuzmin, P. Kodyš, Hitoshi Miyata, R. Mussa, T. A. Shibata, E. Won, H. Ono, H. Hayashii, Y. J. Kim, D. Kotchetkov, K. Trabelsi, V. Babu, M. Takizawa, S. Di Carlo, C. Schwanda, R. Kroeger, D. Cinabro, G. Karyan, A. Sokolov, V. Zhulanov, R. Pestotnik, M. Ritter, V. Bansal, H. Ye, Z. Drásal, V. Vorobyev, M. Nayak, S. H. Kim, J. F. Strube, A. Rostomyan, K. Chilikin, Y. Iwasaki, C. H. Wang, T. Luo, M. Merola, V. Zhilich, K. Kinoshita, Zhengkang Zhang, G. Inguglia, P. Wang, T. Nanut, C. H. Li, R. Itoh, Takao Mori, M. Watanabe, Wei-Shu Hou, M. Iwasaki, R. Ayad, Semen Eidelman, D. Greenwald, M. Masuda, T. Sumiyoshi, B. Bhuyan, O. Schneider, Y. Kato, Tagir Aushev, T. E. Browder, G. Pakhlova, E. Barberio, D. Y. Kim, S. Watanuki, D. Dutta, E. Guido, Samo Korpar, P. Urquijo, M. Bračko, M. Gelb, J. S. Lange, T. Julius, C. Z. Yuan, K. Inami, J. Libby, K. E. Varvell, Y. Yamashita, L. Li Gioi, Y. Sakai, F. Tenchini, H. Kichimi, Prafulla Kumar Behera, Y. Choi, T. Uglov, R. Mizuk, H. K. Moon, Li-Xin Li, S. Uehara, Toru Iijima, Y. Jin, E. Nakano, R. Cheaib, Iki Adachi, H. Aihara, M. Salehi, G. Schnell, T. Czank, K. Senyo, U. Tamponi, Y. Usov, S. Ogawa, K. Cho, Kiyoshi Tanida, Z. Doležal, E. Widmann, S. K. Choi, C. W. Park, A. Garmash, P. Pakhlov, M. Niiyama, D. Epifanov, C. Van Hulse, M. T. Hedges, J. Haba, S. Nishida, I. Badhrees, V. Bhardwaj, N. Gabyshev, Z. Natkaniec, B. G. Fulsom, I. S. Lee, Y. Yusa, S. Sandilya, T. K. Pedlar, D. M. Asner, M. Lubej, K. Hayasaka, P. Chang, S. Uno, A. Bozek, V. Aulchenko, N. Dash, E. Solovieva, R. Kulasiri, K. Miyabayashi, T. Matsuda, J. Yelton, S. Paul, I. Jaegle, N. K. Nisar, M. Sumihama, Y-J Kwon, M. Starič, M. E. Sevior, T. Kawasaki, Y. Sato, M. Uchida, J. E. Fast, K. J. Nath, G. B. Mohanty, C. Kiesling, D. Červenkov, and P. Križan
Subjects: Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Analytical chemistry, Resonance, Branching (polymer chemistry), 01 natural sciences, KEKB, Nuclear magnetic resonance, 0103 physical sciences, 010306 general physics, X(3872), Bar (unit)
Abstract: We present the measurement of the absolute branching fractions of B+ -> Xc (c) over barK+ and B+ -> (D) over bar ((*)0)pi(+) decays, using a data sample of 772 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Here, X-c (c) over bar denotes eta(c), J/psi, chi(c0), chi(c1), eta(c) (2S), psi(2S), psi(3770), X(3872), and X(3915). We do not observe significant signals for X(3872) or X(3915) and set the 90% confidence level upper limits at B(B+ -> X(3872)K+) X(3915)K+) X(3872)K+) to date and the first limit for B(B+ -> X(3915)K+). The measured branching fractions for eta(c) and eta(c)(2S) are the most precise to date, B(B+ -> eta K-c(+)) = (12.0 +/- 0.8 +/- 0.7) x 10(-4) and B(B+ -> eta(c)(2S)K+) = (4.8 +/- 1.1 +/- 0.3) x 10(-4), where the first and second uncertainties are statistical and systematic, respectively.
Published: 2018

13. Measurement of the τ lepton polarization and R(D) in the decay B¯→Dτ−ν¯τ with one-prong hadronic τ decays at Belle

Author: H. Aihara, A. Rostomyan, K. Chilikin, R. Garg, T. Aziz, Takuya Higuchi, U. Tamponi, M. Sumihama, I. Badhrees, N. Gabyshev, B. G. Fulsom, S. Ogawa, I. S. Lee, C. Z. Yuan, Iki Adachi, T. Kawasaki, M. T. Hedges, J. Haba, Doo Young Kim, V. Zhulanov, E. Widmann, D. M. Asner, M. Lubej, K. Hayasaka, M. Uchida, T. E. Browder, P. Chang, A. Bozek, S. Uno, V. Babu, S. Di Carlo, J. Libby, K. E. Varvell, Kiyoshi Tanida, S. H. Kim, S. Hirose, J. F. Strube, A. Zupanc, G. Karyan, Tagir Aushev, Y. Guan, Meng Wang, M. Iwasaki, Y. Yusa, M. Salehi, G. Schnell, T. Czank, V. Gaur, S. Sandilya, Pavel Krokovny, P. Kodyš, R. Mussa, A. J. Schwartz, C. Van Hulse, S. K. Choi, P. Goldenzweig, Z. Doležal, J. G. Shiu, N. Dash, E. Solovieva, H. Yamamoto, Y. Jin, E. Won, H. Ono, S. Nishida, Y. Choi, G. Varner, Anjan K. Giri, H. Ye, K. Hara, V. Popov, K. Adamczyk, C. H. Wang, V. Bhardwaj, H. Atmacan, J. E. Fast, Leo Piilonen, Kouji Nakamura, N. K. Nisar, B. Golob, G. B. Mohanty, Y-J Kwon, M. Starič, M. E. Sevior, M. Berger, Z. Natkaniec, V. Zhukova, Y. Sato, K. H. Kang, A. Vossen, N. Shimizu, X. L. Wang, V. Shebalin, T. Uglov, M. Rozanska, A. Bondar, A. Sokolov, R. Kroeger, Jyoti Prakash Biswal, S. Wehle, F. Tenchini, Soumya D. Mohanty, Frank Simon, V. Zhilich, P. Križan, T. Ferber, K. Senyo, P. Wang, K. Kinoshita, S. Al Said, T. Kuhr, R. Pestotnik, R. Kulasiri, K. Miyabayashi, R. Kumar, A. M. Bakich, T. Matsuda, T. A. Shibata, Takao Mori, Samo Korpar, J. Stypula, D. Dutta, R. Ayad, Y. J. Kim, E. Guido, K. Cho, S. Paul, C. W. Park, T. Sumiyoshi, B. Bhuyan, K. J. Nath, I. Jaegle, Wei-Shu Hou, C. Schwanda, Junho Kim, T. Julius, D. Cinabro, D. Červenkov, A. Garmash, A. Kuzmin, M. Niiyama, M. Gelb, J. S. Lange, K. Trabelsi, V. Bansal, V. Vorobyev, L. Li Gioi, H. K. Moon, Zhengkang Zhang, A. Chen, T. Nanut, D. Kotchetkov, Toru Iijima, R. Itoh, D. Liventsev, Semen Eidelman, P. Urquijo, K. Sumisawa, H. B. Jeon, B. Pal, A. Ishikawa, H. Park, Y. Seino, M. Nakao, M. C. Chang, C. L. Hsu, O. Schneider, H. Miyata, K. Inami, Y. Yamashita, B. G. Cheon, V. Chekelian, S. Okuno, H. Hayashii, S. Zakharov, L. K. Li, Yang Li, Y. Sakai, Sayantan Choudhury, M. Takizawa, G. Inguglia, M. Bračko, M. Ritter, and S. Pardi
Subjects: Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Polarization (waves), 01 natural sciences, KEKB, Full data, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: With the full data sample of $772\ifmmode\times\else\texttimes\fi{}{10}^{6}\text{ }\text{ }B\overline{B}$ pairs recorded by the Belle detector at the KEKB electron-positron collider, the decay $\overline{B}\ensuremath{\rightarrow}{D}^{*}{\ensuremath{\tau}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}}$ is studied with the hadronic $\ensuremath{\tau}$ decays ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ and ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{\ensuremath{-}}{\ensuremath{\nu}}_{\ensuremath{\tau}}$. The $\ensuremath{\tau}$ polarization ${P}_{\ensuremath{\tau}}({D}^{*})$ in two-body hadronic $\ensuremath{\tau}$ decays is measured, as well as the ratio of the branching fractions $R({D}^{*})=\mathcal{B}(\overline{B}\ensuremath{\rightarrow}{D}^{*}{\ensuremath{\tau}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\tau}})/\mathcal{B}(\overline{B}\ensuremath{\rightarrow}{D}^{*}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}})$, where ${\ensuremath{\ell}}^{\ensuremath{-}}$ denotes an electron or a muon. Our results, ${P}_{\ensuremath{\tau}}({D}^{*})=\ensuremath{-}0.38\ifmmode\pm\else\textpm\fi{}0.51{(\text{stat})}_{\ensuremath{-}0.16}^{+0.21}(\text{syst})$ and $R({D}^{*})=0.270\ifmmode\pm\else\textpm\fi{}0.035{(\text{stat})}_{\ensuremath{-}0.025}^{+0.028}(\text{syst})$, are consistent with the theoretical predictions of the standard model. The polarization values of ${P}_{\ensuremath{\tau}}({D}^{*})g+0.5$ are excluded at the 90% confidence level.
Published: 2018

14. Study of η and dipion transitions in ϒ(4S) decays to lower bottomonia

Author: T. Aushev, A. M. Bakich, D. Cinabro, Z. Natkaniec, K. T. Kim, R. Gillard, E. Widmann, S. K. Choi, G. Inguglia, V. Zhukova, N. Gabyshev, D. Červenkov, D. Epifanov, X. L. Wang, T. Ferber, K. Chilikin, T. K. Pedlar, K. Tanida, T. Matsuda, V.N. Zhilich, S. Uno, A. Vinokurova, S. H. Kim, P. Krokovny, K. H. Kang, K. Cho, B. Bhuyan, S. Pardi, M. T. Hedges, S. Watanuki, K. Inami, M. Uchida, V.E. Shebalin, K. K. Joo, T. E. Browder, Elisa Guido, A.E. Bondar, A. Garmash, E. Won, D. Matvienko, R. Mussa, V. Bhardwaj, E. Solovieva, M. Takizawa, H. B. Jeon, C. S. Park, K. Miyabayashi, I. Badhrees, A. Bobrov, V. Savinov, A. Ishikawa, Z. Doležal, D. M. Asner, K. Kinoshita, U. Tamponi, M. Nakao, V. Gaur, G. S. Varner, M. Watanabe, T. Luo, Vikas Bansal, G. Schnell, T. Iijima, S. Sandilya, P. Križan, Soumen Paul, J. Libby, P. Pakhlov, M. Lubej, K. Hayasaka, C. H. Li, B.A. Shwartz, E. Nakano, M. J. Kim, T. Nanut, W. S. Hou, R. Pestotnik, Y. Yamashita, Philip Lewis, P. Wang, M. Starič, M. Gelb, C. Van Hulse, Andrey Sokolov, Z. Drásal, M. Bračko, D. Liventsev, D. Kotchetkov, H. Ye, Y. Seino, B. G. Fulsom, H. Park, A. Bozek, T. A. Shibata, Vladimir Zhulanov, Y. Jin, T. Kumita, V. Vorobyev, M. E. Sevior, H. Farhat, B. Pal, H. Miyata, Prafulla Kumar Behera, S. Al Said, P. Goldenzweig, G. Pakhlova, James E. Fast, C. Z. Yuan, K. Trabelsi, C. P. Shen, A. Kuzmin, S. Ogawa, J. F. Strube, H. Hayashii, Liangbin Li, S. Nishida, S.I. Eidelman, S. Jia, D. Joffe, A. Rostomyan, V. Chekelian, A. Vossen, T. Kawasaki, Y. Iwasaki, Y. J. Kwon, C. H. Wang, H. K. Moon, J. S. Lange, Frank Simon, R. Itoh, J. Haba, Y. Choi, K. J. Nath, L. Santelj, M. Nayak, O. Schneider, Y. Sakai, L. Li Gioi, T. Uglov, Yongsun Kim, Byung Gu Cheon, I. Jaegle, K. M. Williams, M. Merola, A. Chen, C. Schwanda, K. Senyo, S. Korpar, A. Zupanc, J. G. Shiu, M. Niiyama, F. Tenchini, T. Sumiyoshi, C. Pulvermacher, Martin Ritter, T. Sanuki, L. E. Piilonen, Y. Watanabe, N. Dash, T. Julius, V.M. Aulchenko, R. Kulasiri, Jyoti Prakash Biswal, Peter Kodys, W. W. Jacobs, S. Di Carlo, G. Karyan, Yoshinobu Unno, K. Sumisawa, M. Masuda, T. Hara, T. Mori, H. Aihara, Y. Usov, N. K. Nisar, Z. P. Zhang, I. Adachi, J. B. Kim, R. Ayad, D. Y. Kim, H. Ono, and R. Mizuk
Subjects: Physics, KEKB, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Hadron, Pi, Analytical chemistry, Resonance, 010306 general physics, 01 natural sciences
Abstract: We study hadronic transitions between bottomonium states using 496 fb(-1) data collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. We measure: B(gamma(4S) -> pi(+)pi(-)gamma(1S)) = (8.2 +/- 0.5(stat.)+/- 0.4(syst.)) x 10(-5), B(gamma(4S) -> pi(+)pi(-)gamma(2S)) = (7.9 +/- 1.0(stat.)+/- 0.4(syst.)) x 10(-5), and B(gamma(4S) -> eta gamma(1S)) = (1.70 +/- 0.23(stat.) +/- 0.08(syst.)) x 10(-4). We measure the ratio of branching fractions R=B(gamma(4S) -> eta gamma(1S))/B(gamma(4S) -> pi(+)pi(-)gamma(1S)) = 2.07 +/- 0.30(stat.)+/- 0.11(syst.). We search for the decay gamma(1(3)D(1,2)) -> eta gamma(1S), but do not find significant evidence for such a transition. We also measure the initial state radiation production cross sections of the gamma(2S,3S) resonances and we find values compatible with the expected ones. Finally, the analysis of the gamma(4S) -> pi(+)pi(-)gamma(1S) events shows indications for a resonant contribution due to the f(0)(980) meson.
Published: 2017

15. Invariant-mass and fractional-energy dependence of inclusive production of dihadrons in e+e− annihilation at s=10.58 GeV

Author: Z. Drásal, G. Schnell, T. Iijima, P. Pakhlov, Eberhard Widmann, H. Park, G. Pakhlova, S. Nishida, Y. Yamashita, A. Bozek, L. Li Gioi, D. Joffe, T. Aushev, H. Ye, H. Farhat, A. Garmash, T. Ferber, K. Tanida, Liangbin Li, N. Dash, A. Zupanc, Y. Choi, V. Chekelian, K. J. Nath, W. S. Hou, K. T. Kim, D. Kotchetkov, B. Pal, L. Santelj, Eleonora Guido, R. Gillard, M. Uchida, K. Sumisawa, Y. Sakai, A. Chen, B. Bhuyan, S. K. Choi, V. Vorobyev, V. Bhardwaj, M. Masuda, J. G. Shiu, A. M. Bakich, T. E. Browder, Jyoti Prakash Biswal, C. P. Shen, Z. Natkaniec, D. Matvienko, M. J. Kim, M. Starič, A. Bobrov, G. S. Varner, Soumen Paul, T. Luo, V. Savinov, R. Kulasiri, T. A. Shibata, H. Miyata, A. Rostomyan, P. Wang, A. Vossen, Prafulla Kumar Behera, D. Cinabro, E. Won, N. Gabyshev, D. Červenkov, R. Pestotnik, S.I. Eidelman, T. K. Pedlar, Frank Simon, B. G. Fulsom, V.E. Shebalin, H. Hayashii, K. K. Joo, M. Watanabe, J. F. Strube, M. Lubej, V. Zhukova, M. Niiyama, B. G. Cheon, F. Tenchini, Peter Kodys, D. M. Asner, T. Matsuda, S. Uno, T. Sumiyoshi, V. Gaur, T. Kumita, R. Itoh, W. W. Jacobs, S. Jia, M. Takizawa, V.N. Zhilich, Y. Watanabe, S. Korpar, K. Chilikin, C. Pulvermacher, Z. Doležal, S. H. Kim, P. Krokovny, C. H. Wang, E. Solovieva, S. Al Said, H. K. Moon, K. H. Kang, K. Cho, J. S. Lange, M. Merola, I. Jaegle, K. Miyabayashi, K. Inami, Y. Iwasaki, Yongsun Kim, C. Schwanda, T. Mori, H. Aihara, Martin Ritter, S. Di Carlo, Y. J. Kwon, I. Badhrees, G. Karyan, N. K. Nisar, M. Bračko, O. Schneider, Z. P. Zhang, K. Kinoshita, U. Tamponi, K. Senyo, Vikas Bansal, L. E. Piilonen, E. Nakano, J. Haba, S. Pardi, C. Van Hulse, B.A. Shwartz, D. Liventsev, Vladimir Zhulanov, Y. Jin, J. Libby, K. Hayasaka, T. Julius, M. E. Sevior, P. Goldenzweig, Y. Seino, Shoichi Watanuki, R. Seidl, I. Adachi, J. B. Kim, H. Ono, R. Mizuk, Y. Unno, R. Ayad, D. Y. Kim, R. Mussa, H. B. Jeon, A. Ishikawa, M. Nakao, A. Kuzmin, P. Križan, S. Ogawa, Andrey Sokolov, James E. Fast, Tara Nanut, and T. Uglov
Subjects: Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Parton, 01 natural sciences, Nuclear physics, Pion, KEKB, 0103 physical sciences, High Energy Physics::Experiment, Invariant mass, Nuclear Experiment, 010306 general physics, Nucleon
Abstract: The inclusive cross sections for dihadrons of charged pions and kaons (e(+)e(-) -> hhX) in electron-positron annihilation are reported. They are obtained as a function of the total fractional energy and invariant mass for any di-hadron combination in the same hemisphere as defined by the thrust event-shape variable and its axis. Since same-hemisphere dihadrons can be assumed to originate predominantly from the same initial parton, di-hadron fragmentation functions are probed. These di-hadron fragmentation functions are needed as an unpolarized baseline in order to quantitatively understand related spindependent measurements in other processes and to apply them to the extraction of quark transversity distribution functions in the nucleon. The di- hadron cross sections are obtained from a 655 fb(-1) data sample collected at or near the Y (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
Published: 2017

16. Measurement of branching fraction and direct CP asymmetry in charmless B+→K+K−π+ decays at Belle

Author: Kevin Varvell, S. Eidelman, T. Mori, H. Aihara, K. T. Kim, D. Y. Kim, D. Matvienko, Eberhard Widmann, L. Pesántez, Melissa K. Takahashi, O. Schneider, J. Libby, V. Bhardwaj, T. K. Pedlar, Y. Usov, Tao Luo, Jyoti Prakash Biswal, Y. Seino, R. Ayad, Yukinori Sato, I. Adachi, J. G. Shiu, H. Farhat, M. Masuda, G. B. Mohanty, J. B. Kim, H. Ono, T. Aushev, Y. Watanabe, B. Shwartz, V. Gaur, F. Tenchini, V.E. Shebalin, Phillip Urquijo, S. Okuno, Y. Unno, T. Matsuda, P. Goldenzweig, M. Nakao, Chawon Park, V. V. Zhulanov, H. Park, A. Bozek, D. Joffe, S. Sandilya, A.E. Bondar, K. Chilikin, M. J. Kim, G. Bonvicini, Martin Ritter, T. Sanuki, G. Schnell, M. Takizawa, C. B. Van Hulse, M. Starič, Y. Onuki, R. Mussa, H. B. Jeon, K. M. Williams, A. Ishikawa, D. Cinabro, Y.-T. Lai, Y-J Kwon, B. G. Cheon, M. T. Hedges, M. Lubej, G. Inguglia, B. Bhuyan, T. Bloomfield, Frank Simon, C. Kiesling, B. G. Fulsom, T. E. Browder, P. Krokovny, P. Chang, M. Nayak, M. E. Sevior, C.-L. Hsu, K. H. Kang, K. Cho, Z. Natkaniec, Y. Sakai, H. Hayashii, Hyunyong Kim, Ya-Qiu Jin, K. K. Joo, T. Kuhr, V. M. Aulchenko, M. Bračko, Z. P. Zhang, Peter Kodys, W. W. Jacobs, B. Golob, S. Al Said, P. Katrenko, V. Savinov, H. Miyata, K. Hayasaka, A. Zupanc, E. L. Barberio, S. Ogawa, T.-A. Shibata, Zdenek Dolezal, V.N. Zhilich, S. Korpar, N. K. Nisar, N. Dash, O. Grzymkowska, C. H. Wang, J. Haba, Z. Drásal, A. M. Bakich, A. Garmash, L. E. Piilonen, G. Pakhlova, R. Kulasiri, I. Jaegle, S. Paul, K. Miyabayashi, I. Badhrees, J. S. Lange, K. Senyo, S. Di Carlo, S. Nishida, E. Solovieva, Massimo Berger, L. Li Gioi, Y. Yamashita, N. Gabyshev, E. Waheed, T. Julius, E. Nakano, T. Kawasaki, K. Inami, Seok Kim, R. Mizuk, A. B. Kaliyar, R. Chistov, M. Z. Wang, D. Kotchetkov, P. K. Behera, H. Ye, F. Strube, Y. Choi, K. J. Nath, X. L. Wang, T. Hara, V. Chekelian, S. Uno, C. Schwanda, M. Uchida, L. K. Li, C. W. Park, E. Won, B. K. Pal, Eleonora Guido, C. H. Li, Victoria Zhukova, D. Liventsev, A. Chen, K. Sumisawa, D. M. Asner, J. E. Fast, D. Dossett, H. Atmacan, G. S. Varner, M. Watanabe, P. Krizan, Tara Nanut, T. Uglov, A. Rostomyan, W. S. Hou, Alexei Kuzmin, and V. Vorobyev
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, media_common.quotation_subject, Electron–positron annihilation, Resonance, 01 natural sciences, Asymmetry, Nuclear physics, KEKB, 0103 physical sciences, CP violation, Invariant mass, B meson, 010306 general physics, media_common
Abstract: We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K-pi(+). The results are based on a data sample that contains 772 x 10(6) B (B) over bar pairs collected at the Y (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38 +/- 0.40 +/- 0.35) x 10(-6) and -0.170 +/- 0.073 +/- 0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K- invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c(2), which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K- invariant-mass region.
Published: 2017

17. First measurement of T -odd moments in D0→KS0π+π−π0 decays

Author: G. Schnell, S. Ogawa, M. Starič, I. Jaegle, K. Miyabayashi, I. Badhrees, M. Z. Wang, K. Kinoshita, B. Shwartz, T. Kuhr, R. Mizuk, H. Ono, Y. Yusa, A. Garmash, H. Yamamoto, K. Senyo, D. Liventsev, Y. Unno, V. Babu, T. Kawasaki, T.-A. Shibata, A. Rostomyan, V. Chekelian, V. M. Aulchenko, Victoria Zhukova, I. Adachi, T. Aushev, Hua Ye, K. Sumisawa, D. M. Asner, A. Chen, M. Niiyama, L. Pesántez, B. K. Pal, P. Goldenzweig, T. Ferber, M. Salehi, T. Nanut, K. Inami, S. Sandilya, A. Zupanc, M. J. Kim, T. Matsuda, B. Bhuyan, A. M. Bakich, Seema Bahinipati, K. J. Nath, M. Uchida, Z. Drásal, T. Hara, L. Santelj, M. Masuda, B. G. Fulsom, L. K. Li, G. B. Mohanty, T. Kumita, G. Bonvicini, T. E. Browder, Z. P. Zhang, S. Nishida, H. Miyata, R. Ayad, R. Mussa, P. Wang, Massimo Berger, Hiroaki Aihara, A. J. Schwartz, A. Bozek, H. B. Jeon, A. Vinokurova, S. Uehara, D. Kotchetkov, Y. Iwasaki, Y. J. Kwon, P. Krokovny, Z. Natkaniec, A. Bobrov, P. Pakhlov, S. H. Kim, B. G. Cheon, D. Matvienko, C. Z. Yuan, E. Waheed, O. Schneider, K. Chilikin, Y. J. Kim, A. Ishikawa, Peter Kodys, K. H. Kang, K. Cho, W. W. Jacobs, Y. Sakai, E. Barberio, N. K. Nisar, H. K. Moon, K. Trabelsi, K. K. Joo, H. Park, C. P. Shen, A. Kuzmin, J. S. Lange, S. Di Carlo, M. Nayak, G. Karyan, Yukinori Sato, G. Varner, T. Uglov, A. B. Kaliyar, K. Hayasaka, S. Uno, J. G. Shiu, D. Epifanov, Samo Korpar, R. Pestotnik, M. T. Hedges, Ya-Qiu Jin, E. Won, H. Farhat, J. B. Kim, Phillip Urquijo, V. Bhardwaj, P. Križan, W. S. Hou, N. Dash, E. Solovieva, Rahul Kumar, V. Vorobyev, V.E. Shebalin, S. Al Said, Leo Piilonen, D. Joffe, A. Vossen, Frank Simon, C. Schwanda, Jyoti Prakash Biswal, T. Sumiyoshi, V. Gaur, Andrey Sokolov, M. Nakao, Chawon Park, V. V. Zhulanov, Y. Yook, Semen Eidelman, Y. Watanabe, T. Mori, D. Y. Kim, G. Pakhlova, R. Kulasiri, T. Julius, R. Chistov, R. Itoh, R. Sinha, F. Tenchini, C. Pulvermacher, Martin Ritter, T. Sanuki, L. Li Gioi, Y. Yamashita, K. T. Kim, Tao Luo, K. Tanida, D. Cinabro, Dipanwita Dutta, R. Gillard, C. Kiesling, C. H. Li, C. B. Van Hulse, M. Bračko, S. K. Choi, Eberhard Widmann, J. F. Strube, J. Libby, M. Lubej, K. Prasanth, Y. Seino, S. Okuno, N. Gabyshev, M. E. Sevior, I. S. Lee, J. E. Fast, A.E. Bondar, J. Haba, M. Takizawa, D. Červenkov, K. M. Williams, John Yelton, Y. Choi, Z. Doležal, Daniel Greenwald, V. Bansal, M. Watanabe, U. Tamponi, C. H. Wang, S. Paul, and V.N. Zhilich
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, media_common.quotation_subject, 01 natural sciences, Asymmetry, Belle experiment, Charm quark, Luminosity, Nuclear physics, KEKB, 0103 physical sciences, Pi, CP violation, 010306 general physics, media_common
Abstract: We report the first measurement of the T-odd moments in the decay D-0 -> K-S(0) pi + pi(-)pi(0) from a data sample corresponding to an integrated luminosity of 966 fb(-1) collected by the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider. From these moments we determine the CP-violation-sensitive asymmetry a(CP)(T-odd) = [-0.28 +/- 1.38 (stat.)(-0.76)(+0.23) (syst.)] x 10(-3) , which is consistent with no CP violation. In addition, we perform a(CP)(T-odd) measurements in different regions of the D-0 -> K-S(0) pi + pi(-)pi(0) phase space;these are also consistent with no CP violation.
Published: 2017

18. First observation of the decayB0→ψ(2S)π0

Author: L. E. Piilonen, S. Yashchenko, T. Julius, G. Schnell, K. Inami, E. L. Barberio, B. G. Cheon, G. Pakhlova, S. Korpar, W. S. Hou, T. K. Pedlar, C. Pulvermacher, J. Rauch, V. Vorobyev, A. M. Bakich, Z. Natkaniec, T. Mori, S. Sandilya, Y. Usov, N. Gabyshev, D. Červenkov, M. Uchida, O. Seon, Frank Simon, L. Li Gioi, M. Watanabe, A. Garmash, Y. Watanabe, J. G. Shiu, V. Chobanova, A. Drutskoy, T. Iijima, K. T. Kim, T. Aushev, H. Hayashii, N. Dash, M. J. Kim, E. Nakano, Phillip Urquijo, T. Schlüter, B. Golob, Z. P. Zhang, E. Ribežl, K. Trabelsi, M. Starič, J. Yamaoka, V. Bhardwaj, A. Vinokurova, T. Kuhr, H. K. Moon, G. S. Varner, T. Kumita, H. Ye, C. Van Hulse, R. Gillard, V. Babu, A. Zupanc, C. Kiesling, H. Sahoo, K. Sumisawa, S. H. Kim, P. Krokovny, Rakesh Kumar, K. Cho, T. Ferber, Ruslan Chistov, P. Wang, R. Mizuk, M. N. Wagner, Y. Iwasaki, Y. J. Kwon, T. Nanut, M. Z. Wang, K. Kinoshita, U. Tamponi, T. Sumiyoshi, Jasvinder A. Singh, Y. Sakai, Y. Teramoto, B. G. Fulsom, H. Li, M. Bračko, O. Schneider, Jyoti Prakash Biswal, Martin Ritter, T. Sanuki, M. Nayak, M. Sumihama, R. Mussa, H. B. Jeon, A. Ishikawa, Saraju P. Mohanty, A. Moll, A. Abdesselam, E. Solovieva, V. Gaur, C. W. Park, Peter Kodys, P. Križan, B. Pal, D. Cinabro, Yongsun Kim, P. Katrenko, Andrey Sokolov, S. Uno, M. Nakao, I. Jaegle, C. Schwanda, T. Uglov, T. Kawasaki, Hiroaki Aihara, J. Stypula, James E. Fast, C. Z. Yuan, T. A. Shibata, H. Miyata, K. Senyo, Prafulla Kumar Behera, O. Grzymkowska, C. H. Wang, S.I. Eidelman, K. Hayasaka, J. Haba, V.E. Shebalin, A. Kuzmin, J. Libby, B.A. Shwartz, Y. Seino, S. Ogawa, D. Liventsev, Vladimir Zhulanov, M. E. Sevior, I. S. Lee, I. Adachi, P. Goldenzweig, Yoshinobu Unno, J. B. Kim, M. Masuda, R. Ayad, Seema Bahinipati, S. Uehara, D. Y. Kim, V.N. Zhilich, K. Miyabayashi, E. Nedelkovska, H. Farhat, Y. S. Sohn, A. J. Schwartz, H. J. Kim, Marko Petrič, D. Matvienko, D. M. Asner, K. M. Williams, A. Chen, Z. Drásal, P. Pakhlov, H. Park, A. Bozek, B. Bhuyan, T. E. Browder, A. Bobrov, R. Pestotnik, V. Savinov, G. B. Mohanty, Y. Yusa, D. Joffe, I. Badhrees, Yang Li, S. Nishida, Y. Choi, N. K. Nisar, T. Hara, Liangbin Li, Y. M. Goh, J. Dalseno, V. Chekelian, Soumen Paul, E. Kato, Sunmin Ryu, K. K. Joo, E. Won, P. Vanhoefer, John Yelton, Z. Doležal, and X. L. Wang
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Detector, 01 natural sciences, law.invention, KEKB, law, 0103 physical sciences, 010306 general physics, Collider, Bar (unit)
Abstract: We report a measurement of the B-0 -> psi(2S)pi(0) branching fraction based on the full Upsilon(4S) data set of 772 x 10(6) B (B) over bar pairs collected by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain B(B-0 -> psi(2S)pi(0)) = (1.17 +/- 0.17(stat) +/- 0.08(syst)) x 10(-5). The result has a significance of 7.2 standard deviations and is the first observation of the decay B-0 -> psi(2S)pi(0).
Published: 2016

19. Inclusive cross sections for pairs of identified light charged hadrons and for single protons ine+e−ats=10.58 GeV

Author: S. Al Said, F. Giordano, G. Pakhlova, H. Sahoo, H. Farhat, K. Inami, J. Libby, Z. P. Zhang, Hirokazu Miyake, Y. Iwasaki, Y. J. Kwon, R. Mizuk, Y. Yusa, R. Seidl, Saraju P. Mohanty, A. Moll, D. Joffe, C. L. Hsu, I. Adachi, J. G. Shiu, B. Pal, X. H. He, Y. Seino, V. Babu, M. Z. Wang, U. Tamponi, H. Hayashii, T. Iijima, Hiroaki Aihara, Y. S. Sohn, O. Schneider, Y. Watanabe, L. Li Gioi, I. Badhrees, I. Jaegle, Yongsun Kim, D. Cinabro, J. B. Kim, J. Yamaoka, R. Mussa, A.S. Kuzmin, H. J. Kim, M. Ritter, T. Uglov, Jyoti Prakash Biswal, C. H. Wang, S. Uno, C. Schwanda, K. Senyo, Jung-Hyun Kim, R. Ayad, A. Ishikawa, E. Nakano, A. Abdesselam, V. Gaur, T. A. Shibata, H. Miyata, S.I. Eidelman, W. S. Hou, T. Sumiyoshi, K. Chilikin, C. W. Park, D. Y. Kim, S. Okuno, M. J. Kim, M. Nakao, Jochen Dingfelder, S. H. Kim, P. Krokovny, C. Van Hulse, Y. Choi, N. K. Nisar, E. Ribežl, T. Hara, P. Križan, L. Santelj, John Yelton, Z. Doležal, M. Starič, T. Sanuki, Dipanwita Dutta, K. Hayasaka, K. H. Kang, K. Cho, L. E. Piilonen, A. Garmash, V. Vorobyev, A. M. Bakich, Z. Natkaniec, S. Ogawa, B. G. Cheon, J. Haba, M. Masuda, Y. Teramoto, M. Watanabe, Y. M. Goh, P. Lukin, Yueh-Feng Liu, Andrey Sokolov, J. Dalseno, S. Yashchenko, K. T. Kim, E. L. Barberio, A. Vossen, T. K. Pedlar, D. Liventsev, R. Gillard, S. Sandilya, E. Kato, Vladimir Zhulanov, Sunmin Ryu, R. Pestotnik, M. E. Sevior, P. Goldenzweig, K. K. Joo, E. Won, T. Aushev, James E. Fast, Z. Drásal, T. Mori, M. Niiyama, M. Sumihama, K. Sumisawa, L. Li, Marko Petrič, V.E. Shebalin, N. Gabyshev, D. Červenkov, K. Sakai, O. Seon, Frank Simon, P. Vanhoefer, Y. Usov, T. Nanut, T. Ferber, M. Nayak, Peter Kodys, D. Matvienko, W. W. Jacobs, P. Katrenko, B. Golob, H. K. Moon, J. S. Lange, N. Dash, V. Bhardwaj, D. M. Asner, Samo Korpar, Y. Sakai, G. Schnell, E. Solovieva, Yoshinobu Unno, K. M. Williams, A. Chen, V. Trusov, D. H. Lee, M. Bračko, C. Oswald, T. Kawasaki, M. Uchida, V. Chobanova, G. S. Varner, R. Itoh, P. Wang, M. N. Wagner, B. G. Fulsom, V.N. Zhilich, K. Miyabayashi, B. Bhuyan, T. E. Browder, V. Savinov, S. Nishida, A. Rostomyan, V. Chekelian, P. Pakhlov, H. Park, and A. Bozek
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Nuclear Theory, Hadron, 01 natural sciences, Nuclear physics, KEKB, Pion, Fragmentation (mass spectrometry), 0103 physical sciences, Fragmentation function, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: We report the first double differential cross sections of two charged pions and kaons (e(+)e(-) -> hhX) in electron-positron annihilation as a function of the fractional energies of the two hadrons for any charge and hadron combination. The dependence of these dihadron cross sections on the topology (same, opposite hemisphere or anywhere) is also studied with the help of the event shape variable thrust and its axis. The ratios of these dihadron cross sections for different charges and hadron combinations directly shed light on the contributing fragmentation functions. For example, we find that the ratio of same-sign pion pairs over opposite-sign pion pairs drops toward higher fractional energies where disfavored fragmentation is expected to be suppressed. These dihadron results are obtained from a 655 fb(-1) data sample collected near the gamma (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Extending the previously published single-pion and single-kaon cross sections, single-proton (e(+)e(-) -> pX) cross sections are extracted from a 159 fb(-1) data subsample.
Published: 2015

20. Study ofD**production and light hadronic states in theB¯0→D*+ωπ−decay

Author: Z. DoleŽal, G. Inguglia, G. B. Mohanty, Jung-Hyun Kim, B.A. Shwartz, R. Mizuk, D. Joffe, M. Starič, D. H. Lee, D. A. Epifanov, D. Liventsev, Vladimir Zhulanov, M. E. Sevior, Y. Teramoto, P. Goldenzweig, T. Kawasaki, Jyoti Prakash Biswal, Y. S. Sohn, Y. Watanabe, N. K. Nisar, L. Santelj, D. Getzkow, G. Pakhlova, A.S. Kuzmin, Seema Bahinipati, R. Mussa, E. Won, D. Matvienko, Y. M. Goh, A. Abdesselam, M. Petrič, Jochen Dingfelder, L. Pesántez, O. Seon, A. Drutskoy, I. Adachi, M. Sumihama, H. Miyata, V. Chobanova, L. Li Gioi, A. Garmash, Y. Choi, M. Nayak, S. Nishida, K. M. Williams, T. Ferber, R. Itoh, P. Wang, M. N. Wagner, A. Chen, M. Steder, C. W. Park, H. Park, B. G. Fulsom, S. Uehara, W. S. Hou, S. Korpar, Toru Iijima, C. Pulvermacher, J. B. Kim, E. Ribežl, A. Zupanc, O. Schneider, Z. P. Zhang, V.N. Zhilich, C. P. Shen, V. Vorobyev, K. T. Kim, T. E. Browder, S. Uno, H. Hayashii, K. Hayasaka, J. Dalseno, M. Uchida, V. Bhardwaj, H. Farhat, R. Gillard, I. Jaegle, Phillip Urquijo, K. Miyabayashi, I. Badhrees, Z. Drásal, S. K. Choi, M. Ritter, M. Z. Wang, U. Tamponi, M. J. Kim, J. E. Fast, T. Aushev, T. Hara, K. K. Joo, L. E. Piilonen, D. M. Asner, J. G. Shiu, Y. Usov, V.M. Aulchenko, X. H. He, A. M. Bakich, G. Bonvicini, Hitoshi Yamamoto, P. Vanhoefer, G. Schnell, S. Yashchenko, Y. Sakai, G. Varner, B. Golob, A. Rostomyan, T. Julius, J. S. Lange, S. Sandilya, A.E. Bondar, R. Chistov, T. Nanut, B. R. Ko, N. Gabyshev, J. Libby, Kiyoshi Tanida, Andrey Sokolov, A. Vinokurova, V. Gaur, C. H. Wang, S. H. Kim, Y. Yook, M. Shapkin, Semen Eidelman, Rakesh Kumar, K. Chilikin, R. Pestotnik, D. Červenkov, A. Bozek, S. Ogawa, B. Bhuyan, A. Bobrov, F. Simon, R. Ayad, T. K. Pedlar, Y. Iwasaki, M. Nakao, Vikas Bansal, T. A. Shibata, M. Bračko, C. Van Hulse, Dipanwita Dutta, A. Moll, K. Sumisawa, Kyung-Suk Cho, Byung Gu Cheon, P. Krokovny, T. Sanuki, B. Pal, Hiroaki Aihara, E. Nakano, K. Arinstein, Yoshinobu Unno, Peter Kodys, K. Senyo, V.E. Shebalin, A.L. Sibidanov, S. Al Said, D. Y. Kim, V. Babu, Yongsun Kim, A. Ishikawa, C. Schwanda, and D. Cinabro
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, Hadron, Analytical chemistry, 01 natural sciences, Omega, Nuclear physics, Amplitude, KEKB, 0103 physical sciences, High Energy Physics::Experiment, Statistical analysis, 010306 general physics
Abstract: We report on the first observations of (B) over bar (0) -> D-1 (2430)(0)omega, (B) over bar (0) -> D-1 (2420)(0)omega, and (B) over bar (0) -> D-2* (2460)(0)omega decays. The (B) over bar (0) -> D*(+) rho(1450)(-) decay is also observed. The branching fraction measurements are based on (771.6 +/- 10.6) x 10(6) B (B) over bar events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The fractions of longitudinal polarization of the D** states as well as partial wave fractions of the D-1 (2430)(0) are obtained. We also set a 90% confidence level upper limit for the product of branching fractions of B((B) over bar (0) -> D*(+)b(1) (1235)(-)) x B(b(1) (1235)(-) -> omega pi(-)). The measurements show evidence of nontrivial final-state interaction phases for the rho-meson-like amplitudes.
Published: 2015

21. Evidence for the decayB0→ηπ0

Author: Yang Li, T. Aushev, Y. Choi, L. Santelj, J. G. Shiu, T. Ferber, S. Nishida, J. Dalseno, Y. Sakai, Y. M. Goh, Z. Drásal, L. E. Piilonen, M. Huschle, P. Pakhlov, S. Yashchenko, T. Julius, D. Liventsev, K. T. Kim, R. Gillard, A. Zupanc, D. Getzkow, G. Pakhlova, D. Cinabro, M. Uchida, M. Ritter, E. Kato, K. Sumisawa, G. Schnell, T. Iijima, Vladimir Zhulanov, M. E. Sevior, I. S. Lee, A. Ishikawa, V. Chobanova, A. M. Bakich, Z. Natkaniec, T. Sumiyoshi, T. Sanuki, M. C. Chang, B. Pal, J. Yamaoka, M. Nakao, C. W. Park, P. Križan, N. Gabyshev, D. Červenkov, P. Lukin, B. R. Ko, G. S. Varner, X. H. He, H. Park, A. Bozek, Hiroaki Aihara, T. Kuhr, L. Li Gioi, G. B. Mohanty, A. Drutskoy, T. K. Pedlar, C. Kiesling, P. Wang, Yuki Sato, T. E. Browder, Jung-Hyun Kim, C. Pulvermacher, A. Bobrov, R. Ayad, B. G. Cheon, M. N. Wagner, A. Moll, H. Farhat, B. G. Fulsom, M. Bračko, A. Abdesselam, V. Gaur, M. J. Kim, D. Santel, M. Starič, C. P. Shen, James E. Fast, R. Itoh, Z. Doležal, K. Senyo, T. Kumita, A. Rostomyan, F. Thorne, X. L. Wang, O. Frost, D. H. Lee, V. Chekelian, D. Y. Kim, E. Nakano, Peter Kodys, A. Garmash, S. Uno, A. Chen, M. Shapkin, Samo Stanič, S. Korpar, M. Z. Wang, Y. S. Sohn, G. Bonvicini, B. Golob, K. Kinoshita, U. Tamponi, C. Van Hulse, S. Ogawa, Y. Iwasaki, Y. J. Kwon, K. Nakamura, S. Sandilya, V.N. Zhilich, A. Vinokurova, I. Adachi, H. K. Moon, S. H. Kim, K. Arinstein, S. Uehara, O. Schneider, P. Krokovny, J. S. Lange, J. B. Kim, S. Ganguly, M. Nayak, K. H. Kang, K. Cho, I. Jaegle, T. Hara, I. Badhrees, A.S. Kuzmin, Y. Usov, Marko Petrič, Yoshinobu Unno, T. Nanut, Sunmin Ryu, H. J. Hyun, H. Hayashii, Z. P. Zhang, E. Won, A. Vossen, V.E. Shebalin, A. J. Schwartz, L. Pesántez, O. Grzymkowska, C. H. Wang, S. Al Said, D. Matvienko, O. Seon, Frank Simon, D. Dutta, D. M. Asner, Hitoshi Yamamoto, P. Vanhoefer, W. S. Hou, V. Vorobyev, V. Babu, Yongsun Kim, C. Schwanda, T. A. Shibata, H. Miyata, A.L. Sibidanov, S.I. Eidelman, K. Hayasaka, M. Sumihama, Y. Watanabe, E. Solovieva, V.M. Aulchenko, J. Libby, R. Glattauer, S. Okuno, E. Ribežl, and Y. Teramoto
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Resonance, Confidence interval, Belle experiment, law.invention, Luminosity, Nuclear physics, KEKB, law, Pi, Collider
Abstract: We report a search for the charmless hadronic decay B-0 -> eta pi(0) with a data sample corresponding to an integrated luminosity of 694 fb(-1) containing 753 x 10(6) BB pairs. The data were collected by the Belle experiment running on the Upsilon(4S) resonance at the KEKB e(+)e(-) collider. We measure a branching fraction B(B-0 > eta pi(0)) = (4.1(-1.5-0.7)(+1.75+0.5)) x 10(-7), where the first unceminty is statistical and the second is systematic. Our measurement gives an upper limit of beta(B-0 -> n pi(0)) < 6.5 x 10(-7) at 90% confidence level. The signal has a significance of 3.0 standard deviations and constitutes the first evidence for this decay mode.
Published: 2015

22. Observation of a new charged charmoniumlike state inB¯0→J/ψK−π+decays

Author: H. Hayashii, S. Wehle, A. Garmash, L. E. Piilonen, M. Z. Wang, K. Kinoshita, U. Tamponi, G. Pakhlova, G. Tatishvili, A.L. Sibidanov, G. Schnell, A.E. Bondar, Y. Iwasaki, P. Lukin, B. R. Ko, Kiyoshi Tanida, K. Sumisawa, D. Cinabro, S. Yashchenko, Z. P. Zhang, Y. J. Kwon, S. Uehara, M. Uchida, V. Chobanova, D. Liventsev, S. L. Olsen, T. Julius, Z. Doležal, T. Kuhr, X. L. Wang, R. Ayad, O. Schneider, S. Al Said, T. K. Pedlar, P. Pakhlov, A. Moll, R. Chistov, M. Steder, K. M. Williams, C. Kiesling, A. Chen, G. S. Varner, A.S. Kuzmin, H. J. Kim, Mikhail Danilov, S. Sandilya, Yongsun Kim, Jung-Hyun Kim, Andrey Sokolov, C. Schwanda, Vikas Bansal, P. Wang, M. N. Wagner, V.M. Aulchenko, Yueh-Feng Liu, K. Chilikin, K. Dutta, D. Y. Kim, M. Bračko, J. Yamaoka, S. Uno, E. Nakano, D. A. Epifanov, Marko Petrič, H. J. Hyun, T. Nanut, G. Bonvicini, R. Gillard, M. J. Kim, S. K. Choi, K. Arinstein, A. Vinokurova, A. M. Bakich, Z. Natkaniec, James E. Fast, O. Seon, Frank Simon, M. Starič, C. Van Hulse, V.E. Shebalin, T. Sumiyoshi, H. Park, P. Krokovny, J. Haba, A. Bozek, J. Libby, T. Sanuki, K. Cho, N. Gabyshev, D. Červenkov, R. Mussa, Z. Drásal, T. Kawasaki, D. M. Asner, Yoshinobu Unno, B.A. Shwartz, S. Nishida, T. Hara, T. Mori, A. Ishikawa, Y. Watanabe, Vladimir Zhulanov, H. Farhat, O. Frost, E. Solovieva, M. Nakao, C. W. Park, P. Križan, M. Huschle, S. Ogawa, O. Grzymkowska, C. H. Wang, L. Li Gioi, T. E. Browder, S. Okuno, T. A. Shibata, H. Miyata, E. Ribežl, Tariq Aziz, S.I. Eidelman, Y. Teramoto, K. Hayasaka, V. Savinov, T. Uglov, V. Gaur, Yang Li, Y. Choi, N. K. Nisar, L. Santelj, I. Adachi, Y. S. Sohn, V.N. Zhilich, A. Zupanc, I. Jaegle, K. Miyabayashi, E. Nedelkovska, A. Rostomyan, Y. Sakai, F. Thorne, V. Chekelian, Y. M. Goh, Yukinori Sato, J. G. Shiu, X. H. He, G. B. Mohanty, Phillip Urquijo, M. Ritter, Hiroaki Aihara, R. Mizuk, B. G. Cheon, R. Itoh, S. Korpar, W. S. Hou, K. K. Joo, E. Won, P. Vanhoefer, T. Aushev, T. Ferber, B. Golob, J. S. Lange, S. Ganguly, A. Drutskoy, K. Trabelsi, and C. P. Shen
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Dalitz plot, State (functional analysis), Quantum number, 01 natural sciences, law.invention, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider
Abstract: We present the results of an amplitude analysis of B-0 --> J/psi K- pi(+) decays. A new charged charmoniumlike state Z(c)(4200)(+) decaying to J/psi pi(+) is observed with a significance of 6.2 sigma. The mass and width of the Z(c)(4200)(+) are 4196(-29-13)(+31+17) MeV/c(2) and 370(-70-132)(+70+70) MeV, respectively; the preferred assignment of the quantum numbers is J(P) = 1(+). In addition, we find evidence for Z(c)(4430)(+) --> J/psi pi(+). The analysis is based on a 711 fb(-1) data sample collected by the Belle detector at the asymmetric-energy e(+)e(-) collider KEKB.
Published: 2014

23. Measurement of branching fractions andCPviolation parameters inB→ωKdecays with first evidence ofCPviolation inB0→ωKs0

Author: G. Bonvicini, D. Cinabro, A. Vinokurova, P.A. Lukin, P. Krokovny, B. R. Ko, T. K. Pedlar, A. Moll, D. Semmler, K. Cho, O. Nitoh, Marko Petrič, H. J. Hyun, T. Iwashita, T. Sumiyoshi, X. H. He, Sang Hoon Lee, Jung-Hyun Kim, A. Bala, T. Sanuki, D. Matvienko, Yongsun Kim, K. Senyo, Hirokazu Miyake, M. Z. Wang, K. Kinoshita, U. Tamponi, C. H. Wang, S. Uno, M. Uchida, E. Nakano, D. Dutta, K. Dutta, H. Sahoo, H. Yamamoto, D. M. Asner, S. Okuno, V. Chobanova, D. Liventsev, J. Haba, Y. B. Hsiung, C. Van Hulse, D. Y. Kim, T. Iijima, T. Uglov, J. G. Shiu, G. S. Varner, T. Saito, K. Inami, B.A. Shwartz, L. Li Gioi, J. Dalseno, L. E. Piilonen, Y. Teramoto, A.L. Sibidanov, G. Pakhlova, T. Aushev, G. Tatishvili, Peter Kodys, A. J. Schwartz, T. Kuhr, M. Watanabe, S. Yashchenko, O. Seon, Frank Simon, A. Rostomyan, P. Wang, M. Ritter, Vladimir Zhulanov, T. Julius, B. Bhuyan, Norihito Muramatsu, M. E. Sevior, H. K. Park, Y. Yamashita, M. N. Wagner, R. Chistov, T. Ferber, A. Garmash, J. Libby, B. Kronenbitter, V. Gaur, S. Esen, Anze Zupanc, T. A. Shibata, H. Kawai, C. Ng, Y. Unno, H. Miyata, J. Li, Y. Hoshi, S.I. Eidelman, M. Steder, I. Adachi, Y. Sakai, T. E. Browder, M. Nakao, K. Hayasaka, J. B. Kim, B. G. Cheon, Yasuyuki Horii, M. Nayak, T. Kawasaki, V.N. Zhilich, K. Belous, S. Korpar, K. Sumisawa, J. Klucar, A. Bobrov, K. M. Williams, A. Chen, H. J. Kim, K. Trabelsi, I. Jaegle, K. Miyabayashi, Z. P. Zhang, V. Savinov, E. Nedelkovska, C. Kiesling, R. Mussa, A. Kuzmin, Mikhail Danilov, M. Shapkin, S. Ogawa, A. Ishikawa, H. Farhat, C. W. Park, M. Röhrken, K. Chilikin, M. J. Kim, M. Starič, Y. S. Sohn, P. Pakhlov, Kevin Varvell, J. H. Kang, T. Peng, M. Bračko, H. Aihara, H. Park, A. Bozek, James E. Fast, S. Nishida, T. Kumita, R. Pestotnik, V. Chekelian, Z. Drásal, G. B. Mohanty, Y. Ban, R. Mizuk, A. M. Bakich, Z. Natkaniec, Tariq Aziz, Y. Iwasaki, Yang Li, Y. Choi, N. K. Nisar, L. Santelj, N. Gabyshev, D. Červenkov, O. Schneider, Y. M. Goh, E. Kato, Samo Stanič, W. S. Hou, V. Vorobyev, E. Won, P. Vanhoefer, B. Golob, J. S. Lange, S. Ganguly, V.M. Aulchenko, Y. Watanabe, Z. Doležal, and R. Gillard
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, media_common.quotation_subject, Resonance, Charge (physics), Branching (polymer chemistry), 01 natural sciences, Asymmetry, law.invention, KEKB, law, 0103 physical sciences, CP violation, 010306 general physics, Collider, media_common
Abstract: We present a measurement of the branching fractions and charge- parity-( CP-) violating parameters in B..K decays. The results are obtained from the final data sample containing 772 x 10(6) BB _ pairs collected at the.d4S_ resonance with the Belle detector at the KEKB asymmetric- energy e_e- collider. We obtain the branching fractions BdB0 0 _d4.5 0.4dstat_ 0.3dsyst_x10- 6; BdB_..K__ d6.80.4dstat_ 0.4dsyst__x10- 6 which are in agreement with their respective current world averages. For the CP- violating parameters, we obtain A.K0 S - 0.36 +/- 0.19dstat_ 0.05dsyst_; S.K0 S _0.91 0.32dstat_ 0.05dsyst_; A.K_ - 0.03 +/- 0.04dstat_ 0.01dsyst_; where A and S represent the direct and mixing- induced CP asymmetry, respectively. We find no evidence of CP violation in the decay channel B_..K_; however, we obtain the first evidence of CP violation in the B0..K0 S decay channel at the level of 3.1 standard deviations.
Published: 2014

24. 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

25. 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

26. First observation ofCPviolation and improved measurement of the branching fraction and polarization ofB0→D+D−decays

Author: M. Starič, G. Tatishvili, A. Moll, P. Kapusta, J. G. Shiu, Z. Q. Liu, D. Liventsev, H. Ozaki, Leo Piilonen, B Bhuyan, Yasuyuki Horii, K. Kinoshita, R. Pestotnik, A.E. Bondar, Z. Drásal, T. Kuhr, Marko Petrič, Frank Simon, S. Okuno, H. K. Park, Y. Choi, Z. Doležal, K. T. Kim, K. Belous, Tariq Aziz, Y. S. Sohn, I. Adachi, P. Smerkol, Vladimir Zhulanov, Tagir Aushev, Y. Onuki, M. E. Sevior, Y. Li, Bruce Yabsley, Stephen Lars Olsen, B. Kronenbitter, E. Nakano, J. E. Fast, Y. Yamashita, B. R. Ko, Andrey Sokolov, L. Santelj, H. Miyata, D. Zander, T. Sumiyoshi, B. G. Cheon, S. H. Lee, Pavel Krokovny, G. B. Mohanty, O. Brovchenko, M. Ritter, T. A. Shibata, A. M. Bakich, S. Sandilya, H. Hayashii, S. Stanič, Yueh-Feng Liu, Y. M. Goh, K. Nishimura, K. M. Williams, A. Chen, Y. Unno, T. Tsuboyama, M. J. Kim, S. Neubauer, S. McOnie, H. J. Kim, K. Trabelsi, S. Nishida, J. Libby, Samo Korpar, C. P. Shen, K. Miyabayashi, D. M. Asner, W. S. Hou, K. Inami, V. Zhilich, Y. Sakai, K. Cho, Semen Eidelman, H. Sahoo, J. Li, M. Bračko, A. J. Schwartz, Hiroaki Aihara, J. Haba, T. Uglov, I. S. Cho, J. Yamaoka, V. Bhardwaj, A. Ishikawa, M. Nakao, M. Feindt, Toru Iijima, C. W. Park, P. Križan, Y. Teramoto, M. T. Prim, M. Röhrken, C. H. Wang, Y. B. Hsiung, O. Nitoh, S. Esen, V. Chekelian, Anze Zupanc, K. Sumisawa, M. Uchida, G. Pakhlova, Jung-Hyun Kim, M. Barrett, E. Solovieva, A. Bozek, M. Sumihama, V. Vorobyev, P. Pakhlov, S. Uno, Sunmin Ryu, T. Sanuki, H. Park, P. Vanhoefer, S. Koblitz, A. Drutskoy, Peter Kodys, E. Won, T. Kawasaki, K. Arinstein, R. Mizuk, C. Ng, K. Senyo, R. Louvot, P. Wang, Yongsun Kim, C. Schwanda, A.L. Sibidanov, N. Gabyshev, G. Varner, V. Gaur, M. Shapkin, R. Itoh, Y. Hoshi, T. Kumita, T. E. Browder, Sadaharu Uehara, Rakesh Kumar, J. B. Kim, M. Iwabuchi, Y. Iwasaki, T. Ohshima, O. Schneider, T. Julius, Po-Hsun Chen, R. Chistov, D. Mohapatra, Y. J. Kwon, J. Dalseno, C. Kiesling, H. O. Kim, Richard T. Kouzes, Kevin Varvell, J. H. Kang, Y. Watanabe, and Y. Usov
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, CP violation, 010306 general physics, Polarization (waves), 01 natural sciences
Abstract: We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B-0 -> D*(+) D*(-) decays using a data sample of 772 x 10(6)B (B) over bar pairs, collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain a branching fraction of B = (7.82 +/- 0.38 +/- 0.63) x 10(-4), a CP-odd fraction of R-perpendicular to = 0.138 +/- 0.024 +/- 0.006 and, additionally, a fraction of the longitudinal component in the transversity base of R-0 = 0.624 +/- 0.029 +/- 0.011. The measured values of the parameters of the CP violation are SD*+ D*- = 0.79 +/- 0.13 +/- 0.03 and A(D*+ D*-) 0.15 +/- 0.08 +/- 0.04.
Published: 2012

27. First measurement ofϕ3with a model-independent Dalitz plot analysis ofB±→DK±,D→KS0π+π−decay

Author: Andrey Sokolov, Y. Yamashita, J. H. Kang, Marko Petrič, H. J. Hyun, P. Smerkol, James E. Fast, S. Okuno, A. Ishikawa, C. W. Park, P. Križan, D. Matvienko, T. A. Shibata, H. Miyata, M. Bischofberger, Y. Hoshi, Bruce Yabsley, K. Arinstein, R. Mizuk, O. Nitoh, D. M. Asner, B. G. Cheon, Kevin Varvell, J. Yamaoka, C. H. Wang, Yasuyuki Horii, V.N. Zhilich, K. M. Williams, P. Chang, M. C. Chang, G. Bonvicini, J. Haba, G. Tatishvili, S. Uehara, Y. Watanabe, Hiroaki Aihara, R. Louvot, K. Sumisawa, A. Vinokurova, O. Seon, T. Mori, Yoshinobu Unno, Jung-Hyun Kim, Meng Wang, M. Iwabuchi, C. Z. Yuan, T. Kawasaki, K. Belous, S. Korpar, J. Libby, M. Feindt, K. Miyabayashi, Stephen L. Olsen, M. Uchida, P. Krokovny, T. Sumiyoshi, K. Cho, Frank Simon, Peter Kodys, Sang Hoon Lee, J. G. Shiu, V. Gaur, T. Sanuki, D. Liventsev, J. B. Kim, L. E. Piilonen, J. Dalseno, M. Nakao, Yang Li, Phillip Urquijo, G. Pakhlova, Anze Zupanc, A.L. Sibidanov, M. Ritter, Y. B. Hsiung, D. Epifanov, B.A. Shwartz, K. Prothmann, B. R. Ko, Sunmin Ryu, Y. Choi, G. S. Varner, T. Julius, A. J. Schwartz, H. J. Kim, Y. Sakai, K. S. Park, R. Chistov, Vladimir Zhulanov, E. Won, M. E. Sevior, Chang Liu, K. Trabelsi, R. Itoh, T. K. Pedlar, A. M. Bakich, Z. Natkaniec, A. Moll, T. Ohshima, M. Shapkin, B. Kronenbitter, P. Wang, M. Röhrken, K. Chilikin, Z. Q. Liu, Norihito Muramatsu, H. O. Kim, Hitoshi Yamamoto, E. Solovieva, Y. M. Goh, S. Ogawa, T. Aushev, P. Vanhoefer, E. Nakano, R. Pestotnik, Y. Sato, G. B. Mohanty, A. Garmash, J. Li, Jasvinder A. Singh, Yongsun Kim, S. Uno, C. Schwanda, Yasushi Nagasaka, Zhenyu Zhang, K. T. Kim, B. Golob, K. Senyo, S.I. Eidelman, V.M. Aulchenko, Yueh-Feng Liu, W. S. Hou, A.E. Bondar, Z. Doležal, T. Iijima, T. Kuhr, M. Rozanska, S. Nishida, K. Kinoshita, Anton Poluektov, H. Hayashii, H. Park, A. Bozek, S. Koblitz, A. Drutskoy, B. Bhuyan, T. E. Browder, N. Gabyshev, Samo Stanič, C. Kiesling, M. Bračko, Y. S. Sohn, M. J. Kim, M. Starič, T. Kumita, H. Sahoo, V. Vorobyev, Y. J. Kwon, O. Schneider, A.S. Kuzmin, and H. K. Park
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Unitarity, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance, Dalitz plot, 01 natural sciences, Belle experiment, Amplitude, 0103 physical sciences, Pi, 010306 general physics, Bar (unit)
Abstract: We present the first measurement of the angle phi(3) of the unitarity triangle using a model-independent Dalitz plot analysis of B-+/- -> DK +/-, D -> K-S(0)pi(+)pi(-) ecays. The method uses, as input, measurements of the strong phase of the D -> K-S(0)pi(+)pi(-) amplitude from the CLEO Collaboration. The result is based on the full data set of 772 x 10(6) B (B) over bar pairs collected by the Belle experiment at the Gamma(4S) resonance. We obtain phi(3) = (77.3(-14.9)(+15.1) +/- 4.1 +/- 4.3)degrees and the suppressed amplitude ratio r(B) = 0.145 +/- 0.030 +/- 0.010 +/- 0.011. Here the first error is statistical, the second is the experimental systematic uncertainty, and the third is the error due to the precision of the strong-phase parameters obtained by CLEO.
Published: 2012

28. Measurements of branching fractions and time-dependentCPviolating asymmetries inB0→D(*)±D∓decays

Author: M. Iwabuchi, Yukinori Sato, Y. F. Liu, H. Yamamoto, Y. Iwasaki, Y. J. Kwon, L. E. Piilonen, G. Pakhlova, Anton Poluektov, A. M. Bakich, J. G. Shiu, D. Zander, K. S. Park, H. Miyata, A. Ishikawa, M. Barrett, V. Bhardwaj, T. K. Pedlar, O. Schneider, T. Iijima, E. Nakano, A. J. Schwartz, Byeong Rok Ko, Norihito Muramatsu, T. Ohshima, B. Bhuyan, Phillip Urquijo, G. B. Mohanty, M. Bischofberger, A. Moll, S. L. Olsen, Z. P. Zhang, Yasushi Nagasaka, P. Križan, T. E. Browder, Y. Hoshi, H. Hayashii, A. Chen, Hyunyong Kim, T. Kuhr, N. Gabyshev, Y. B. Li, H. O. Kim, T. Julius, Z. Drásal, O. Brovchenko, Y. Unno, Po-Hsun Chen, J. B. Kim, K. Senyo, M. J. Kim, G. Bonvicini, M. Starič, J. Li, Yasuyuki Horii, T. Kawasaki, S. Eidelman, M. Z. Wang, K. Kinoshita, S. Uehara, M. Uchida, T. Kumita, B. G. Cheon, Peter Kodys, D. Liventsev, P. Krokovny, Y. S. Sohn, V.N. Zhilich, Y. Choi, Richard T. Kouzes, M. Shapkin, M. Feindt, K. Cho, H. Park, A. Bozek, J. Dalseno, G. S. Varner, M. Röhrken, K. Chilikin, Y. J. Kim, S. Koblitz, Samo Stanič, C. Liu, H. Ozaki, A. Drutskoy, K. Belous, Andrey Sokolov, R. Louvot, S. Korpar, R. Itoh, V. M. Aulchenko, Y. M. Goh, S. Nishida, K. Miyabayashi, P. Wang, R. Mizuk, K. Trabelsi, I. Adachi, J. H. Kang, C. P. Shen, W. S. Hou, S. H. Lee, Y. B. Hsiung, K. Prothmann, R. Pestotnik, T.-A. Shibata, T. Sumiyoshi, C. Kiesling, V. Gaur, V. V. Zhulanov, T. Aushev, Martin Ritter, M. Bračko, M. Nakao, V. Vorobyev, B. Shwartz, T. Sanuki, Sunmin Ryu, A.L. Sibidanov, M. C. Chang, C. W. Park, E. Won, S. Uno, C. Schwanda, A.E. Bondar, P. Vanhoefer, Kevin Varvell, K. M. Williams, Z. Doležal, T. Mori, H. Aihara, K. T. Kim, J. B. Singh, Z. Q. Liu, Z. Natkaniec, J. Libby, M. T. Prim, Jung-Hyun Kim, I. S. Cho, S. Okuno, C. H. Wang, H. Sahoo, J. E. Fast, Y. Watanabe, K. Sumisawa, D. M. Asner, S. Ogawa, M. Watanabe, H. K. Park, Y. Yamashita, Marko Petrič, H. J. Hyun, P. Smerkol, M. E. Sevior, B. Kronenbitter, J. Haba, Y. Sakai, A. Zupanc, O. Nitoh, E. Solovieva, O. Seon, Frank Simon, and A. Garmash
Subjects: Combinatorics, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences
Abstract: We report measurements of branching fractions and time-dependent $CP$ asymmetries in ${B}^{0}\ensuremath{\rightarrow}{D}^{+}{D}^{\ensuremath{-}}$ and ${B}^{0}\ensuremath{\rightarrow}{D}^{*\ifmmode\pm\else\textpm\fi{}}{D}^{\ensuremath{\mp}}$ decays using a data sample that contains $(772\ifmmode\pm\else\textpm\fi{}11)\ifmmode\times\else\texttimes\fi{}{10}^{6}B\overline{B}$ pairs collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. We determine the branching fractions to be $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}^{+}{D}^{\ensuremath{-}})=(2.12\ifmmode\pm\else\textpm\fi{}0.16\ifmmode\pm\else\textpm\fi{}0.18)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ and $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}^{*\ifmmode\pm\else\textpm\fi{}}{D}^{\ensuremath{\mp}})=(6.14\ifmmode\pm\else\textpm\fi{}0.29\ifmmode\pm\else\textpm\fi{}0.50)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$. We measure $CP$ asymmetry parameters ${\mathcal{S}}_{{D}^{+}{D}^{\ensuremath{-}}}=\ensuremath{-}{1.06}_{\ensuremath{-}0.14}^{+0.21}\ifmmode\pm\else\textpm\fi{}0.08$ and ${\mathcal{C}}_{{D}^{+}{D}^{\ensuremath{-}}}=\ensuremath{-}0.43\ifmmode\pm\else\textpm\fi{}0.16\ifmmode\pm\else\textpm\fi{}0.05$ in ${B}^{0}\ensuremath{\rightarrow}{D}^{+}{D}^{\ensuremath{-}}$ and ${\mathcal{A}}_{{D}^{*}D}=+0.06\ifmmode\pm\else\textpm\fi{}0.05\ifmmode\pm\else\textpm\fi{}0.02$, ${\mathcal{S}}_{{D}^{*}D}=\ensuremath{-}0.78\ifmmode\pm\else\textpm\fi{}0.15\ifmmode\pm\else\textpm\fi{}0.05$, ${\mathcal{C}}_{{D}^{*}D}=\ensuremath{-}0.01\ifmmode\pm\else\textpm\fi{}0.11\ifmmode\pm\else\textpm\fi{}0.04$, $\ensuremath{\Delta}{\mathcal{S}}_{{D}^{*}D}=\ensuremath{-}0.13\ifmmode\pm\else\textpm\fi{}0.15\ifmmode\pm\else\textpm\fi{}0.04$ and $\ensuremath{\Delta}{\mathcal{C}}_{{D}^{*}D}=+0.12\ifmmode\pm\else\textpm\fi{}0.11\ifmmode\pm\else\textpm\fi{}0.03$ in ${B}^{0}\ensuremath{\rightarrow}{D}^{*\ifmmode\pm\else\textpm\fi{}}{D}^{\ensuremath{\mp}}$, where the first uncertainty is statistical and the second is systematic. We exclude the conservation of $CP$ symmetry in both decays at equal to or greater than $4\ensuremath{\sigma}$ significance.
Published: 2012

29. Search for time-dependentCPTviolation in hadronic and semileptonicBdecays

Author: J. Haba, T. Tsuboyama, B.A. Shwartz, Vladimir Zhulanov, M. E. Sevior, H. O. Kim, Tagir Aushev, J. Libby, Y. Onuki, H. Sahoo, D. M. Asner, Zhenyu Zhang, R. Louvot, A. Bozek, M. Watanabe, T. Uglov, M. Sumihama, H. J. Kim, S. H. Lee, Y. B. Hsiung, K. Cho, P. Wang, V.E. Shebalin, Stephen Lars Olsen, I. S. Cho, Norihito Muramatsu, Y. Yamashita, K. T. Kim, M. T. Prim, J. Dalseno, C. Kiesling, S. K. Choi, Y. Li, Y. Iwasaki, A. Vinokurova, Pavel Krokovny, Toru Iijima, O. Nitoh, K. Belous, T. Kuhr, T. Ohshima, T. Iwashita, Satoshi Tanaka, H. Miyata, Y. S. Sohn, O. Schneider, M. Bischofberger, H. K. Park, V.M. Aulchenko, K. Sumisawa, D. Epifanov, M. Uchida, A.L. Sibidanov, Y. Sakai, Y. Sato, G. Pakhlova, P. Chang, G. Tatishvili, A.S. Kuzmin, Yasuyuki Horii, Marko Petrič, W. S. Hou, K. S. Park, O. Brovchenko, K. Hayasaka, S. Stanič, H. J. Hyun, P. Smerkol, T. Julius, G. B. Mohanty, A. Moll, Peter Kodys, G. Varner, Hiroaki Aihara, D. Liventsev, Y. Teramoto, Po-Hsun Chen, B. G. Cheon, Y. Hoshi, D. Matvienko, Z. Natkaniec, S. Okuno, E. Won, C. Z. Yuan, Y. Miyazaki, A.E. Bondar, K. Trabelsi, R. Chistov, P. Kapusta, S. Ogawa, B Bhuyan, I. Adachi, Kevin Varvell, Samo Korpar, C. P. Shen, Y. Nakahama, X. L. Wang, Phillip Urquijo, M. Ritter, T. A. Shibata, S. Nishida, M. Bračko, T. Sumiyoshi, A. M. Bakich, R. Seidl, J. H. Kang, E. Solovieva, Y. Watanabe, T. Mori, Bruce Yabsley, T. Kumita, P. Pakhlov, Y. Usov, Y. Choi, Z. Doležal, T. E. Browder, V. Gaur, M. Shapkin, V. Zhilich, R. Itoh, Leo Piilonen, Yongsun Kim, Sadaharu Uehara, J. B. Kim, C. Schwanda, M. C. Chang, Z. Q. Liu, J. Li, M. Starič, N. Gabyshev, Y. J. Kwon, J. G. Shiu, S. Koblitz, R. Sinha, J. E. Fast, B. R. Ko, Z. Drásal, M. Danilov, H. Hayashii, K. M. Williams, A. Chen, Y. Unno, K. Hara, K. Chilikin, R. Pestotnik, Y. M. Goh, K. Inami, Y. Yusa, M. Röhrken, V. Bhardwaj, B. Golob, H. Nakazawa, A. J. Schwartz, J. S. Lange, Chang Liu, V. Vorobyev, T. Higuchi, S. Uno, M. J. Kim, Sunmin Ryu, S. McOnie, K. Miyabayashi, T. Sanuki, Hitoshi Yamamoto, A. Garmash, T. Kawasaki, C. Ng, K. Senyo, C. H. Wang, Yasushi Nagasaka, A. Ishikawa, A. Bay, T. Nozaki, M. Nakao, C. W. Park, P. Križan, Andrey Sokolov, K. Nishimura, and Semen Eidelman
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Single measurement, Hadron, Resonance, 01 natural sciences, law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Collider
Abstract: We report a new sensitive search for C P T violation, which includes improved measurements of the C P T-violating parameter z and the total decay-width difference normalized to the averaged width delta(d) delta(d) of the two B-d mass eigenstates . The results are based on a data sample of 535 x 10(6) B B pairs collected at the Epsilon(4 S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. We obtain Re (z) = [+1.9 +/- 3.7 (stat) +/- 3.3 (syst)] x 10(>-2), qm (z) = [-5.7 +/- 3.3 (stat) +/- 3.3 (syst)] x 10(-3), and delta(d) / delta(d) = [-1.7 +/- 1.8 (stat) +/- 1.1 (syst)] x 10(-2), all of which are consistent with zero. This is the most precise single measurement of these parameters in the neutral B-meson system to date.
Published: 2012

30. First observation of radiativeB0→ϕK0γdecays and measurements of their time-dependentCPviolation

Author: K. Kinoshita, K. Inami, H. Hayashii, J. Li, Y. Watanabe, Yang Li, Y. Choi, A.E. Bondar, T. A. Shibata, H. Miyata, Y. Hoshi, S.I. Eidelman, S. E. Vahsen, S. Nishida, Jung-Hyun Kim, G. B. Mohanty, Y. S. Sohn, K. T. Kim, K. Hayasaka, A. J. Schwartz, J. Libby, Y. Iwasaki, M. Sumihama, P. Kody, Y. Ushiroda, S. L. Olsen, T. Iwashita, K. Trabelsi, T. Iijima, Y. J. Kwon, Marko Petrič, S. K. Kim, O. Brovchenko, H. J. Hyun, M. T. Prim, P. Smerkol, Y. Onuki, V.N. Zhilich, N. J. Joshi, Ping Zhou, Y. B. Hsiung, Sunmin Ryu, S. Okuno, O. Schneider, Y. Unno, K. Miyabayashi, T. Kuhr, E. Won, Yasuyuki Horii, I. Adachi, O. Seon, Frank Simon, V.M. Aulchenko, K. M. Williams, A. Chen, P. Pakhlov, J. B. Kim, E. L. Barberio, Z. Q. Liu, Y. Teramoto, Bruce Yabsley, D. Matvienko, A. Vinokurova, M. Shapkin, O. Nitoh, Y. Miyazaki, M. Röhrken, J. Haba, A. Bozek, D. M. Asner, S. Koblitz, K. Senyo, K. Cho, C. L. Lim, B. Bhuyan, G. Tatishvili, B.A. Shwartz, T. Kawasaki, M. J. Kim, T. E. Browder, D. Epifanov, R. Pestotnik, M. Starič, Z. Doleal, B. R. Ko, M. Uchida, P. Krian, Z. Drásal, T. Kumita, Y. Sakai, Vladimir Zhulanov, J. S. Lange, A. Kuzmin, D. Liventsev, M. E. Sevior, V. Bhardwaj, T. Nozaki, C. Z. Yuan, Anze Zupanc, W. S. Hou, G. S. Varner, Y. Yusa, E. Solovieva, R. Itoh, Yongsun Kim, S. Uno, C. Schwanda, Nagao Kobayashi, J. G. Shiu, H. Sahoo, T. Uglov, J. Dalseno, R. Mizuk, K. Sumisawa, B. G. Cheon, S. Suzuki, K. Belous, S. Korpar, R. Louvot, V.E. Shebalin, V. Gaur, M. Nakao, S. McOnie, H. J. Kim, Z. P. Zhang, H. O. Kim, C. Ng, Rakesh Kumar, M. Iwabuchi, T. Mori, T. Sumiyoshi, Sang Hoon Lee, T. Sanuki, L. E. Piilonen, G. Pakhlova, T. Julius, Po-Hsun Chen, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, Andrey Sokolov, J. H. Kang, K. Nishimura, James E. Fast, Samo Stanič, A. Ishikawa, C. Kiesling, C. W. Park, M. J. Lee, T. Peng, M. Bračko, K. Sakai, C. C. Zhang, M. Watanabe, H. K. Park, and Y. Yamashita
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Gamma ray, 01 natural sciences, Nuclear physics, Particle decay, Positron, KEKB, 0103 physical sciences, CP violation, B meson, 010306 general physics
Abstract: We report the first observation of the radiative decay B-0 -> phi K-0 gamma using a data sample of 772 x 10(6) B (B) over bar pairs collected at the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal of 37 +/- 8 events with a significance of 5.4 standard deviations including systematic uncertainties. The measured branching fraction is B(B-0 ->phi K-0 gamma) = (2.74 +/- 0.60 +/- 0.32) x 10(-6), where the uncertainties are statistical and systematic, respectively. We also report the first measurements of time-dependent CP-violation parameters: S-phi K0s gamma = +0.74(-1.05)(+0.72)(stat)(-0.024)(+0.10)(syst) and A phi(0)(Ks)gamma = +0.35 +/- 0.58(stat)(-0.10)(+0.23)(syst). Furthermore, we measure B(B+ -> phi K+gamma) = (2.48 +/- 0.30 +/- 0.24) x 10(-6), A(CP) = -0.03 +/- 0.11 +/- 0.08, and find that the signal is concentrated in the M-phi K mass region near threshold.
Published: 2011

31. Measurements of time-dependentCPasymmetries inB→D*∓π±decays using a partial reconstruction technique

Author: Andrey Sokolov, J. H. Kang, K. Arinstein, J. G. Shiu, Y. Iwasaki, Y. J. Kwon, J. Dalseno, Marko Petrič, Yoshinobu Unno, H. J. Hyun, P. Smerkol, Nagao Kobayashi, O. Schneider, L. E. Piilonen, S. Neubauer, H. Sahoo, T. Uglov, H. Miyata, A. J. Schwartz, H. J. Kim, Y. Miyazaki, O. Nitoh, M. Bischofberger, Y. Hoshi, Chang Liu, M. Uchida, Peter Kodys, C. C. Chiang, C. C. Zhang, V.M. Aulchenko, S.I. Eidelman, E. L. Barberio, A. Ishikawa, Z. Dalsžal, T. Julius, Zhenyu Zhang, Y. Yamashita, M. E. Sevior, Po-Hsun Chen, K. Belous, C. W. Park, P. Križan, G. S. Varner, B. G. Cheon, Satoshi Tanaka, T. Iwashita, M. J. Kim, K. Kinoshita, K. Trabelsi, S. H. Kyeong, C. P. Shen, T. Zivko, Y. B. Hsiung, G. B. Mohanty, M. Starič, T. Kumita, Y. S. Sohn, A. Chen, Ping Zhou, Y. Sakai, I. S. Cho, A. Matyja, Anton Poluektov, K. Miyabayashi, Y. Choid, Yasuyuki Horii, T. Aushev, Anze Zupanc, Z. Drásal, C. H. Wang, S. Uno, C. Schwanda, A.E. Bondar, Samo Stanič, E. Solovieva, M. Iwabuchi, J. Li, Y. Teramoto, Bruce Yabsley, R. Louvot, M. Nakao, M. Shapkin, C. Kiesling, T. Sumiyoshi, M. Röhrken, Sang Hoon Lee, S. McOnie, M. J. Lee, M. Bračko, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, P. Pakhlov, A. Bozek, B. Bhuyan, B. R. Ko, W. S. Hou, Vladislav Balagura, A. Vinokurova, K. Cho, S. Nishida, E. Won, B. Golob, V. Bhardwaj, J. S. Lange, S. Uehara, H. Ha, S. Bahinipati, S. Ogawa, and K. Sumisawa
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Resonance, 01 natural sciences, law.invention, Pion, KEKB, law, 0103 physical sciences, Pi, CP violation, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, Collider, Bar (unit)
Abstract: We report results on time-dependent CP asymmetries in B -> D*(-/+)pi(+/-) decays based on a data sample containing 657 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider at the Y(4S) resonance. We use a partial reconstruction technique, wherein signal B -> D*(-/+)pi(+/-) events are identified using information only from the fast pion from the B decay and the slow pion from the subsequent decay of the D*(-/+), where the former (latter) corresponds to D*(+)(D*(-)) final states. We obtain CP violation parameters S+ = +0.061 +/- 0.018 (stat) +/- 0.012 (syst) and S- = +0.031 +/- 0.019 (stat) +/- 0.015 (syst).
Published: 2011

32. Study of theK+π+π−final state inB+→J/ψK+π+π−andB+→ψ′K+π+π−

Author: P. Pakhlov, Y. Sakai, H. Park, A. Bozek, T. Julius, Po-Hsun Chen, Z. Drásal, J. Li, T. E. Browder, S. Ogawa, Y. Chao, C. W. Park, Sunmin Ryu, E. Won, B. R. Ko, S.I. Eidelman, Daniel Robert Marlow, Marko Petrič, B. G. Cheon, Anton Poluektov, A. M. Bakich, K. Trabelsi, S. Nishida, Z. Natkaniec, H. J. Hyun, P. Smerkol, Vladimir Zhulanov, M. Iwabuchi, C. P. Shen, K. M. Williams, M. E. Sevior, R. Louvot, A. Chen, K. Sumisawa, C. H. Wang, M. Shapkin, S. Okuno, Vladislav Balagura, H. O. Kim, Z. Doležal, Y. Miyazaki, Y. J. Kim, T. Sumiyoshi, G. B. Mohanty, T. Aushev, Zhenyu Zhang, K. Belous, Sang Hoon Lee, H. Sahoo, Y. Teramoto, J. H. Kang, S. Uno, S. K. Choi, A. Drutskoy, H. Hayashii, K. Nishimura, Samo Stanič, S. L. Olsen, V. Bhardwaj, O. Nitoh, Yasuyuki Horii, Y. Choi, P. Chang, S. Esen, R. Pestotnik, H. Guler, Anze Zupanc, Jung-Hyun Kim, P. Krokovny, M. J. Lee, J. G. Shiu, J. Dalseno, K. Cho, M. Bračko, Y. Watanabe, T. Zivko, W. S. Hou, S. Uehara, H. Ha, V.M. Aulchenko, N. Katayama, E. L. Barberio, K. Inami, N. J. Joshi, M. Z. Wang, K. Kinoshita, D. Liventsev, G. S. Varner, M. Nakao, Hiroaki Aihara, R. Itoh, S. McOnie, J. MacNaughton, A. Matyja, T. Mori, K. Senyo, T. Kawasaki, H. J. Kim, Chang Liu, V.N. Zhilich, Ping Zhou, K. Miyabayashi, W. Dungel, M. J. Kim, M. Starič, T. Kumita, Peter Kodys, Y. J. Kwon, O. Schneider, A.S. Kuzmin, K. Arinstein, R. Mizuk, M. Watanabe, H. K. Park, Y. Yamashita, Yoshinobu Unno, S. H. Kyeong, H. Miyata, M. Bischofberger, Y. Hoshi, and L. E. Piilonen
Subjects: Physics, Nuclear and High Energy Physics, Antiparticle, Meson, 010308 nuclear & particles physics, Branching fraction, Hadron, 01 natural sciences, Omega, Crystallography, Particle decay, 0103 physical sciences, B meson, 010306 general physics, Dimensionless quantity
Abstract: Using $535\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B$-meson pairs collected by the Belle detector at the KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider, we measure branching fractions of $(7.16\ifmmode\pm\else\textpm\fi{}0.10(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.60(\mathrm{syst})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ for ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and $(4.31\ifmmode\pm\else\textpm\fi{}0.20(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.50(\mathrm{syst}))\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ for ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\psi}}^{\ensuremath{'}}{K}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$. We perform amplitude analyses to determine the resonant structure of the ${K}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ final state in ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\psi}}^{\ensuremath{'}}{K}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and find that the ${K}_{1}(1270)$ is a prominent component of both decay modes. There is significant interference among the different intermediate states, which leads, in particular, to a striking distortion of the $\ensuremath{\rho}$ line shape due to the $\ensuremath{\omega}$. Based on the results of the fit to the ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ data, the relative decay fractions of the ${K}_{1}(1270)$ to $K\ensuremath{\rho}$, $K\ensuremath{\omega}$, and ${K}^{*}(892)\ensuremath{\pi}$ are consistent with previous measurements, but the decay fraction to ${K}_{0}^{*}(1430)$ is significantly smaller. Finally, by floating the mass and width of the ${K}_{1}(1270)$ in an additional fit of the ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ data, we measure a mass of $(1248.1\ifmmode\pm\else\textpm\fi{}3.3(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}1.4(\mathrm{syst}))\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and a width of $(119.5\ifmmode\pm\else\textpm\fi{}5.2(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}6.7(\mathrm{syst}))\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ for the ${K}_{1}(1270)$.
Published: 2011

33. Observation of an enhancement ine+e−→Υ(1S)π+π−,Υ(2S)π+π−, andΥ(3S)π+π−production nears=10.89 GeV

Author: J. G. Shiu, J. Dalseno, T. Iijima, J. Wicht, K. Vervink, Samo Stanič, P. Chang, Youngjoon Kwon, K. Sakai, M. Starič, Marko Petrič, H. J. Hyun, P. Smerkol, Kevin Varvell, A. Matyja, Masashi Hazumi, S. Uno, C. Schwanda, Y. Watanabe, H. Aihara, Y. Chao, D. Epifanov, B. R. Ko, Yasushi Nagasaka, Y. Sakai, B. G. Cheon, I. S. Cho, A. Drutskoy, C. Liu, Y. Iwasaki, C. Kiesling, V. Bhardwaj, Y. Miyazaki, R. Seidl, Vladislav Balagura, R. Mizuk, P. Kriaan, K. Trabelsi, S. Okuno, C. H. Wang, D. H. Kah, K. Belous, S. Korpar, Jolanta Brodzicka, T. Aushev, B.A. Shwartz, M. Nakao, C. P. Shen, S. McOnie, J. MacNaughton, M. Z. Wang, K. Kinoshita, M. Bračko, H. Sahoo, A. Zupanc, Y. B. Hsiung, Vladimir Zhulanov, M. C. Chang, E. Solovieva, P. Goldenzweig, Y. Teramoto, Bruce Yabsley, O. Nitoh, A. M. Bakich, T. Ohshima, B. Y. Han, O. Zyukova, T. Uglov, H. K. Park, Ju Hwan Kang, Z. P. Zhang, Y. Yamashita, S. Suzuki, H. O. Kim, H. Miyata, N. Gabyshev, M. Iwabuchi, J. S. Lange, P. Krokovny, Yang Liu, R. Louvot, M. Bischofberger, Y. Hoshi, C. Z. Yuan, Y. Unno, S.I. Eidelman, T. Nozaki, S. H. Kyeong, Y. Ushiroda, D. Liventsev, I. Adachi, K. Hayasaka, T. Sumiyoshi, E. Nakano, Sang Hoon Lee, Sunmin Ryu, G. S. Varner, E. Won, L. E. Piilonen, G. Pakhlova, R. Itoh, C. C. Chiang, P. Wang, S. Ogawa, T. Julius, Po-Hsun Chen, R. Chistov, K. F. Chen, A.E. Bondar, K. Senyo, S. Uehara, H. Hayashii, H. Ha, N. Katayama, W. S. Hou, K. Sumisawa, Andrey Sokolov, K. Inami, K. Nishimura, A. Bay, A. Chen, M. Shapkin, Robin Wedd, Y. J. Kim, R. Pestotnik, J. Li, K. Miyabayashi, H. Park, A. Bozek, S. Nishida, A. J. Schwartz, Y. I. Kim, T. E. Browder, O. Schneider, and Y. Choi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Hadron, Resonance, Elementary particle, Quarkonium, 01 natural sciences, KEKB, 0103 physical sciences, Production (computer science), 010306 general physics
Abstract: We measure the production cross sections for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\Upsilon}(1S){\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, $\ensuremath{\Upsilon}(2S){\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, and $\ensuremath{\Upsilon}(3S){\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ as a function of $\sqrt{s}$ between 10.83 GeV and 11.02 GeV. The data consist of $8.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with the Belle detector at the KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider. We observe enhanced production in all three final states that does not agree well with the conventional $\ensuremath{\Upsilon}(10860)$ line shape. A fit using a Breit-Wigner resonance shape yields a peak mass of $[10\text{ }{888.4}_{\ensuremath{-}2.6}^{+2.7}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}1.2(\mathrm{syst})]\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and a width of $[{30.7}_{\ensuremath{-}7.0}^{+8.3}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}3.1(\mathrm{syst})]\text{ }\text{ }\mathrm{MeV}/{c}^{2}$.
Published: 2010

34. Search forCP-violating charge asymmetry inB±→J/ψK±decays

Author: A.E. Bondar, E. Nakano, Meng Wang, Z. Doležal, Andrey Sokolov, S. Ogawa, J. H. Kang, W. S. Hou, H. Park, A. Bozek, Marko Petrič, H. J. Hyun, P. Smerkol, B. R. Ko, H. Sahoo, B. Golob, V. Bhardwaj, S. Neubauer, J. S. Lange, B. G. Cheon, T. Uglov, Sunmin Ryu, E. Won, S. Nishida, Y. Miyazaki, K. Inami, A. J. Schwartz, H. J. Kim, M. Starič, T. Kumita, A. Chen, Chang Liu, T. Kuhr, Vladislav Balagura, D. Mohapatra, M. Feindt, Zhenyu Zhang, M. Shapkin, Robin Wedd, H. Kawai, M. Röhrken, Y. J. Kim, B. Bhuyan, S. L. Olsen, T. E. Browder, W. Dungel, E. L. Barberio, O. Zyukova, Samo Stanič, Y. Iwasaki, G. N. Taylor, Y. J. Kwon, Yasuyuki Horii, C. W. Park, P. Križan, A. M. Bakich, K. Sumisawa, S.I. Eidelman, Ping Zhou, T. Zivko, Y. Watanabe, Z. Natkaniec, T. Ohshima, O. Schneider, R. Pestotnik, Z. Drásal, K. Miyabayashi, R. Louvot, A.S. Kuzmin, H. Palka, H. Miyata, M. Bischofberger, L. E. Piilonen, Y. Hoshi, K. Arinstein, J. Li, G. B. Mohanty, P. Krokovny, G. Pakhlova, K. Hayasaka, K. Cho, H. Hayashii, C. C. Chiang, S. Uehara, H. Ha, C. Kiesling, Yoshinobu Unno, Po-Hsun Chen, S. Uno, M. J. Lee, M. Bračko, Y. Choi, T. Sumiyoshi, Kevin Varvell, M. C. Chang, A. Matyja, M. Iwabuchi, M. Nakao, S. McOnie, A. Zupanc, O. Seon, Frank Simon, Y. Sakai, D. Liventsev, G. S. Varner, E. Solovieva, R. Itoh, P. Wang, Kai-Feng Chen, K. Senyo, T. Kawasaki, O. Nitoh, Hiroaki Aihara, K. Trabelsi, C. P. Shen, Antonio Limosani, K. Vervink, H. K. Park, Y. Yamashita, S. H. Kyeong, C. C. Zhang, M. Watanabe, K. Belous, S. Korpar, J. G. Shiu, J. Dalseno, C. H. Wang, K. Sakai, H. Kichimi, T. Tsuboyama, J. Haba, B.A. Shwartz, M. E. Sevior, Jung-Hyun Kim, S. Okuno, T. Aushev, Y. Teramoto, Y. Chao, and M. T. Prim
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, media_common.quotation_subject, Hadron, Quarkonium, 01 natural sciences, Asymmetry, Nuclear physics, Particle decay, KEKB, 0103 physical sciences, CP violation, High Energy Physics::Experiment, 010306 general physics, media_common
Abstract: We present the result of a search for charge asymmetry in B-+/- -> J/psi K-+/- decays using 772 X 10(6) B (B) over bar pairs collected at the Y(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The CP-violating charge asymmetry is measured to be A(CP)(B+ -> J/psi K+) = [-0.76 +/- 0.50 (stat) +/- 0.22 (syst)]%.
Published: 2010

35. Measurement ofCPviolating asymmetries inB0→K+K−KS0decays with a time-dependent Dalitz approach

Author: M. Iwasaki, T. Iijima, B. R. Ko, O. Nitoh, Z. Drásal, Marko Petrič, H. J. Hyun, P. Smerkol, S. Neubauer, Y. Miyazaki, T. Kuhr, Peter Kodys, Tariq Aziz, Vladislav Balagura, D. Zander, Hiroaki Aihara, A. Das, B. Golob, V. Bhardwaj, Kazuhiko Hara, J. H. Kang, G. S. Varner, Y. Iwasaki, Y. Choi, K. Belous, S. Korpar, S. L. Olsen, R. Itoh, K. Nishimura, P. Wang, Kevin Varvell, K. Sumisawa, T. Zivko, Y. B. Hsiung, M. Shapkin, O. Schneider, S. Uehara, Robin Wedd, W. S. Hou, A. Matyja, K. Arinstein, H. Ozaki, N. Katayama, H. Miyata, M. Bischofberger, Y. Hoshi, Y. Yusa, P. Goldenzweig, H. Park, A. Bozek, G. Bonvicini, K. Hayasaka, K. Senyo, J. G. Shiu, Y. Ushiroda, J. Dalseno, T. Kawasaki, S. Nishida, R. Pestotnik, Y. F. Liu, S. Uno, C. Schwanda, M. J. Kim, P. Krokovny, Yoshinobu Unno, T. Nozaki, S. Ogawa, X. L. Wang, B. G. Cheon, C. W. Park, P. Križan, E. Won, M. Starič, Y. Sakai, T. Kumita, A. Zupanc, A. Chen, Masashi Hazumi, S.I. Eidelman, T. E. Browder, R. Louvot, H. Sahoo, T. Uglov, Y. Watanabe, C. C. Chiang, K. Inami, G. B. Mohanty, E. Solovieva, M. Nakao, S. McOnie, M. Iwabuchi, L. E. Piilonen, I. S. Cho, E. Nakano, A.E. Bondar, H. Kichimi, P. Chang, T. Julius, Po-Hsun Chen, B.A. Shwartz, Z. Doležal, Jung-Hyun Kim, H. Kawai, A. M. Bakich, T. Ohshima, C. H. Wang, T. Sumiyoshi, Y. Nakahama, Sang Hoon Lee, M. E. Sevior, W. Ostrowicz, Y. Chao, Zhenyu Zhang, A. Drutskoy, Yasuyuki Horii, J. Haba, M. T. Prim, P. Kapusta, T. Aushev, Y. Teramoto, Samo Stanič, H. K. Park, Y. Yamashita, S. H. Kyeong, M. J. Lee, M. Bračko, K. Trabelsi, C. P. Shen, K. Vervink, V.N. Zhilich, Ping Zhou, K. Miyabayashi, H. Nakazawa, A. J. Schwartz, H. J. Kim, and T. Higuchi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Maximum likelihood, Electron–positron annihilation, Resonance, Dalitz plot, 01 natural sciences, Nuclear magnetic resonance, KEKB, 0103 physical sciences, CP violation, 010306 general physics, Bar (unit)
Abstract: We report a measurement of CP violating asymmetries in B-0 ((B-0) over bar) -> (K+K-KS0) decays with a time-dependent Dalitz approach. This analysis is based on a data sample of 657 x 10(6) B (B) over bar pairs accumulated at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. As the result of an unbinned maximum likelihood fit to the selected candidates, the mixing-induced and direct CP violation parameters phi(eff)(1) and A(CP) are obtained for B-0 -> phi(1020)K-S(0), B-0 -> f(0)(980)K-S(0), and other B-0 -> (K+K-KS0) decays. We find four solutions that describe the data. There are phi(eff)(1) (B-0 -> phi(1020)K-S(0)) = (32.2 +/- 9.0 +/- 2.6 +/- 1.4); phi(eff)(1)(B-0 -> phi(1020)K-S(0)) = 26.2 +/- 8.8 +/- 2.7 +/- 1.2); phi(eff)(1)(B-0 phi(1020)K-S(0)) = (27.3 +/- 8.6 +/- 2.8 +/- 1.3); and phi(eff)(1)(B-0 -> phi(1020)K-S(0)) = (24.3 +/- 8.0 +/- 2.9 +/- 5.2). The values for the CP violating phase in B-0 -> phi(1020)K-S(0) are similar, but other properties of the Dalitz plot are quite different for the four solutions. These four solutions have consistent phi(eff)(1) values for all three B-meson decay channels and none of them deviates significantly from the values measured in B -> (c (c) over bar )K-0 decays with the currently available statistics. In addition, we find no significant direct CP violation.
Published: 2010

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

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

37. Search forBs0→hhdecays at theΥ(5S)resonance

Author: H. Miyata, Y. Hoshi, S. Nishida, Marko Petrič, H. J. Hyun, P. Smerkol, P. Goldenzweig, Y. Iwasaki, M. Shapkin, S. Neubauer, Y. J. Kwon, M. Tanaka, Robin Wedd, M. Röhrken, Y. J. Kim, K. F. Chen, O. Schneider, C. C. Chiang, M. Dash, T. Iijima, T. E. Browder, S. Uehara, B. Golob, V. Bhardwaj, M. Iwasaki, H. Ha, B. R. Ko, V.N. Zhilich, B.A. Shwartz, Byung Gu Cheon, H. Hayashii, T. Kuhr, M. Danilov, M. J. Kim, K. Miyabayashi, M. Starič, C. W. Park, R. Pestotnik, S. L. Olsen, P. Križan, J. Haba, Vladimir Zhulanov, M. E. Sevior, Antonio Limosani, W. S. Hou, K. Belous, S. Korpar, H. Nakazawa, Vladislav Balagura, C. C. Zhang, Andrey Sokolov, K. Vervink, A. J. Schwartz, H. J. Kim, O. Nitoh, K. Inami, J. H. Kang, M. Watanabe, K. Nishimura, S. K. Kim, A. Das, H. Park, A. Bozek, Y. Watanabe, C. C. Peng, Chang Liu, J. Li, J. G. Shiu, Hiroaki Aihara, K. Kinoshita, T. Zivko, J. Dalseno, Tariq Aziz, G. N. Taylor, C. Z. Yuan, I. S. Cho, Sunmin Ryu, E. Won, S. Okuno, Y. Choi, S. Ogawa, T. Aushev, D. Liventsev, K. Trabelsi, C. P. Shen, P. Krokovny, I. Adachi, G. S. Varner, E. L. Barberio, O. Zyukova, Y. Teramoto, Bruce Yabsley, R. Itoh, C. H. Wang, S. Uno, C. Schwanda, A. Chen, P. Wang, N. J. Joshi, H. K. Park, Y. Yamashita, K. Sumisawa, P. Chang, J. Wicht, Jung-Hyun Kim, S.I. Eidelman, Y. Chao, S. H. Kyeong, K. Senyo, R. Louvot, G. B. Mohanty, T. Kawasaki, W. Dungel, A.E. Bondar, Peter Kodys, Zhenyu Zhang, A. Drutskoy, Yasuyuki Horii, R. Mizuk, Yoshinobu Unno, Y. Sakai, M. C. Chang, M. Iwabuchi, L. E. Piilonen, G. Pakhlova, T. Julius, Po-Hsun Chen, R. Chistov, T. Sumiyoshi, M. Nakao, Sang Hoon Lee, S. McOnie, H. O. Kim, Kevin Varvell, A. Matyja, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, M. J. Lee, and M. Bračko
Subjects: Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Analytical chemistry, Resonance, 01 natural sciences, Particle decay, KEKB, Pion, Nuclear magnetic resonance, 0103 physical sciences, 010306 general physics, Bar (unit)
Abstract: We have searched for B-s(0) --> hh decays, where h stands for a charged or neutral kaon, or a charged pion. These results are based on a 23: 6 fb(-1) data sample collected with the Belle detector on the Y(5S) resonance at the KEKB asymmetric-energy e(+)e(-) collider, containing 1.25 x 10(6) B-s(()*())(B) over bar (()(s)*()) events. We observe the decay B-s(0) --> K+K- and measure its branching fraction, B(B-s(0) --> K+K-) = [3.8(-0.9)(+1.0)(stat) +/- 0.5(syst) +/- 0.5(f(s))] x 10(-5). The first error is statistical, the second is systematic, and the third error is due to the uncertainty in the B-s(0) production fraction in e(+)e(-) --> b (b) over bar events. No significant signals are seen in other decay modes, and we set upper limits at the 90% confidence level: B(B-s(0) --> K- pi+) pi(+)pi(-)) K-0(K) over bar (0)) < 6.6 x 10(-5).
Published: 2010

38. Evidence forB→Kη′γdecays at Belle

Author: M. Z. Wang, K. Kinoshita, S. Suzuki, G. N. Taylor, S. H. Kyeong, G. Pakhlova, R. Louvot, V.E. Shebalin, A. Zupanc, M. Starič, I. S. Cho, C. Liu, J. G. Shiu, C. H. Wang, O. Nitoh, T. E. Browder, B.A. Shwartz, M. Nakao, Phillip Urquijo, H. Nakazawa, K. Senyo, S. McOnie, T. Iijima, T. Kawasaki, Y. J. Kwon, S. Uno, Jung-Hyun Kim, H. J. Hyun, K. Inami, H. Miyata, V.M. Aulchenko, Vladimir Zhulanov, M. Bischofberger, T. Sumiyoshi, Anton Poluektov, O. Schneider, Y. Hoshi, S.I. Eidelman, T. Kuhr, M. E. Sevior, E. L. Barberio, O. Zyukova, D. Liventsev, S. Nishida, Sang Hoon Lee, Z. P. Zhang, A. Ishikawa, S. Okuno, A. Bay, B. G. Cheon, J. Schümann, H. O. Kim, G. S. Varner, C. W. Park, P. Križan, Y. I. Kim, A. Kuzmin, J. B. Singh, R. Itoh, P. Pakhlov, Motoki Iwasaki, L. E. Piilonen, Y. Teramoto, Bruce Yabsley, K. Belous, P. Wang, A. Drutskoy, Rakesh Kumar, A. Bozek, A. Vinokurova, Y. Chao, Kevin Varvell, A. Matyja, V.N. Zhilich, T. Mori, H. Aihara, Y. Usov, J. Wicht, W. S. Hou, H. Kawai, Y. Watanabe, D. H. Kah, Yasushi Nagasaka, T. Zivko, P. Krokovny, Yasuyuki Horii, T. Lesiak, K. Arinstein, Andrey Sokolov, K. Sumisawa, D. Epifanov, R. Mizuk, E. Won, B. R. Ko, A.E. Bondar, K. S. Park, V. Bhardwaj, Vladislav Balagura, H. Sahoo, K. Trabelsi, Antonio Limosani, K. Vervink, Y. Sakai, P. Goldenzweig, M. J. Lee, M. Bračko, H. Yamamoto, Samo Stanič, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, A. Chen, Y. Choi, J. Dalseno, J. Li, M. Shapkin, Robin Wedd, Y. J. Kim, H. Ozaki, M. Dash, R. Pestotnik, I. Adachi, Y. Unno, S. Uehara, H. Ha, N. Katayama, H. K. Park, and Y. Yamashita
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Gamma ray, 01 natural sciences, Nuclear physics, Particle decay, KEKB, 0103 physical sciences, CP violation, High Energy Physics::Experiment, B meson, 010306 general physics, Radioactive decay
Abstract: We present the results of a search for the radiative decay B -> K eta 'gamma and find evidence for B+ -> K+eta 'gamma decays at the 3.3 standard deviation level with a partial branching fraction of (3.6 +/- 1.2 +/- 0.4) x 10(-6), where the first error is statistical and the second systematic. This measurement is restricted to the region of combined K eta ' invariant mass less than 3.4 GeV/c(2). A 90% confidence level upper limit of 6.4 x 10(-6) is obtained for the partial branching fraction of the decay B-0 -> K-0 eta 'gamma in the same K eta ' invariant mass region. These results are obtained from a 605 fb(-1) data sample containing 657 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
Published: 2010

39. Measurement ofΥ(5S)decays toB0andB+mesons

Author: H. Kichimi, T. Tsuboyama, J. Haba, B.A. Shwartz, Vladimir Zhulanov, M. E. Sevior, T. Iijima, B. R. Ko, O. Nitoh, V. Bhardwaj, K. Miyabayashi, Vladislav Balagura, A. Kuzmin, Frank Simon, M. Z. Wang, K. Kinoshita, A. M. Bakich, Z. Natkaniec, T. Ohshima, P. Krokovny, K. Sumisawa, N. Gabyshev, Y. Sakai, B. G. Cheon, K. Trabelsi, Anton Poluektov, C. P. Shen, A. J. Schwartz, Y. Iwasaki, S. Korpar, Anze Zupanc, Y. J. Kwon, Marko Petrič, Samo Stanič, H. J. Hyun, H. Hayashii, P. Smerkol, K. Vervink, O. Schneider, J. G. Shiu, J. Dalseno, D. Liventsev, M. Iwabuchi, L. E. Piilonen, G. Pakhlova, G. S. Varner, Y. Miyazaki, S. Uno, C. Schwanda, Y. Choi, R. Itoh, C. Kiesling, S. Nishida, T. Julius, P. Wang, Po-Hsun Chen, M. Bračko, K. Inami, R. Mussa, S. Okuno, R. Louvot, M. Shapkin, T. Aushev, T. Sumiyoshi, T. E. Browder, Sang Hoon Lee, G. B. Mohanty, Y. Teramoto, Bruce Yabsley, K. Senyo, H. K. Park, M. J. Kim, Y. Yamashita, M. Danilov, J. H. Kang, R. Pestotnik, Z. P. Zhang, M. Starič, Y. Chao, H. O. Kim, T. Kumita, S. H. Kyeong, A. Chen, H. Park, A. Bozek, C. Liu, J. Li, W. Dungel, M. Nakao, S. McOnie, Y. Unno, I. Adachi, H. J. Kim, Kevin Varvell, A. Matyja, T. Mori, H. Aihara, Y. Usov, W. S. Hou, H. Ha, N. Katayama, B. Golob, J. S. Lange, Sunmin Ryu, E. Won, V.M. Aulchenko, Yasushi Nagasaka, Y. Watanabe, S. K. Choi, A. Drutskoy, Yasuyuki Horii, A.E. Bondar, Z. Doležal, J. Wicht, H. Miyata, M. Bischofberger, Y. Hoshi, S.I. Eidelman, S. L. Olsen, D. H. Kah, T. Zivko, and Y. B. Hsiung
Subjects: Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, Analytical chemistry, 01 natural sciences, KEKB, Isospin, 0103 physical sciences, B meson, Atomic physics, 010306 general physics, Bar (unit)
Abstract: Decays of the Gamma(5S) resonance to channels with B+ and B-0 mesons are studied using a 23.6 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. Fully reconstructed B+ -> J/psi K+, B-0 -> J/psi K-*0, B+ ->(D) over bar (0)pi(+), and B-0 -> D-pi(+) decays are used to obtain the charged and neutral B production rates per b (b) over bar event, f(B+) = (72.1(-3.8)(+3.9) +/- 5.0)% and f(B-0) = (77.0(-5.6)(+5.8) +/- 6.1)%. Assuming equal rates to B+ and B-0 mesons in all channels produced at the Gamma(5S) energy, we measure the fractions for transitions to two-body and three-body channels with B meson pairs, f(B (B) over bar) = (5.5(-0.9)(+1.0) +/- 0.4)%, f(B (B) over bar* + B*(B) over bar) = (13.7 +/- 1.3 +/- 1.1)%, f(B*(B) over bar*) = (37.5(-1.9)(+2.1) +/- 3.0)%, f(B (B) over bar) = (5.5(-0.9)(+1.0) +/- 0.4)%, f(B (B) over bar* + B*(B) over bar) = (13.7 +/- 1.3 +/- 1.1)%, f(B*(B) over bar*) = (37.5(-1.9)(+2.1) +/- 3.0)%, f(B (B) over bar pi) = (0.0 +/-1.2 +/- 0.3)%, f(B (B) over bar*pi + B*(B) over bar pi) = (7.3(-2.1)(+2.3) +/- 0.8)%, and f(B*(B) over bar*pi) = (1.0(-1.3)(+1.4) +/- 0.4)%. The latter three fractions are obtained assuming isospin conservation.
Published: 2010

40. Evidence for directCPviolation in the decayB±→D(*)K±,D→KS0π+π−and measurement of the CKM phaseϕ3

Author: H. K. Park, Y. Yamashita, Andrey Sokolov, V.N. Zhilich, J. H. Kang, S. H. Kyeong, I. S. Cho, Kevin Varvell, C. H. Wang, A. Matyja, K. Nishimura, T. Iijima, S. Neubauer, M. Watanabe, K. Miyabayashi, M. Z. Wang, S. Nishida, K. Kinoshita, T. Kuhr, H. Aihara, Y. Usov, M. Dash, H. Sahoo, K. Trabelsi, S. L. Olsen, C. P. Shen, X. L. Wang, M. J. Kim, Y. Sakai, B. G. Cheon, B. Golob, N. J. Joshi, D. H. Kah, K. F. Chen, A. Vinokurova, P. Chang, A. J. Schwartz, T. Tsuboyama, T. Sumiyoshi, J. Li, C. Liu, P. Krokovny, M. Starič, Jung-Hyun Kim, J. S. Lange, S. Uehara, H. Ha, Sang Hoon Lee, N. Katayama, M. Tanaka, A. Bay, T. E. Browder, Y. Watanabe, D. Epifanov, P. Križan, T. Zivko, Y. B. Hsiung, B. R. Ko, K. Senyo, K. Belous, G. B. Mohanty, H. Yamamoto, I. Adachi, S. Korpar, M. Nakao, L. E. Piilonen, G. Pakhlova, M. Danilov, T. Kawasaki, O. Nitoh, W. S. Hou, S. McOnie, K. Inami, J. Haba, K. Sumisawa, H. Miyata, M. Bischofberger, Vladislav Balagura, P. Goldenzweig, Y. Hoshi, D. Liventsev, S.I. Eidelman, H. J. Kim, T. Julius, B.A. Shwartz, Po-Hsun Chen, Anze Zupanc, A. Chen, J. G. Shiu, Anton Poluektov, Y. Iwasaki, J. Dalseno, A.E. Bondar, G. S. Varner, Y. J. Kwon, A. Bozek, Vladimir Zhulanov, P. Kapusta, Marko Petrič, M. Shapkin, Robin Wedd, Z. P. Zhang, M. Röhrken, M. E. Sevior, H. J. Hyun, P. Smerkol, Sunmin Ryu, M. C. Chang, H. O. Kim, S. Okuno, A. Kuzmin, O. Schneider, P. Wang, Y. J. Kim, E. Won, Rakesh Kumar, Y. Choi, S. Ogawa, M. Iwabuchi, Y. Miyazaki, T. Aushev, Motoki Iwasaki, Bruce Yabsley, H. Hayashii, V.M. Aulchenko, E. L. Barberio, O. Zyukova, J. B. Singh, A. Drutskoy, Yasuyuki Horii, A. Garmash, Jingxu Wang, K. Vervink, W. Dungel, Peter Kodys, K. Arinstein, R. Mizuk, S. Uno, C. Schwanda, S. Suzuki, R. Louvot, V.E. Shebalin, Samo Stanič, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, C. Kiesling, M. J. Lee, and M. Bračko
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Unitarity, 010308 nuclear & particles physics, Electron–positron annihilation, Dalitz plot, 01 natural sciences, Particle decay, Pion, 0103 physical sciences, D meson, CP violation, High Energy Physics::Experiment, 010306 general physics
Abstract: We present a new measurement of the unitarity triangle angle phi(3) using a Dalitz plot analysis of the K-S(0)pi(+)pi(-) decay of the neutral D meson produced in B-+/- -> D-(*()) K-+/- decays. The method exploits the interference between D-0 and (D) over bar (0) to extract the angle phi(3), strong phase delta, and the ratio r of suppressed and allowed amplitudes. We apply this method to a 605 fb(-1) data sample collected by the Belle experiment. The analysis uses three decays: B-+/- -> DK +/-, and B-+/- -> D*K-+/- with D* -> D pi(0) and D* -> D gamma, as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain phi(3) = 78.4 degrees (+10.8 degrees)(-11.6 degrees) +/- 3.6 degrees (syst) +/- 8.9 degrees (model). CP conservation in this process is ruled out at the confidence level (1 - CL) = 5 X 10(-4), or 3.5 standard deviations.
Published: 2010

41. Search forB0→K0K¯0,B0→K0K0andB0→K+π−K∓π±decays

Author: A. J. Schwartz, T. Iijima, Y. F. Liu, A.E. Bondar, M. Tanaka, S. Neubauer, K. Miyabayashi, H. Sahoo, Z. P. Zhang, H. O. Kim, W. Ostrowicz, M. Feindt, Andrey Sokolov, B. R. Ko, P. Kapusta, S. Okuno, J. G. Shiu, S. L. Olsen, Z. Doležal, J. Dalseno, T. Aushev, I. S. Cho, M. Z. Wang, K. S. Park, K. Kinoshita, Y. J. Kwon, Phillip Urquijo, E. Nakano, J. H. Kang, K. Nishimura, C. Kiesling, V. Bhardwaj, J. Li, Antonio Limosani, O. Schneider, Y. Teramoto, Bruce Yabsley, Vladislav Balagura, H. Park, A. Bozek, M. J. Lee, K. Vervink, A. Das, M. Bračko, Anze Zupanc, V.M. Aulchenko, Kevin Varvell, A. Drutskoy, T. Zivko, Y. B. Hsiung, E. L. Barberio, A. M. Bakich, Z. Natkaniec, P. Chang, O. Zyukova, Marko Petrič, A. Matyja, Y. Choi, B. G. Cheon, Y. Sakai, P. Smerkol, T. E. Browder, N. Gabyshev, H. Aihara, T. Hara, J. S. Lange, Yasuyuki Horii, Y. Usov, Y. Chao, M. Starič, Y. Miyazaki, C. H. Wang, H. Hayashii, C. Liu, K. Belous, S. Korpar, H. K. Park, Y. Watanabe, S. Nishida, M. E. Sevior, Y. Yamashita, K. Trabelsi, Samo Stanič, P. Krokovny, Michal Kreps, D. Liventsev, A. Chen, M. Nakao, N. J. Joshi, C. C. Chiang, S. McOnie, G. S. Varner, M. Röhrken, K. Inami, P. Goldenzweig, R. Itoh, S. H. Kyeong, H. J. Kim, R. Sinha, Sunmin Ryu, H. Miyata, Sang Hoon Lee, K. Senyo, E. Won, H. Ha, R. Pestotnik, M. Bischofberger, T. Kawasaki, L. E. Piilonen, Y. Hoshi, S.I. Eidelman, M. Watanabe, G. Pakhlova, Po-Hsun Chen, C. W. Park, P. Križan, K. Hayasaka, Motoki Iwasaki, Y. Unno, O. Nitoh, J. Stypula, S. Ogawa, K. Sumisawa, K. Arinstein, C. Schwanda, and R. Louvot
Subjects: Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Branching fraction, Hadron, Analytical chemistry, 01 natural sciences, Particle decay, KEKB, Nuclear magnetic resonance, 0103 physical sciences, B meson, 010306 general physics, Dimensionless quantity, Bar (unit)
Abstract: We report a search for the decays B-0 -> K*(0)(K) over bar*(0) and B-0 -> K*K-0*(0) . We also measure other charmless decay modes with K+ pi K--(-)pi(+) and K+pi K--(+)pi(-) final states. The results are obtained from a data sample containing 657 x 10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric- energy e(+)e(-) collider. We set upper limits on the branching fractions for B-0 -> K*(0)(K) over bar*(0) and B-0 -> K*K-0*(0) of 0: 81 x 10(-6) and 0.20 x 10(-6), respectively, at the 90% confidence level.
Published: 2010

42. Measurement ofCPasymmetries inB0→K0π0decays

Author: M. Fujikawa, Y. Yusa, J. Dalseno, M. Hazumi, K. Sumisawa, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, V. Balagura, E. Barberio, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, A. Chen, B. G. Cheon, S.-K. Choi, Y. Choi, W. Dungel, S. Eidelman, M. Feindt, P. Goldenzweig, H. Ha, J. Haba, B.-Y. Han, K. Hara, Y. Hasegawa, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W.-S. Hou, H. J. Hyun, T. Iijima, K. Inami, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, T. Julius, J. H. Kang, H. Kawai, C. Kiesling, H. O. Kim, S. K. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Korpar, M. Kreps, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, Y.-J. Kwon, S.-H. Kyeong, S.-H. Lee, J. Li, C. Liu, D. Liventsev, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, R. Pestotnik, L. E. Piilonen, M. Rozanska, Y. Sakai, O. Schneider, A. J. Schwartz, K. Senyo, M. Shapkin, V. Shebalin, C. P. Shen, J.-G. Shiu, J. B. Singh, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, T. Sumiyoshi, G. N. Taylor, Y. Teramoto, K. Trabelsi, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, A. Vinokurova, C. H. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, Y. Yamashita, C. C. Zhang, Z. P. Zhang, and A. Zupanc
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Branching fraction, media_common.quotation_subject, Isospin, Pi, CP violation, Sum rule in quantum mechanics, Asymmetry, media_common
Abstract: We report measurements of CP violation parameters in $B^0 \to K^0 \pi^0$ decays based on a data sample of $657 \times 10^6 B\bar{B}$ pairs collected with the Belle detector at the KEKB $e^+ e^-$ asymmetric-energy collider. We use $B^0 \to K^0_S \pi^0$ decays for both mixing-induced and direct $CP$ violating asymmetry measurements and $B^0 \to K^0_L \pi^0$ decays for the direct CP violation measurement. The CP violation parameters obtained are $\sin 2 \phi_1^{\rm eff} = +0.67 \pm 0.31{(stat)} \pm 0.08 {(syst)}$ and $\mathcal{A}_{K^0 \pi^0} = +0.14 \pm 0.13{(stat)} \pm 0.06 {(syst)}$. The branching fraction of $B^0 \to K^0 \pi^0$ decay is measured to be $\mathcal{B}(B^0 \to K^0 \pi^0) = (8.7\pm0.5 (\rm{stat.})\pm0.6 (\rm{syst.}))\times 10^{-6}$. The observed $\mathcal{A}_{K^0 \pi^0}$ value differs by 1.9 standard deviations from the value expected from an isospin sum rule.
Published: 2010

43. Measurements of charmless hadronicb→spenguin decays in theπ+π−K+π−final state and first observation ofB0→ρ0K+π−

Author: J. Haba, R. Sinha, V.N. Zhilich, M. Shapkin, B. R. Ko, Robin Wedd, A. Zupanc, Y. J. Kim, P. Pakhlov, H. Ozaki, B. Y. Han, O. Nitoh, Y. Watanabe, Y. Choi, D. H. Kah, R. Louvot, J. G. Shiu, T. Hara, Vladislav Balagura, T. Sumiyoshi, Jeremy Dalseno, K. Miyabayashi, Phillip Urquijo, C. C. Chiang, T. Zivko, Hiroaki Aihara, J. Stypula, Andrey Sokolov, S. H. Kyeong, R. Pestotnik, H. Park, A. Bozek, H. J. Hyun, K. Inami, J. H. Kang, K. Vervink, M. Iwasaki, K. Nishimura, M. Nakao, A. Sekiya, H. Miyata, A. Vinokurova, M. Bischofberger, Y. Hoshi, A. J. Schwartz, Y. Miyazaki, J. Li, E. Won, M. C. Chang, C. Schwanda, S. McOnie, J. Schümann, K. Belous, S. Korpar, Chang Liu, Rakesh Kumar, K. Hayasaka, R. Mizuk, T. E. Browder, A. Ishikawa, A. Bay, S.I. Eidelman, H. Hayashii, L. E. Piilonen, C. W. Park, B. G. Cheon, G. Pakhlova, P. Križan, K. Trabelsi, M. Z. Wang, K. Kinoshita, C. P. Shen, A. Chen, Zhenyu Zhang, G. N. Taylor, I. Adachi, H. O. Kim, Yoshinobu Unno, I. S. Cho, Yasushi Nagasaka, S. Nishida, E. L. Barberio, O. Zyukova, A. Drutskoy, W. Dungel, C. H. Wang, K. Sumisawa, Y. I. Kim, Kevin Varvell, A. Matyja, H. K. Park, Y. Yamashita, H. Sahoo, Yoji Hasegawa, Yang Liu, S. Ogawa, S. Uehara, H. Ha, N. Katayama, E. Nakano, Jasvinder A. Singh, K. Sakai, T. Lesiak, B.A. Shwartz, M. Starič, N. J. Joshi, Vladimir Zhulanov, M. E. Sevior, Y. J. Kwon, O. Schneider, P. Goldenzweig, Jung-Hyun Kim, Y. Chao, G. S. Varner, R. Itoh, P. Wang, Y. Sakai, K. Senyo, T. Kawasaki, P. Kapusta, S. Okuno, Y. Teramoto, Bruce Yabsley, Anirban Das, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, M. J. Lee, M. Bračko, and Samo Stanič
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, media_common.quotation_subject, Hadron, Two-body problem, 01 natural sciences, Asymmetry, Nuclear physics, KEKB, 0103 physical sciences, CP violation, 010306 general physics, media_common
Abstract: We report measurements of charmless hadronic B0 decays into the π+π-K+π- final state. The analysis uses a sample of 657×106 BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the resonance. The decay B0→ρ0K+π- is observed for the first time; the significance is 5.0σ and the corresponding partial branching fraction for MKπ(0.75,1.20)GeV/c2 is [2.8±0.5(stat) ±0.5(syst)]×10-6. We also obtain the first evidence for B0→f0(980)K+π- with 3.5σ significance and for B0→π+π- K*0 with 4.5σ significance. For the two-body decays B0→ρ0K*0 and B0→f0(980)K*0, the significances are 2.7σ and 2.5σ, respectively, and the upper limits on the branching fractions are 3.4×10-6 and 2.2×10-6 at 90% confidence level. © 2009 The American Physical Society.
Published: 2009

44. Time-dependent Dalitz plot measurement ofCPparameters inB0→KS0π+π−decays

Author: J. H. Kang, A. Ishikawa, A. Bay, S. E. Lee, S. Nishida, C. W. Park, Y. Chao, Masahiro Fujikawa, M. Tanaka, Hirokazu Ishino, L. S. Peak, X. L. Wang, H. Nakazawa, H. Kawai, I. S. Cho, E. Nakano, Masashi Hazumi, H. J. Hyun, B. G. Cheon, A. Zupanc, Y. I. Kim, A. J. Schwartz, S. Uno, C. Schwanda, P. Krokovny, Y. Miyazaki, O. Nitoh, M. Starič, H. Sahoo, P. Goldenzweig, J. Li, K. Trabelsi, Joowon Lee, D. Heffernan, A. Bondar, S. W. Lin, Yasushi Nagasaka, T. Uglov, O. Zyukova, Y. Nakahama, K. Senyo, B. R. Ko, T. E. Browder, Samo Stanič, T. Kawasaki, K. S. Park, A. Matyja, R. Louvot, C. H. Wang, B. Y. Han, V. Bhardwaj, J. B. Singh, Vladislav Balagura, Y. Iwasaki, Y. J. Kwon, J. G. Shiu, A. Drutskoy, H. K. Park, A. M. Bakich, A. Sekiya, Z. Natkaniec, O. Schneider, Vladimir Zhulanov, Y. Yamashita, K. Vervink, Motoki Iwasaki, S. Eidelman, U. Bitenc, S. Okuno, M. E. Sevior, P. Pakhlov, M. Rozanska, G. S. Varner, N. Gabyshev, I. Tikhomirov, K. Miyabayashi, E. Won, A. Kuzmin, H. Aihara, T. Aushev, Yasuyuki Horii, A. Chen, A. Bozek, R. Itoh, M. Shapkin, S. Ogawa, P. Wang, Y. Teramoto, Bruce Yabsley, Yu. V. Usov, Y. J. Kim, H. Ozaki, C. Liu, Kazuhiko Hara, M. Bračko, R. Pestotnik, Y. Unno, K. Sumisawa, I. Adachi, Y. Choi, S. H. Kyeong, T. Sumiyoshi, J. Dalseno, M. Nakao, S. Uehara, H. Ha, N. Katayama, Y. Sakai, S. McOnie, R. Mizuk, Y. Watanabe, B. Shwartz, L. E. Piilonen, G. Pakhlova, Z. P. Zhang, H. O. Kim, M. Dash, B. Golob, P. Krian, W. S. Hou, K. Arinstein, H. Hayashii, D. H. Kah, K. Inami, K. Kinoshita, G. N. Taylor, T. Zivko, H. Miyata, Y. Hoshi, K. Hayasaka, and Andrey Sokolov
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Particle decay, KEKB, Electron–positron annihilation, media_common.quotation_subject, Dalitz plot, Resonance, CP violation, Asymmetry, Bar (unit), media_common
Abstract: We present a time-dependent Dalitz plot measurement of CP violation parameters in B-0 -> K-S(0)pi(+)pi(-) decays. These results are obtained from a large data sample that contains 657x10(6) B(B)over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. For the CP violation parameters, we obtain two consistent solutions that describe the data well. The first of these solutions may be preferred by external information from other measurements. There is no evidence for direct CP violation in B-0 ->rho(0)(770)K-S(0), B-0 -> f(0)(980)K-S(0) and B-0 -> K*+(892)pi(-), while measurements of mixing-induced CP violation in B-0 ->rho(0)(770)K-S(0) and B-0 -> f(0)(980)K-S(0) decays are consistent with that of b -> c(c)over bars decays. We also measured the phase difference between B-0 -> K*+(892)pi(-) and (B)over bar(0)-> K*-(892)pi(+), which may be used to extract phi(3).
Published: 2009

45. Observation ofB0→ΛΛ¯K0andB0→ΛΛ¯K*0at Belle

Author: K. Inami, L. S. Peak, P. Goldenzweig, S. Okuno, Byeong Rok Ko, W. S. Hou, Y. I. Kim, F. Mandl, H. Miyata, Y. Hoshi, Y. Teramoto, M. Starič, Bruce Yabsley, I. Tikhomirov, J. B. Singh, A. Chen, Masashi Hazumi, J. S. H. Lee, K. Hayasaka, T. E. Browder, Yasuyuki Horii, H. Sahoo, H. J. Hyun, Y. Choi, T. Uglov, T. Hara, Y. Watanabe, Yasushi Nagasaka, J. Dalseno, H. Kichimi, Y. Unno, A. Zupanc, I. Adachi, Y. Sakai, Y. Iwasaki, Y. J. Kwon, Y. Miyazaki, T. Lesiak, K. Senyo, C. W. Park, O. Nitoh, O. Schneider, E. Won, S. Korpar, M. Tanaka, T. Kawasaki, J. T. Wei, M. Shapkin, Robin Wedd, S. Ogawa, Y. J. Kim, H. Ozaki, Y. Chao, D. H. Kah, J. G. Shiu, B. Y. Han, D. Heffernan, T. Zivko, V.N. Zhilich, M. Dash, S. Uehara, H. Ha, G. S. Varner, R. Pestotnik, B. Shwartz, J. H. Kang, K. Sumisawa, M. Danilov, M. Rozanska, O. Zyukova, U. Bitenc, K. Miyabayashi, A.E. Bondar, P. Wang, T. Aushev, Antonio Limosani, S. Eidelman, P. Pakhlov, R. Mizuk, A. Bozek, A. Drutskoy, S. Nishida, K. Vervink, X. L. Wang, A. Sekiya, A. Ishikawa, A. Bay, S. E. Lee, P. Križan, C. Liu, M. Nakao, Motoki Iwasaki, S. McOnie, R. Louvot, Y. F. Liu, Z. Natkaniec, A. M. Bakich, Z. P. Zhang, S. Uno, K. S. Park, V. Bhardwaj, Vladislav Balagura, A. Matyja, M. J. Lee, H. Aihara, Y. Usov, M. Bračko, Hikaru Kawai, H. Hayashii, Hyunyong Kim, Y. W. Chang, M. Z. Wang, S. W. Lin, Samo Stanič, L. E. Piilonen, G. Pakhlova, N. J. Joshi, R. Chistov, C. H. Wang, H. K. Park, Y. Yamashita, S. H. Kyeong, and G. N. Taylor
Subjects: Combinatorics, Physics, Nuclear and High Energy Physics, Near threshold, Branching fraction, Energy (signal processing)
Abstract: We study the charmless decays $B\ensuremath{\rightarrow}\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}h$, where $h$ stands for ${\ensuremath{\pi}}^{+}$, ${K}^{+}$, ${K}^{0}$,${K}^{*+}$, or ${K}^{*0}$, using a $605\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. We observe ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}{K}^{0}$ and ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}{K}^{*0}$ with branching fractions of $({4.76}_{\ensuremath{-}0.68}^{+0.84}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.61(\mathrm{syst}))\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and $({2.46}_{\ensuremath{-}0.72}^{+0.87}\ifmmode\pm\else\textpm\fi{}0.34)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, respectively. The significances of these signals in the threshold-mass enhanced mass region, ${M}_{\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}}l2.85\text{ }\text{ }\mathrm{GeV}/{c}^{2}$, are $12.4\ensuremath{\sigma}$ and $9.3\ensuremath{\sigma}$, respectively. We also update the branching fraction $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}{K}^{+})=({3.38}_{\ensuremath{-}0.36}^{+0.41}\ifmmode\pm\else\textpm\fi{}0.41)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ with better accuracy, and report the following measurement or 90% confidence level upper limit in the threshold-mass-enhanced region: $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}{K}^{*+})=({2.19}_{\ensuremath{-}0.88}^{+1.13}\ifmmode\pm\else\textpm\fi{}0.33)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ with $3.7\ensuremath{\sigma}$ significance; $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}{\ensuremath{\pi}}^{+})l0.94\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$. A related search for ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}{\overline{D}}^{0}$ yields a branching fraction $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}{\overline{D}}^{0})=({1.05}_{\ensuremath{-}0.44}^{+0.57}\ifmmode\pm\else\textpm\fi{}0.14)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$. This may be compared with the large, $\ensuremath{\sim}{10}^{\ensuremath{-}4}$, branching fraction observed for ${B}^{0}\ensuremath{\rightarrow}p\overline{p}{\overline{D}}^{0}$. The ${M}_{\ensuremath{\Lambda}\overline{\ensuremath{\Lambda}}}$ enhancements near threshold and related angular distributions for the observed modes are also reported.
Published: 2009

46. Search forB→πℓ+ℓ−decays at Belle

Author: D. Liventsev, H. J. Hyun, Jasvinder A. Singh, S. W. Lin, Joowon Lee, G. S. Varner, Y. Miyazaki, T. Iijima, V. M. Aulchenko, R. Itoh, P. Wang, Yu. V. Usov, T. E. Browder, Antonio Limosani, C. C. Wang, M. Starič, H. Kichimi, K. Sumisawa, Tatiana Medvedeva, J. G. Shiu, Hirokazu Ishino, T. Lesiak, Y. Iwasaki, M. Tanaka, Y. Watanabe, Y. J. Kwon, O. Schneider, S. Nishida, Y. Choi, Y. Sakai, H. Miyata, Y. Hoshi, U. Bitenc, G. R. Moloney, A. Zupanc, W. T. Chen, J. Wicht, M. Shapkin, D. Heffernan, K. Senyo, O. Nitoh, S. Uno, C. Schwanda, H. K. Park, Y. J. Kim, H. Ozaki, S. Ogawa, T. Kawasaki, Y. Yamashita, P. Chang, J. T. Wei, F. Mandl, Hiroaki Aihara, M. Iwasaki, Y. I. Kim, Vladimir Zhulanov, D. H. Kah, Jung-Hyun Kim, M. D. Peters, O. Zyukova, S. H. Kyeong, H. Sahoo, T. Zivko, Zhenyu Zhang, P. Pakhlov, T. Uglov, A. Bondar, K. Belous, S. Korpar, E. Won, R. Pestotnik, A. Bozek, I. S. Cho, A. Somov, C. H. Wang, B. G. Cheon, S. Eidelman, I. Tikhomirov, A. Chen, M. Bračko, P. Kapusta, Yoshinobu Unno, S. Okuno, T. Aushev, Y. Teramoto, V.N. Zhilich, Samo Stanič, Y. Chao, A. M. Bakich, T. Ohshima, W. S. Hou, K. Arinstein, B. Golob, I. Adachi, M. Z. Wang, K. Kinoshita, G. N. Taylor, K. F. Chen, S. Uehara, Vladislav Balagura, L. E. Piilonen, G. Pakhlova, S. K. Kim, K. Inami, R. Chistov, P. Krokovny, Rakesh Kumar, H. Hayashii, T. Sumiyoshi, Jeremy Dalseno, F. Takasaki, C. W. Park, H. O. Kim, J. H. Kang, M. Nakao, S. McOnie, and A. Matyja
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Branching fraction, Electron–positron annihilation, law.invention, Nuclear physics, Particle decay, KEKB, Pion, law, B meson, Collider
Abstract: We present a search for the decays B+→π+l+l- and B0→π0l+l-, where l+l- is either a μ+μ- or e+e- pair, with a data sample of 657×106 BB pairs collected with the Belle detector at the KEKB e+e- collider. Signal events are reconstructed from a charged or a neutral pion candidate and a pair of oppositely charged electrons or muons. No significant signal is observed and we set an upper limit on the isospin-averaged branching fraction B(B→πl+l-)
Published: 2008

47. Measurements of time-dependentCPviolation inB0→ψ(2S)KS0decays

Author: R. Mizuk, Yoshinobu Unno, S. Noguchi, J. G. Shiu, H. Miyake, A. Somov, L. S. Peak, H. Palka, L. E. Piilonen, I. S. Cho, H. J. Hyun, W. T. Chen, G. Pakhlova, Hirokazu Ishino, F. Mandl, Vladimir Zhulanov, D. Liventsev, Phillip Urquijo, Antonio Limosani, K. Vervink, K. Kinoshita, C. H. Wang, Kazuhiko Hara, M. E. Sevior, Y. Miyazaki, G. S. Varner, G. R. Moloney, M. Starič, Y. Chao, R. Chistov, M. J. Lee, Y. Yamashita, K. Ueno, W. S. Hou, G. N. Taylor, D. H. Kah, M. Bračko, R. Itoh, W. A. Mitaroff, M. Iwasaki, K. Arinstein, E. Nakano, H. Kichimi, E. L. Barberio, K. Miyabayashi, Y. B. Hsiung, A. Zupanc, P. Wang, Yu. V. Usov, O. Nitoh, A. M. Bakich, T. Sumiyoshi, T. Lesiak, K. Trabelsi, Z. Natkaniec, T. Ohshima, H. Miyata, M. Tanaka, K. Sumisawa, P. Kapusta, S. Okuno, A. Ishikawa, A. Bondar, K. Belous, S. Korpar, P. Krokovny, N. J. Joshi, Y. J. Kwon, Hiroaki Aihara, Y. Watanabe, C. P. Shen, A. Bay, Y. Hoshi, S. E. Lee, I. Bedny, J. Li, M. Dash, F. Takasaki, C. W. Park, O. Schneider, K. Hayasaka, A. J. Schwartz, P. Križan, T. Aushev, B. Shwartz, H. J. Kim, J. Haba, B. Golob, Y. Teramoto, Y. Sakai, Y. Choi, D. Heffernan, U. Bitenc, T. Hara, K. Senyo, H. Hayashii, M. C. Chang, J. H. Kang, Rakesh Kumar, Vladislav Balagura, S. L. Olsen, S. Uno, C. Schwanda, Tatiana Medvedeva, S. Ogawa, Samo Stanič, E. Won, M. Shapkin, Masashi Hazumi, Robin Wedd, J. Dalseno, Hitoshi Yamamoto, H. Sahoo, Y. Kuroki, Y. J. Kim, K. Inami, S. Eidelman, R. Pestotnik, C. C. Zhang, Kevin Varvell, H. Shibuya, B. G. Cheon, Zhenyu Zhang, A. Matyja, I. Tikhomirov, A. Chen, A. Drutskoy, M. Nakao, S. McOnie, I. Adachi, P. Pakhlov, S. Villa, H. Park, A. Bozek, Joowon Lee, T. E. Browder, C. C. Kuo, Y. Kozakai, S. Uehara, H. Ha, N. Katayama, S. Bahinipati, S. Nishida, and X. L. Wang
Subjects: Physics, Nuclear and High Energy Physics, Particle decay, Crystallography, Particle physics, KEKB, Electron–positron annihilation, Resonance, CP violation, B meson
Abstract: We report improved measurements of time-dependent CP violation parameters for B{sup 0}(B{sup 0}){yields}{psi}(2S)K{sub S}{sup 0}. This analysis is based on a data sample of 657x10{sup 6} BB pairs collected at the {upsilon}(4S) resonance with the Belle detector at the KEKB energy-asymmetric e{sup +}e{sup -} collider. We fully reconstruct one neutral B meson in the {psi}(2S)K{sub S}{sup 0} CP-eigenstate decay channel, and the flavor of the accompanying B meson is identified to be either B{sup 0} or B{sup 0} from its decay products. CP violation parameters are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays: S{sub {psi}}{sub (2S)K{sub S{sup 0}}=+0.72{+-}0.09(stat){+-}0.03(syst), A{sub {psi}}{sub (2S)}K{sub S{sup 0}}=+0.04{+-}0.07(stat){+-}0.05(syst). These results are in agreement with results from measurements of B{sup 0}{yields}J/{psi}K{sup 0}.
Published: 2008

48. Improved measurement of time-dependentCPviolation inB0→J/ψπ0decays

Author: P. Pakhlov, S. Shinomiya, Y. Watanabe, H. Park, A. Bozek, Tariq Aziz, Y. J. Kwon, O. Schneider, B. Shwartz, K. Inami, M. Iwasaki, Y. Sakai, Y. Choi, M. Yamauchi, T. Hara, A.S. Kuzmin, S. Okuno, T. Iijima, Joowon Lee, T. E. Browder, Masashi Hazumi, T. Sumiyoshi, H. Nakazawa, I. Tikhomirov, A. Chen, Kevin Varvell, A. Ishikawa, S. Noguchi, Osamu Tajima, A. Zupanc, M. Starič, T. Aushev, A. Bay, S. E. Lee, T. Nozaki, F. Takasaki, A. J. Schwartz, P. Križan, H. J. Kim, O. Nitoh, C. C. Kuo, Zhenyu Zhang, M. Shapkin, H. Sahoo, Y. Teramoto, D. Epifanov, Y. Ushiroda, A. Sekiya, A. Bondar, T. Uglov, K. Belous, S. Korpar, Y. J. Kim, J. B. Singh, H. Ozaki, S. K. Choi, D. Liventsev, H. Hayashii, S. Nishida, Hiroaki Aihara, Andrey Sokolov, K. S. Park, T. Mori, L. E. Piilonen, X. L. Wang, G. S. Varner, K. Kinoshita, C. Z. Yuan, J. H. Kang, V.N. Zhilich, Vladislav Balagura, Byung Gu Cheon, S. L. Olsen, R. Pestotnik, Kazuhiko Hara, G. Pakhlova, Vladimir Zhulanov, K. Tamai, J. Dalseno, C. C. Wang, K. Trabelsi, C. P. Shen, S. Blyth, J. G. Shiu, G. N. Taylor, S. Eidelman, Phillip Urquijo, W. A. Mitaroff, K. Miyabayashi, E. L. Barberio, C. C. Zhang, K. Sumisawa, M. Dash, H. Shibuya, M. Tanaka, R. Itoh, P. Wang, Yu. V. Usov, V. Bhardwaj, E. Nakano, D. H. Kah, R. Chistov, R. Mizuk, Yu-xi Liu, T. Higuchi, S. Uno, W. S. Hou, I. S. Cho, Y. Yusa, J. Haba, K. Senyo, T. Kawasaki, D. Heffernan, P. Chang, S. Suzuki, Yoshinobu Unno, H. Miyata, E. Won, Y. Hoshi, A. Yamaguchi, S. Ogawa, S. W. Lin, Rakesh Kumar, H. J. Hyun, K. Ueno, M. Nakao, S. McOnie, C. H. Wang, Tatiana Medvedeva, Y. Yamashita, T. Lesiak, S. U. Kataoka, U. Bitenc, Hirokazu Ishino, S. K. Kim, S. Villa, K. F. Chen, S. Uehara, H. Ha, H. Kawai, A. Somov, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, Samo Stanič, M. J. Lee, and M. Bračko
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle decay, Particle physics, Web of science, Electron–positron annihilation, media_common.quotation_subject, CP violation, Asymmetry, Standard Model, media_common
Abstract: Reference EPFL-ARTICLE-154406doi:10.1103/PhysRevD.77.071101View record in Web of Science Record created on 2010-11-05, modified on 2017-12-10
Published: 2008

49. Measurements of time-dependentCPviolation inB0→ωKS0,f0(980)KS0,KS0π0andK+K−KS0decays

Author: Y. Chao, K.-F. Chen, H. Miyake, O. Tajima, K. Trabelsi, K. Abe, I. Adachi, H. Aihara, D. Anipko, A. M. Bakich, E. Barberio, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, M. Bračko, T. E. Browder, M.-C. Chang, P. Chang, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, J. Dragic, A. Drutskoy, S. Eidelman, S. Fratina, N. Gabyshev, B. Golob, H. Ha, J. Haba, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, D. Heffernan, T. Higuchi, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. J. Kim, H. O. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, M. J. Lee, T. Lesiak, A. Limosani, S.-W. Lin, D. Liventsev, T. Matsumoto, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, D. Mohapatra, G. R. Moloney, Y. Nakahama, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, R. Pestotnik, L. E. Piilonen, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, H. Shibuya, J. B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, G. Varner, K. E. Varvell, S. Villa, A. Vinokurova, C. H. Wang, Y. Watanabe, E. Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Y. Yusa, V. Zhilich, V. Zhulanov, and A. Zupanc
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle decay, Positron, Distribution (number theory), media_common.quotation_subject, Electron–positron annihilation, CP violation, Electron, Asymmetry, Particle identification, media_common
Abstract: Reference EPFL-ARTICLE-154434doi:10.1103/PhysRevD.76.091103View record in Web of Science Record created on 2010-11-05, modified on 2017-05-12
Published: 2007

50. Study ofB¯0→D0π+π−decays

Author: A. Kuzmin, K. Abe, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, V. Balagura, E. Barberio, M. Barbero, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, M.-C. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, Y. J. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, Y.-J. Kwon, S. E. Lee, T. Lesiak, S.-W. Lin, G. Majumder, F. Mandl, T. Matsumoto, S. McOnie, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, V. Sidorov, A. Sokolov, A. Somov, S. Stanič, M. Starič, H. Stoeck, K. Sumisawa, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, S. Villa, C. H. Wang, M.-Z. Wang, Y. Watanabe, E. Won, C.-H. Wu, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, L. M. Zhang, Z. P. Zhang, V. Zhilich, and A. Zupanc
Subjects: Physics, Nuclear and High Energy Physics, Crystallography, KEKB, Meson, Branching fraction, Pi, Dalitz plot, B meson, Belle experiment
Abstract: We report the results of a study of neutral B meson decays to the D^0 pi+ pi- final state, where the D^0 is fully reconstructed. The results are obtained from an event sample containing 388 million BB-bar -meson pairs collected in the Belle experiment at the KEKB e^+e^- collider. The total branching fraction of the three-body decay B(bar{B}^0 -> D^0 pi^+ pi^-) =(8.4+-0.4(stat.)+-0.8(syst.)) 10^{-4} has been measured. The intermediate resonant structure of these three-body decays has been studied. From a Dalitz plot analysis we have obtained the product of the branching fractions for D^{*+}_2 and D^{*+}_0 production: B(bar{B}^0-> D^{*+}_2 pi^-) B(D_2^{*+}-> D^{0}\pi^+)= (2.15+-0.17(stat.)+-0.29(syst.)+-0.12(mod.))10^{-4}, and B(bar{B}^0-> D^{*+}_0 pi^-) B(D_0^{*+}-> D^{0} pi^+)= (0.60+-0.13(stat.)}+-0.15(syst.)+-0.22(mod.))10^{-4}. This is the first observation of the bar{B}^0-> D^{*+}_0 pi^- decay. The bar{B^0} -> D^0 rho^0 and D^0f_2 branching fractions are measured to be: B(bar{B}^0->D^0 rho^0)=(3.19+-0.20(stat.)+-0.24(syst.)+-0.38(mod.)) 10^{-4},and B(bar{B}^0-> D^0 f_2)=(1.20+-0.18(stat.)+-0.21(syst.)+-0.32(mod.)) 10^{-4}.
Published: 2007

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