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1. Precise Measurement of the D0 and D+ Lifetimes at Belle II

Author

R. Mussa, F. Pham, H. Svidras, T. Lam, A. Ishikawa, L. E. Piilonen, M. Nakao, P. Križan, K. Yoshihara, Concettina Sfienti, P. Oskin, U. Tamponi, M. Iwasaki, T. Iijima, A. Kuzmin, M. Welsch, T. M. G. Kraetzschmar, E.-J. Jang, B. G. Cheon, S. Ogawa, G. Giakoustidis, H. Ono, L. M. Cremaldi, K. Matsuoka, T. Kuhr, G. L. Pinna Angioni, S. E. Vahsen, I. Ueda, S. Pardi, N. Rad, M. Bračko, A. Gabrielli, Antonio Budano, Y. Iwasaki, Y. J. Kwon, J. F. Strube, S. Kohani, L. Lanceri, S. Uehara, Makoto Tabata, Jakub Kandra, N. Rout, P. Leitl, T. V. Dong, W. Gradl, K. Flood, C. Niebuhr, X. Y. Zhou, S. Sandilya, M. Starič, M. Hernandez Villanueva, Hidekazu Kakuno, S. Y. Suzuki, L. Corona, R. Stroili, M. Remnev, S. Baehr, E. Wang, F. Meier, I. Ripp-Baudot, Shih-Chang Lee, S. Pokharel, R. Itoh, S. Jia, Dipak Kumar Sahoo, D. Bodrov, P. Bambade, Luka Santelj, Bruce Yabsley, T. Matsuda, Enrico Bernieri, S. Uno, H. Junkerkalefeld, L. Aggarwal, Sunil Bansal, Y. Unno, C. Murphy, C. Wessel, M. Niiyama, Rok Pestotnik, D. Biswas, T. Tsuboyama, F. Abudinén, M. Piccolo, Takeo Higuchi, Carlos Marinas, J. M. Roney, J. Libby, D. M. Asner, S. Halder, K. Hayasaka, R. Tiwary, C. Miller, C. H. Kim, F. Di Capua, T. Koga, A. B. Kaliyar, A. Pathak, K. Tanida, G. Dujany, H. G. Moser, T. Bilka, Daniel Greenwald, F. Tenchini, S. Prell, Seema Bahinipati, Andrey Sokolov, T. Uglov, B. Paschen, G. De Pietro, B. Shwartz, Y. Uematsu, M. Takizawa, Yu. Onishchuk, A. Vinokurova, S. Dubey, I. Heredia-De La Cruz, K. Hara, Y. Seino, H. Tanigawa, B. Golob, M. Bertemes, C.-L. Hsu, M. Watanabe, H. Ozaki, T. E. Browder, A. Glazov, O. Hartbrich, J. Schueler, M. T. Prim, Takeo Kawasaki, D. Y. Kim, Dmytro Levit, A. Natochii, J. Baudot, C. H. Li, K. Lieret, K. Inami, V. Zhukova, Y. Onuki, A. Fodor, Kouji Nakamura, S. Bilokin, R. Žlebčík, A. Baur, P. Krokovny, Sw. Banerjee, John Yelton, S. Stefkova, Q. D. Zhou, D. Cinabro, R. Giordano, Shuji Tanaka, E. C. Hill, Hamad Ahmed, Q. Y. Liu, M. Dorigo, E. Kovalenko, K. Unger, P. Pakhlov, Rakesh Kumar, T. Podobnik, A. J. Schwartz, Z. Doležal, G. Inguglia, G. Nazaryan, P. Chang, M. Kumar, I. Domínguez Jiménez, V. Bhardwaj, Z. Liptak, E. Bertholet, I. Adachi, F. Forti, M. Mrvar, J. Serrano, H. Ye, M. Barrett, E. Won, K. H. Kang, K. Cho, N. Molina-Gonzalez, A. Passeri, L. Zani, G. Polat, R. Kowalewski, K. Trabelsi, J. Guilliams, G. Finocchiaro, J. Bennett, A. Sangal, G. Casarosa, C. Praz, T. Gu, M. Z. Wang, K. Kinoshita, Peter Kodys, W. W. Jacobs, M. Bessner, G. S. Varner, A. Gellrich, S. Raiz, Abner Soffer, Elisa Manoni, K. Chirapatpimol, S. Reiter, N. Gabyshev, D. Červenkov, Nils Braun, T. Czank, S. Cunliffe, P. L. M. Podesta-Lerma, B. Spruck, I. M. Peruzzi, R. de Sangro, D. Epifanov, M. Campajola, H. Purwar, A. Selce, E. Solovieva, T. Lueck, A. Bolz, Somnath Choudhury, T. Hara, H. Aihara, K. Lautenbach, A. Panta, M. Merola, J. G. Shiu, Y.-T. Chen, Samo Korpar, Claudia Cecchi, G. de Marino, A. Rostomyan, A. Paladino, M. C. Chang, S. Bussino, V.N. Zhilich, L. B. Rizzuto, Agnese Martini, F. Bianchi, Y. Ushiroda, N. Toutounji, Jürgen Becker, S. Yamada, R. Manfredi, Hitoshi Hirata, Y. Kato, D. Ferlewicz, H. Nakazawa, P. Branchini, S. Bettarini, Yu. V. Usov, W. Sutcliffe, J. H. Yin, B. G. Fulsom, Florian Urs Bernlochner, S. Nishida, G. Karyan, A. Di Canto, Jochen Dingfelder, K. Senyo, H. M. Wakeling, J. Wiechczynski, T. K. Pedlar, K. Uno, Andreas Warburton, C. Kiesling, W. B. Yan, D. A. Sanders, Phillip Urquijo, R. Godang, Ya-Qiu Jin, G. De Nardo, D. Tonelli, R. Mizuk, M. Sumihama, C. H. Chen, Z. Natkaniec, A. Vossen, S. K. Choi, L. K. Li, E. R. Oxford, K. Miyabayashi, S. Duell, R. Peschke, E. Paoloni, K. Nishimura, Frank Simon, Seongbae Yang, N. Taniguchi, C. Hearty, Y. Guan, Prafulla Kumar Behera, M. Destefanis, M. Hoek, Matthias Bauer, R. Cheaib, K. Kumara, S. Spataro, X. P. Xu, E. Prencipe, M. Rozanska, H. Hayashii, Z. S. Stottler, A. K. Giri, R. J. Sobie, D. Matvienko, L. Vitale, N. K. Nisar, H. K. Moon, J. Kumar, S.-H. Park, J. S. Lange, C. Hadjivasiliou, R. Karl, T. D. Kimmel, Stefano Longo, T. Pang, S. Patra, A. Sibidanov, K. Adamczyk, F. Dattola, L. Cao, A. Bobrov, D. Liventsev, F. R. Le Diberder, Yongsun Kim, B. Gobbo, K. Lalwani, P. Goldenzweig, N. Anh Ky, E. Graziani, E. De La Cruz-Burelo, H. E. Cho, C. Schwanda, F. Krinner, E. Torassa, Pere Rados, M. V. Purohit, R. A. Briere, I. Nakamura, K. Chilikin, D. E. Jaffe, T. Humair, P. Ecker, M. Hohmann, E. Waheed, V. Aushev, Tomoyuki Konno, D. Dossett, C. Lyu, S.-J. Cho, A. De Yta-Hernandez, J. A. McKenna, Y. Kim, V. Babu, T. Ferber, S. Kurz, V. Popov, S. Dey, A. Hershenhorn, G. Rizzo, S. Lacaprara, N. Akopov, Soumen Paul, Felix Metzner, B. Scavino, H. Atmacan, G. B. Mohanty, Alberto Aloisio, Y. Yusa, Yuki Sato, M. Laurenza, V. Savinov, S. Bacher, K. Dort, H. Park, A. Bozek, K. Gudkova, Alessandro Gaz, S. H. Robertson, X. L. Wang, V. Chekelian, S. Hazra, R. Van Tonder, and H. Bae

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, law, 0103 physical sciences, General Physics and Astronomy, Resonance, 010306 general physics, Collider, 01 natural sciences, law.invention, Luminosity
Abstract

We report a measurement of the D^{0} and D^{+} lifetimes using D^{0}→K^{-}π^{+} and D^{+}→K^{-}π^{+}π^{+} decays reconstructed in e^{+}e^{-}→cc[over ¯] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The data, collected at center-of-mass energies at or near the ϒ(4S) resonance, correspond to an integrated luminosity of 72 fb^{-1}. The results, τ(D^{0})=410.5±1.1(stat)±0.8(syst) fs and τ(D^{+})=1030.4±4.7(stat)±3.1(syst) fs, are the most precise to date and are consistent with previous determinations.

Published
2021

2. Search for B+→K+νν¯ Decays Using an Inclusive Tagging Method at Belle II

Author

T. Pang, S. Patra, A. Pathak, K. Adamczyk, G.V. Russo, J. Libby, D. M. Asner, T. Matsuda, Enrico Bernieri, K. Hayasaka, T. V. Dong, Tomoyuki Konno, E. Kovalenko, L. Zani, S. Fiore, F. R. Le Diberder, C. Lyu, A. Vinokurova, S. Dubey, I. Heredia-De La Cruz, P. Grace, J. Baudot, C. H. Li, I. M. Peruzzi, S.-J. Cho, Y. Seino, A. De Yta-Hernandez, O. Hartbrich, Y. Ushiroda, C. Niebuhr, X. Y. Zhou, B. Wach, H. Windel, E. Graziani, E. De La Cruz-Burelo, M. T. Prim, D. Liventsev, P. Krokovny, Rakesh Kumar, C. La Licata, B.A. Shwartz, Takeo Kawasaki, F. Bianchi, H. M. Wakeling, L. E. Piilonen, I. Domínguez Jiménez, Hitoshi Hirata, K. H. Kang, K. Cho, P. Oskin, Agnese Martini, S. Sandilya, A. Kuzmin, M. Welsch, R. Mizuk, E. Ganiev, P. Taras, D. Biswas, A. B. Kaliyar, T. Iijima, C. W. Joo, A. Sangal, T. M. G. Kraetzschmar, S. Stefkova, M. Starič, M. Z. Wang, Andrey Sokolov, Nils Braun, K. Matsuoka, T. Kuhr, Y.-T. Lai, S. Ogawa, D. Cinabro, R. Giordano, A. Baur, H. Ye, J. Schueler, M. E. Sevior, Claudia Cecchi, A. Panta, M. Merola, W. Gradl, P. L. M. Podesta-Lerma, Antonio Budano, K. Chilikin, N. Akopov, G. Inguglia, G. Nazaryan, T. Kunigo, C. Ketter, P. Goldenzweig, A. Gaz, A. Korobov, P. Chang, M. Kumar, M. De Nuccio, K. Nishimura, Frank Simon, R. M. Seddon, D. E. Jaffe, Abner Soffer, N. Anh Ky, H. Ozaki, V. Babu, K. Senyo, S. H. Robertson, S. Nishida, C. H. Chen, S. E. Vahsen, A. J. Schwartz, Kazuhiko Hara, A. Frey, D. Epifanov, Marco Milesi, M. Hernandez Villanueva, G. Finocchiaro, Dipak Kumar Sahoo, P. Bambade, K. Tanida, Y. M. Yook, J. Serrano, T. Ferber, S. Cunliffe, X. L. Wang, Yizeng Li, A. Di Canto, S. Bussino, Sunil Bansal, J. Bennett, Andreas Warburton, Y. Iwasaki, F. Abudinén, Y. J. Kwon, Somnath Choudhury, Tagir Aushev, S. Kurz, Semen Eidelman, S. Pardi, S. Spataro, T. Humair, K. Nakamura, V. Zhukova, Y. Onuki, Makoto Tabata, V. Chekelian, D. Rodríguez Pérez, G. De Nardo, S. Y. Suzuki, S. Hazra, T. K. Pedlar, N. Taniguchi, M. Takizawa, J. G. Shiu, R. Mussa, Jakub Kandra, M. Campajola, N. Rout, X. P. Xu, B. Paschen, Paul Jackson, Y.-T. Chen, Soumen Paul, M. Uchida, Felix Metzner, A. Gellrich, S. Raiz, H. Svidras, A. Garmash, C. Hadjivasiliou, Daniel Greenwald, John Yelton, L. K. Li, R. Van Tonder, M. Hohmann, A. Lozar, Z. Doležal, A. Natochii, A. Ishikawa, K. Inami, N. Toutounji, N. Rad, R. Pestotnik, E. Paoloni, M. Nakao, Stefano Longo, F. Tenchini, I. Ripp-Baudot, F. Meier, P. Križan, M. Remnev, H. Miyake, C.-L. Hsu, L. Cao, B. Scavino, D. A. Sanders, D. Matvienko, J. Wiechczynski, Seongbae Yang, H. Tanigawa, T. Podobnik, B. Spruck, K. Dort, B. Golob, Melissa K. Takahashi, S. Prell, S. Bettarini, Bruce Yabsley, Shih-Chang Lee, S. Duell, C. Miller, C. Hearty, E. Prencipe, Q. Y. Liu, P. Ahlburg, Martin Ritter, Dmytro Levit, M. Maggiora, Phillip Urquijo, N. K. Nisar, K. Lieret, K. Trabelsi, C. H. Kim, Z. Liptak, E. C. Hill, H. Park, S. X. Li, A. Bozek, W. A. T. Wan Abdullah, H. G. Moser, H. Atmacan, D. J. Summers, J. S. Lange, K. Uno, T. Koga, A. Selce, A. Passeri, M. Piccolo, Peter Kodys, R. Karl, T. D. Kimmel, E. Waheed, V.N. Zhilich, V. Aushev, Carlos Marinas, W. W. Jacobs, M. Bertemes, D. Ferlewicz, H. Hayashii, W. Sutcliffe, Elisa Manoni, R. J. Sobie, John Webb, L. Vitale, K. Chirapatpimol, M. Eliachevitch, J. Kumar, S.-H. Park, Yuki Sato, V. Popov, C. Z. Yuan, L. Santelj, S. Dey, K. Miyabayashi, Y. Guan, A. Paladino, R. Manfredi, E. Solovieva, T. Lueck, A. Sibidanov, A. Glazov, M. Laurenza, L. B. Rizzuto, G. de Marino, G. S. Varner, A. Hershenhorn, J. H. Yin, R. Cheaib, P. Branchini, G. Karyan, K. Kumara, Florian Urs Bernlochner, K. Gudkova, S. Lacaprara, V. Savinov, C. Kiesling, R. de Sangro, Z. S. Stottler, G. B. Mohanty, Alberto Aloisio, F. Krinner, A. K. Giri, Y. Yusa, S. Marcello, S. Baehr, G. Rizzo, M. Bračko, M. Destefanis, R. Itoh, K. Yoshihara, Concettina Sfienti, M. Masuda, G. Dujany, M. Iwasaki, F. Dattola, Sw. Banerjee, Satoshi Tanaka, E. Torassa, B. G. Cheon, L. M. Cremaldi, C. Murphy, C. Wessel, N. Gabyshev, D. Červenkov, A. Rostomyan, S. Korpar, F. Forti, M. Mrvar, B. G. Fulsom, R. Godang, S. Watanuki, Prafulla Kumar Behera, K. Sumisawa, S. Kohani, L. Corona, J. Irakkathil Jabbar, M. Garcia-Hernandez, G. Pakhlova, A. Fodor, H. Kichimi, Kevin Varvell, E. Bertholet, Takeo Higuchi, H. Aihara, F. Müller, Y. Usov, K. Lautenbach, Pere Rados, G. De Pietro, J. M. Roney, V. Gaur, M. Sumihama, C. Praz, M. Nayak, Ya-Qiu Jin, D. Tonelli, M. Hoek, Yongsun Kim, B. Gobbo, S. Uno, C. Schwanda, H. Ono, P. Leitl, R. Stroili, Y. Unno, D. Y. Kim, Q. D. Zhou, Iki Adachi, G. Polat, T. Fillinger, S. Pokharel, F. Di Capua, Y. Onishchuk, P. Pakhlov, P. Lewis, G. Casarosa, T. Czank, Jürgen Becker, S. Yamada, Jochen Dingfelder, W. B. Yan, Z. Natkaniec, U. Tamponi, M. Bessner, Surajit Maity, L. Lanceri, H. Junkerkalefeld, S. Halder, T. Bilka, and T. E. Browder

Subjects
Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, Resonance, 01 natural sciences, law.invention, Pair production, law, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics, Collider, Energy (signal processing)
Abstract

A search for the flavor-changing neutral-current decay B^{+}→K^{+}νν[over ¯] is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb^{-1} collected at the ϒ(4S) resonance and a sample of 9 fb^{-1} collected at an energy 60 MeV below the resonance. Because the measurable decay signature involves only a single charged kaon, a novel measurement approach is used that exploits not only the properties of the B^{+}→K^{+}νν[over ¯] decay, but also the inclusive properties of the other B meson in the ϒ(4S)→BB[over ¯] event, to suppress the background from other B meson decays and light-quark pair production. This inclusive tagging approach offers a higher signal efficiency compared to previous searches. No significant signal is observed. An upper limit on the branching fraction of B^{+}→K^{+}νν[over ¯] of 4.1×10^{-5} is set at the 90% confidence level.

Published
2021

3. Measurements of the Branching Fractions of the Semileptonic Decays Ξc0→Ξ−ℓ+νℓ and the Asymmetry Parameter of Ξc0→Ξ−π+

Author

S. Jia, U. Tamponi, Dipak Kumar Sahoo, S. Pardi, A. Garmash, M. Bessner, G. Bonvicini, A. Natochii, N. K. Nisar, A. Vinokurova, M. Iwasaki, O. Hartbrich, B. Bhuyan, J. S. Lange, K. Uno, Andrey Sokolov, P. Krokovny, O. Grzymkowska, C. H. Wang, K.-H. Kim, L. E. Piilonen, Rakesh Kumar, J. Bennett, Jyoti Prakash Biswal, B. G. Cheon, D. Liventsev, K. H. Kang, K. Cho, S. Paul, S. Al Said, D. Cinabro, M. Z. Wang, K. Kinoshita, Yizeng Li, Semen Eidelman, Y. Jin, R. Kroeger, I. S. Lee, V. Savinov, M. Uchida, R. Mussa, T. Pang, A. Ishikawa, S. Patra, M. Kumar, P. Križan, P. Goldenzweig, H. Ye, R. Mizuk, S. Nishida, H. Ono, V. Bhardwaj, K. Adamczyk, S. Korpar, D. Epifanov, G.V. Russo, S. Das, Y. Iwasaki, A. Kuzmin, L. Nayak, V. Babu, G. Schnell, Y. J. Kwon, X. P. Xu, X. L. Wang, Prafulla Kumar Behera, S. Ogawa, G. S. Varner, J. T. McNeil, L. Li Gioi, A. Korobov, C. W. Joo, E. Prencipe, Somnath Choudhury, R. Van Tonder, N. Rout, M. Sumihama, P. L. Wang, T. Ferber, T. K. Pedlar, T. Kuhr, S. Cunliffe, H. Hayashii, R. Ayad, K. Kumara, M. Niiyama, R. Itoh, R. Dhamija, A. Rostomyan, J. G. Shiu, J. Libby, D. M. Asner, L. K. Li, M. C. Chang, K. Hayasaka, A. K. Giri, T. Mori, H. Aihara, B. G. Fulsom, K. Tanida, D. Y. Kim, Y. Usov, Seongbae Yang, T. Bilka, Tagir Aushev, Z. S. Stottler, E. Kovalenko, V. Zhukova, Y. Onuki, K. Lalwani, C. H. Li, S. Uno, A. Vossen, M. Masuda, Iki Adachi, M. Watanabe, T. E. Browder, H. Park, A. Bozek, Tomoyuki Konno, K. Nishimura, Y. Seino, C. Schwanda, M. Hernandez Villanueva, M. Campajola, E. Won, S. Watanuki, T. Uglov, M. T. Prim, Z. P. Zhang, T. V. Dong, Y. Sakai, V.N. Zhilich, Y. Kato, S. Sandilya, K. Lieret, F. Tenchini, V. Gaur, S.-J. Cho, T. Podobnik, G. Pakhlova, C.-L. Hsu, M. Starič, N. Dash, E. Solovieva, C. Sharma, M. Nayak, K. Senyo, Peter Kodys, W. W. Jacobs, T. Sanuki, C. P. Shen, Seok Kim, Shih-Chang Lee, D. Matvienko, F. Di Capua, C. H. Kim, G. Karyan, H. Kichimi, P. Pakhlov, N. Gabyshev, D. Červenkov, Rocky Bala Garg, W. B. Yan, Sadaharu Uehara, C. Hadjivasiliou, J. H. Yin, M. Bračko, A. Chen, G. De Nardo, G. B. Mohanty, M. Shapkin, M. Röhrken, K. Chilikin, C. Z. Yuan, Y. Choi, V. Popov, L. Santelj, R. Pestotnik, S. K. Choi, K. Gudkova, Felix Metzner, K. K. Joo, and T. J. Moon

Subjects
Physics, 010308 nuclear & particles physics, Branching fraction, media_common.quotation_subject, Zero (complex analysis), General Physics and Astronomy, Branching (polymer chemistry), 01 natural sciences, Asymmetry, Crystallography, KEKB, 0103 physical sciences, 010306 general physics, media_common, Lepton
Abstract

Using data samples of 89.5 and 711fb$^{-1}$ recorded at energies of $\sqrt{s}$=10.52 and 10.58 GeV, respectively, with the Belle detector at the KEKB e$^{+}$e$^{-}$ collider, we report measurements of branching fractions of semileptonic decays Ξ$_{c}$$^{0}$ → Ξ$^{-}$l$^{+}$ν$_{l}$(l=e or μ) and the CP-asymmetry parameter of Ξ$_{c}$$^{0}$ → Ξ$^{-}$π$^{+}$ decay. The branching fractions are measured to be B(Ξ$_{c}$$^{0}$ → Ξ$^{-}$e$^{+}$ν$_{e}$)= 1.31±0.04±0.07±0.38)% and B(Ξ$_{c}$$^{0}$ → Ξ$^{-}$μ$^{+}$ν$_{μ}$ = (1.27±0.06±0.10±0.37)% , and the decay parameter α$_{Ξπ}$ is measured to be 0.63±0.03±0.01 with much improved precision compared with the current world average. The corresponding ratio B(Ξ$_{c}$$^{0}$ → Ξ$^{-}$e$^{+}$ν$_{e}$) /B(Ξ$_{c}$$^{0}$ → Ξ$^{-}$μ$^{+}$ν$_{μ}$) is 1.03±0.05±0.07, which is consistent with the expectation of lepton flavor universality. The first measured asymmetry parameter A$_{CP}$=(α$_{Ξ^{-}π^{+}}$+α$_{Ξ^{+}π^{-}}$)/(α$_{Ξ^{-}π^{+}}$+α$_{Ξ^{+}π^{-}}$) = 0.024±0.052±0.014 is found to be consistent with zero. The first and the second uncertainties above are statistical and systematic, respectively, while the third ones arise due to the uncertainty of the Ξ$_{c}$$^{0}$ → Ξ$^{-}$π$^{+}$ branching fraction.

Published
2021

4. Test of Lepton-Flavor Universality in B→K*ℓ+ℓ− Decays at Belle

Author

H. Ono, G. Schnell, T. Iijima, H. Miyata, J. Biswal, Y. Sakai, A. K. Giri, BG Cheon, Massimo Berger, V.N. Zhilich, C. Z. Yuan, M. Masuda, A. Kuzmin, W. Sutcliffe, V. Babu, Y. Guan, Z Liptak, K. Kumara, Y. Unno, P Behera, S. Jia, T. Ferber, J-G Shiu, T. Matsuda, G. De Nardo, M. T. Hedges, M. C. Chang, S Ogawa, P. K. Resmi, S. Uno, C.-L. Hsu, S Choudhury, D. M. Asner, K. Hayasaka, V. Savinov, Daniel Greenwald, A. Garmash, Iki Adachi, G. Pakhlova, M. Z. Wang, N. K. Nisar, K. Trabelsi, S. Dubey, W. W. Jacobs, J. Libby, J. S. Lange, O. Hartbrich, T. Kuhr, DY Kim, K. Adamczyk, H. Kichimi, Tao Luo, K. Tanida, Y. Seino, Rakesh Kumar, M Merola, A. J. Schwartz, X. P. Xu, M. Uchida, V. Bhardwaj, Y Choi, G. Karyan, M. Niiyama, H Ye, J. F. Strube, S. H. Kim, D. Epifanov, Pavel Krokovny, X. L. Wang, H Aihara, GB Mohanty, S. Wehle, M. Campajola, R. Itoh, R. Van Tonder, H. Hayashii, A. Sangal, Jihwa Lee, Y. I. Kim, Leo Piilonen, L. Cao, C. Schwanda, A. B. Kaliyar, Takeo Higuchi, J. Kahn, T. K. Pedlar, R. Ayad, A. Rostomyan, Dipak Kumar Sahoo, S. Cunliffe, D Cinabro, R. Kulasiri, S. Nishida, J. MacNaughton, J. T. McNeil, B. G. Fulsom, K. Cho, Samo Korpar, J. Schueler, V. Gaur, E. Won, Seongbae Yang, U. Tamponi, G. Russo, H. Park, K. Senyo, A. Bozek, Kevin Varvell, Y. Ushiroda, Kohei Ogawa, W-S Hou, G. Varner, A. Natochii, F. Tenchini, K Kinoshita, K. Inami, B.A. Shwartz, S. E. Vahsen, TE Browder, T. Podobnik, T. Sumiyoshi, G. Inguglia, E. Prencipe, T. Uglov, Y. Tao, Martin Ritter, N. Dash, E. Solovieva, Y. Iwasaki, F. Di Capua, Y-J Kwon, Vladimir Zhulanov, Y. Jin, M Iwasaki, O. Schneider, N. Rout, S. C. Lee, D. Kotchetkov, M. E. Sevior, P. Goldenzweig, Zhiqing Zhang, Chunjie Wang, P. Wang, J. Haba, C. Niebuhr, Tagir Aushev, V. Zhukova, Y. Onuki, S. Sandilya, P. Pakhlov, M. Starič, Semen Eidelman, R. Mussa, V.M. Aulchenko, A. Ishikawa, M. Nakao, I. Komarov, R. Kroeger, D. Liventsev, R. Mizuk, K. Chilikin, J. H. Yin, M. Bračko, N. Gabyshev, Rocky Bala Garg, S-H Park, M. Takizawa, K. T. Kim, M. Nayak, T. J. Moon, Felix Metzner, H. Atmacan, D. Joffe, V. Vorobyev, Yang Li, V. Popov, L. Santelj, A. Chen, M. Shapkin, R. Pestotnik, and M. T. Prim

Subjects
Research program, Higher education, business.industry, media_common.quotation_subject, General Physics and Astronomy, Library science, 7. Clean energy, 01 natural sciences, Chinese academy of sciences, Excellence, 0103 physical sciences, Natural science, Christian ministry, 010306 general physics, business, China, Research center, media_common
Abstract

We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council including Grants No. DP180102629, No. DP170102389, No. DP170102204, No. DP150103061, No. FT130100303; Austrian Science Fund (FWF); the National Natural Science Foundation of China under Contracts No. 11435013, No. 11475187, No. 11521505, No. 11575017, No. 11675166, No. 11705209; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS), Grant No. QYZDJ-SSWSLH011; the CAS Center for Excellence in Particle Physics (CCEPP); the Shanghai Pujiang Program under Grant No. 18PJ1401000; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; National Research Foundation (NRF) of Korea Grants No. 2016R1D1A1B01010135, No. 2016R1D1A1B02012900, No. 2018R1A2B3003643, No. 2018R1A6A1A06024970, No. 2018R1D1A1B07047294, No. 2019K1A3A7A09033840, No. 2019R1I1A3A01058933; Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project, the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information, and KREONET/GLORIAD the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Science and Higher Education of the Russian Federation, Agreement No. 14.W03.31.0026; University of Tabuk research Grants No. S-1440-0321, No. S-0256-1438, and No. S-0280-1439 (Saudi Arabia); the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science, Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation.

Published
2021

5. Evidence for X(3872)→J/ψπ+π− Produced in Single-Tag Two-Photon Interactions

Author

R. Mussa, G.V. Russo, A. Ishikawa, W. S. Hou, Y. Seino, S. Jia, G. Inguglia, T. Matsuda, M. Nakao, C. MacQueen, B. Bhuyan, P. Chang, P. Križan, Somnath Choudhury, G. Bonvicini, Iki Adachi, A. Vinokurova, J. G. Shiu, V. Savinov, M. Campajola, S. Pardi, Doo Young Kim, H. Aihara, A. B. Kaliyar, O. Hartbrich, J. Kahn, C.-L. Hsu, J. Schueler, Y. Teramoto, Bruce Yabsley, D. Liventsev, B. H. Kim, J. Libby, D. M. Asner, K. Hayasaka, Rakesh Kumar, Peter Kodys, M. T. Prim, Takeo Kawasaki, V. Gaur, W. W. Jacobs, K. H. Kang, V.N. Zhilich, Y. Kato, W. Sutcliffe, A. Sangal, X. L. Wang, T. Uglov, V. Chekelian, G. B. Mohanty, S. Sandilya, T. Mori, G. Karyan, S. Cunliffe, K. Miyabayashi, G. Varner, M. Shapkin, Y. Usov, R. Van Tonder, M. C. Chang, A. K. Giri, M. Takizawa, R. Ayad, K. Cho, Jyoti Prakash Biswal, G. De Nardo, M. T. Hedges, T. K. Pedlar, N. K. Nisar, M. Iwasaki, Pavel Krokovny, K. Senyo, A. Garmash, M. Masuda, G. Schnell, T. Iijima, J. S. Lange, M. Starič, T. Bilka, Semen Eidelman, E. Nakano, Vladimir Zhulanov, R. Kroeger, M. Watanabe, B. G. Cheon, T. E. Browder, T. V. Dong, E. Won, R. Pestotnik, M. E. Sevior, I. S. Lee, T. D. Kimmel, A. Kuzmin, E.-J. Jang, P. Goldenzweig, S. Ogawa, E. Prencipe, L. K. Li, C. W. Joo, U. Tamponi, Shih-Chang Lee, T. Kuhr, Tao Luo, S.-J. Cho, K. Chilikin, K. Sumisawa, Daniel Greenwald, F. Tenchini, Y. Iwasaki, Y. J. Kwon, J. H. Yin, C. Kiesling, Seongbae Yang, H. Ono, C. Beleño, E. Waheed, N. Rout, V. Vorobyev, H. Miyata, T. J. Moon, Prafulla Kumar Behera, H. Hayashii, B. G. Fulsom, E. Wang, T. Podobnik, T. Sumiyoshi, H. Park, A. Bozek, D. Matvienko, M. Hernandez Villanueva, M. Merola, Y. Jin, C. H. Wang, S. Paul, H. Kichimi, S. Al Said, Martin Ritter, Tagir Aushev, V. Zhukova, Y. Onuki, Y. Unno, J. Bennett, Z. P. Zhang, H. Ye, M. Bračko, M. Z. Wang, K. Kinoshita, M. Nayak, T. Sanuki, S. Korpar, Saraju P. Mohanty, Seok Kim, D. Kotchetkov, T. Hara, M. Mrvar, Yongsun Kim, H. Atmacan, K. K. Joo, A. Chen, V. Babu, K. Lalwani, Dipak Kumar Sahoo, S. Uno, C. Schwanda, D. Cinabro, H. Nakazawa, Rocky Bala Garg, T. Ferber, Sadaharu Uehara, R. Kulasiri, Phillip Urquijo, Kohei Ogawa, A. Natochii, M. Sumihama, K. Inami, Y. B. Li, Y. Choi, V. Popov, L. Santelj, C. Hadjivasiliou, Y. Sakai, N. Gabyshev, D. Červenkov, G. Pakhlova, L. Li Gioi, P. L. Wang, K. Kumara, M. Uchida, Z. S. Stottler, V. Bhardwaj, Z. Liptak, R. Itoh, A. Rostomyan, Seokhee Park, F. Di Capua, P. Pakhlov, S. Nishida, Z. Natkaniec, P. Lewis, Leo Piilonen, X. P. Xu, K. Lieret, E. Solovieva, John Yelton, Z. Doležal, J. B. Singh, S. K. Choi, V. Shebalin, and S. Patra

Subjects
Physics, Particle physics, Meson, General Physics and Astronomy, Virtual particle, Electron, State (functional analysis), 01 natural sciences, law.invention, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics, Collider, X(3872)
Abstract

We report the first evidence for $X(3872)$ production in two-photon interactions by tagging either the electron or the position in the final state, exploring the highly virtual photon region. The search is performed in $e^+e^- \rightarrow e^+e^-J/\psi\pi^+\pi^-$, using 825 fb$^{-1}$ of data collected by the Belle detector operated at the KEKB $e^+e^-$ collider. We observe three $X(3872)$ candidates with an expected background of $0.11\pm 0.10$ events, with a significance of 3.2$\sigma$. We obtain an estimated value for $\tilde{\Gamma}_{\gamma\gamma}{\cal B}(X(3872)\rightarrow J/\psi\pi^+\pi^-$) assuming the $Q^2$ dependence predicted by a $c\bar{c}$ meson model, where $-Q^2$ is the invariant mass-squared of the virtual photon. No $X(3915)\rightarrow J/\psi\pi^+\pi^-$ candidates are found.

Published
2021

6. Measurements of the Branching Fractions of the Semileptonic Decays Ξ_{c}^{0}→Ξ^{-}ℓ^{+}ν_{ℓ} and the Asymmetry Parameter of Ξ_{c}^{0}→Ξ^{-}π^{+}

Author

Y B, Li, C P, Shen, I, Adachi, K, Adamczyk, H, Aihara, S, Al Said, D M, Asner, T, Aushev, R, Ayad, V, Babu, P, Behera, J, Bennett, M, Bessner, V, Bhardwaj, B, Bhuyan, T, Bilka, J, Biswal, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, M, Campajola, D, Červenkov, M-C, Chang, A, Chen, B G, Cheon, K, Chilikin, K, Cho, S-J, Cho, S-K, Choi, Y, Choi, S, Choudhury, D, Cinabro, S, Cunliffe, S, Das, N, Dash, G, De Nardo, R, Dhamija, F, Di Capua, T V, Dong, S, Eidelman, D, Epifanov, T, Ferber, B G, Fulsom, R, Garg, V, Gaur, N, Gabyshev, A, Garmash, A, Giri, P, Goldenzweig, O, Grzymkowska, K, Gudkova, C, Hadjivasiliou, O, Hartbrich, K, Hayasaka, H, Hayashii, M, Hernandez Villanueva, C-L, Hsu, A, Ishikawa, R, Itoh, M, Iwasaki, Y, Iwasaki, W W, Jacobs, S, Jia, Y, Jin, C W, Joo, K K, Joo, K H, Kang, G, Karyan, Y, Kato, H, Kichimi, C H, Kim, D Y, Kim, K-H, Kim, S H, Kim, K, Kinoshita, P, Kodyš, T, Konno, A, Korobov, S, Korpar, E, Kovalenko, P, Križan, R, Kroeger, P, Krokovny, T, Kuhr, M, Kumar, R, Kumar, K, Kumara, A, Kuzmin, Y-J, Kwon, K, Lalwani, J S, Lange, I S, Lee, S C, Lee, C H, Li, L K, Li, L, Li Gioi, J, Libby, K, Lieret, D, Liventsev, M, Masuda, D, Matvienko, J T, McNeil, F, Metzner, R, Mizuk, G B, Mohanty, T J, Moon, T, Mori, R, Mussa, A, Natochii, L, Nayak, M, Nayak, M, Niiyama, N K, Nisar, S, Nishida, K, Nishimura, S, Ogawa, H, Ono, Y, Onuki, P, Pakhlov, G, Pakhlova, T, Pang, S, Pardi, H, Park, S, Patra, S, Paul, T K, Pedlar, R, Pestotnik, L E, Piilonen, T, Podobnik, V, Popov, E, Prencipe, M T, Prim, M, Röhrken, A, Rostomyan, N, Rout, G, Russo, D, Sahoo, Y, Sakai, S, Sandilya, L, Santelj, T, Sanuki, V, Savinov, G, Schnell, C, Schwanda, Y, Seino, K, Senyo, M, Shapkin, C, Sharma, J-G, Shiu, A, Sokolov, E, Solovieva, M, Starič, Z S, Stottler, M, Sumihama, U, Tamponi, K, Tanida, F, Tenchini, M, Uchida, S, Uehara, T, Uglov, K, Uno, S, Uno, Y, Usov, R, Van Tonder, G, Varner, A, Vinokurova, A, Vossen, C H, Wang, M-Z, Wang, P, Wang, X L, Wang, M, Watanabe, S, Watanuki, E, Won, X, Xu, W, Yan, S B, Yang, H, Ye, J H, Yin, C Z, Yuan, Z P, Zhang, V, Zhilich, and V, Zhukova

Abstract

Using data samples of 89.5 and 711 fb^{-1} recorded at energies of sqrt[s]=10.52 and 10.58 GeV, respectively, with the Belle detector at the KEKB e^{+}e^{-} collider, we report measurements of branching fractions of semileptonic decays Ξ_{c}^{0}→Ξ^{-}ℓ^{+}ν_{ℓ} (ℓ=e or μ) and the CP-asymmetry parameter of Ξ_{c}^{0}→Ξ^{-}π^{+} decay. The branching fractions are measured to be B(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})=(1.31±0.04±0.07±0.38)% and B(Ξ_{c}^{0}→Ξ^{-}μ^{+}ν_{μ})=(1.27±0.06±0.10±0.37)%, and the decay parameter α_{Ξπ} is measured to be 0.63±0.03±0.01 with much improved precision compared with the current world average. The corresponding ratio B(Ξ_{c}^{0}→Ξ^{-}e^{+}ν_{e})/B(Ξ_{c}^{0}→Ξ^{-}μ^{+}ν_{μ}) is 1.03±0.05±0.07, which is consistent with the expectation of lepton flavor universality. The first measured asymmetry parameter A_{CP}=(α_{Ξ^{-}π^{+}}+α_{Ξ[over ¯]^{+}π^{-}})/(α_{Ξ^{-}π^{+}}-α_{Ξ[over ¯]^{+}π^{-}})=0.024±0.052±0.014 is found to be consistent with zero. The first and the second uncertainties above are statistical and systematic, respectively, while the third ones arise due to the uncertainty of the Ξ_{c}^{0}→Ξ^{-}π^{+} branching fraction.

Published
2021

7. Search for Axionlike Particles Produced in e+e− Collisions at Belle II

Author

C. Rosenfeld, R. M. Seddon, S. H. Robertson, H. Ye, S. Kohani, Martin Florian Bessner, Shuji Tanaka, R. Mussa, H. M. Wakeling, J. Serrano, R. Rasheed, H. Svidras, A. Ishikawa, M. Nakao, R. Mizuk, J. Bennett, Kevin Varvell, F. Meggendorfer, M. Reif, L. Zani, D. M. Asner, K. Hayasaka, X. L. Wang, K. Kumara, Z. S. Stottler, V. Chekelian, D. Rodríguez Pérez, K. Chilikin, Richard Peschke, A. Pathak, S. E. Vahsen, D. Tonelli, C. H. Li, E. De La Cruz-Burelo, P. Križan, Ashlie Martini, I. M. Peruzzi, M. De Nuccio, R. Van Tonder, C. H. Kim, H. Aihara, D. Greenwald, F. Müller, C. MacQueen, M. Takizawa, Claudia Cecchi, G. De Nardo, M. T. Hedges, P. Pakhlov, D. Matvienko, B. Spruck, Seokhee Park, Samo Korpar, S. Nishida, A. Sibidanov, Yukinori Sato, Carlos Marinas, M. Hoek, E. J. Jang, F. Bianchi, L. Santelj, Tao Luo, K. Dort, Hitoshi Hirata, Yoshinobu Unno, F. Tenchini, N. Akopov, J. G. Shiu, S. H. Kim, Yongsun Kim, K. Tanida, A. Gaz, J. Baudot, Z. Doležal, A. J. Schwartz, T. Sumiyoshi, C. Kleinwort, C. Wessel, V. Babu, H. Park, H. Nakazawa, B. Gobbo, H. Ono, Florian Urs Bernlochner, C. Schwanda, L. J. Wu, C. Kiesling, Martin Ritter, Dmytro Levit, Elisa Manoni, S. Jia, D. E. Jaffe, A. K. Giri, Abner Soffer, S. Marcello, Soumen Paul, Makoto Tabata, Jakub Kandra, Phillip Urquijo, M. Uchida, K. Chirapatpimol, S. Reiter, S. Watanuki, W. B. Yan, G. De Pietro, E. C. Hill, Semen Eidelman, Felix Metzner, K. Lieret, H. Windel, N. Rout, M. Masuda, B. Scavino, V. Gaur, G. Rizzo, P. Oskin, V. Bhardwaj, M. Bračko, M. Destefanis, L. Li Gioi, Michael Ritzert, T. E. Browder, Marco Milesi, M. Piccolo, E. Ganiev, T. Ferber, A. Garmash, L. Corona, S. J. Cho, M. Campajola, Tagir Aushev, S. Kurz, S. Wehle, U. Gebauer, S. Halder, Y. Ushiroda, Rocky Bala Garg, C. W. Joo, A. Gellrich, S. Bussino, C. Z. Yuan, P. Leitl, F. Dattola, T. V. Dong, D. Liventsev, H. Hayashii, V. Savinov, Y. Maeda, H. Kichimi, M. Welsch, Concettina Sfienti, T. M. G. Kraetzschmar, E. Prencipe, M. Yonenaga, T. Bilka, G. Varner, W. Gradl, Ya-Qiu Jin, R. de Sangro, C. Niebuhr, R. Stroili, T. K. Pedlar, Y. Seino, S. Ogawa, B. G. Cheon, Z. J. Liptak, N. Rad, M. Watanabe, E. Torassa, H. Ozaki, Paul Jackson, Yang Li, M. Wakai, C. Hadjivasiliou, L. M. Cremaldi, L. K. Li, Q. D. Zhou, A. Sangal, A. Rostomyan, J. Wiechczynski, I. Ripp-Baudot, V. Popov, E. Waheed, M. V. Purohit, N. Dash, E. Solovieva, M. Hohmann, A. Selce, T. Kuhr, S. Sandilya, U. Tamponi, E. Paoloni, S. Cunliffe, C.-L. Hsu, Seongbae Yang, C. La Licata, R. Itoh, B. G. Fulsom, A. Hershenhorn, K. Cho, Seema Bahinipati, A. Fodor, S. Bilokin, M. C. Chang, Antonio Budano, D. A. Sanders, G. Dujany, S. Patra, Q. Y. Liu, C. Miller, Y. Sakai, H. G. Moser, M. Z. Wang, K. Kinoshita, A. Panta, Nils Braun, Y-J Kwon, M. Merola, T. Geßler, Pavel Krokovny, D. Dossett, O. Hartbrich, S. Lacaprara, Leo Piilonen, K. Trabelsi, A. Paladino, M. Starič, S. K. Choi, Enrico Bernieri, P. Lewis, S. C. Lee, P. Taras, S. Uno, A. Passeri, I. Komarov, Peter Kodys, W. W. Jacobs, H. Tanigawa, S. Pardi, T. Koga, Kodai Matsuoka, Sw. Banerjee, F. Forti, G. B. Mohanty, Alberto Aloisio, Y. Yusa, A. De Yta-Hernandez, M. Hernandez Villanueva, Y. Kato, D. Ferlewicz, Doo Young Kim, I. Adachi, G. Polat, G. Casarosa, M. Mrvar, M. Bertemes, T. Uglov, M. E. Sevior, I. S. Lee, P. Goldenzweig, S. Fiore, Victoria Zhukova, M. H. A. Nouxman, L. Lanceri, W. Sutcliffe, R. Cheaib, Frank Simon, Yi Fan Hu, A. Vinokurova, R. Manfredi, I. Heredia-De La Cruz, G. Inguglia, N. Anh Ky, P. Branchini, C. H. Wang, E. Graziani, C. Hearty, G. Karyan, P. Gomis, J. F. Strube, D. Červenkov, Sunil Bansal, K. Senyo, D. Biswas, Rakesh Kumar, K. Miyabayashi, D. J. Summers, A. B. Kaliyar, S. Spataro, R. J. Sobie, John Webb, X. P. Xu, L. Vitale, E. Won, Takuya Higuchi, V. Aushev, M. T. Prim, S. Baehr, H. J. Kim, Stefano Longo, Dipak Kumar Sahoo, P. Bambade, Andreas Warburton, F. Meier, Bruce Yabsley, M. Remnev, K. Azmi, F. Abudinén, B. Golob, N. K. Nisar, J. S. Lange, T. D. Kimmel, S. Stefkova, D. Cinabro, R. Giordano, Jürgen Becker, P. Chang, M. Kumar, B. Paschen, Kohei Ogawa, F. Di Capua, A. Natochii, K. Inami, K. Unger, S. Bettarini, J. Libby, I. Nakamura, J. M. Roney, F. Ameli, M. Sumihama, C. Praz, R. Godang, Prafulla Kumar Behera, J. Irakkathil Jabbar, H. E. Cho, and Pere Rados

Subjects
Physics, Range (particle radiation), Particle physics, Gauge boson, Luminosity (scattering theory), Photon, 010308 nuclear & particles physics, General Physics and Astronomy, 01 natural sciences, law.invention, Standard Model, Pseudoscalar, Direct production, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider
Abstract

We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e+e-→γa, a→γγ in the mass range 0.2

Published
2020

8. Measurement of R(D) and R(D*) with a Semileptonic Tagging Method

Author

A. K. Giri, M. Masuda, S. E. Vahsen, T. V. Dong, K. Chilikin, Tagir Aushev, P. K. Resmi, C.-L. Hsu, C. Beleño, V. Zhukova, K. Trabelsi, Peter Kodys, W. W. Jacobs, S. Di Carlo, G. Karyan, Y. Onuki, A. M. Bakich, N. Dash, Y. Iwasaki, Y. J. Kwon, M. Iwasaki, T. J. Moon, K. Nakamura, Soumen Paul, H. Ono, B. G. Cheon, R. Mussa, Felix Metzner, O. Schneider, H. B. Jeon, F. Di Capua, G. Schnell, M. Rozanska, N. Gabyshev, D. Červenkov, B. G. Fulsom, Jyoti Prakash Biswal, A. Ishikawa, J. Schueler, A. Rabusov, M. Z. Wang, K. Kinoshita, P. Pakhlov, B. Bhuyan, K. K. Joo, Y. Seino, M. Nakao, Toru Iijima, J. Bennett, S. Sandilya, Seokhee Park, J. F. Krohn, E. Won, R. Pestotnik, S. Nishida, Iki Adachi, J. K. Lee, S. Korpar, Y. Choi, K. J. Nath, T. Kuhr, S. C. Lee, D. Kotchetkov, T. Matsuda, Doo Young Kim, G. De Nardo, M. Bračko, V. Babu, T. Sumiyoshi, T. K. Pedlar, Y. Sakai, Rocky Bala Garg, M. Nayak, Martin Ritter, M. Uchida, P. L. Wang, H. Atmacan, Y. Guan, R. Cheaib, L. K. Li, Leo Piilonen, A. Vossen, T. Ferber, V. Savinov, B.A. Shwartz, W. Sutcliffe, H. J. Kim, K. Cho, A. Chen, Phillip Urquijo, Seema Bahinipati, T. Sanuki, A. Garmash, H. Aihara, Hitoshi Yamamoto, Z. S. Stottler, K. Nishimura, Z. Doležal, Y. B. Li, T. Pang, G. B. Mohanty, M. Starič, Frank Simon, D. Liventsev, C. H. Kim, Vladimir Popov, Vladimir Zhulanov, P. Križan, R. Itoh, R. Kroeger, M. E. Sevior, I. S. Lee, V. Shebalin, S. Patra, G.V. Russo, Kevin Varvell, F. Tenchini, D. Joffe, M. Takizawa, P. Goldenzweig, E. Waheed, C. Z. Yuan, Tao Luo, K. Tanida, M. T. Prim, J. G. Shiu, K. T. Kim, W. S. Hou, K. Lieret, P. Oskin, O. Hartbrich, M. Merola, Pavel Krokovny, T. Uglov, D. Matvienko, J. Wiechczynski, T. Mori, D. Greenwald, S. H. Kim, Y. Usov, H. Hayashii, G. Pakhlova, N. K. Nisar, Rakesh Kumar, H. Park, A. Bozek, Dipak Kumar Sahoo, Luka Santelj, K. Senyo, K. H. Kang, J. H. Yin, L. Li Gioi, Z. P. Zhang, Kohei Ogawa, X. L. Wang, E. Solovieva, V. Chekelian, R. Van Tonder, A. B. Kaliyar, K. Inami, D. Epifanov, J. S. Lange, S. Cunliffe, B. Pal, Seongbae Yang, C. MacQueen, H. Ye, A. J. Schwartz, H. Kichimi, Takeo Higuchi, M. Campajola, V.N. Zhilich, D. Ferlewicz, V. Gaur, K. Miyabayashi, I. Badhrees, E. Prencipe, G. Caria, G. Varner, U. Tamponi, S. Al Said, S. Jia, Y. Jin, O. Grzymkowska, C. H. Wang, T. Bilka, T. E. Browder, S. Uno, C. Schwanda, D. Cinabro, J. Libby, D. M. Asner, K. Hayasaka, Takeo Kawasaki, Shoichi Watanuki, Prafulla Kumar Behera, Bo Wang, H. E. Cho, Andrey Sokolov, G. Inguglia, P. Chang, James E. Fast, Somnath Choudhury, and Semen Eidelman

Subjects
Physics, Semileptonic decay, Particle physics, Muon, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, General Physics and Astronomy, 01 natural sciences, Standard Model, KEKB, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Bar (unit), Lepton
Abstract

The experimental results on the ratios of branching fractions $\mathcal{R}(D) = {\cal B}(\bar{B} \to D \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B} \to D \ell^- \bar{\nu}_{\ell})$ and $\mathcal{R}(D^*) = {\cal B}(\bar{B} \to D^* \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B} \to D^* \ell^- \bar{\nu}_{\ell})$, where $\ell$ denotes an electron or a muon, show a long-standing discrepancy with the Standard Model predictions, and might hint to a violation of lepton flavor universality. We report a new simultaneous measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^*)$, based on a data sample containing $772 \times 10^6$ $B\bar{B}$ events recorded at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+ e^-$ collider. In this analysis the tag-side $B$ meson is reconstructed in a semileptonic decay mode and the signal-side $\tau$ is reconstructed in a purely leptonic decay. The measured values are $\mathcal{R}(D)= 0.307 \pm 0.037 \pm 0.016$ and $\mathcal{R}(D^*) = 0.283 \pm 0.018 \pm 0.014$, where the first uncertainties are statistical and the second are systematic. These results are in agreement with the Standard Model predictions within $0.2$, $1.1$ and $0.8$ standard deviations for $\mathcal{R}(D)$, $\mathcal{R}(D^*)$ and their combination, respectively. This work constitutes the most precise measurements of $\mathcal{R}(D)$ and $\mathcal{R}(D^*)$ performed to date as well as the first result for $\mathcal{R}(D)$ based on a semileptonic tagging method.

Published
2020

9. Search for an Invisibly Decaying Z′ Boson at Belle II in e+e−→μ+μ−(e±μ∓) Plus Missing Energy Final States

Author

I. Ripp-Baudot, F. Meggendorfer, V.N. Zhilich, D. Ferlewicz, E. Nakano, G.V. Russo, N. Akopov, S. Nishida, S. Longo, H. M. Wakeling, A. Pathak, M. De Nuccio, Rocky Bala Garg, L. Cao, Nataliia Kovalchuk, B. Spruck, T. J. Moon, T. Iijima, Soumen Paul, Dipak Kumar Sahoo, C. Kleinwort, K. Kumara, S. Fiore, W. B. Yan, Bumho Kim, C. W. Joo, K. Chilikin, Takeo Higuchi, Felix Metzner, Z. S. Stottler, P. Sartori, G. De Pietro, K. Miyabayashi, L. Zani, C. Wessel, N. K. Nisar, M. Bessner, C. Miller, C. Niebuhr, V. Babu, Abner Soffer, B. Scavino, E. Graziani, E. De La Cruz-Burelo, Elisa Manoni, Yang Chen, S. Reiter, R. Peschke, S. Sandilya, H. Windel, Carlos Marinas, M. Wakai, Marco Milesi, J. Baudot, C. Hadjivasiliou, Yoshinobu Unno, C. Hearty, T. Kuhr, H. G. Moser, I. Komarov, M. Bertemes, M. Nishimura, T. V. Dong, N. Taniguchi, J. H. Yin, U. Tamponi, Antonio Budano, Iki Adachi, Doo Young Kim, Agnese Martini, T. Ferber, A. K. Giri, Z. P. Zhang, V. Gaur, L. B. Rizzuto, T. Sumiyoshi, K. K. Joo, R. Godang, J. C. Mei, B. Paschen, S. Bussino, T. K. Pedlar, Soohyun Cho, S. Kurz, Tariq Aziz, Kohei Ogawa, K. Dort, S. Marcello, L. Corona, Prafulla Kumar Behera, Leo Piilonen, P. Taras, K. Azmi, Martin Ritter, Dmytro Levit, M. Masuda, B. Golob, L. Santelj, J. Gemmler, G. Casarosa, S. Wehle, M. Hernandez Villanueva, K. Inami, A. Vossen, G. Dujany, E. C. Hill, V. Aushev, J. S. Lange, A. Paladino, T. Czank, F. Dattola, T. D. Kimmel, S. Dey, D. Biswas, K. Nishimura, Frank Simon, S. E. Vahsen, A. B. Kaliyar, C. Rosenfeld, R. M. Seddon, A. Hershenhorn, A. Fodor, M. Remnev, A. Sangal, Vladimir Popov, J. Schueler, H. Park, A. Bozek, Kiyoshi Tanida, Sw. Banerjee, Felix Mueller, L. K. Li, M. Merola, S. Jia, Y. Iwasaki, Y. Sakai, E. Paoloni, L. Burmistrov, Pavel Krokovny, D. Dossett, P. K. Resmi, C.-L. Hsu, Y. J. Kwon, G. Finocchiaro, A. Panta, K. Lieret, S. Lacaprara, I. Domínguez Jiménez, R. Cheaib, Tagir Aushev, Seongbae Yang, J. Irakkathil Jabbar, Q. Y. Liu, S. Cunliffe, Makoto Tabata, Jakub Kandra, Andreas Warburton, Jürgen Becker, S. Yamada, E. Prencipe, Z. Doležal, N. Rout, V. Zhukova, Y. Onuki, Xiaopeng Zhou, A. De Yta-Hernandez, D. Červenkov, G. B. Mohanty, Alberto Aloisio, Y. Kato, G. Varner, J. F. Strube, M. C. Chang, M. Z. Wang, Peter Kodys, W. W. Jacobs, B. G. Fulsom, Y. Yusa, M. Nayak, B. Oberhof, T. Koga, A. Passeri, C. P. Shen, Y. Kim, P. Branchini, J. Bennett, M. Takizawa, T. Matsuda, K. Senyo, Enrico Bernieri, G. Karyan, L. Lanceri, S. K. Choi, S. Baehr, P. Gomis, Yi Fan Hu, Florian Urs Bernlochner, F. Di Capua, Shuji Tanaka, H. Aihara, E. Solovieva, G. Muroyama, S. Duell, I. M. Peruzzi, P. Oskin, M. Maggiora, Kevin Varvell, H. Atmacan, S. Y. Suzuki, K. Lautenbach, Pere Rados, G. Rizzo, M. Bračko, G. Pakhlova, Y.-T. Chen, M. Destefanis, M. Piccolo, W. Gradl, Y. Onishchuk, Y. Jin, C. H. Wang, D. Greenwald, A. Vinokurova, J. G. Shiu, S. Dubey, I. Heredia-De La Cruz, D. E. Jaffe, S. Bettarini, F. Müller, S. Spataro, O. Hartbrich, H. Ozaki, K. Cho, H. Miyake, K. Trabelsi, S. H. Kim, Y. Guan, K. Unger, P. Pakhlov, M. Eliachevitch, Rakesh Kumar, A. Kuzmin, V. Savinov, T. M. G. Kraetzschmar, F. Bianchi, C. Z. Yuan, M. Campajola, F. Tenchini, Th. Müller, A. Sibidanov, Yukinori Sato, E. Won, R. A. Briere, S. H. Robertson, R. Pestotnik, Kodai Matsuoka, M. Hoek, E. J. Jang, R. Rasheed, V. Chekelian, D. Rodríguez Pérez, K. Kim, H. Hayashii, H. Ono, R. Van Tonder, H. Ye, M. Barrett, R. Mizuk, L. Li Gioi, Y. B. Li, C. H. Kim, G. De Nardo, M. T. Hedges, Yongsun Kim, B. Gobbo, P. Leitl, Hidekazu Kakuno, Concettina Sfienti, S. Uno, R. Stroili, B. G. Cheon, C. Schwanda, L. M. Cremaldi, D. Cinabro, E. Torassa, Claudia Cecchi, M. V. Purohit, S. Korpar, S. C. Lee, T. Hara, F. Forti, T. Geßler, M. Garcia-Hernandez, E. Ganiev, S. Halder, J. M. Roney, M. Yonenaga, M. Sumihama, M. Watanabe, T. E. Browder, H. Kindo, C. Praz, P. Bambade, J. Libby, D. M. Asner, K. Hayasaka, M. T. Prim, Takeo Kawasaki, Andrey Sokolov, A. Gaz, James E. Fast, Semen Eidelman, J. Kahn, F. Meier, R. Mussa, H. B. Jeon, Bruce Yabsley, S. Stefkova, R. Giordano, G. Inguglia, A. Ishikawa, G. Nazaryan, Y. Seino, M. Kumar, M. Nakao, Somnath Choudhury, P. Križan, S. Kohani, Y. Ushiroda, M. Uchida, Tao Luo, A. Gellrich, Y. Maeda, T. Tsuboyama, D. Matvienko, Q. D. Zhou, J. Wiechczynski, C. La Licata, B.A. Shwartz, M. Starič, D. Liventsev, T. Morii, R. Kroeger, I. S. Lee, P. Goldenzweig, N. Anh Ky, R. de Sangro, Z. Liptak, P. Ahlburg, W. A. T. Wan Abdullah, D. J. Summers, R. Itoh, A. Rostomyan, R. J. Sobie, John Webb, L. Vitale, J. Kumar, D. Neverov, A. Selce, and Vikas Bansal

Subjects
Physics, Coupling constant, Particle physics, Missing energy, Physics beyond the Standard Model, General Physics and Astronomy, 01 natural sciences, law.invention, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, Boson
Abstract

Theories beyond the standard model often predict the existence of an additional neutral boson, the Z′. Using data collected by the Belle II experiment during 2018 at the SuperKEKB collider, we perform the first searches for the invisible decay of a Z′ in the process e+e-→μ+μ-Z′ and of a lepton-flavor-violating Z′ in e+e-→e±μZ′. We do not find any excess of events and set 90% credibility level upper limits on the cross sections of these processes. We translate the former, in the framework of an Lμ-Lτ theory, into upper limits on the Z′ coupling constant at the level of 5×10-2-1 for MZ′≤6 GeV/c2.

Published
2020

10. Precise Measurement of the D⁰ and D⁺ Lifetimes at Belle II

Author

F., Abudinén, I., Adachi, K., Adamczyk, L., Aggarwal, H., Ahmed, H., Aihara, N., Akopov, A., Aloisio, N., Anh Ky, D. M., Asner, H., Atmacan, V., Aushev, V., Babu, S., Bacher, H., Bae, S., Baehr, S., Bahinipati, P., Bambade, Sw., Banerjee, S., Bansal, M., Barrett, J., Baudot, M., Bauer, A., Baur, J., Becker, P. K., Behera, J. V., Bennett, E., Bernieri, F. U., Bernlochner, M., Bertemes, E., Bertholet, M., Bessner, S., Bettarini, V., Bhardwaj, F., Bianchi, T., Bilka, S., Bilokin, D., Biswas, A., Bobrov, D., Bodrov, A., Bolz, A., Bozek, M., Bračko, P., Branchini, N., Braun, R. A., Briere, T. E., Browder, A., Budano, S., Bussino, M., Campajola, L., Cao, G., Casarosa, C., Cecchi, D., Červenkov, M.-C., Chang, P., Chang, R., Cheaib, V., Chekelian, C., Chen, Y.-T., Chen, B. G., Cheon, K., Chilikin, K., Chirapatpimol, H.-E., Cho, K., Cho, S.-J., Cho, S.-K., Choi, S., Choudhury, D., Cinabro, L., Corona, L. M., Cremaldi, S., Cunliffe, T., Czank, F., Dattola, E., De La Cruz-Burelo, G., de Marino, G., De Nardo, G., De Pietro, R., de Sangro, M., Destefanis, S., Dey, A., De Yta-Hernandez, A., Di Canto, F., Di Capua, J., Dingfelder, Z., Doležal, I., Domínguez Jiménez, T. V., Dong, M., Dorigo, K., Dort, D., Dossett, S., Dubey, S., Duell, G., Dujany, P., Ecker, D., Epifanov, T., Ferber, D., Ferlewicz, G., Finocchiaro, K., Flood, A., Fodor, F., Forti, B. G., Fulsom, A., Gabrielli, N., Gabyshev, A., Gaz, A., Gellrich, G., Giakoustidis, R., Giordano, A., Giri, A., Glazov, B., Gobbo, R., Godang, P., Goldenzweig, B., Golob, W., Gradl, E., Graziani, D., Greenwald, T., Gu, Y., Guan, K., Gudkova, J., Guilliams, C., Hadjivasiliou, S., Halder, K., Hara, T., Hara, O., Hartbrich, K., Hayasaka, H., Hayashii, S., Hazra, C., Hearty, I., Heredia de la Cruz, M., Hernández Villanueva, A., Hershenhorn, T., Higuchi, E. C., Hill, H., Hirata, M., Hoek, M., Hohmann, C.-L., Hsu, T., Humair, T., Iijima, K., Inami, G., Inguglia, A., Ishikawa, R., Itoh, M., Iwasaki, Y., Iwasaki, W. W., Jacobs, D. E., Jaffe, E.-J., Jang, S., Jia, Y., Jin, H., Junkerkalefeld, H., Kakuno, A. B., Kaliyar, J., Kandra, K. H., Kang, R., Karl, G., Karyan, Y., Kato, T., Kawasaki, C., Kiesling, C.-H., Kim, D. Y., Kim, Y.-K., Kim, Y., Kim, T. D., Kimmel, K., Kinoshita, P., Kodyš, T., Koga, S., Kohani, T., Konno, S., Korpar, E., Kovalenko, R., Kowalewski, T. M. G., Kraetzschmar, F., Krinner, P., Križan, P., Krokovny, T., Kuhr, J., Kumar, M., Kumar, R., Kumar, K., Kumara, S., Kurz, A., Kuzmin, Y.-J., Kwon, S., Lacaprara, K., Lalwani, T., Lam, L., Lanceri, J. S., Lange, M., Laurenza, K., Lautenbach, F. R., Le Diberder, S. C., Lee, P., Leitl, D., Levit, C., Li, L. K., Li, J., Libby, K., Lieret, Z., Liptak, Q. Y., Liu, D., Liventsev, S., Longo, T., Lueck, C., Lyu, R., Manfredi, E., Manoni, C., Marinas, A., Martini, T., Matsuda, K., Matsuoka, D., Matvienko, J. A., McKenna, F., Meier, M., Merola, F., Metzner, C., Miller, K., Miyabayashi, R., Mizuk, G. B., Mohanty, N., Molina-Gonzalez, H., Moon, H.-G., Moser, M., Mrvar, C., Murphy, R., Mussa, I., Nakamura, K. R., Nakamura, M., Nakao, H., Nakazawa, Z., Natkaniec, A., Natochii, G., Nazaryan, C., Niebuhr, M., Niiyama, N. K., Nisar, S., Nishida, K., Nishimura, S., Ogawa, Y., Onishchuk, H., Ono, Y., Onuki, P., Oskin, E. R., Oxford, H., Ozaki, P., Pakhlov, A., Paladino, T., Pang, A., Panta, E., Paoloni, S., Pardi, H., Park, S.-H., Park, B., Paschen, A., Passeri, A., Pathak, S., Patra, S., Paul, T. K., Pedlar, I., Peruzzi, R., Peschke, R., Pestotnik, F., Pham, M., Piccolo, L. E., Piilonen, G., Pinna Angioni, P. L. M., Podesta-Lerma, T., Podobnik, S., Pokharel, G., Polat, V., Popov, C., Praz, S., Prell, E., Prencipe, M. T., Prim, M. V., Purohit, H., Purwar, N., Rad, P., Rados, S., Raiz, S., Reiter, M., Remnev, I., Ripp-Baudot, G., Rizzo, L. B., Rizzuto, S. H., Robertson, J. M., Roney, A., Rostomyan, N., Rout, M., Rozanska, D., Sahoo, D. A., Sanders, S., Sandilya, A., Sangal, L., Santelj, Y., Sato, V., Savinov, B., Scavino, J., Schueler, C., Schwanda, A. J., Schwartz, Y., Seino, A., Selce, K., Senyo, J., Serrano, C., Sfienti, J.-G., Shiu, B., Shwartz, A., Sibidanov, F., Simon, R. J., Sobie, A., Soffer, A., Sokolov, E., Solovieva, S., Spataro, B., Spruck, M., Starič, S., Stefkova, Z. S., Stottler, R., Stroili, J., Strube, M., Sumihama, W., Sutcliffe, S. Y., Suzuki, H., Svidras, M., Tabata, M., Takizawa, U., Tamponi, S., Tanaka, K., Tanida, H., Tanigawa, N., Taniguchi, F., Tenchini, R., Tiwary, D., Tonelli, E., Torassa, N., Toutounji, K., Trabelsi, T., Tsuboyama, I., Ueda, S., Uehara, Y., Uematsu, T., Uglov, K., Unger, Y., Unno, K., Uno, S., Uno, P., Urquijo, Y., Ushiroda, Y. V., Usov, S. E., Vahsen, R., van Tonder, G. S., Varner, A., Vinokurova, L., Vitale, A., Vossen, E., Waheed, H. M., Wakeling, E., Wang, M.-Z., Wang, X. L., Wang, A., Warburton, M., Watanabe, M., Welsch, C., Wessel, J., Wiechczynski, E., Won, X. P., Xu, B. D., Yabsley, S., Yamada, W., Yan, S. B., Yang, H., Ye, J., Yelton, J. H., Yin, K., Yoshihara, Y., Yusa, L., Zani, V., Zhilich, Q. D., Zhou, X. Y., Zhou, V. I., Zhukova, and R., Žlebčík

Abstract

We report a measurement of the D⁰ and D⁺ lifetimes using D⁰→K⁻π⁺ and D⁺→K⁻π⁺π⁺ decays reconstructed in e⁺e⁻→[Formula: see text] data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy e⁺e⁻ collider. The data, collected at center-of-mass energies at or near the Υ(4S) resonance, correspond to an integrated luminosity of 72 fb⁻¹. The results, τ(D⁰)=410.5±1.1(stat)±0.8(syst) fs and τ(D⁺)=1030.4±4.7(stat)±3.1(syst) fs, are the most precise to date and are consistent with previous determinations.

Published
2021

11. Precision Measurement of Charged Pion and Kaon Differential Cross Sections ine+e−Annihilation ats=10.52 GeV

Author

M. Leitgab, R. Seidl, M. Grosse Perdekamp, A. Vossen, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, B. Bhuyan, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, Z. Drásal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, V. Gaur, N. Gabyshev, R. Gillard, F. Giordano, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, W. W. Jacobs, T. Julius, J. H. Kang, P. Kapusta, E. Kato, T. Kawasaki, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, M. J. Kim, J. Klucar, B. R. Ko, P. Kodyš, R. T. Kouzes, P. Križan, P. Krokovny, R. Kumar, T. Kumita, Y.-J. Kwon, J. S. Lange, S.-H. Lee, Y. Li, Z. Q. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, A. Moll, N. Muramatsu, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, O. Nitoh, A. Ogawa, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, C. Oswald, P. Pakhlov, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Röhrken, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, M. Starič, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, T. Tsuboyama, M. Uchida, T. Uglov, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, J. Wang, M.-Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, V. Zhilich, and V. Zhulanov

Published
2013
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12. Evidence of a New Narrow Resonance Decaying toχc1γinB→χc1γK

Author

V. Bhardwaj, K. Miyabayashi, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, V. Chobanova, S.-K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, K. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, H. Hayashii, Y. Horii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, T. Iwashita, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, R. Kumar, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, Y. Li, C. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, D. Matvienko, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, R. Mussa, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, P. Pakhlov, G. Pakhlova, E. Panzenböck, H. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, A. Rostomyan, H. Sahoo, T. Saito, K. Sakai, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, R. Seidl, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, F. Simon, J. B. Singh, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, M. Starič, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, P. Urquijo, Y. Usov, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, M. N. Wagner, C. H. Wang, M.-Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, E. Won, B. D. Yabsley, J. Yamaoka, Y. Yamashita, S. Yashchenko, Y. Yook, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, and A. Zupanc

Published
2013
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13. Search for anH-Dibaryon with a Mass near2mΛinΥ(1S)andΥ(2S)Decays

Author

B. H. Kim, S. L. Olsen, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, A. Bay, K. Belous, B. Bhuyan, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I.-S. Cho, K. Cho, V. Chobanova, S.-K. Choi, Y. Choi, D. Cinabro, J. Dalseno, Z. Doležal, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, J. E. Fast, V. Gaur, S. Ganguly, R. Gillard, Y. M. Goh, K. Hayasaka, H. Hayashii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, P. Kapusta, E. Kato, H. Kichimi, H. J. Kim, H. O. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, X. Li, Y. Li, J. Libby, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, R. Mussa, E. Nakano, M. Nakao, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, K. Nishimura, T. Ohshima, S. Okuno, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, M. Peters, M. Petrič, L. E. Piilonen, M. Ritter, S. Ryu, H. Sahoo, Y. Sakai, S. Sandilya, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, D. Semmler, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, P. Wang, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, V. Zhilich, and A. Zupanc

Published
2013
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14. Evidence forB−→τ−ν¯τwith a Hadronic Tagging Method Using the Full Data Sample of Belle

Author

K. Hara, Y. Horii, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, T. Aziz, A. M. Bakich, M. Barrett, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I.-S. Cho, K. Cho, Y. Choi, D. Cinabro, J. Dalseno, J. Dingfelder, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, T. Higuchi, Y. Hoshi, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, M. Nayak, C. Ng, N. K. Nisar, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, C. Oswald, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Prim, M. Röhrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, S. Sandilya, D. Santel, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, M. Starič, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, V. Vorobyev, M. N. Wagner, C. H. Wang, M.-Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, and A. Zupanc

Published
2013
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15. Evidence for theηb(2S)and Observation ofhb(1P)→ηb(1S)γandhb(2P)→ηb(1S)γ

Author

R. Mizuk, D. M. Asner, A. Bondar, T. K. Pedlar, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bay, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, G. Bonvicini, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I.-S. Cho, K. Cho, S.-K. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, A. Drutskoy, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, I. Jaegle, T. Julius, J. H. Kang, P. Kapusta, T. Kawasaki, H. J. Kim, H. O. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Koblitz, P. Kodyš, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, G. B. Mohanty, D. Mohapatra, A. Moll, N. Muramatsu, R. Mussa, M. Nakao, Z. Natkaniec, C. Ng, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, R. Pestotnik, M. Petrič, L. E. Piilonen, A. Poluektov, M. Röhrken, Y. Sakai, S. Sandilya, D. Santel, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, M. Sumihama, T. Sumiyoshi, K. Tanida, G. Tatishvili, Y. Teramoto, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Vanhoefer, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, J. Yamaoka, Y. Yamashita, C. Z. Yuan, Z. P. Zhang, and V. Zhilich

Published
2012
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16. Evidence forCPViolation in the DecayD+→KS0π+

Author

B. R. Ko, E. Won, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, M.-C. Chang, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I.-S. Cho, K. Cho, Y. Choi, Z. Doležal, Z. Drásal, S. Eidelman, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, S. Koblitz, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, Y. Li, J. Libby, C.-L. Lim, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, K. S. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, A. Poluektov, M. Ritter, M. Röhrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, H. Yamamoto, Y. Yamashita, C. Z. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, and A. Zupanc

Published
2012
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17. Observation of New Resonant Structures inγγ→ωϕ,ϕϕ, andωω

Author

Z. Q. Liu, C. P. Shen, C. Z. Yuan, T. Iijima, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, M.-C. Chang, P. Chang, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I.-S. Cho, K. Cho, S.-K. Choi, Y. Choi, J. Dalseno, Z. Doležal, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, J. Haba, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, S. Koblitz, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, X. R. Li, Y. Li, J. Libby, C. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, C. Ng, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, R. Seidl, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, A. Vinokurova, V. Vorobyev, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, Y. Yamashita, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, and V. Zhulanov

Published
2012
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18. Precise Measurement of theCPViolation Parametersin 2ϕ1inB0→(cc¯)K0Decays

Author

I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bay, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, K. Cho, S.-K. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Doležal, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, J. Haba, K. Hara, T. Hara, K. Hayasaka, H. Hayashii, T. Higuchi, Y. Horii, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, S. Koblitz, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, Y. Li, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, K. Miyabayashi, H. Miyata, Y. Miyazaki, R. Mizuk, G. B. Mohanty, T. Mori, N. Muramatsu, E. Nakano, M. Nakao, H. Nakazawa, S. Neubauer, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. K. Park, K. S. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, A. Poluektov, M. Röhrken, M. Rozanska, H. Sahoo, K. Sakai, Y. Sakai, T. Sanuki, Y. Sato, O. Schneider, C. Schwanda, A. J. Schwartz, K. Senyo, V. Shebalin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, J. B. Singh, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, M. Sumihama, K. Sumisawa, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, T. Uglov, Y. Unno, S. Uno, Y. Ushiroda, S. E. Vahsen, G. Varner, K. E. Varvell, A. Vinokurova, V. Vorobyev, C. H. Wang, M.-Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, M. Yamauchi, Y. Yusa, Z. P. Zhang, V. Zhilich, A. Zupanc, and O. Zyukova

Published
2012
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19. Measurement of theCP-Violation Parametersin 2ϕ1with a New Tagging Method at theΥ(5S)Resonance

Author

Y. Sato, H. Yamamoto, H. Aihara, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, P. Chang, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I.-S. Cho, K. Cho, S.-K. Choi, Y. Choi, J. Dalseno, Z. Doležal, Z. Drásal, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W.-S. Hou, H. J. Hyun, A. Ishikawa, R. Itoh, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, P. Kapusta, T. Kawasaki, H. Kichimi, C. Kiesling, H. J. Kim, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, N. Kobayashi, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, Y.-J. Kwon, J. S. Lange, S.-H. Lee, J. Li, Y. Li, C. Liu, Z. Q. Liu, R. Louvot, S. McOnie, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, N. Muramatsu, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, K. Nishimura, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, M. Petrič, L. E. Piilonen, A. Poluektov, M. Röhrken, S. Ryu, H. Sahoo, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, A. J. Schwartz, R. Seidl, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T.-A. Shibata, J.-G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, J. Stypula, M. Sumihama, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, K. Trabelsi, M. Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, G. Varner, K. E. Varvell, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, J. Wicht, E. Won, B. D. Yabsley, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, and A. Zupanc

Published
2012
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20. Observation of Two Charged Bottomoniumlike Resonances inΥ(5S)Decays

Author

A. Bondar, A. Garmash, R. Mizuk, D. Santel, K. Kinoshita, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, T. Aushev, T. Aziz, A. M. Bakich, E. Barberio, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bozek, M. Bračko, T. E. Browder, M.-C. Chang, P. Chang, A. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I.-S. Cho, K. Cho, S.-K. Choi, Y. Choi, J. Dalseno, M. Danilov, Z. Doležal, A. Drutskoy, S. Eidelman, D. Epifanov, J. E. Fast, V. Gaur, N. Gabyshev, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, Y. Hoshi, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, M. Iwabuchi, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, H. Kichimi, C. Kiesling, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, B. R. Ko, N. Kobayashi, S. Koblitz, P. Kodyš, S. Korpar, P. Križan, T. Kuhr, R. Kumar, T. Kumita, A. Kuzmin, J. S. Lange, S.-H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Z. Q. Liu, D. Liventsev, R. Louvot, D. Matvienko, S. McOnie, H. Miyata, Y. Miyazaki, G. B. Mohanty, A. Moll, N. Muramatsu, R. Mussa, M. Nakao, Z. Natkaniec, S. Neubauer, M. Niiyama, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Park, H. K. Park, T. K. Pedlar, M. Petrič, L. E. Piilonen, A. Poluektov, M. Prim, M. Ritter, M. Röhrken, S. Ryu, H. Sahoo, Y. Sakai, T. Sanuki, O. Schneider, C. Schwanda, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, T.-A. Shibata, J.-G. Shiu, B. Shwartz, F. Simon, P. Smerkol, Y.-S. Sohn, A. Sokolov, E. Solovieva, M. Starič, M. Sumihama, T. Sumiyoshi, S. Tanaka, G. Tatishvili, Y. Teramoto, I. Tikhomirov, M. Uchida, S. Uehara, T. Uglov, Y. Ushiroda, S. E. Vahsen, G. Varner, A. Vinokurova, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc, and O. Zyukova

Published
2012
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21. First Measurements of Absolute Branching Fractions of the Ξc0 Baryon at Belle

Author

S. Jia, C. H. Wang, H. Ye, S. Pardi, V.N. Zhilich, T. Aushev, A. K. Giri, G.V. Russo, G. Schnell, K. Tanida, M. Niiyama, Luka Santelj, V. Zhukova, Y. Onuki, T. Iijima, J. G. Shiu, M. Masuda, R. Mussa, Rocky Bala Garg, T. Bilka, Jyoti Prakash Biswal, K. Miyabayashi, I. Badhrees, X. L. Wang, A. Ishikawa, V. Gaur, M. Nakao, M. Takizawa, A. Kuzmin, Phillip Urquijo, R. Van Tonder, L. Cao, I. Adachi, P. Križan, Soumen Paul, S. Eidelman, John Yelton, Z. Doležal, Bingran Wang, J. H. Yin, Jihwa Lee, Y. B. Li, T. Matsuda, W. Sutcliffe, S. Uno, J. B. Kim, M. Merola, S. Cunliffe, K. K. Joo, Massimo Berger, C.-L. Hsu, Shih-Chang Lee, E. Prencipe, A. Bozek, Y. Iwasaki, Y. J. Kwon, G. B. Mohanty, C. Z. Yuan, E. Solovieva, Y. Ban, K. Senyo, Vikas Bansal, Y. Yusa, E. Nakano, M. Uchida, D. Joffe, M. Salehi, O. Schneider, L. K. Li, S. H. Kim, P. Krokovny, V. Bhardwaj, K. Cho, B. Shwartz, H. J. Kim, K. Trabelsi, G. S. Varner, M. Nayak, Seokhee Park, L. E. Piilonen, B. Bhuyan, T. V. Dong, Y. Choi, K. J. Nath, T. A. Shibata, K. Inami, H. Kichimi, A. J. Schwartz, T. Uglov, C. P. Shen, J. Libby, D. M. Asner, K. Hayasaka, B. G. Fulsom, B. Pal, K. T. Kim, P. Pakhlov, Y. Sakai, P. L. Wang, M. Sumihama, M. Iwasaki, B. G. Cheon, H. Miyata, Peter Kodys, W. W. Jacobs, S. Al Said, V. Savinov, D. Liventsev, R. Ayad, James E. Fast, Vladimir Popov, T. K. Pedlar, Y. Jin, J. Schueler, E. Won, Z. P. Zhang, S. K. Choi, R. Kroeger, M. E. Sevior, P. Goldenzweig, S. Sandilya, N. Gabyshev, D. Červenkov, S. Di Carlo, S. Nishida, J. MacNaughton, Seongbae Yang, M. Z. Wang, K. Kinoshita, R. Itoh, D. Y. Kim, M. Starič, T. Kumita, G. Karyan, G. Pakhlova, A. Bondar, F. Tenchini, S. Korpar, D. Kotchetkov, B. Grube, R. Mizuk, T. Sumiyoshi, C. Schwanda, H. Ono, T. Sanuki, Y. Seino, C. Beleño, M. Bračko, Y. Tao, H. Aihara, Y. Unno, Takeo Kawasaki, H. Hayashii, D. Cinabro, M. Lubej, G. Inguglia, K. Chilikin, L. Li Gioi, A. Garmash, Daniel Greenwald, R. Pestotnik, Z. Drásal, and A. Chen

Subjects
0103 physical sciences, General Physics and Astronomy, Library science, 010306 general physics, 01 natural sciences
Abstract

We thank Professor Fu-sheng Yu for useful discussions and comments. Y. B. L. acknowledges the support from the China Scholarship Council (201706010043). We thank the KEKB group for excellent operation of the accelerator; the KEK cryogenics group for efficient solenoid operations; and the KEK computer group, the NII, and PNNL/EMSL for valuable computing and SINET5 network support. We acknowledge support from MEXT, JSPS and Nagoya’s TLPRC (Japan); ARC (Australia); FWF (Austria); the National Natural Science Foundation of China under Contracts No. 11475187, No. 11521505, No. 11575017, No. 11761141009; the CAS Center for Excellence in Particle Physics (CCEPP); MSMT (Czechia); CZF, DFG, EXC153, and VS (Germany); DST (India); INFN (Italy); MOE, MSIP, NRF, RSRI, FLRFAS project and GSDC of KISTI and KREONET/GLORIAD (Korea); MNiSW and NCN (Poland); MSHE, Agreement No. 14.W03.31.0026 (Russia); ARRS (Slovenia); IKERBASQUE (Spain); SNSF (Switzerland); MOE and MOST (Taiwan); and DOE and NSF (U.S.).

Published
2019

22. Observation of Ξ(1620)0 and Evidence for Ξ(1690)0 in Ξc+→Ξ−π+π+ Decays

Author

V.N. Zhilich, Y. Kato, S. Al Said, K. T. Kim, K. Miyabayashi, I. Badhrees, M. Merola, J. K. Ahn, J. G. Shiu, H. Park, A. Bozek, Andrey Sokolov, R. Mizuk, S. K. Choi, C. Kiesling, Y. Choi, K. J. Nath, H. Ono, K. Chilikin, Phillip Urquijo, C. Beleño, Y. B. Li, James E. Fast, K. Senyo, Semen Eidelman, P. Pakhlov, G. Schnell, D. Epifanov, M. Iwasaki, S. Hirose, Iki Adachi, M. Takizawa, B. G. Cheon, S. Uno, C. Schwanda, S. Nishida, M. Sumihama, N. Taniguchi, Vikas Bansal, A. Garmash, S. Sandilya, N. K. Nisar, B. Pal, C. P. Shen, L. E. Piilonen, E. Nakano, M. Uchida, John Yelton, Z. Doležal, L. K. Li, X. L. Wang, V. Bhardwaj, C. Van Hulse, Z. Natkaniec, Z. Drásal, J. B. Kim, T. K. Pedlar, Soumen Paul, V. Babu, M. Niiyama, M. Starič, Z. P. Zhang, V. Chekelian, T. Aushev, V. Gaur, G. S. Varner, S. Korpar, Massimo Berger, D. Kotchetkov, Eleonora Guido, S. E. Vahsen, T. Nakano, T. Julius, R. Itoh, Shih-Chang Lee, C. Z. Yuan, Peter Kodys, W. W. Jacobs, K. K. Joo, B. Bhuyan, A. B. Kaliyar, R. Ayad, H. K. Moon, J. S. Lange, B. G. Fulsom, Seema Bahinipati, G. Pakhlova, R. Mussa, G. B. Mohanty, H. B. Jeon, T. Matsuda, M. Gelb, Y. Iwasaki, Y. J. Kwon, D. Y. Kim, A. Ishikawa, F. Tenchini, V. Savinov, O. Schneider, S. Di Carlo, Jyoti Prakash Biswal, G. Karyan, T. Sumiyoshi, M. Nakao, A. Chen, Y. Yusa, S. Zakharov, P. Križan, G. Bonvicini, T. V. Dong, Martin Ritter, T. A. Shibata, H. Miyata, J. F. Strube, V. Vorobyev, T. Sanuki, E. Won, A. K. Giri, V. Zhukova, S. H. Kim, P. Krokovny, Rakesh Kumar, R. Pestotnik, M. Masuda, P. L. Wang, K. H. Kang, K. Cho, H. Atmacan, S. Cunliffe, L. Li Gioi, T. Bilka, G.V. Russo, M. Watanabe, V.E. Shebalin, T. E. Browder, U. Tamponi, W. S. Hou, T. Mori, H. Aihara, S. Jia, C. H. Wang, H. Ye, Tara Nanut, T. Uglov, A. Kuzmin, M. Bračko, Rocky Bala Garg, Eberhard Widmann, A. M. Bakich, N. Dash, B.A. Shwartz, N. Gabyshev, D. Červenkov, D. Liventsev, Vladimir Zhulanov, Y. Jin, R. Kroeger, M. E. Sevior, I. S. Lee, P. Goldenzweig, Tao Luo, K. Tanida, Bingran Wang, D. Matvienko, D. Cinabro, M. Lubej, G. Inguglia, E. Solovieva, J. Haba, A. Vossen, Somnath Choudhury, S. Pardi, Frank Simon, Vladimir Popov, J. Libby, D. M. Asner, K. Hayasaka, Y. Seino, Shoichi Watanuki, Dipak Kumar Sahoo, Luka Santelj, K. Inami, M. Z. Wang, K. Kinoshita, T. Czank, and H. Hayashii

Subjects
Physics, Particle physics, Electron–positron annihilation, Quark model, Hyperon, General Physics and Astronomy, Strangeness, 01 natural sciences, Baryon, KEKB, 0103 physical sciences, Pi, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

We report the first observation of the doubly-strange baryon $\Xi(1620)^0$ in its decay to $\Xi^-\pi^+$ via $\Xi_c^+ \rightarrow \Xi^- \pi^+ \pi^+$ decays based on a $980\,{\rm fb}^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The mass and width are measured to be 1610.4 $\pm$ 6.0 (stat) $^{+5.9}_{-3.5}$ (syst)~MeV$/c^2$ and 59.9 $\pm$ 4.8 (stat) $^{+2.8}_{-3.0}$ (syst)~MeV, respectively. We obtain 4.0$\sigma$ evidence of the $\Xi(1690)^0$ with the same data sample. These results shed light on the structure of hyperon resonances with strangeness $S=-2$.

Published
2019

23. Observation of Transverse Λ/Λ¯ Hyperon Polarization in e+e− Annihilation at Belle

Author

Vikas Bansal, I. Badhrees, H. Aihara, C. Van Hulse, S. Hirose, A. M. Bakich, Z. Natkaniec, A. Zupanc, T. Matsuda, S. Uno, N. Gabyshev, D. Červenkov, T. Sumiyoshi, S. E. Vahsen, G. Pakhlova, Rocky Bala Garg, Eberhard Widmann, R. Mussa, H. B. Jeon, J. K. Ahn, M. Niiyama, T. Mori, Y. Iwasaki, Y. J. Kwon, T. A. Shibata, H. Miyata, Y. Usov, G. Bonvicini, A. Ishikawa, Y. Seino, M. Nakao, Prafulla Kumar Behera, P. Križan, C. Beleño, M. Iwasaki, O. Schneider, Jyoti Prakash Biswal, M. Z. Wang, K. Kinoshita, G. Schnell, D. Matvienko, Byung Gu Cheon, I. Jaegle, R. Ayad, T. Iijima, L. Li Gioi, T. Julius, B. G. Fulsom, S. Al Said, A. Vinokurova, J. G. Shiu, H. Park, K. Cho, W. Sutcliffe, Yoshinobu Unno, A. Bozek, Vladimir Popov, Shih-Chang Lee, G. B. Mohanty, J. F. Strube, T. Kuhr, K. Senyo, S. H. Kim, Massimo Berger, R. Seidl, R. Itoh, B. Bhuyan, C. Kiesling, M. Nayak, Dipak Kumar Sahoo, Peter Kodys, C. Z. Yuan, W. W. Jacobs, T. E. Browder, K. H. Kang, S. Sandilya, Y. Yusa, S. Korpar, G.V. Russo, S. Cunliffe, H. J. Kim, D. Joffe, A. Bobrov, M. Bračko, E. Prencipe, M. Uchida, M. Gelb, L. K. Li, S. Di Carlo, T. K. Pedlar, V. Savinov, M. Salehi, N. K. Nisar, M. Takizawa, A. Garmash, Y. Guan, Andrey Sokolov, D. Epifanov, A. K. Giri, A. Chen, V. Bhardwaj, B. Pal, Z. P. Zhang, K. Inami, W. S. Hou, M. Masuda, M. Merola, C. Schwanda, Iki Adachi, James E. Fast, Doo Young Kim, D. Cinabro, K. Chilikin, V. Babu, T. V. Dong, L. Cao, Y. Choi, K. J. Nath, Semen Eidelman, X. L. Wang, Tagir Aushev, V. Chekelian, L. Santelj, J. B. Kim, V. Vorobyev, R. Van Tonder, Eleonora Guido, Phillip Urquijo, A. Rostomyan, P. Wang, T. Ferber, E. Won, V.E. Shebalin, Y. Sakai, R. Pestotnik, H. Hayashii, Z. Drásal, Y. B. Li, V. Gaur, J. H. Yin, V.M. Aulchenko, G. Varner, Ken Suzuki, Soumen Paul, H. Ono, R. Mizuk, H. Atmacan, B. Golob, H. K. Moon, J. S. Lange, Takuro Sanuki, Kiyoshi Tanida, R. Kulasiri, K. K. Joo, Pavel Krokovny, M. Sumihama, John Yelton, Z. Doležal, K. T. Kim, T. Bilka, S. K. Choi, C. P. Shen, Tara Nanut, T. Uglov, H. Ye, A. Kuzmin, S. Ogawa, F. Tenchini, U. Tamponi, E. Waheed, S. Jia, J. Libby, D. M. Asner, K. Hayasaka, Y. Jin, C. H. Wang, Takeo Kawasaki, Shoichi Watanuki, S. Pardi, S. Okuno, M. Lubej, G. Inguglia, V. Zhukova, P. Chang, J. Haba, P. Pakhlov, Tao Luo, S. Nishida, Bingran Wang, A. Rabusov, K. Adamczyk, Jochen Dingfelder, M. Starič, D. Liventsev, Vladimir Zhulanov, R. Kroeger, M. E. Sevior, I. S. Lee, P. Goldenzweig, N. Dash, D. Kotchetkov, Leo Piilonen, A. Vossen, O. Seon, Frank Simon, E. Solovieva, and V.N. Zhilich

Subjects
Physics, Particle physics, Annihilation, Electron–positron annihilation, Hyperon, General Physics and Astronomy, Polarization (waves), Lambda, 01 natural sciences, Belle experiment, Nuclear physics, Transverse plane, 0103 physical sciences, Fragmentation function, 010306 general physics
Abstract

We report the first observation of the spontaneous polarization of Λ and Λ[over ¯] hyperons transverse to the production plane in e^{+}e^{-} annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive Λ/Λ[over ¯] production, we also report results with subtracted feed-down contributions from Σ^{0} and charm. This measurement uses a dataset of 800.4 fb^{-1} collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV. We observe a significant polarization that rises with the fractional energy carried by the Λ/Λ[over ¯] hyperon.

Published
2019

24. Observation of Ξ(1620)^{0} and Evidence for Ξ(1690)^{0} in Ξ_{c}^{+}→Ξ^{-}π^{+}π^{+} Decays

Author

M, Sumihama, I, Adachi, J K, Ahn, H, Aihara, S, Al Said, D M, Asner, H, Atmacan, T, Aushev, R, Ayad, V, Babu, I, Badhrees, S, Bahinipati, A M, Bakich, V, Bansal, C, Beleño, M, Berger, V, Bhardwaj, B, Bhuyan, T, Bilka, J, Biswal, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, V, Chekelian, A, Chen, B G, Cheon, K, Chilikin, K, Cho, S-K, Choi, Y, Choi, S, Choudhury, D, Cinabro, S, Cunliffe, T, Czank, N, Dash, S, Di Carlo, Z, Doležal, T V, Dong, Z, Drásal, S, Eidelman, D, Epifanov, J E, Fast, B G, Fulsom, R, Garg, V, Gaur, N, Gabyshev, A, Garmash, M, Gelb, A, Giri, P, Goldenzweig, E, Guido, J, Haba, K, Hayasaka, H, Hayashii, S, Hirose, W-S, Hou, K, Inami, G, Inguglia, A, Ishikawa, R, Itoh, M, Iwasaki, Y, Iwasaki, W W, Jacobs, H B, Jeon, S, Jia, Y, Jin, K K, Joo, T, Julius, A B, Kaliyar, K H, Kang, G, Karyan, Y, Kato, C, Kiesling, D Y, Kim, J B, Kim, K T, Kim, S H, Kim, K, Kinoshita, P, Kodyš, S, Korpar, D, Kotchetkov, P, Križan, R, Kroeger, P, Krokovny, R, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, I S, Lee, S C, Lee, L K, Li, Y B, Li, L, Li Gioi, J, Libby, D, Liventsev, M, Lubej, T, Luo, M, Masuda, T, Matsuda, D, Matvienko, M, Merola, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, H K, Moon, T, Mori, R, Mussa, E, Nakano, T, Nakano, M, Nakao, T, Nanut, K J, Nath, Z, Natkaniec, M, Niiyama, N K, Nisar, S, Nishida, H, Ono, P, Pakhlov, G, Pakhlova, B, Pal, S, Pardi, H, Park, S, Paul, T K, Pedlar, R, Pestotnik, L E, Piilonen, V, Popov, M, Ritter, G, Russo, D, Sahoo, S, Sandilya, L, Santelj, T, Sanuki, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, Y, Seino, K, Senyo, M E, Sevior, V, Shebalin, C P, Shen, T-A, Shibata, J-G, Shiu, B, Shwartz, F, Simon, A, Sokolov, E, Solovieva, M, Starič, J F, Strube, T, Sumiyoshi, M, Takizawa, U, Tamponi, K, Tanida, N, Taniguchi, F, Tenchini, M, Uchida, T, Uglov, S, Uno, P, Urquijo, S E, Vahsen, C, Van Hulse, G, Varner, V, Vorobyev, A, Vossen, B, Wang, C H, Wang, M-Z, Wang, P, Wang, X L, Wang, M, Watanabe, S, Watanuki, E, Widmann, E, Won, H, Ye, J, Yelton, C Z, Yuan, Y, Yusa, S, Zakharov, Z P, Zhang, V, Zhilich, V, Zhukova, and V, Zhulanov

Abstract

We report the first observation of the double strange baryon Ξ(1620)^{0} in its decay to Ξ^{-}π^{+} via Ξ_{c}^{+}→Ξ^{-}π^{+}π^{+} decays based on a 980 fb^{-1} data sample collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The mass and width are measured to be 1610.4±6.0(stat)_{-4.2}^{+6.1} (syst) MeV/c^{2} and 59.9±4.8(stat)_{-7.1}^{+2.8}(syst) MeV, respectively. We obtain 4.0σ evidence of the Ξ(1690)^{0} with the same data sample. These results shed light on the structure of hyperon resonances with strangeness S=-2.

Published
2019

25. First Evidence for cos2β>0 and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

Author

V. B. Golubev, K. Chilikin, L. Zani, J. R. Wilson, Iki Adachi, T. S. Miyashita, Doo Young Kim, A. Palano, S. Emery, M. Feindt, J. B. Kim, K. Griessinger, D. Epifanov, A. Hafner, W. R. Innes, David Hutchcroft, O. Long, R. Cenci, Brian Meadows, J. M. Izen, M. Bellis, Eleonora Guido, H. Neal, K. Inami, H. Ye, R. Kass, S. Martellotti, D. W G S Leith, G. Schnell, E. Won, R. Pestotnik, S. Nishida, A. Calcaterra, J. P. Coleman, J. A. McKenna, T. E. Browder, J. Ocariz, M. T. Graham, F. Ferroni, R. J. Sobie, A. Roodman, S. Pardi, J. L. Ritchie, Noritaka Shimizu, Vikas Bansal, Eleonora Luppi, A. Beaulieu, Tara Nanut, T. Uglov, A. V. Gritsan, G. Wormser, A. G. Denig, Vitaly Vorobyev, B. N. Ratcliff, R. Y. So, T. Kuhr, S. R. Wagner, G. De Nardo, H. M. Lacker, M. Starič, D. Liventsev, E. Nakano, Z. Drásal, V. Savinov, D. J. Summers, C. H. Cheng, H. Ono, D. A. Roberts, S. Al Said, T. Matsuda, A. J S Smith, D. S. Chao, Vladimir Zhulanov, R. Kroeger, E. Ben-Haim, M. E. Sevior, I. S. Lee, S. J. Sekula, C. Bozzi, R. Mizuk, M. Piccolo, F. Di Lodovico, S. Uno, R. Kulasiri, T. Schroeder, A. J. Lankford, S. Sandilya, R. Godang, P. Goldenzweig, P. Pakhlov, N. Tasneem, J. Albert, G.V. Russo, J. Cochran, Yu. G. Kolomensky, H. Hayashii, J. Libby, C. Van Hulse, T. A. Shibata, Z. C. Huard, U. Tamponi, S. Passaggio, H. Miyata, B. Pal, Y. B. Li, Marcin Chrzaszcz, F. Le Diberder, Michael Sokoloff, Ray Franklin Cowan, P. C. Kim, F. U. Bernlochner, P. Patteri, Prafulla Kumar Behera, W. S. Hou, I. M. Peruzzi, B. Oberhof, F. Simonetto, J. G. Shiu, G. J. King, V. Babu, K. T. Kim, J. K. Ahn, A. Soffer, M. Z. Wang, K. Kinoshita, B. Bhuyan, N. Guttman, H. Park, A. Bozek, S. H. Kim, J. Dorfan, M. Gelb, H. Koch, Vladimir Popov, A. Zallo, S. Jia, D. N. Brown, R. Stroili, R. Ayad, K. Cho, C. Hearty, M. Iwasaki, P. K. Resmi, Marcello Rotondo, B. G. Cheon, James E. Fast, A. Kuzmin, M. Ebert, T. K. Pedlar, T. Kumita, K. Yu. Todyshevx, F. Forti, Y. Choi, K. J. Nath, E. A. Kravchenko, L. Santelj, K. H. Kang, T. Leddig, Shih-Chang Lee, D. Matvienko, C. Voß, M. Bomben, J. Haba, Dominik Müller, X. C. Lou, C. Chen, G. Finocchiaro, C. Z. Yuan, Y. Jin, A. J. Schwartz, C. H. Wang, Alberto Lusiani, Semen Eidelman, E. Grauges, L. Vitale, S. Ogawa, A. Rossi, Y. Watanabe, J. P. Lees, A. Filippi, S. E. Vahsen, G. A. Cowan, C. Bünger, C. Sciacca, R. C. Field, Gabriele Simi, G. Eigen, R. Gorodeisky, F. Martinez-Vidal, J. J. Walsh, C. Schwanda, R. Itoh, H. Ahmed, D. Cinabro, Tao Luo, F. Tenchini, Th. Müller, G. Rizzo, Y. Sakai, D. Bernard, J. Chauveau, S. I. Serednyakov, F. Palombo, S. Korpar, E. Gabathuler, T. Ferber, Tagir Aushev, C. Cartaro, Y. Onuki, A. Jawahery, M. Nayak, G. Cibinetto, M. K. Sullivan, M. Margoni, Y. Guan, A. Oyanguren, E. Waheed, R. M. Seddon, Nicola Neri, J. W. Gary, V. Gaur, W. Panduro Vazquez, Y. Iwasaki, C. Touramanis, S. Luitz, K. R. Schubert, P. Taras, S. Hirose, D. J. Payne, E. Fioravanti, Y. Li, Y. J. Kwon, V.N. Zhilich, F. Ferrarotto, E. M. T. Puccio, G. B. Mohanty, P. L. Wang, B. Golob, T. Lueck, Roland Waldi, Biplab Dey, Peter Kodys, Fergus Wilson, M. A. Giorgi, E. Paoloni, A. Zupanc, F. De Mori, A. B. Kaliyar, P. F. Harrison, H. Kichimi, D. G. Hitlin, H. K. Moon, M. R. Convery, A. Chen, F. Bianchi, G. Piredda, O. Schneider, U. Mallik, R. Cheaib, Y. Yusa, Bingran Wang, M. Röhrken, K. Senyo, J. S. Lange, V. Santoro, W. J. Wisniewski, C. Hast, W. W. Jacobs, A. M. Eisner, I. M. Nugent, M. T. Hedges, M. Carpinelli, K. Miyabayashi, I. Badhrees, M. Posocco, B. G. Fulsom, R. F. Schwitters, G. Varner, R. Mussa, A. M. Lutz, K. T. Flood, G. Casarosa, Simon Akar, M. Takizawa, Pavel Krokovny, R. Calabrese, V. E. Blinov, A. R. Buzykaev, A. Ishikawa, G. Vasseur, Roger Barlow, Ju-Young Kim, Miriam Heß, Y. Seino, S. Bettarini, R. de Sangro, M. Nakao, M. Biasini, P. Križan, G. Raven, Alexander Bondar, D. Gamba, R. Sacco, L. Cremaldi, Yu. I. Skovpen, C. P. Shen, K. Honscheid, G. Calderini, Elisa Manoni, R. Kowalewski, N. Arnaud, V.E. Shebalin, M. Heck, L. K. Li, M. V. Purohit, S. Di Carlo, D. M. Asner, K. Hayasaka, Sw. Banerjee, Soumen Paul, M. Uchida, G. Pakhlova, P. R. Burchat, G. Karyan, V. Bhardwaj, C. L. Hsu, J. A. Ernst, S. L. Wu, P. Ongmongkolkul, H. Atmacan, D. B. Macfarlane, Alessandro Pilloni, K. K. Joo, S. Dittrich, D. R. Peimer, Kiyoshi Tanida, Timothy Gershon, D. Aston, L. Li Gioi, A. Garmash, F. Anulli, Z. Doležal, J. M. Roney, Yoshinobu Unno, S. Zakharov, M. Lubej, G. Inguglia, V. Zhukova, M. Merola, A. K. Giri, K. Sumisawa, S. M. Spanier, G. Batignani, M. Masuda, C. L. Davis, M. Fritsch, A. P. Onuchin, L. Sun, Adrian John Bevan, Somnath Choudhury, Leo Piilonen, O. Seon, Frank Simon, D. J. Lange, Matteo Rama, James G. Smith, V. P. Druzhinin, D. M. Wright, M. S. Alam, E. Solovieva, R. Prepost, N. Dash, M. Rozanska, D. Kotchetkov, T. Adye, A. Randle-Conde, T. Julius, M. Verderi, R. Faccini, V. Poireau, T. Sumiyoshi, J. M. Losecco, G. Marchiori, F. C. Porter, Martin Ritter, T. Sanuki, S. Cunliffe, J. Va'Vra, W. S. Lockman, M. Salehi, H. Aihara, George Lafferty, C. P. Jessop, T. Hara, T. Mori, Oliver Grünberg, G. R. Bonneaud, N. K. Nisar, I. Pavelkin, D. Bettoni, Z. P. Zhang, S. Prell, B. G. Pushpawela, A. Gaz, S. H. Robertson, L. Lanceri, Jyoti Prakash Biswal, B. Echenard, M. Davier, J. MacNaughton, A. M. Bakich, W. Dunwoodie, D. Červenkov, Rocky Bala Garg, T. S. Mattison, W. Gradl, E. P. Solodov, I. Garzia, Thomas Latham, C. Patrignani, V. Tisserand, and M. Bračko

Subjects
Quark, Physics, Particle physics, Unitarity, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, General Physics and Astronomy, Dalitz plot, 01 natural sciences, B-factory, KEKB, 0103 physical sciences, CP violation, 010306 general physics
Abstract

We present first evidence that the cosine of the CP-violating weak phase 2β is positive, and hence exclude trigonometric multifold solutions of the Cabibbo-Kobayashi-Maskawa (CKM) Unitarity Triangle using a time-dependent Dalitz plot analysis of B^{0}→D^{(*)}h^{0} with D→K_{S}^{0}π^{+}π^{-} decays, where h^{0}∈{π^{0},η,ω} denotes a light unflavored and neutral hadron. The measurement is performed combining the final data sets of the BABAR and Belle experiments collected at the ϒ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6}BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6}BB[over ¯] pairs recorded by the Belle detector. The results of the measurement are 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 β of the CKM Unitarity Triangle is β=[22.5±4.4(stat)±1.2(syst)±0.6(model)]°. The measurement assumes no direct CP violation in B^{0}→D^{(*)}h^{0} decays. The quoted model uncertainties are due to the composition of the D^{0}→K_{S}^{0}π^{+}π^{-} decay amplitude model, which is newly established by performing a Dalitz plot amplitude analysis using a high-statistics e^{+}e^{-}→cc[over ¯] data sample. CP violation is observed in B^{0}→D^{(*)}h^{0} decays at the level of 5.1 standard deviations. The significance for cos2β>0 is 3.7 standard deviations. The trigonometric multifold solution π/2-β=(68.1±0.7)° is excluded at the level of 7.3 standard deviations. The measurement resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle.

Published
2018

26. Observation of ϒ(2S)→γηb(1S) Decay

Author

L. E. Piilonen, D. Epifanov, B. Pal, T. V. Dong, Y. Choi, K. J. Nath, K. Kinoshita, E. Prencipe, G. Schnell, A. Garmash, T. Iijima, V.N. Zhilich, T. K. Pedlar, Y. Sakai, R. Mussa, C. P. Shen, K. Miyabayashi, I. Badhrees, H. B. Jeon, A. Ishikawa, S. Eidelman, T. Kuhr, T. Julius, M. Nakao, N. K. Nisar, V. Babu, P. Križan, T. Aushev, Soumen Paul, J. H. Yin, S. E. Vahsen, Z. P. Zhang, T. Ferber, H. Park, T. Matsuda, A. Bozek, S. Uno, G. Pakhlova, J. G. Shiu, G. Bonvicini, K. K. Joo, H. K. Moon, S. Cunliffe, R. Kulasiri, J. S. Lange, R. Pestotnik, A. Vinokurova, A. Vossen, X. L. Wang, V. Chekelian, H. Hayashii, G. B. Mohanty, Phillip Urquijo, M. Sumihama, Z. Drásal, R. Van Tonder, S. H. Kim, Eleonora Guido, Frank Simon, P. Krokovny, D. Joffe, Vladimir Popov, B. Bhuyan, Andrey Sokolov, Y. B. Li, K. Cho, V. Zhukova, M. Salehi, P. L. Wang, T. Mori, H. Aihara, Luka Santelj, V. Savinov, S. Hirose, James E. Fast, A. Zupanc, W. Sutcliffe, Jyoti Prakash Biswal, G.V. Russo, V. M. Aulchenko, M. Iwasaki, J. F. Strube, W. S. Hou, B. G. Cheon, L. Li Gioi, Shih-Chang Lee, K. Inami, E. Solovieva, H. J. Kim, Massimo Berger, V. Vorobyev, N. Dash, B. Shwartz, R. Itoh, A. Bondar, F. Tenchini, C. Z. Yuan, S. Korpar, D. Kotchetkov, T. Sumiyoshi, E. Won, Martin Ritter, T. Sanuki, A. Chen, V.E. Shebalin, H. Kichimi, S. Al Said, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, M. Niiyama, C. Schwanda, V. Gaur, R. Mizuk, K. Chilikin, C. Beleño, K. T. Kim, Yoshinobu Unno, S. K. Choi, A. K. Giri, K. Sumisawa, H. Atmacan, M. Takizawa, Z. Doležal, M. Masuda, L. Cao, Peter Kodys, W. W. Jacobs, S. Di Carlo, A. Kuzmin, S. Ogawa, U. Tamponi, S. Jia, C. H. Wang, Tara Nanut, T. Bilka, T. Uglov, M. Watanabe, T. E. Browder, H. Ye, M. Nayak, P. Pakhlov, S. Nishida, Jochen Dingfelder, Z. Natkaniec, R. Ayad, D. Y. Kim, M. Merola, H. Ono, K. Senyo, Vikas Bansal, I. Adachi, J. B. Kim, C. Van Hulse, Jasvinder A. Singh, S. Sandilya, M. Starič, M. Gelb, Tao Luo, K. Tanida, Y. Iwasaki, Y. J. Kwon, O. Schneider, J. Libby, D. M. Asner, K. Hayasaka, Linhu Li, Y. Seino, Bingran Wang, Shoichi Watanuki, D. Cinabro, A. Rabusov, M. Lubej, G. Inguglia, Somnath Choudhury, S. Pardi, S. Okuno, D. Liventsev, Vladimir Zhulanov, Y. Jin, R. Kroeger, M. E. Sevior, I. S. Lee, P. Goldenzweig, J. Haba, T. Kawasaki, M. Uchida, V. Bhardwaj, G. S. Varner, A. Rostomyan, B. G. Fulsom, C. Kiesling, M. Bračko, Rocky Bala Garg, Eberhard Widmann, D. Matvienko, A. M. Bakich, N. Gabyshev, and D. Červenkov

Subjects
Physics, Photon, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, 01 natural sciences, Measure (mathematics), law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, 010306 general physics, Collider
Abstract

We report the observation of ϒ(2S)→γηb(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb-1 of e+e- collisions at the ϒ(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure a branching fraction of B[ϒ(2S)→γηb(1S)]=(6.1-0.7-0.6+0.6+0.9)×10-4 and derive an ηb(1S) mass of 9394.8-3.1-2.7+2.7+4.5 MeV/c2, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.

Published
2018

27. Observation of an Excited Ω− Baryon

Author

M. Iwasaki, U. Tamponi, R. Ayad, B. G. Cheon, Seema Bahinipati, M. Uchida, G.V. Russo, M. Niiyama, W. S. Hou, V. Vorobyev, E. Won, A. Kuzmin, S. Jia, V. Bhardwaj, L. E. Piilonen, Vikas Bansal, D. Y. Kim, E. Nakano, P. L. Wang, G. S. Varner, T. V. Dong, Y. Choi, S. Eidelman, R. Itoh, K. J. Nath, A. B. Kaliyar, T. Matsuda, H. K. Moon, J. S. Lange, S. Pardi, S. Uno, Elisa Guido, Yu. V. Usov, A. Bondar, C. H. Wang, Y. Sakai, B. G. Fulsom, Jyoti Prakash Biswal, G. Bonvicini, R. Mizuk, G. Schnell, C. Van Hulse, S. Al Said, S. Korpar, D. Kotchetkov, I. Adachi, S. Zakharov, Soumen Paul, K. Chilikin, H. Park, A. Bozek, S. E. Vahsen, J. B. Kim, J. Haba, S. H. Kim, P. Krokovny, H. Ye, T. Julius, J. G. Shiu, H. Atmacan, B. Bhuyan, Tara Nanut, D. Cinabro, Rakesh Kumar, T. Kuhr, C. Beleño, J. F. Strube, K. K. Joo, T. A. Shibata, H. Miyata, Phillip Urquijo, G. Inguglia, K. H. Kang, K. Cho, M. Takizawa, T. Uglov, G. B. Mohanty, Y. B. Li, F. Tenchini, V. Savinov, Y. Yusa, J. T. McNeil, D. Epifanov, D. Liventsev, A. Vossen, B. Pal, R. Mussa, H. Ono, T. Sumiyoshi, John Yelton, H. B. Jeon, Vladimir Zhulanov, Y. Jin, Z. Doležal, R. Kroeger, M. E. Sevior, I. S. Lee, A. Ishikawa, S. Hirose, Somnath Choudhury, C. Schwanda, Martin Ritter, M. Nakao, Massimo Berger, T. K. Pedlar, Peter Kodys, P. Goldenzweig, J. Libby, K. T. Kim, Frank Simon, W. W. Jacobs, D. M. Asner, M. Lubej, K. Hayasaka, Vladimir Popov, T. Sanuki, P. Križan, Tao Luo, K. Tanida, T. Bilka, S. K. Choi, X. L. Wang, V. Gaur, C. Z. Yuan, K. Suzuki, A. M. Bakich, N. Dash, S. Di Carlo, Linhu Li, Andrey Sokolov, M. Merola, G. Karyan, Y. Seino, V. Chekelian, M. Watanabe, T. E. Browder, S. Cunliffe, Y. Tao, T. Mori, H. Aihara, D. Greenwald, Shoichi Watanuki, A. K. Giri, P. Pakhlov, James E. Fast, N. Gabyshev, D. Červenkov, N. K. Nisar, K. Senyo, Bingran Wang, M. Masuda, Rocky Bala Garg, S. Nishida, Eberhard Widmann, D. Matvienko, Z. P. Zhang, Z. Natkaniec, V.E. Shebalin, L. Li Gioi, G. Pakhlova, E. Solovieva, C. Kiesling, M. Bračko, A. Garmash, C. P. Shen, V. Babu, T. Aushev, V.N. Zhilich, Y. Kato, K. Miyabayashi, I. Badhrees, J. K. Ahn, Shih-Chang Lee, B. Shwartz, V. Zhukova, Dipak Kumar Sahoo, Luka Santelj, M. Sumihama, K. Inami, S. Sandilya, Z. Drásal, M. Starič, M. Gelb, H. Hayashii, M. Z. Wang, K. Kinoshita, T. Czank, Y. Iwasaki, Y. J. Kwon, O. Schneider, A. Chen, and R. Pestotnik

Subjects
Baryon, Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Excited state, 0103 physical sciences, Quark model, Hyperon, General Physics and Astronomy, 010306 general physics, Omega baryon, 01 natural sciences
Abstract

Using data recorded with the Belle detector, we observe a new excited hyperon, an Ω*- candidate decaying into Ξ0K- and Ξ-KS0 with a mass of 2012.4±0.7(stat)±0.6(syst) MeV/c2 and a width of Γ=6.4-2.0+2.5(stat)±1.6(syst) MeV. The Ω*- is seen primarily in ϒ(1S),ϒ(2S), and ϒ(3S) decays.

Published
2018

28. Search for B−→μ−ν¯μ Decays at the Belle Experiment

Author

V. Zhukova, G. Inguglia, K. Sumisawa, P. Chang, S. Nishida, E. L. Barberio, D. Liventsev, Elisa Guido, Vikas Bansal, E. Nakano, V.E. Shebalin, Vladimir Zhulanov, Y. Jin, G. Schnell, T. Iijima, C. Van Hulse, Frank Simon, Y. Choi, K. J. Nath, S. Sandilya, Liangbin Li, J. Libby, M. E. Sevior, I. S. Lee, P. Goldenzweig, M. Starič, M. Lubej, K. Hayasaka, C. H. Li, U. Tamponi, T. Kuhr, Kevin Varvell, C. L. Hsu, M. Uchida, A. M. Bakich, Dipanwita Dutta, A. Rostomyan, A. B. Kaliyar, S. Al Said, Y. Iwasaki, Y. J. Kwon, R. Ayad, Y. Seino, O. Schneider, Andrey Sokolov, H. K. Moon, Seema Bahinipati, J. S. Lange, M. T. Hedges, Shoichi Watanuki, Z. Drásal, V. Chekelian, T. Mori, H. Aihara, D. Greenwald, A. Kuzmin, M. Nayak, Soumen Paul, S. Okuno, G. S. Varner, Yongsun Kim, A. Zupanc, C. H. Wang, S. Uno, C. Schwanda, T. Luo, S. Ogawa, James E. Fast, I. Jaegle, N. K. Nisar, J. Haba, N. Gabyshev, D. Červenkov, D. Y. Kim, Peter Kodys, R. Itoh, W. W. Jacobs, M. Merola, V. Gaur, A.L. Sibidanov, W. S. Hou, P. Pakhlov, S. Eidelman, Z. P. Zhang, B. Pal, Tara Nanut, K. K. Joo, Y. Guan, T. Uglov, B. G. Fulsom, Eberhard Widmann, K. Tanida, K. Senyo, J. Stypula, V. Vorobyev, Sadaharu Uehara, D. M. Asner, S. Di Carlo, E. Solovieva, G. Pakhlova, M. Watanabe, T. E. Browder, R. Mussa, C. Z. Yuan, Z. Natkaniec, M. Salehi, H. B. Jeon, G. B. Mohanty, A. Ishikawa, N. Dash, Y. Yamashita, Iki Adachi, G. Karyan, M. Nakao, H. Park, C. W. Park, A. Bozek, P. Križan, H. Ye, Jyoti Prakash Biswal, L. E. Piilonen, M. Rozanska, P. L. Wang, Y. Yusa, V.N. Zhilich, Meng Wang, E. Won, K. Chilikin, B. Bhuyan, J. B. Kim, Yuki Sato, T. Julius, K. Miyabayashi, I. Badhrees, R. Pestotnik, R. Kulasiri, C. Kiesling, V. Savinov, M. Sumihama, F. Tenchini, Yoshinobu Unno, T. Sumiyoshi, M. Takizawa, H. Ono, M. Bračko, L. Li Gioi, R. Mizuk, Martin Ritter, John Yelton, M. Masuda, A. Garmash, C. S. Park, S. Hirose, A. Chen, Z. Doležal, S. K. Choi, K. Trabelsi, J. Kahn, C. P. Shen, V. Babu, T. Aushev, T. Ferber, M. Niiyama, T. Matsuda, K. Inami, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, J. F. Strube, Y. Sakai, H. Hayashii, M. Iwasaki, B. G. Cheon, S. H. Kim, P. Krokovny, K. Kinoshita, T. Czank, Rakesh Kumar, K. H. Kang, K. Cho, S. Korpar, D. Epifanov, D. Kotchetkov, J. G. Shiu, T. Kawasaki, T. K. Pedlar, Phillip Urquijo, and D. Cinabro

Subjects
Physics, Particle physics, Muon, Missing energy, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, General Physics and Astronomy, 01 natural sciences, Belle experiment, KEKB, 0103 physical sciences, High Energy Physics::Experiment, Neutrino, 010306 general physics, Bar (unit)
Abstract

We report the results of a search for the rare, purely leptonic decay B- -> mu(-)(nu) over bar (mu) performed with a 711 fb(-1) data sample that contains 772 x 10(6) B (B) over bar pairs, collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B- -> mu(-)(nu) over bar (mu)) = (6.46 +/- 2.22 +/- 1.60) x 10(-7) or a frequentist 90% confidence level interval on the B- -> mu(-)(nu) over bar (mu) branching fraction of [2.9, 10.7] x 10(-7).

Published
2018

29. Search for B^{-}→μ^{-}ν[over ¯]_{μ} Decays at the Belle Experiment

Author

A, Sibidanov, K E, Varvell, I, Adachi, H, Aihara, S, Al Said, D M, Asner, T, Aushev, R, Ayad, V, Babu, I, Badhrees, S, Bahinipati, A M, Bakich, V, Bansal, E, Barberio, P, Behera, B, Bhuyan, J, Biswal, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, P, Chang, V, Chekelian, A, Chen, B G, Cheon, K, Chilikin, K, Cho, S-K, Choi, Y, Choi, D, Cinabro, T, Czank, N, Dash, S, Di Carlo, Z, Doležal, Z, Drásal, D, Dutta, S, Eidelman, D, Epifanov, J E, Fast, T, Ferber, B G, Fulsom, V, Gaur, N, Gabyshev, A, Garmash, P, Goldenzweig, D, Greenwald, Y, Guan, E, Guido, J, Haba, K, Hayasaka, H, Hayashii, M T, Hedges, S, Hirose, W-S, Hou, C-L, Hsu, T, Iijima, K, Inami, G, Inguglia, A, Ishikawa, R, Itoh, M, Iwasaki, Y, Iwasaki, W W, Jacobs, I, Jaegle, H B, Jeon, Y, Jin, K K, Joo, T, Julius, J, Kahn, A B, Kaliyar, K H, Kang, G, Karyan, T, Kawasaki, C, Kiesling, D Y, Kim, J B, Kim, S H, Kim, Y J, Kim, K, Kinoshita, P, Kodyš, S, Korpar, D, Kotchetkov, P, Križan, P, Krokovny, T, Kuhr, R, Kulasiri, R, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, I S, Lee, C H, Li, L, Li, L, Li Gioi, J, Libby, D, Liventsev, M, Lubej, T, Luo, M, Masuda, T, Matsuda, M, Merola, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, H K, Moon, T, Mori, R, Mussa, E, Nakano, M, Nakao, T, Nanut, K J, Nath, Z, Natkaniec, M, Nayak, M, Niiyama, N K, Nisar, S, Nishida, S, Ogawa, S, Okuno, H, Ono, P, Pakhlov, G, Pakhlova, B, Pal, C-S, Park, C W, Park, H, Park, S, Paul, T K, Pedlar, R, Pestotnik, L E, Piilonen, M, Ritter, A, Rostomyan, M, Rozanska, Y, Sakai, M, Salehi, S, Sandilya, Y, Sato, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, Y, Seino, K, Senyo, M E, Sevior, V, Shebalin, C P, Shen, T-A, Shibata, J-G, Shiu, F, Simon, A, Sokolov, E, Solovieva, M, Starič, J F, Strube, J, Stypula, M, Sumihama, K, Sumisawa, T, Sumiyoshi, M, Takizawa, U, Tamponi, K, Tanida, F, Tenchini, K, Trabelsi, M, Uchida, S, Uehara, T, Uglov, Y, Unno, S, Uno, P, Urquijo, C, Van Hulse, G, Varner, V, Vorobyev, C H, Wang, M-Z, Wang, P, Wang, M, Watanabe, S, Watanuki, E, Widmann, E, Won, Y, Yamashita, H, Ye, J, Yelton, C Z, Yuan, Y, Yusa, Z P, Zhang, V, Zhilich, V, Zhukova, V, Zhulanov, and A, Zupanc

Abstract

We report the results of a search for the rare, purely leptonic decay B^{-}→μ^{-}ν[over ¯]_{μ} performed with a 711 fb^{-1} data sample that contains 772×10^{6} BB[over ¯] pairs, collected near the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B^{-}→μ^{-}ν[over ¯]_{μ})=(6.46±2.22±1.60)×10^{-7} or a frequentist 90% confidence level interval on the B^{-}→μ^{-}ν[over ¯]_{μ} branching fraction of [2.9,10.7]×10^{-7}.

Published
2018

30. Evidence for Isospin Violation and Measurement of CP Asymmetries in B→K*(892)γ

Author

D. Liventsev, Vladimir Zhulanov, Y. Jin, M. E. Sevior, P. Goldenzweig, B. G. Cheon, Tsuyoshi Horiguchi, L. E. Piilonen, K. Tanida, J. Haba, K. T. Kim, Y. Choi, K. J. Nath, R. Gillard, C. Pulvermacher, T. E. Browder, R. Itoh, T. Matsuda, S. Uno, M. T. Hedges, J. Libby, Takeo Higuchi, M. Lubej, K. Hayasaka, C. H. Li, G. Bonvicini, Elisa Guido, Y. Yamashita, Z. Drásal, S. Eidelman, A. Vinokurova, S. Korpar, G. Schnell, T. Iijima, D. Kotchetkov, Y. Sakai, V. Gaur, H. Ye, Y. Watanabe, S. H. Kim, P. Krokovny, Rakesh Kumar, Y. Iwasaki, Jyoti Prakash Biswal, T. Julius, W. S. Hou, R. Mussa, K. H. Kang, K. Cho, T. Kuhr, H. B. Jeon, Y. Seino, K. Prasanth, Y. J. Kwon, H. Park, A. Bozek, A. Ishikawa, M. Z. Wang, D. Epifanov, K. Kinoshita, T. A. Shibata, A. Zupanc, O. Schneider, H. Miyata, M. Nakao, T. Czank, Peter Kodys, Prafulla Kumar Behera, P. Križan, W. W. Jacobs, T. K. Pedlar, V. Vorobyev, T. Weber, Soumen Paul, V.N. Zhilich, Eberhard Widmann, B. Pal, Victoria Zhukova, A. Bobrov, S. Al Said, A. Chen, D. Matvienko, Saraju P. Mohanty, J. G. Shiu, K. Miyabayashi, I. Badhrees, M. Uchida, Liangbin Li, A. Rostomyan, Phillip Urquijo, V. Chekelian, S. Di Carlo, R. Pestotnik, V. Bhardwaj, B. Bhuyan, G. S. Varner, J. Rauch, T. Luo, V. M. Aulchenko, S. Watanuki, V. Savinov, F. Tenchini, A. M. Bakich, A. Vossen, Yu. V. Usov, R. Kulasiri, B. G. Fulsom, K. Sumisawa, T. Sumiyoshi, U. Tamponi, Frank Simon, A. J. Schwartz, N. Gabyshev, D. Červenkov, D. Cinabro, T. Hara, M. Masuda, T. Mori, H. Aihara, G. Inguglia, Ihn Sik Seong, S. Jia, T. Kawasaki, S. Hirose, N. Dash, J. F. Strube, C. H. Wang, H. Farhat, H. Hayashii, Luka Santelj, S. Pardi, S. Okuno, K. Inami, G. B. Mohanty, N. K. Nisar, D. Joffe, Y. Guan, Z. P. Zhang, Y. Ushiroda, M. Bračko, L. Li Gioi, K. K. Joo, E. Won, M. Takizawa, V. Babu, T. Aushev, G. Pakhlova, Z. Doležal, Hitoshi Yamamoto, T. Ferber, I. Adachi, I. Jaegle, B. Golob, M. Merola, H. K. Moon, A. Garmash, J. S. Lange, C. S. Park, M. Nayak, K. Senyo, Vikas Bansal, J. B. Kim, E. Nakano, C. Van Hulse, P. Pakhlov, Dipanwita Dutta, K. Trabelsi, C. P. Shen, Yongsun Kim, C. Schwanda, V.E. Shebalin, D. M. Asner, P. L. Wang, Andrey Sokolov, James E. Fast, R. Mizuk, K. Chilikin, S. Nishida, Yoshinobu Unno, Z. Natkaniec, T. Uglov, S. Sandilya, M. J. Kim, M. Starič, M. Gelb, T. Kumita, E. Solovieva, H. Ono, T. Nanut, A. Kuzmin, S. Ogawa, R. Ayad, and D. Y. Kim

Subjects
Physics, Particle physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, Sigma, 01 natural sciences, Nuclear physics, KEKB, Isospin, 0103 physical sciences, CP violation, B meson, 010306 general physics
Abstract

We report the first evidence for isospin violation in B -> K*gamma and the first measurement of the difference of CP asymmetries between B+->.K*(+)gamma and B-0 -> K-*0 gamma. This analysis is based on the data sample containing 772 x 10(6)BB pairs that was collected with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We find evidence for the isospin violation with a significance of 3.1 sigma, Delta(0+) = [+6.2 +/- 1.5(stat) +/- 0.6(syst) +/- 1.2(f (+-)/f(00))] %, where the third uncertainty is due to the uncertainty on the fraction of B+B- to (BB0)-B-0 production in gamma(4S) decays. The measured value is consistent with predictions of the standard model. The result for the difference of CP asymmetries is Delta A(CP) = [+2.4 +/- 2.8(stat) +/- 0.5(syst)] %, consistent with zero. The measured branching fractions and CP asymmetries for charged and neutral B meson decays are the most precise to date. We also calculate the ratio of branching fractions of B-0 -> K-*0 gamma to B-s(0) -> phi gamma.

Published
2017

31. Search for CP Violation and Measurement of the Branching Fraction in the Decay D0→KS0KS0

Author

S. Al Said, K. Sumisawa, Andrey Sokolov, Saraju P. Mohanty, M. Masuda, M. T. Hedges, Yongsun Kim, C. Schwanda, Luka Santelj, Liangbin Li, S. Eidelman, V. Chekelian, M. C. Chang, T. A. Shibata, D. Epifanov, H. Park, A. Bozek, H. Miyata, M. Uchida, B. Bhuyan, Yuki Sato, V. Savinov, R. Mizuk, Victoria Zhukova, V. Bhardwaj, N. K. Nisar, L. E. Piilonen, P. Katrenko, A. Zupanc, A. J. Schwartz, James E. Fast, A. Bobrov, H. Ono, K. M. Williams, K. Inami, Yang Li, Y. Choi, K. J. Nath, A. Chen, T. K. Pedlar, V. Babu, G. Schnell, T. Iijima, E. Won, G. S. Varner, T. Luo, A. Rostomyan, Yu. V. Usov, Z. P. Zhang, Y. Iwasaki, T. Julius, J. G. Shiu, T. Kuhr, K. Chilikin, M. Merola, B. Pal, C. Kiesling, M. Niiyama, L. Pesántez, T. Aushev, Y. Yook, Y. Sakai, Y. J. Kwon, T. Ferber, M. Z. Wang, K. Kinoshita, B. G. Fulsom, S. Uno, V.E. Shebalin, D. M. Asner, G. Pakhlova, Y. Unno, Peter Kodys, W. W. Jacobs, J. Stypula, L. Li Gioi, A. Garmash, C. S. Park, G. Bonvicini, F. Tenchini, G. B. Mohanty, O. Schneider, R. Ayad, Seema Bahinipati, S. Di Carlo, Y. Yusa, K. Senyo, T. Sumiyoshi, M. Bračko, C. Z. Yuan, V.N. Zhilich, G. Karyan, Phillip Urquijo, Jyoti Prakash Biswal, R. Pestotnik, Vikas Bansal, D. Joffe, A. B. Kaliyar, H. K. Moon, Martin Ritter, J. S. Lange, P. L. Wang, S. H. Kim, P. Krokovny, E. Nakano, T. Sanuki, Rakesh Kumar, V. Gaur, D. Y. Kim, Z. Drásal, K. Cho, Soumen Paul, W. S. Hou, J. F. Strube, K. Trabelsi, J. Kahn, I. Jaegle, K. Miyabayashi, I. Badhrees, C. P. Shen, C. Van Hulse, R. Mussa, A. M. Bakich, H. Hayashii, H. B. Jeon, I. Adachi, V. Vorobyev, K. K. Joo, A. Ishikawa, M. Nakao, F. Breibeck, S. Sandilya, P. Križan, Dipanwita Dutta, J. B. Kim, H. J. Kim, T. Kawasaki, M. J. Kim, H. Farhat, B. G. Cheon, N. Gabyshev, D. Červenkov, M. Starič, T. Kumita, R. Itoh, Eberhard Widmann, A. Bondar, S. Korpar, D. Matvienko, D. Kotchetkov, T. Hara, T. Mori, H. Aihara, V. M. Aulchenko, E. L. Barberio, R. Kulasiri, M. Takizawa, Y. Watanabe, B. Shwartz, John Yelton, Z. Doležal, K. T. Kim, R. Gillard, J. Libby, K. Hayasaka, C. H. Li, Y. Seino, D. Cinabro, M. Lubej, S. Pardi, S. Okuno, M. Watanabe, T. E. Browder, U. Tamponi, C. H. Wang, Y. Yamashita, H. Ye, K. Prasanth, H. Sahoo, Tara Nanut, T. Uglov, A. Kuzmin, S. Ogawa, E. Waheed, S. Nishida, N. Dash, Z. Natkaniec, K. Tanida, M. Nayak, P. Pakhlov, J. Haba, D. Liventsev, Vladimir Zhulanov, Y. Jin, M. E. Sevior, I. S. Lee, P. Goldenzweig, E. Solovieva, A. Vossen, and Frank Simon

Subjects
Physics, 010308 nuclear & particles physics, Branching fraction, media_common.quotation_subject, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy, 01 natural sciences, Asymmetry, law.invention, Standard Model, KEKB, law, 0103 physical sciences, CP violation, 010306 general physics, Collider, media_common
Abstract

We report a study of the decay D-0 -> (KSKS0)-K-0 using 921 fb(-1) of data collected at or near the (sic)(4S) and (sic)(5S) resonances with the Belle detector at the KEKB asymmetric energy e(+)e(-) collider. The measured time-integrated CP asymmetry is A(CP)(D-0 -> (KSKS0)-K-0) = (-0.02 +/- 1.53 +/- 0.02 +/- 0.17)%, and the branching fraction is B(D-0 -> (KSKS0)-K-0) = (1.321 +/- 0.023 +/- 0.036 +/- 0.044) x 10(-4), where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D-0 -> K-S(0)pi(0)). These results are significantly more precise than previous measurements available for this mode. The A(CP) measurement is consistent with the standard model expectation.

Published
2017

32. Evidence for Isospin Violation and Measurement of CP Asymmetries in B→K^{*}(892)γ

Author

T, Horiguchi, A, Ishikawa, H, Yamamoto, I, Adachi, H, Aihara, S, Al Said, D M, Asner, V, Aulchenko, T, Aushev, R, Ayad, V, Babu, I, Badhrees, A M, Bakich, V, Bansal, P, Behera, V, Bhardwaj, B, Bhuyan, J, Biswal, A, Bobrov, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, V, Chekelian, A, Chen, B G, Cheon, K, Chilikin, K, Cho, Y, Choi, D, Cinabro, T, Czank, N, Dash, S, Di Carlo, Z, Doležal, Z, Drásal, D, Dutta, S, Eidelman, D, Epifanov, H, Farhat, J E, Fast, T, Ferber, B G, Fulsom, V, Gaur, N, Gabyshev, A, Garmash, M, Gelb, R, Gillard, P, Goldenzweig, B, Golob, Y, Guan, E, Guido, J, Haba, T, Hara, K, Hayasaka, H, Hayashii, M T, Hedges, T, Higuchi, S, Hirose, W-S, Hou, T, Iijima, K, Inami, G, Inguglia, R, Itoh, Y, Iwasaki, W W, Jacobs, I, Jaegle, H B, Jeon, S, Jia, Y, Jin, D, Joffe, K K, Joo, T, Julius, K H, Kang, T, Kawasaki, D Y, Kim, J B, Kim, K T, Kim, M J, Kim, S H, Kim, Y J, Kim, K, Kinoshita, P, Kodyš, S, Korpar, D, Kotchetkov, P, Križan, P, Krokovny, T, Kuhr, R, Kulasiri, R, Kumar, T, Kumita, A, Kuzmin, Y-J, Kwon, J S, Lange, C H, Li, L, Li, L, Li Gioi, J, Libby, D, Liventsev, M, Lubej, T, Luo, M, Masuda, T, Matsuda, D, Matvienko, M, Merola, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, S, Mohanty, H K, Moon, T, Mori, R, Mussa, E, Nakano, M, Nakao, T, Nanut, K J, Nath, Z, Natkaniec, M, Nayak, N K, Nisar, S, Nishida, S, Ogawa, S, Okuno, H, Ono, P, Pakhlov, G, Pakhlova, B, Pal, S, Pardi, C-S, Park, H, Park, S, Paul, T K, Pedlar, R, Pestotnik, L E, Piilonen, K, Prasanth, C, Pulvermacher, J, Rauch, A, Rostomyan, Y, Sakai, S, Sandilya, L, Santelj, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, A J, Schwartz, Y, Seino, K, Senyo, I S, Seong, M E, Sevior, V, Shebalin, C P, Shen, T-A, Shibata, J-G, Shiu, F, Simon, A, Sokolov, E, Solovieva, M, Starič, J F, Strube, K, Sumisawa, T, Sumiyoshi, M, Takizawa, U, Tamponi, K, Tanida, F, Tenchini, K, Trabelsi, M, Uchida, T, Uglov, Y, Unno, S, Uno, P, Urquijo, Y, Ushiroda, Y, Usov, C, Van Hulse, G, Varner, A, Vinokurova, V, Vorobyev, A, Vossen, C H, Wang, M-Z, Wang, P, Wang, Y, Watanabe, S, Watanuki, T, Weber, E, Widmann, E, Won, Y, Yamashita, H, Ye, Z P, Zhang, V, Zhilich, V, Zhukova, V, Zhulanov, and A, Zupanc

Abstract

We report the first evidence for isospin violation in B→K^{*}γ and the first measurement of the difference of CP asymmetries between B^{+}→K^{*+}γ and B^{0}→K^{*0}γ. This analysis is based on the data sample containing 772×10^{6}BB[over ¯] pairs that was collected with the Belle detector at the KEKB energy-asymmetric e^{+}e^{-} collider. We find evidence for the isospin violation with a significance of 3.1σ, Δ_{0+}=[+6.2±1.5(stat)±0.6(syst)±1.2(f_{+-}/f_{00})]%, where the third uncertainty is due to the uncertainty on the fraction of B^{+}B^{-} to B^{0}B[over ¯]^{0} production in ϒ(4S) decays. The measured value is consistent with predictions of the standard model. The result for the difference of CP asymmetries is ΔA_{CP}=[+2.4±2.8(stat)±0.5(syst)]%, consistent with zero. The measured branching fractions and CP asymmetries for charged and neutral B meson decays are the most precise to date. We also calculate the ratio of branching fractions of B^{0}→K^{*0}γ to B_{s}^{0}→ϕγ.

Published
2017

33. Measurement of the τ Lepton Polarization and R(D*) in the Decay B¯→D*τ−ν¯τ

Author

J. G. Shiu, H. Farhat, S. Okuno, Phillip Urquijo, Kevin Varvell, L. E. Piilonen, D. Dutta, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, Y. Choi, Y. Ushiroda, K. K. Joo, E. Won, Liangbin Li, A. Rostomyan, J. Libby, M. Niiyama, L. Pesántez, K. Trabelsi, T. Mori, H. Aihara, D. Greenwald, Vikas Bansal, I. Adachi, M. Lubej, K. Hayasaka, C. H. Li, C. P. Shen, C. L. Hsu, Soumen Paul, Peter Kodys, W. W. Jacobs, T. Julius, J. Grygier, V. Babu, G. Schnell, T. Iijima, M. Takizawa, T. Aushev, Y. Seino, B. G. Cheon, D. Epifanov, C. Van Hulse, T. Ferber, N. K. Nisar, Y. Iwasaki, Y. J. Kwon, John Yelton, R. Itoh, D. M. Asner, S. Eidelman, S. Di Carlo, A. Bondar, Z. Doležal, S. Nishida, T. Kuhr, A. Vossen, O. Schneider, T. Schlüter, O. Seon, Frank Simon, D. Cinabro, A. Zupanc, S. Korpar, D. Kotchetkov, R. Mizuk, V.N. Zhilich, K. Chilikin, Z. P. Zhang, A. Chen, G. Inguglia, Mikhail Danilov, M. Watanabe, H. Park, Jochen Dingfelder, Z. Drásal, T. E. Browder, S. Ogawa, K. Miyabayashi, I. Badhrees, Z. Natkaniec, B. Golob, S. Sandilya, M. J. Kim, R. Ayad, W. Ostrowicz, U. Tamponi, H. K. Moon, A. Bozek, P. Chang, G. Pakhlova, Yoshinobu Unno, B. Pal, Massimo Berger, J. S. Lange, P. L. Wang, M. Starič, F. Tenchini, T. Sumiyoshi, B. Bhuyan, K. Sumisawa, Jyoti Prakash Biswal, Meng Wang, C. Z. Yuan, H. Miyake, D. Y. Kim, I. Jaegle, T. Matsuda, S. Uno, Martin Ritter, K. Adamczyk, V.E. Shebalin, Yuki Sato, C. H. Wang, T. Sanuki, V. Gaur, E. Solovieva, K. T. Kim, Y. Yamashita, R. Chistov, M. Masuda, N. Dash, V. Savinov, D. Joffe, H. Kichimi, S. Al Said, R. Kumar, H. Ye, H. Ono, W. S. Hou, T. Kawasaki, S. Hirose, M. Rozanska, G. Bonvicini, Junho Kim, K. Prasanth, K. Senyo, M. Uchida, Kazuhiko Hara, M. Nayak, Yang Li, R. Pestotnik, K. J. Nath, P. Pakhlov, H. Atmacan, G. S. Varner, T. Luo, C. Schwanda, Y. Sakai, Takeo Higuchi, S. H. Kim, P. Krokovny, Yu. V. Usov, B. G. Fulsom, L. Li Gioi, A. Garmash, K. Cho, Y. Kato, T. Nanut, R. Mussa, A. Ishikawa, M. Nakao, C. W. Park, P. Križan, Andrey Sokolov, James E. Fast, T. Uglov, K. Kinoshita, Luka Santelj, K. Inami, R. Kulasiri, J. F. Strube, H. Hayashii, J. Haba, Y. Onuki, J. Hasenbusch, V. M. Aulchenko, G. B. Mohanty, E. L. Barberio, D. Liventsev, Vladimir Zhulanov, Y. Jin, M. E. Sevior, P. Goldenzweig, Y. Watanabe, A. M. Bakich, J. MacNaughton, N. Gabyshev, D. Červenkov, Eberhard Widmann, D. Matvienko, C. Kiesling, and M. Bračko

Subjects
Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, General Physics and Astronomy, Elementary particle, Electron, 01 natural sciences, Positron, KEKB, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract

We report the first measurement of the tau lepton polarization P-tau(D*) in the decay (B) over bar -> D* tau(-) (v) over bar (tau) as well as a newmeasurement of the ratio of the branching fractions R(D*) = B((B) over bar -> D* tau(-) (v) over bar (tau)) / B((B) over bar -> D* l(-) (v) over bar (l)), where l(-) denotes an electron or a muon, and the tau is reconstructed in the modes tau(-) -> pi(-) v(tau) and tau(-) -> rho(-) v(tau). We use the full data sample of 772 x 10(6) B (B) over bar pairs recorded with the Belle detector at the (KEKB) over bar electron-positron collider. Our results, P-tau(D*) = -0.38 +/- 0.51 (stat)(-0.16)(+0.21) (syst) and R(D*) = 0.270 +/- 0.035 (stat)(- 0.025)(+0.028) (syst), are consistent with the theoretical predictions of the standard model.

Published
2017

34. Observation of D0→ρ0γ and Search for CP Violation in Radiative Charm Decays

Author

A. Ishikawa, A. Garmash, C. S. Park, M. Nakao, C. W. Park, Marko Petrič, Jyoti Prakash Biswal, A. M. Bakich, A. Bondar, S. Korpar, I. Jaegle, Yang Li, V.N. Zhilich, Y. Choi, K. J. Nath, M. Nayak, J. Rauch, V. Gaur, J. Libby, J. G. Shiu, M. Lubej, K. Hayasaka, C. H. Li, K. T. Kim, K. Miyabayashi, I. Badhrees, K. Trabelsi, K. Senyo, Semen Eidelman, M. Masuda, C. P. Shen, Luka Santelj, C. Pulvermacher, F. Tenchini, S. Sandilya, V. Babu, T. Aushev, N. K. Nisar, T. E. Browder, H. Park, A. Bozek, M. J. Kim, T. Ferber, R. Gillard, B. G. Cheon, Y. Sakai, Y. Seino, S. K. Choi, G. Schnell, T. Iijima, N. Gabyshev, D. Červenkov, T. Sumiyoshi, Victoria Zhukova, Martin Ritter, A. Vossen, O. Seon, R. Ayad, Y. Yamashita, M. Uchida, L. Li Gioi, S. Okuno, A. Chen, V. Bhardwaj, A. Kuzmin, J.E. Fast, T. K. Pedlar, M. Starič, T. Sanuki, S. Ogawa, T. Kuhr, Soumen Paul, R. Kulasiri, D. Liventsev, Vladimir Zhulanov, N. Dash, M. E. Sevior, I. S. Lee, P. Goldenzweig, T. Matsuda, S. Al Said, D. Y. Kim, S. Uno, A. B. Kaliyar, M. Bračko, G. S. Varner, D. Cinabro, K. Prasanth, H. K. Moon, A. Vinokurova, Eberhard Widmann, T. Nanut, Liangbin Li, Peter Kodys, W. W. Jacobs, J. S. Lange, D. Matvienko, G. Inguglia, S. H. Kim, V. M. Aulchenko, U. Tamponi, A. Rostomyan, R. Pestotnik, Y. Ushiroda, K. H. Kang, K. Cho, L. Pesántez, Samo Stanič, S. Di Carlo, A. Zupanc, J. Yamaoka, M. Takizawa, G. B. Mohanty, V. Chekelian, Y. J. Kwon, B. G. Fulsom, E. Solovieva, Y. Watanabe, K. Inami, R. Mizuk, L. E. Piilonen, I. Adachi, O. Schneider, B. Shwartz, C. H. Wang, John Yelton, Z. Doležal, J. B. Kim, B. Pal, C. Schwanda, W. S. Hou, T. Julius, D. Joffe, Hiroaki Aihara, J. Stypula, T. A. Shibata, J. F. Strube, Z. P. Zhang, H. Miyata, Prafulla Kumar Behera, Y. Iwasaki, V. Vorobyev, H. Hayashii, T. Kawasaki, Yuki Sato, P. Krokovny, R. Chistov, K. Kinoshita, V. Savinov, V.E. Shebalin, K. K. Joo, E. Won, Vikas Bansal, D. M. Asner, T. Schlüter, Dipanwita Dutta, P. L. Wang, Meng Wang, P. Pakhlov, H. Farhat, B. Golob, S. Nishida, A. J. Schwartz, and G. Pakhlova

Subjects
Physics, Particle physics, KEKB, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Radiative transfer, General Physics and Astronomy, CP violation, 010306 general physics, 01 natural sciences
Abstract

We report the first observation of the radiative charm decay D-0 -> rho(0)gamma and the first search for CP violation in decays D-0 -> rho(0)gamma, phi gamma, and (K) over bar (*0)(892)gamma, using a data sample of 943 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The branching fraction is measured to be B(D-0 -> rho(0)gamma) = (1.77 +/- 0.30 +/- 0.07) x 10(-5), where the first uncertainty is statistical and the second is systematic. The obtained CP asymmetries A(CP)(D-0 ->rho(0)gamma) = +0.056 +/- 0.152 +/- 0.006, A(CP)(D-0 -> phi gamma) = -0.094 +/- 0.066 +/- 0.001, and A(CP)(D-0 -> (K) over bar (*0) gamma = -0.003 +/- 0.020 +/- 0.000 are consistent with no CP violation. We also present an improved measurement of the branching fractions B(D-0 -> phi gamma) = (2.76 +/- 0.19 +/- 0.10) x 10(-5) and B(D-0 -> (K) over bar (*0) gamma = (4.66 +/- 0.21 +/- 0.21) x 10(-4).

Published
2017

35. Measurement of the τ Lepton Polarization and R(D^{*}) in the Decay B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ}

Author

S, Hirose, T, Iijima, I, Adachi, K, Adamczyk, H, Aihara, S, Al Said, D M, Asner, H, Atmacan, V, Aulchenko, T, Aushev, R, Ayad, V, Babu, I, Badhrees, A M, Bakich, V, Bansal, E, Barberio, P, Behera, M, Berger, B, Bhuyan, J, Biswal, A, Bondar, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, P, Chang, A, Chen, B G, Cheon, K, Chilikin, R, Chistov, K, Cho, Y, Choi, D, Cinabro, M, Danilov, N, Dash, S, Di Carlo, J, Dingfelder, Z, Doležal, Z, Drásal, D, Dutta, S, Eidelman, D, Epifanov, H, Farhat, J E, Fast, T, Ferber, B G, Fulsom, V, Gaur, N, Gabyshev, A, Garmash, P, Goldenzweig, B, Golob, D, Greenwald, J, Grygier, J, Haba, K, Hara, J, Hasenbusch, K, Hayasaka, H, Hayashii, T, Higuchi, W-S, Hou, C-L, Hsu, K, Inami, G, Inguglia, A, Ishikawa, R, Itoh, Y, Iwasaki, W W, Jacobs, I, Jaegle, Y, Jin, D, Joffe, K K, Joo, T, Julius, Y, Kato, T, Kawasaki, H, Kichimi, C, Kiesling, D Y, Kim, J B, Kim, K T, Kim, M J, Kim, S H, Kim, K, Kinoshita, P, Kodyš, S, Korpar, D, Kotchetkov, P, Križan, P, Krokovny, T, Kuhr, R, Kulasiri, R, Kumar, Y-J, Kwon, J S, Lange, C H, Li, L, Li, Y, Li, L, Li Gioi, J, Libby, D, Liventsev, M, Lubej, T, Luo, J, MacNaughton, M, Masuda, T, Matsuda, D, Matvienko, K, Miyabayashi, H, Miyake, H, Miyata, R, Mizuk, G B, Mohanty, H K, Moon, T, Mori, R, Mussa, M, Nakao, T, Nanut, K J, Nath, Z, Natkaniec, M, Nayak, M, Niiyama, N K, Nisar, S, Nishida, S, Ogawa, S, Okuno, H, Ono, Y, Onuki, W, Ostrowicz, P, Pakhlov, G, Pakhlova, B, Pal, C W, Park, H, Park, S, Paul, L, Pesántez, R, Pestotnik, L E, Piilonen, K, Prasanth, M, Ritter, A, Rostomyan, M, Rozanska, Y, Sakai, S, Sandilya, L, Santelj, T, Sanuki, Y, Sato, V, Savinov, T, Schlüter, O, Schneider, G, Schnell, C, Schwanda, Y, Seino, K, Senyo, O, Seon, M E, Sevior, V, Shebalin, C P, Shen, T-A, Shibata, J-G, Shiu, F, Simon, A, Sokolov, E, Solovieva, M, Starič, J F, Strube, K, Sumisawa, T, Sumiyoshi, M, Takizawa, U, Tamponi, F, Tenchini, K, Trabelsi, M, Uchida, T, Uglov, Y, Unno, S, Uno, P, Urquijo, Y, Ushiroda, Y, Usov, C, Van Hulse, G, Varner, K E, Varvell, A, Vossen, C H, Wang, M-Z, Wang, P, Wang, M, Watanabe, Y, Watanabe, E, Widmann, E, Won, Y, Yamashita, H, Ye, J, Yelton, C Z, Yuan, Z P, Zhang, V, Zhilich, V, Zhulanov, and A, Zupanc

Abstract

We report the first measurement of the τ lepton polarization P_{τ}(D^{*}) in the decay B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ} as well as a new measurement of the ratio of the branching fractions R(D^{*})=B(B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]→D^{*}ℓ^{-}ν[over ¯]_{ℓ}), where ℓ^{-} denotes an electron or a muon, and the τ is reconstructed in the modes τ^{-}→π^{-}ν_{τ} and τ^{-}→ρ^{-}ν_{τ}. We use the full data sample of 772×10^{6} BB[over ¯] pairs recorded with the Belle detector at the KEKB electron-positron collider. Our results, P_{τ}(D^{*})=-0.38±0.51(stat)_{-0.16}^{+0.21}(syst) and R(D^{*})=0.270±0.035(stat)_{-0.025}^{+0.028}(syst), are consistent with the theoretical predictions of the standard model.

Published
2016

36. Observation of D^{0}→ρ^{0}γ and Search for CP Violation in Radiative Charm Decays

Author

T, Nanut, A, Zupanc, I, Adachi, H, Aihara, S, Al Said, D M, Asner, V, Aulchenko, T, Aushev, R, Ayad, V, Babu, I, Badhrees, A M, Bakich, V, Bansal, P, Behera, V, Bhardwaj, J, Biswal, A, Bondar, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, V, Chekelian, A, Chen, B G, Cheon, R, Chistov, K, Cho, S-K, Choi, Y, Choi, D, Cinabro, N, Dash, S, Di Carlo, Z, Doležal, D, Dutta, S, Eidelman, H, Farhat, J E, Fast, T, Ferber, B G, Fulsom, V, Gaur, N, Gabyshev, A, Garmash, R, Gillard, P, Goldenzweig, B, Golob, K, Hayasaka, H, Hayashii, W-S, Hou, T, Iijima, K, Inami, G, Inguglia, A, Ishikawa, Y, Iwasaki, W W, Jacobs, I, Jaegle, D, Joffe, K K, Joo, T, Julius, A B, Kaliyar, K H, Kang, T, Kawasaki, D Y, Kim, J B, Kim, K T, Kim, M J, Kim, S H, Kim, K, Kinoshita, P, Kodyš, S, Korpar, P, Krokovny, T, Kuhr, R, Kulasiri, A, Kuzmin, Y-J, Kwon, J S, Lange, I S, Lee, C H, Li, L, Li, Y, Li, L, Li Gioi, J, Libby, D, Liventsev, M, Lubej, M, Masuda, T, Matsuda, D, Matvienko, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, H K, Moon, M, Nakao, K J, Nath, M, Nayak, N K, Nisar, S, Nishida, S, Ogawa, S, Okuno, P, Pakhlov, G, Pakhlova, B, Pal, C-S, Park, C W, Park, H, Park, S, Paul, T K, Pedlar, L, Pesántez, R, Pestotnik, M, Petrič, L E, Piilonen, K, Prasanth, C, Pulvermacher, J, Rauch, M, Ritter, A, Rostomyan, Y, Sakai, S, Sandilya, L, Santelj, T, Sanuki, Y, Sato, V, Savinov, T, Schlüter, O, Schneider, G, Schnell, C, Schwanda, A J, Schwartz, Y, Seino, K, Senyo, O, Seon, M E, Sevior, V, Shebalin, C P, Shen, T-A, Shibata, J-G, Shiu, B, Shwartz, E, Solovieva, S, Stanič, M, Starič, J F, Strube, J, Stypula, T, Sumiyoshi, M, Takizawa, U, Tamponi, F, Tenchini, K, Trabelsi, M, Uchida, S, Uno, Y, Ushiroda, G, Varner, A, Vinokurova, V, Vorobyev, A, Vossen, C H, Wang, M-Z, Wang, P, Wang, Y, Watanabe, E, Widmann, E, Won, J, Yamaoka, Y, Yamashita, J, Yelton, Z P, Zhang, V, Zhilich, V, Zhukova, and V, Zhulanov

Abstract

We report the first observation of the radiative charm decay D^{0}→ρ^{0}γ and the first search for CP violation in decays D^{0}→ρ^{0}γ, ϕγ, and K[over ¯]^{*0}(892)γ, using a data sample of 943 fb^{-1} collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The branching fraction is measured to be B(D^{0}→ρ^{0}γ)=(1.77±0.30±0.07)×10^{-5}, where the first uncertainty is statistical and the second is systematic. The obtained CP asymmetries A_{CP}(D^{0}→ρ^{0}γ)=+0.056±0.152±0.006, A_{CP}(D^{0}→ϕγ)=-0.094±0.066±0.001, and A_{CP}(D^{0}→K[over ¯]^{*0}γ)=-0.003±0.020±0.000 are consistent with no CP violation. We also present an improved measurement of the branching fractions B(D^{0}→ϕγ)=(2.76±0.19±0.10)×10^{-5} and B(D^{0}→K[over ¯]^{*0}γ)=(4.66±0.21±0.21)×10^{-4}.

Published
2016

37. Energy Scan of thee+e−→hb(nP)π+π−(n=1, 2) Cross Sections and Evidence forϒ(11020)Decays into Charged Bottomoniumlike States

Author

A. Drutskoy, M. Niiyama, T. Matsuda, S. Uno, S. L. Olsen, K. Trabelsi, G. Bonvicini, J. Libby, C. H. Li, S. H. Kim, P. Krokovny, C. L. Hsu, C. Pulvermacher, K. H. Kang, Y. Watanabe, T. Aushev, Marko Petrič, A. Zupanc, K. Senyo, S. Nishida, Y. Seino, J. G. Shiu, B.A. Shwartz, T. Sumiyoshi, J. Dalseno, N. K. Nisar, Peter Kodys, T. Ferber, Martin Ritter, P. Katrenko, Y. Yamashita, M. Uchida, T. Sanuki, D. Matvienko, Phillip Urquijo, E. Nakano, D. Liventsev, V. Chobanova, D. Cinabro, T. K. Pedlar, A. Moll, Vladimir Zhulanov, G. Schnell, B. Pal, Z. P. Zhang, A. Garmash, K. Negishi, H. Li, M. E. Sevior, M. Lubej, Y. Onuki, L. E. Piilonen, P. Goldenzweig, D. M. Asner, G. Inguglia, C. Van Hulse, V. Zhukova, D. Semmler, G. S. Varner, J. Stypula, T. Luo, M. Masuda, Daniel Greenwald, T. Schlüter, R. Mizuk, C. Z. Yuan, D. A. Epifanov, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, I. Tikhomirov, P. Wang, S. Okuno, V.M. Aulchenko, T. Julius, T. Kuhr, S.I. Eidelman, B. G. Fulsom, G. B. Mohanty, B. G. Cheon, K. Hayasaka, E. L. Barberio, Y. Teramoto, H. Atmacan, Y. Unno, Ruslan Chistov, Yongsun Kim, Jyoti Prakash Biswal, R. Ayad, S. Korpar, D. Y. Kim, C. Schwanda, P. Pakhlov, V. Gaur, I. Adachi, J. Yamaoka, J. B. Kim, H. J. Kim, E. Solovieva, A.E. Bondar, M. Takizawa, G. Pakhlova, A. Kuzmin, Kiyoshi Tanida, T. Hara, H. Aihara, N. Dash, Y. Usov, S. Ogawa, V. Bhardwaj, D. Kotchetkov, K. M. Williams, A. Chen, John Yelton, Z. Doležal, X. L. Wang, H. Park, Mikhail Danilov, A. Bozek, K. T. Kim, Tara Nanut, R. Gillard, T. Uglov, L. Li Gioi, S. K. Choi, O. Seon, Frank Simon, Y. Choi, K. J. Nath, R. Pestotnik, C. H. Wang, B. Bhuyan, T. E. Browder, Y. Sakai, Y. M. Goh, A. Bobrov, V.E. Shebalin, H. Hayashii, V. Savinov, Soumen Paul, Liangbin Li, V. Chekelian, K. Chilikin, K. Inami, M. Z. Wang, K. Kinoshita, U. Tamponi, V.N. Zhilich, I. Jaegle, S. Sandilya, K. Miyabayashi, I. Badhrees, M. J. Kim, M. Bračko, M. Starič, Y. Iwasaki, Y. J. Kwon, O. Schneider, B. Golob, A. M. Bakich, J. S. Lange, E. Won, D. Červenkov, W. S. Hou, V. Vorobyev, A. Ishikawa, M. Nakao, and C. W. Park

Subjects
Physics, KEKB, Isovector, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Pi, General Physics and Astronomy, Intermediate state, Atomic physics, 010306 general physics, 01 natural sciences
Abstract

Using data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we measure the energy dependence of the e(+)e(-) -> h(b)(nP)pi(+)pi(-) (n = 1, 2) cross sections from thresholds up to 11.02 GeV. We find clear gamma(10860) and gamma(11020) peaks with little or no continuum contribution. We study the resonant substructure of the gamma(11020) -> h(b)(nP)pi(+)pi(_) transitions and find evidence that they proceed entirely via the intermediate isovector states Z(b)(10610) and Z(b)(10650). The relative fraction of these states is loosely constrained by the current data: The hypothesis that only Z(b)(10610) is produced is excluded at the level of 3.3 standard deviations, while the hypothesis that only Z(b)(10650) is produced is not excluded at a significant level.

Published
2016

38. Observation ofZb(10610)andZb(10650)Decaying toBMesons

Author

Tariq Aziz, S. Uno, Y. Choi, James E. Fast, G. Bonvicini, J. Libby, C. H. Li, Y. Yook, S. Eidelman, Y. Sakai, R. Mizuk, Y. M. Goh, A. Kuzmin, S. Sandilya, G. Schnell, S. H. Kim, P. Krokovny, T. E. Browder, Yongsun Kim, P. Pakhlov, A. Zupanc, P. Lukin, V. Babu, K. H. Kang, K. Cho, N. Dash, E. Nakano, T. Aushev, Y. Seino, T. Hara, T. Mori, I. Jaegle, H. Park, A. Bozek, R. Ayad, B. Pal, T. Ferber, T. Kuhr, K. Chilikin, A. M. Bakich, L. E. Piilonen, Hiroaki Aihara, C. Van Hulse, E. Kato, C. Z. Yuan, G. Pakhlova, V.E. Shebalin, D. Liventsev, Vladimir Zhulanov, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, V. Bhardwaj, T. K. Pedlar, B. Bhuyan, A. Moll, Dipanwita Dutta, E. Ribežl, N. Gabyshev, D. Červenkov, U. Tamponi, S. Yashchenko, D. Y. Kim, A. Abdesselam, M. E. Sevior, I. S. Lee, P. Goldenzweig, M. J. Kim, V. Gaur, Y. Teramoto, B. G. Cheon, R. Pestotnik, L. Li Gioi, V. Savinov, M. Danilov, C. Pulvermacher, A. Garmash, D. Semmler, G. B. Mohanty, R. Mussa, A. Ishikawa, T. Julius, P. L. Wang, Meng Wang, Y. Watanabe, D. Joffe, C. H. Wang, S. Nishida, M. Nakao, P. Križan, M. Starič, K. Hayasaka, A. Bobrov, D. Cinabro, T. Nanut, B. Shwartz, R. Itoh, K. K. Joo, E. Won, Liangbin Li, A. Rostomyan, A. Bondar, Z. Natkaniec, K. M. Williams, A. Chen, V. Chekelian, T. Sumiyoshi, M. Bračko, D. A. Epifanov, K. Senyo, Toru Iijima, A. Drutskoy, Hitoshi Yamamoto, Z. P. Zhang, S. L. Olsen, P. Vanhoefer, H. Sahoo, T. Sanuki, H. Hayashii, T. Uglov, I. Adachi, Marko Petrič, J. G. Shiu, J. Dalseno, D. Matvienko, K. Trabelsi, J. B. Kim, C. P. Shen, M. Ritter, Y. Iwasaki, V. Vorobyev, Y. J. Kwon, J. Yamaoka, K. Kinoshita, S. Uehara, O. Schneider, B. Golob, H. Li, J. S. Lange, D. M. Asner, Samo Korpar, E. Solovieva, Frank Simon, V.N. Zhilich, K. Miyabayashi, I. Badhrees, M. Masuda, M. Uchida, V. Chobanova, H. Farhat, G. S. Varner, M. N. Wagner, Y. S. Sohn, B. G. Fulsom, Ihn Sik Seong, T. Kawasaki, Kiyoshi Tanida, John Yelton, Z. Doležal, K. T. Kim, R. Gillard, and Christoph Schwanda

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Analytical chemistry, Pi, General Physics and Astronomy, B meson, 010306 general physics, 01 natural sciences, Bar (unit)
Abstract

We report the analysis of the three-body e(+)e(-) -> B (B) over bar pi(+/-), B (B) over bar*pi(+/-), and B*(B) over bar* pi(+/-) processes, including the first observations of the Z(b)(+/-)(10610) -> [B (B) over bar* + c.c.](+/-) and Z(b)(+/-)(10650) -> [B*(B) over bar*](+/-) transitions that are found to dominate the corresponding final states. We measure Born cross sections for the three-body production of sigma(e(+)e(-) -> [B (B) over bar* + c.c.](+/-)pi(-/+)) = [17.4 +/- 1.6(stat) +/- 1.9(syst)]pb and sigma(e(+)e(-) -> [B*(B) over bar*](+/-)pi(-/+)) = [8.75 +/- 1.15(stat) +/- 1.04(syst)] pb and set a 90% C.L. upper limit of sigma(e(+)e(-) -> [B (B) over bar](+/-)pi(-/+)) < 2.9 pb. The results are based on a 121.4 fb(-1) data sample collected with the Belle detector at a center-of-mass energy near the Upsilon(10860) peak.

Published
2016

39. Observation of the DecayBs0→K0K¯0

Author

B. Bhuyan, R. Mussa, Marko Petrič, H. B. Jeon, A. Ishikawa, Yuki Sato, A. Drutskoy, T. E. Browder, C. W. Park, D. Matvienko, P. Križan, D. Cinabro, I. Adachi, S. Sandilya, A. Bobrov, K. Trabelsi, D. M. Asner, A. Vinokurova, S. H. Kim, P. Krokovny, Rakesh Kumar, V. Savinov, K. H. Kang, K. Cho, B. G. Cheon, T. K. Pedlar, V. Babu, Tariq Aziz, T. Aushev, Ihn Sik Seong, T. Kawasaki, A. Zupanc, R. Pestotnik, A. Kuzmin, H. K. Moon, V.N. Zhilich, B. Pal, M. Uchida, L. Pesántez, Peter Kodys, W. W. Jacobs, G. Pakhlova, Z. Drásal, P. Pakhlov, A. Moll, J. Haba, X. H. He, S. Ogawa, Y. Choi, P.A. Lukin, V. Chobanova, Hiroaki Aihara, J. Stypula, C. Pulvermacher, C. Z. Yuan, N. K. Nisar, T. Hara, H. Park, S. Korpar, G. S. Varner, T. Luo, M. J. Kim, K. Miyabayashi, T. Kuhr, A. Bozek, M. Masuda, S. Okuno, B.A. Shwartz, Y. M. Goh, I. Jaegle, Jyoti Prakash Biswal, Sunmin Ryu, M. Starič, R. Ayad, J. Yamaoka, L. Li Gioi, Seema Bahinipati, L. E. Piilonen, E. Ribežl, A. Garmash, K. K. Joo, E. Won, M. N. Wagner, S. Nishida, B. G. Fulsom, T. Kumita, Liangbin Li, A. Rostomyan, V. Chekelian, T. Julius, G. Schnell, S. Uehara, D. Y. Kim, A. J. Schwartz, H. J. Kim, K. M. Williams, R. Chistov, D. Liventsev, Vladimir Zhulanov, A. Chen, P. Vanhoefer, J. G. Shiu, G. B. Mohanty, Samo Stanič, Y. Teramoto, V.E. Shebalin, H. Hayashii, H. Sahoo, T. Nanut, T. A. Shibata, H. Miyata, Prafulla Kumar Behera, I. S. Lee, S.I. Eidelman, Phillip Urquijo, J. Rauch, K. Senyo, E. Nakano, P. Goldenzweig, A. M. Bakich, Z. Natkaniec, T. Sumiyoshi, W. S. Hou, R. Mizuk, Y. Yusa, C. Van Hulse, Martin Ritter, K. Hayasaka, A. Abdesselam, V. Gaur, H. Farhat, J. Libby, D. Červenkov, C. H. Li, T. Sanuki, John Yelton, Y. Iwasaki, Z. Doležal, X. L. Wang, Y. J. Kwon, Andrey Sokolov, T. Schlüter, M. Watanabe, Dipanwita Dutta, D. Joffe, K. T. Kim, K. Inami, R. Gillard, Saraju P. Mohanty, O. Schneider, C. Kiesling, Y. S. Sohn, Y. Seino, M. Z. Wang, K. Kinoshita, U. Tamponi, S. Uno, C. Schwanda, M. Nayak, M. Nakao, I. Badhrees, H. Li, James E. Fast, M. Sumihama, O. Grzymkowska, C. H. Wang, J. Dalseno, Soumen Paul, E. Kato, E. L. Barberio, Y. Watanabe, T. Mori, D. Greenwald, Y. Usov, Z. P. Zhang, T. Uglov, Y. Sakai, E. Solovieva, A. Vossen, O. Seon, Frank Simon, N. Dash, V. Bhardwaj, and M. Bračko

Subjects
Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Detector, General Physics and Astronomy, Resonance, 01 natural sciences, Measure (mathematics), law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, 010306 general physics, Collider
Abstract

We measure the decay Bs0→K0K0 using data collected at the ?(5S) resonance with the Belle detector at the KEKB e+e- collider. The data sample used corresponds to an integrated luminosity of 121.4 fb-1. We measure a branching fraction B(Bs0→K0K0)=[19.6-5.1+5.8(stat)±1.0(syst)±2.0(NBs0Bs0)]×10-6 with a significance of 5.1 standard deviations. This measurement constitutes the first observation of this decay.

Published
2016

40. Observation of the Decay B_{s}^{0}→K^{0}K[over ¯]^{0}

Author

B, Pal, A J, Schwartz, A, Abdesselam, I, Adachi, H, Aihara, D M, Asner, T, Aushev, R, Ayad, T, Aziz, V, Babu, I, Badhrees, S, Bahinipati, A M, Bakich, E, Barberio, P, Behera, V, Bhardwaj, B, Bhuyan, J, Biswal, A, Bobrov, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, V, Chekelian, A, Chen, B G, Cheon, R, Chistov, K, Cho, V, Chobanova, Y, Choi, D, Cinabro, J, Dalseno, N, Dash, Z, Doležal, Z, Drásal, A, Drutskoy, D, Dutta, S, Eidelman, H, Farhat, J E, Fast, B G, Fulsom, V, Gaur, A, Garmash, R, Gillard, Y M, Goh, P, Goldenzweig, D, Greenwald, O, Grzymkowska, J, Haba, T, Hara, K, Hayasaka, H, Hayashii, X H, He, W-S, Hou, K, Inami, A, Ishikawa, Y, Iwasaki, W W, Jacobs, I, Jaegle, H B, Jeon, D, Joffe, K K, Joo, T, Julius, K H, Kang, E, Kato, T, Kawasaki, C, Kiesling, D Y, Kim, H J, Kim, K T, Kim, M J, Kim, S H, Kim, K, Kinoshita, P, Kodyš, S, Korpar, P, Križan, P, Krokovny, T, Kuhr, R, Kumar, T, Kumita, A, Kuzmin, Y-J, Kwon, I S, Lee, C H, Li, H, Li, L, Li, L, Li Gioi, J, Libby, D, Liventsev, P, Lukin, T, Luo, M, Masuda, D, Matvienko, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, S, Mohanty, A, Moll, H K, Moon, T, Mori, R, Mussa, E, Nakano, M, Nakao, T, Nanut, Z, Natkaniec, M, Nayak, N K, Nisar, S, Nishida, S, Ogawa, S, Okuno, P, Pakhlov, G, Pakhlova, C W, Park, H, Park, S, Paul, T K, Pedlar, L, Pesántez, R, Pestotnik, M, Petrič, L E, Piilonen, C, Pulvermacher, J, Rauch, E, Ribežl, M, Ritter, A, Rostomyan, S, Ryu, H, Sahoo, Y, Sakai, S, Sandilya, T, Sanuki, Y, Sato, V, Savinov, T, Schlüter, O, Schneider, G, Schnell, C, Schwanda, Y, Seino, K, Senyo, O, Seon, I S, Seong, V, Shebalin, T-A, Shibata, J-G, Shiu, B, Shwartz, F, Simon, Y-S, Sohn, A, Sokolov, E, Solovieva, S, Stanič, M, Starič, J, Stypula, M, Sumihama, T, Sumiyoshi, U, Tamponi, Y, Teramoto, K, Trabelsi, M, Uchida, S, Uehara, T, Uglov, S, Uno, P, Urquijo, Y, Usov, C, Van Hulse, P, Vanhoefer, G, Varner, A, Vinokurova, A, Vossen, M N, Wagner, C H, Wang, M-Z, Wang, X L, Wang, M, Watanabe, Y, Watanabe, K M, Williams, E, Won, J, Yamaoka, J, Yelton, C Z, Yuan, Y, Yusa, Z P, Zhang, V, Zhilich, V, Zhulanov, and A, Zupanc

Abstract

We measure the decay B_{s}^{0}→K^{0}K[over ¯]^{0} using data collected at the ϒ(5S) resonance with the Belle detector at the KEKB e^{+}e^{-} collider. The data sample used corresponds to an integrated luminosity of 121.4 fb^{-1}. We measure a branching fraction B(B_{s}^{0}→K^{0}K[over ¯]^{0})=[19.6_{-5.1}^{+5.8}(stat)±1.0(syst)±2.0(N_{B_{s}^{0}B[over ¯]_{s}^{0}})]×10^{-6} with a significance of 5.1 standard deviations. This measurement constitutes the first observation of this decay.

Published
2015

41. Observation ofB0→pΛ¯D(*)−

Author

Y. Choi, L. Santelj, L. K. Li, V. Chobanova, J. Dalseno, D. Liventsev, L. E. Piilonen, G. Pakhlova, J. G. Shiu, H. Sahoo, Tara Nanut, T. Uglov, G. S. Varner, P.A. Lukin, J. Rauch, J. Libby, S. Yashchenko, A. Zupanc, R. Glattauer, R. Itoh, A. Rostomyan, Y. M. Goh, M. Sumihama, P. Wang, A. Abdesselam, A. M. Bakich, R. Chistov, X. H. He, Y. Seino, V. Babu, T. Aushev, J. Stypula, Y. B. Li, T. Ferber, N. Gabyshev, D. Červenkov, M. Z. Wang, K. Kinoshita, E. L. Barberio, E. Nakano, J. Yamaoka, Y. Yusa, M. E. Sevior, I. S. Lee, D. Cinabro, G. Schnell, T. Iijima, Y. Sakai, S. Eidelman, P. Pakhlov, K. Chilikin, Y. J. Kim, H. Ozaki, M. Masuda, G. B. Mohanty, K. Adamczyk, T. Sumiyoshi, S. Ogawa, T.-A. Shibata, K. Tanida, A. Bozek, Jung-Hyun Kim, W. S. Hou, T. Kuhr, Martin Ritter, B. Bhuyan, T. Sanuki, R. Pestotnik, B. G. Cheon, Dipanwita Dutta, Hirokazu Miyake, R. Mizuk, Y. Watanabe, B. G. Fulsom, T. E. Browder, Alexei Kuzmin, A. Chen, Y. Unno, E. Ribežl, V. Savinov, K. Inami, M. Danilov, K. Senyo, C. P. Shen, Z. Drásal, I. Adachi, S. Korpar, Ihn Sik Seong, K. K. Joo, M. Bračko, T. Kawasaki, Seok Kim, V. Vorobyev, S. Nishida, V. Chekelian, C.-L. Hsu, Y. Teramoto, K. M. Williams, John Yelton, Z. Doležal, H. Hayashii, Hyunyong Kim, B. K. Pal, J. Haba, W. W. Jacobs, Sunmin Ryu, K. T. Kim, C. W. Park, E. Won, T. Mori, H. Aihara, R. Gillard, S. K. Choi, Y. Usov, H. Atmacan, Z. P. Zhang, P. Goldenzweig, P. Vanhoefer, S. Sandilya, M. J. Kim, M. Starič, H. Farhat, Jyoti Prakash Biswal, J. B. Kim, T. Kumita, V. Gaur, Y. S. Sohn, M. Nakao, V.N. Zhilich, H. K. Moon, Y. Iwasaki, I. Jaegle, K. Miyabayashi, Y. J. Kwon, I. Badhrees, O. Schneider, K. Sumisawa, D. M. Asner, D. Joffe, A. Vossen, Frank Simon, Y.-T. Lai, M. Nayak, S. Al Said, J. E. Fast, S. Uno, C. Schwanda, Sanmay Ganguly, V.E. Shebalin, M. Watanabe, M. N. Wagner, J. C. Dingfelder, Marko Petrič, U. Tamponi, D. Matvienko, O. Grzymkowska, C. H. Wang, C. B. Van Hulse, V. V. Zhulanov, Yu Kai Chang, D. Y. Kim, A. Ishikawa, P. Križan, H. Miyata, A. Garmash, P. Krokovny, K. Hayasaka, A. Bobrov, Daniel Greenwald, Soumya D. Mohanty, T. K. Pedlar, and A. Moll

Subjects
Physics, Combinatorics, KEKB, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, 010306 general physics, 01 natural sciences
Abstract

We report the first observation of the decays ${B}^{0}\ensuremath{\rightarrow}p\overline{\mathrm{\ensuremath{\Lambda}}}{D}^{(*)\ensuremath{-}}$. The data sample of $711\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ used in this analysis corresponds to $772\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs, collected at the $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance by the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. We observe $19.8\ensuremath{\sigma}$ and $10.8\ensuremath{\sigma}$ excesses of events for the two decay modes and measure the branching fractions of ${B}^{0}\ensuremath{\rightarrow}p\overline{\mathrm{\ensuremath{\Lambda}}}{D}^{\ensuremath{-}}$ and ${B}^{0}\ensuremath{\rightarrow}p\overline{\mathrm{\ensuremath{\Lambda}}}{D}^{*\ensuremath{-}}$ to be $(25.1\ifmmode\pm\else\textpm\fi{}2.6\ifmmode\pm\else\textpm\fi{}3.5)\ifmmode\times\else\texttimes\fi{}1{0}^{\ensuremath{-}6}$ and $(33.6\ifmmode\pm\else\textpm\fi{}6.3\ifmmode\pm\else\textpm\fi{}4.4)\ifmmode\times\else\texttimes\fi{}1{0}^{\ensuremath{-}6}$, respectively, where the first uncertainties are statistical and the second are systematic. These results are not compatible with the predictions based on the generalized factorization approach. In addition, a threshold enhancement in the dibaryon ($p\overline{\mathrm{\ensuremath{\Lambda}}}$) system is observed, consistent with that observed in similar $B$ decays.

Published
2015

42. First Observation ofCPViolation inB¯0→DCP(*)h0Decays by a Combined Time-Dependent Analysis ofBABARand Belle Data

Author

P. Lukin, B. R. Ko, J. L. Ritchie, S. I. Serednyakov, G. Schnell, T. Iijima, R. Y. So, B. N. Ratcliff, T. K. Pedlar, Maria Roberta Monge, J. A. McKenna, Mauro Morandin, E. Paoloni, R. Andreassen, T. Kuhr, Andrey Sokolov, V. Bhardwaj, R. F. Schwitters, M. Sumihama, C. H. Chen, S. M. Spanier, A. Adametz, P. Taras, M. Gaspero, O. Seon, Frank Simon, Vladimir Blinov, J. P. Coleman, T. Sumiyoshi, M. J. Lee, J. Dalseno, K. T. Kim, R. Sacco, C. Bünger, V. Prasad, M. Ebert, U. Uwer, R. Gillard, T. S. Mattison, James E. Fast, T. Sanuki, Matteo Rama, James G. Smith, S. Prell, S. K. Choi, L. E. Piilonen, James H Cochran, V. Poireau, Maurizio Biasini, R. Godang, A. Jawahery, L. Pesántez, S. Ogawa, Douglas Wright, I. M. Peruzzi, D. Getzkow, G. Pakhlova, V. P. Druzhinin, E. Solovieva, A. M. Rossi, T. Hara, N. Tasneem, T. M. Hong, K. Sumisawa, P. C. Bloom, Roger Barlow, Martino Margoni, G. Cibinetto, S. Uno, J. G. Shiu, S. Al Said, C. Hast, D. J. Lange, G. Piredda, G. De Nardo, G. Bonvicini, R. Faccini, F. Ferrarotto, A. J. Lankford, F. Le Diberder, J. D. Richman, B. Malaescu, F. Bianchi, P. Pakhlov, K. M. Williams, A. Chen, R. Cenci, Aidan Randle-Conde, W. S. Hou, B. Hamilton, M. Franco Sevilla, G. R. Bonneaud, Giulia Casarosa, G. Wormser, W. Panduro Vazquez, M. Feindt, A. Vinokurova, M. Röhrken, S. Luitz, S. Dittrich, Joseph Izen, A. Roodman, L. Piemontese, P. Ongmongkolkul, Z. C. Huard, E. Fioravanti, T. Pulliam, Roland Waldi, J. Ocariz, S. Yashchenko, B. Spaan, H. Briand, T. Julius, W. Gradl, J. W. Gary, H. W. Wulsin, A. Drutskoy, Y. Onuki, U. Mallik, T. Schroeder, S. Okuno, E. Ribežl, A. Zallo, M. Hess, S. Nishida, L. Lanceri, R. Chistov, E. Nakano, C. Van Hulse, Owen Rosser Long, A. Seiden, M. Masuda, V. Babu, F. Ferroni, Pu Wang, D. J. Bard, A. Oyanguren, L. Li Gioi, Z. Drásal, Gabriele Simi, C. H. Wang, A.E. Bondar, W. Dunwoodie, H. Park, Yongsun Kim, H. Farhat, Jochen Dingfelder, R. Cheaib, R. C. Field, S. H. Kim, P. Krokovny, E. Gabathuler, W. R. Innes, F. C. Porter, S.E. Vahsen, Timothy Gershon, Rakesh Kumar, A. Bozek, G. A. Cowan, G. Finocchiaro, V. Luth, A. Zupanc, G. Rizzo, W. T. Ford, C. Schwanda, Tim Adye, R. D. Kass, J. A. Ernst, Bruce Schumm, Y. J. Kwon, A. M. Lutz, C. L. Davis, G. B. Mohanty, Paul Fraser Harrison, V.M. Aulchenko, C. Touramanis, Z. P. Zhang, E. L. Barberio, Alberto Lusiani, P. M. Patel, T. Nanut, K. Trabelsi, T. Tsuboyama, W. J. Wisniewski, O. Schneider, K. H. Kang, K. Cho, C. Voß, D. N. Brown, Z. Doležal, M. S. Alam, Stephen Robert Wagner, Christopher West, M. Nayak, V. Vorobyev, F. Anulli, C. P. Shen, D. Su, R. Stroili, R. Mizuk, Y. Yusa, A. Snyder, R. Calabrese, Dipanwita Dutta, Alessandro Gaz, Marcello Rotondo, S. H. Robertson, D. H. Lee, A. P. Onuchin, L. Sun, S. Martellotti, M. Carpinelli, Marcin Chrzaszcz, J. M. LoSecco, M. Fritsch, Elisa Manoni, B. G. Pushpawela, T. Leddig, S. Passaggio, M. Piccolo, B. Pal, H. R. Band, D. Joffe, F. Simonetto, Y. Teramoto, B. G. Cheon, C. Cartaro, Biplab Dey, Y. B. Hsiung, H. H. F. Choi, S. Playfer, R. H. Schindler, X. H. He, L. M. Cremaldi, A.S. Kuzmin, R. Cowan, Herbert Koch, A. Calcaterra, W. S. Lockman, S. Emery, Fergus Wilson, M. Shapkin, M. Z. Wang, K. Kinoshita, U. Tamponi, Andrei Gritsan, A. Rostomyan, K. Yu. Todyshev, Yu. I. Skovpen, Y. Watanabe, Hiroaki Aihara, G. Batignani, I. M. Nugent, M. T. Graham, T. Aushev, V. B. Golubev, J. Yamaoka, J. Chauveau, F. De Mori, A. Moll, Marko Petrič, T. Uglov, E. P. Solodov, Adrian John Bevan, Dmytro Kovalskyi, K. Chilikin, M. R. Convery, K. Griessinger, V. Chekelian, B. Oberhof, P. Lewis, F. Di Lodovico, T. S. Miyashita, D. S. Chao, Heiko Lacker, J. P. Lees, A. Garmash, A. Palano, Eleonora Luppi, I. Adachi, G. J. King, M. J. Lewczuk, C. C. Zhang, Alessandro Pilloni, Denis Bernard, D. J. Payne, M. Davier, Vladimir Zhulanov, K. Arinstein, T. Ferber, R. Itoh, Brian Meadows, C. Z. Yuan, T. A. Shibata, H. Miyata, E. Ben-Haim, M. E. Sevior, I. S. Lee, E. A. Kravchenko, D. Cinabro, N. K. Nisar, L. Santelj, D. R. Peimer, P. Goldenzweig, D. G. Hitlin, Peter S. Kim, H. A. Neal, J. Dorfan, P. Roudeau, S.I. Eidelman, V.E. Shebalin, David Hutchcroft, K. R. Schubert, I. Jaegle, W. Ostrowicz, X. C. Lou, Jyoti Prakash Biswal, Crisostomo Sciacca, D. Aston, M. Starič, F. Palombo, B. Bhuyan, J. Va’vra, S. Korpar, Y. S. Sohn, R. Contri, K. K. Joo, C. Hearty, Y. Sakai, D. Matvienko, G. Inguglia, E. Won, J. B. Kim, A. M. Bakich, Sw. Banerjee, V. Santoro, Y. M. Goh, B. G. Fulsom, Yuki Sato, K. Hayasaka, D. Gamba, Nicola Neri, T. E. Browder, D. W. G. S. Leith, D. J. Summers, P. Chang, H. Nakazawa, P. Patteri, R. Pestotnik, D. M. Asner, M. Verderi, Ph Leruste, S. Sandilya, A. Abdesselam, M. Bomben, R. J. Sobie, N. Arnaud, A. R. Buzykaev, L. Vitale, A. Bobrov, N. Guttman, F. Martinez-Vidal, J. Haba, Dominik Müller, N. Gabyshev, D. Červenkov, A. Beaulieu, V. Gaur, A. J. Schwartz, B. Stugu, Hitoshi Yamamoto, Jung-Hyun Kim, G. Calderini, H. Ahmed, Yoshinobu Unno, K. Senyo, V. Savinov, E. Grauges, P. Vanhoefer, J. M. Roney, G. Lynch, D. Bettoni, B. Echenard, M. K. Sullivan, A. G. Denig, Corrado Angelini, Stephen Sekula, Mario Giorgi, C. Kiesling, G. Marchiori, Y. Iwasaki, D. Lopes Pegna, I. Garzia, A. Khan, Y. B. Pan, R. Kowalewski, Thomas Latham, C. Patrignani, V. Tisserand, M. Bračko, C. Bozzi, S. Bettarini, J. J. Walsh, Sridhara Dasu, Peter Kodys, K. Honscheid, George Lafferty, E. O. Olaiya, J. Libby, B. Golob, Florian Urs Bernlochner, T. Lueck, R. Glattauer, A. Stocchi, G. P. Dubois-Felsmann, James D. Olsen, H. K. Moon, R. Ayad, M. Posocco, Yu. G. Kolomensky, L. T. Kerth, M. Bellis, V.N. Zhilich, Colin Jessop, R. Prepost, Denis Derkach, H. Hayashii, Oliver Grünberg, F. Forti, Y. Usov, A. J.S. Smith, K. Miyabayashi, Seema Bahinipati, James R. Wilson, I. Badhrees, R. Mussa, G. Vasseur, Simon Akar, G. Onorato, A. Ishikawa, A. Filippi, K. T. Flood, M. Nakao, C. W. Park, P. Križan, G. Raven, M. D. Sokoloff, P. R. Burchat, D. Y. Kim, R. Gorodeisky, M. Simard, D. A. Roberts, G. Grosdidier, A. Hafner, E. M. T. Puccio, G. Eigen, D. B. MacFarlane, A. M. Eisner, M. V. Purohit, J. Albert, T. Kawasaki, M. Uchida, V. Chobanova, J. R. Fry, C. H. Cheng, G. S. Varner, R. de Sangro, S. L. Wu, W. H. Toki, M. N. Wagner, and Abner Soffer

Subjects
Physics, Particle physics, Meson, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, General Physics and Astronomy, 01 natural sciences, Omega, Asymmetry, B-factory, Nuclear physics, KEKB, 0103 physical sciences, D meson, CP violation, 010306 general physics, media_common
Abstract

We report a measurement of the time-dependent CP asymmetry of B0->D(*)CP h0 decays, where the light neutral hadron h0 is a pi0, eta or omega meson, and the neutral D meson is reconstructed in the CP eigenstates K+ K-, K0S pi0 or K0S omega. The measurement is performed combining the final data samples collected at the Y(4S) resonance by the BaBar and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain ( 471 +/- 3 ) x 10^6 BB pairs recorded by the BaBar detector and ( 772 +/- 11 ) x 10^6, BB pairs recorded by the Belle detector. We measure the CP asymmetry parameters -eta_f S = +0.66 +/- 0.10 (stat.) +/- 0.06 (syst.) and C = -0.02 +/- 0.07 (stat.) +/- 0.03 (syst.). These results correspond to the first observation of CP violation in B0->D(*)CP h0 decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

Published
2015

43. Observation of B^{0}→pΛ[over ¯]D^{(*)-}

Author

Y-Y, Chang, M-Z, Wang, A, Abdesselam, I, Adachi, K, Adamczyk, H, Aihara, S, Al Said, D M, Asner, H, Atmacan, T, Aushev, V, Babu, I, Badhrees, A M, Bakich, E, Barberio, B, Bhuyan, J, Biswal, A, Bobrov, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, V, Chekelian, A, Chen, B G, Cheon, K, Chilikin, R, Chistov, V, Chobanova, S-K, Choi, Y, Choi, D, Cinabro, J, Dalseno, M, Danilov, J, Dingfelder, Z, Doležal, Z, Drásal, D, Dutta, S, Eidelman, H, Farhat, J E, Fast, T, Ferber, B G, Fulsom, V, Gaur, N, Gabyshev, S, Ganguly, A, Garmash, R, Gillard, R, Glattauer, Y M, Goh, P, Goldenzweig, D, Greenwald, O, Grzymkowska, J, Haba, K, Hayasaka, H, Hayashii, X H, He, W-S, Hou, C-L, Hsu, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, Y, Iwasaki, W W, Jacobs, I, Jaegle, D, Joffe, K K, Joo, T, Kawasaki, D Y, Kim, H J, Kim, J B, Kim, J H, Kim, K T, Kim, M J, Kim, S H, Kim, Y J, Kim, K, Kinoshita, S, Korpar, P, Križan, P, Krokovny, T, Kuhr, T, Kumita, A, Kuzmin, Y-J, Kwon, Y-T, Lai, I S, Lee, L, Li, Y, Li, J, Libby, D, Liventsev, P, Lukin, M, Masuda, D, Matvienko, K, Miyabayashi, H, Miyake, H, Miyata, R, Mizuk, G B, Mohanty, S, Mohanty, A, Moll, H K, Moon, T, Mori, E, Nakano, M, Nakao, T, Nanut, M, Nayak, S, Nishida, S, Ogawa, H, Ozaki, P, Pakhlov, G, Pakhlova, B, Pal, C W, Park, T K, Pedlar, R, Pestotnik, M, Petrič, L E, Piilonen, J, Rauch, E, Ribežl, M, Ritter, A, Rostomyan, S, Ryu, H, Sahoo, Y, Sakai, S, Sandilya, L, Santelj, T, Sanuki, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, Y, Seino, K, Senyo, I S, Seong, M E, Sevior, V, Shebalin, C P, Shen, T-A, Shibata, J-G, Shiu, F, Simon, Y-S, Sohn, M, Starič, J, Stypula, M, Sumihama, K, Sumisawa, T, Sumiyoshi, U, Tamponi, K, Tanida, Y, Teramoto, T, Uglov, Y, Unno, S, Uno, Y, Usov, C, Van Hulse, P, Vanhoefer, G, Varner, V, Vorobyev, A, Vossen, M N, Wagner, C H, Wang, P, Wang, M, Watanabe, Y, Watanabe, K M, Williams, E, Won, J, Yamaoka, S, Yashchenko, J, Yelton, Y, Yusa, Z P, Zhang, V, Zhilich, V, Zhulanov, and A, Zupanc

Abstract

We report the first observation of the decays B^{0}→pΛ[over ¯]D^{(*)-}. The data sample of 711 fb^{-1} used in this analysis corresponds to 772×10^{6} BB[over ¯] pairs, collected at the ϒ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We observe 19.8σ and 10.8σ excesses of events for the two decay modes and measure the branching fractions of B^{0}→pΛ[over ¯]D^{-} and B^{0}→pΛ[over ¯]D^{*-} to be (25.1±2.6±3.5)×10^{-6} and (33.6±6.3±4.4)×10^{-6}, respectively, where the first uncertainties are statistical and the second are systematic. These results are not compatible with the predictions based on the generalized factorization approach. In addition, a threshold enhancement in the dibaryon (pΛ[over ¯]) system is observed, consistent with that observed in similar B decays.

Published
2015

44. Measurement of the DirectCPAsymmetry inB¯→Xs+dγDecays with a Lepton Tag

Author

T. Sumiyoshi, Z. Natkaniec, B. R. Ko, N. Gabyshev, C. Kiesling, J. Hasenbusch, G. Schnell, Y. Sakai, G. Varner, D. Cinabro, V.E. Shebalin, B. Bhuyan, Y. Usov, G. Pakhlova, A. Drutskoy, Z. DoleŽal, J. E. Fast, V.M. Aulchenko, X. H. He, Yuki Sato, M. Uchida, S. Al Said, Y. Choi, A. M. Bakich, N. Taniguchi, S. Yashchenko, B.A. Shwartz, A. Bobrov, A. Garmash, Tsuyoshi Horiguchi, Jung-Hyun Kim, E. L. Barberio, D. Y. Kim, K. Trabelsi, V. Savinov, C. P. Shen, Y. J. Kwon, T. Ferber, R. Itoh, K. T. Kim, Peter Kodys, K. Senyo, T. Julius, A. Moll, R. Gillard, Y. Watanabe, K. Inami, H. Miyata, V. Chobanova, S. Sandilya, P. Krokovny, Hiroaki Aihara, Yongsun Kim, A. Ishikawa, C. Schwanda, O. Schneider, S. Korpar, T. Kuhr, Y. S. Sohn, D. Liventsev, A. Abdesselam, Kyung-Suk Cho, O. Seon, M. Z. Wang, U. Tamponi, E. Kato, F. Simon, D. Getzkow, T. Aushev, Jochen Dingfelder, A. Heller, A. Rostomyan, V. Chekelian, V. Bhardwaj, Byung Gu Cheon, R. Chistov, A.E. Bondar, P. Wang, Y. Iwasaki, P. Pakhlov, J. Yamaoka, M. Rozanska, G. B. Mohanty, K. Adamczyk, L. Pesántez, M. N. Wagner, T. E. Browder, J. Dalseno, H. Farhat, Phillip Urquijo, A. Zupanc, M. Nakao, T. Sanuki, Vladimir Zhulanov, M. E. Sevior, I. S. Lee, R. Mizuk, H. Park, Z. P. Zhang, M. Ritter, L. Li Gioi, M. J. Kim, G. Tatishvili, B. Kronenbitter, A. Bozek, S. L. Olsen, M. Starič, D. Joffe, J. B. Kim, D. M. Asner, Vikas Bansal, T. Kumita, T. A. Shibata, H. Hayashii, M. Petrič, C. Ng, K. Arinstein, M. Bračko, C. Oswald, Yang Li, T. Kawasaki, N. K. Nisar, L. Santelj, A.S. Kuzmin, C. Van Hulse, Yoshinobu Unno, M. Steder, T. Nanut, J. Haba, Y. M. Goh, J. Libby, I. Adachi, E. Won, L. E. Piilonen, J. G. Shiu, E. Solovieva, D. Matvienko, C. H. Wang, D. Dutta, S. Okuno, E. Ribežl, C. W. Park, P. Križan, P. Vanhoefer, A. J. Schwartz, W. S. Hou, Andrey Sokolov, T. Uglov, A.L. Sibidanov, V. Vorobyev, V.N. Zhilich, Bingran Wang, V. Gaur, B. Golob, I. Jaegle, K. Miyabayashi, H. K. Moon, M. Nayak, S. Nishida, J. S. Lange, S. Ganguly, E. Nakano, Y. Yook, Semen Eidelman, S. Uno, G. Bonvicini, A. Vinokurova, S. H. Kim, K. H. Kang, D. Červenkov, P. Lukin, R. Ayad, T. K. Pedlar, K. M. Williams, A. Chen, K. Chilikin, R. Pestotnik, Z. Drásal, Y. Teramoto, M. Huschle, Toru Iijima, Seema Bahinipati, O. Frost, and S. Ogawa

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, media_common.quotation_subject, Gamma ray, General Physics and Astronomy, Resonance, Photon energy, 01 natural sciences, Asymmetry, Nuclear physics, KEKB, 0103 physical sciences, CP violation, High Energy Physics::Experiment, 010306 general physics, Lepton, media_common
Abstract

We report the measurement of the direct CP asymmetry in the radiative (B) over bar -> Xs+d gamma decay using a data sample of (772 +/- 11) 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. The CP asymmetry is measured as a function of the photon energy threshold. For E-gamma* >= 2.1 GeV, where E-gamma* is the photon energy in the center-of-mass frame, we obtain A(CP) ((B) over bar -> Xs+d gamma) = (2.2 +/- 3.9 +/- 0.9)%, consistent with the standard model prediction.

Published
2015

45. Measurement of the Direct CP Asymmetry in B¯→X(s+dγ) Decays with a Lepton Tag

Author

L, Pesántez, P, Urquijo, J, Dingfelder, A, Abdesselam, I, Adachi, K, Adamczyk, H, Aihara, S, Al Said, K, Arinstein, D M, Asner, V, Aulchenko, T, Aushev, R, Ayad, S, Bahinipati, A M, Bakich, V, Bansal, E, Barberio, V, Bhardwaj, B, Bhuyan, A, Bobrov, A, Bondar, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, D, Červenkov, V, Chekelian, A, Chen, B G, Cheon, K, Chilikin, R, Chistov, K, Cho, V, Chobanova, Y, Choi, D, Cinabro, J, Dalseno, Z, Doležal, Z, Drásal, A, Drutskoy, D, Dutta, S, Eidelman, H, Farhat, J E, Fast, T, Ferber, O, Frost, V, Gaur, N, Gabyshev, S, Ganguly, A, Garmash, D, Getzkow, R, Gillard, Y M, Goh, B, Golob, J, Haba, J, Hasenbusch, H, Hayashii, X H, He, A, Heller, T, Horiguchi, W-S, Hou, M, Huschle, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, Y, Iwasaki, I, Jaegle, D, Joffe, T, Julius, K H, Kang, E, Kato, T, Kawasaki, C, Kiesling, D Y, Kim, J B, Kim, J H, Kim, K T, Kim, M J, Kim, S H, Kim, Y J, Kim, B R, Ko, P, Kodyš, S, Korpar, P, Križan, P, Krokovny, B, Kronenbitter, T, Kuhr, T, Kumita, A, Kuzmin, Y-J, Kwon, J S, Lange, I S, Lee, Y, Li, L, Li Gioi, J, Libby, D, Liventsev, P, Lukin, D, Matvienko, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, A, Moll, H K, Moon, E, Nakano, M, Nakao, T, Nanut, Z, Natkaniec, M, Nayak, C, Ng, N K, Nisar, S, Nishida, S, Ogawa, S, Okuno, S L, Olsen, C, Oswald, P, Pakhlov, G, Pakhlova, C W, Park, H, Park, T K, Pedlar, R, Pestotnik, M, Petrič, L E, Piilonen, E, Ribežl, M, Ritter, A, Rostomyan, M, Rozanska, Y, Sakai, S, Sandilya, L, Santelj, T, Sanuki, Y, Sato, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, A J, Schwartz, K, Senyo, O, Seon, M E, Sevior, V, Shebalin, C P, Shen, T-A, Shibata, J-G, Shiu, B, Shwartz, A, Sibidanov, F, Simon, Y-S, Sohn, A, Sokolov, E, Solovieva, M, Starič, M, Steder, T, Sumiyoshi, U, Tamponi, N, Taniguchi, G, Tatishvili, Y, Teramoto, K, Trabelsi, M, Uchida, T, Uglov, Y, Unno, S, Uno, Y, Usov, C, Van Hulse, P, Vanhoefer, G, Varner, A, Vinokurova, V, Vorobyev, M N, Wagner, B, Wang, C H, Wang, M-Z, Wang, P, Wang, Y, Watanabe, K M, Williams, E, Won, J, Yamaoka, S, Yashchenko, Y, Yook, Z P, Zhang, V, Zhilich, V, Zhulanov, and A, Zupanc

Abstract

We report the measurement of the direct CP asymmetry in the radiative B¯→X(s+dγ) decay using a data sample of (772 ± 11)×10(6) BB[over ¯] pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The CP asymmetry is measured as a function of the photon energy threshold. For Eγ*≥2.1 GeV, where Eγ* is the photon energy in the center-of-mass frame, we obtain A(CP)(B¯→X(s+dγ))=(2.2±3.9±0.9)%, consistent with the standard model prediction.

Published
2015

46. Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e+e- Annihilation at Belle

Author

R, Seidl, K, Hasuko, K, Abe, I, Adachi, H, Aihara, D, Anipko, Y, Asano, T, Aushev, A M, Bakich, V, Balagura, E, Barberio, W, Bartel, A, Bay, U, Bitenc, I, Bizjak, S, Blyth, A, Bozek, M, Bracko, T E, Browder, P, Chang, A, Chen, B G, Cheon, Y, Choi, Y K, Choi, A, Chuvikov, J, Dalseno, M, Danilov, M, Dash, J, Dragic, S, Eidelman, S, Fratina, N, Gabyshev, T, Gershon, A, Go, G, Gokhroo, B, Golob, A, Gorisek, M, Grosse Perdekamp, H C, Ha, K, Hayasaka, H, Hayashii, M, Hazumi, T, Hokuue, Y, Hoshi, S, Hou, W-S, Hou, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, M, Iwasaki, Y, Iwasaki, J H, Kang, P, Kapusta, N, Katayama, H, Kawai, T, Kawasaki, H R, Khan, H, Kichimi, S K, Kim, S M, Kim, R, Kulasiri, R, Kumar, C C, Kuo, A, Kuzmin, Y-J, Kwon, J S, Lange, J, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, D, Liventsev, F, Mandl, T, Matsumoto, A, Matyja, W, Mitaroff, H, Miyake, H, Miyata, Y, Miyazaki, R, Mizuk, T, Mori, I, Nakamura, E, Nakano, M, Nakao, Z, Natkaniec, S, Nishida, O, Nitoh, A, Ogawa, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, H, Ozaki, P, Pakhlov, H, Palka, C W, Park, H, Park, N, Parslow, L S, Peak, R, Pestotnik, L E, Piilonen, Y, Sakai, N, Sato, N, Satoyama, T, Schietinger, O, Schneider, J, Schümann, K, Senyo, M E, Sevior, M, Shapkin, H, Shibuya, A, Somov, N, Soni, R, Stamen, S, Stanic, M, Staric, K, Sumisawa, F, Takasaki, K, Tamai, M, Tanaka, G N, Taylor, Y, Teramoto, X C, Tian, T, Tsukamoto, S, Uehara, T, Uglov, S, Uno, P, Urquijo, Y, Usov, G, Varner, S, Villa, C C, Wang, C H, Wang, Y, Watanabe, E, Won, Q L, Xie, B D, Yabsley, A, Yamaguchi, Y, Yamashita, M, Yamauchi, J, Ying, Y, Yusa, L M, Zhang, Z P, Zhang, V, Zhilich, and D, Zürcher

Abstract

The Collins effect connects transverse quark spin with a measurable azimuthal dependence in the yield of hadronic fragments around the quark's momentum vector. Using two different reconstruction methods, we find evidence of statistically significant azimuthal asymmetries for charged pion pairs in e(+)e(-) annihilation at a center-of-mass energy of 10.52 GeV, which can be attributed to a transverse polarization of the primordial quarks. The measurement was performed using a sample of 79 x 10(6) hadronic events collected with the Belle detector.

Published
2006

47. Observation ofe+e−→π+π−π0χbJand Search forXb→ωϒ(1S)ats=10.867 GeV

Author

A. Garmash, S. E. Vahsen, S. Uno, G. Bonvicini, A. Vinokurova, D. Cinabro, Z. P. Zhang, P. Krokovny, K. Cho, Y. Iwasaki, Y. J. Kwon, B. R. Ko, T. K. Pedlar, A. Moll, D. Semmler, M. Steder, R. Mussa, S. Uehara, P. Chang, M. Watanabe, B.A. Shwartz, O. Schneider, H. Hayashii, A. Drutskoy, A. Zupanc, S. Nishida, A. Ishikawa, A.S. Kuzmin, M. Nakao, T. A. Shibata, H. Miyata, G. Schnell, T. Iijima, J. Libby, O. Grzymkowska, C. H. Wang, P. Križan, K. Trabelsi, A. M. Bakich, S.I. Eidelman, T. Uglov, Vladimir Zhulanov, R. Glattauer, Vikas Bansal, Z. Natkaniec, T. Sumiyoshi, Yukinori Sato, C. P. Shen, E. Solovieva, M. E. Sevior, K. Hayasaka, A. Abdesselam, M. Uchida, V. Gaur, J. G. Shiu, X. H. He, E. Nakano, T. Sanuki, J. Dalseno, Yoshinobu Unno, N. Gabyshev, D. Červenkov, Hiroaki Aihara, L. E. Piilonen, S. Okuno, G. Pakhlova, T. Aushev, M. J. Kim, V. Chobanova, D. Liventsev, M. Z. Wang, K. Kinoshita, U. Tamponi, C. Z. Yuan, A.L. Sibidanov, M. Starič, Phillip Urquijo, Peter Kodys, T. Ferber, M. Ritter, T. Kumita, S. Yashchenko, Y. Teramoto, S. Ogawa, C. Van Hulse, T. Julius, R. Chistov, R. Ayad, G. S. Varner, K. Sumisawa, Frank Simon, Andrey Sokolov, Seema Bahinipati, M. Bračko, P. Wang, T. Nanut, S. Sandilya, B. G. Cheon, James E. Fast, J. Yamaoka, M. N. Wagner, J. Haba, R. Itoh, D. Y. Kim, Y. Yook, S. Korpar, S. Wehle, T. Kawasaki, V.E. Shebalin, I. Adachi, Yongsun Kim, C. Schwanda, H. Farhat, Marko Petrič, K. Senyo, Y. S. Sohn, V.N. Zhilich, I. Jaegle, K. Miyabayashi, E. Nedelkovska, H. Nakazawa, D. Matvienko, D. M. Asner, G. Tatishvili, Z. Drásal, P. Pakhlov, Mikhail Danilov, K. Chilikin, R. Pestotnik, H. Park, A. Bozek, K. M. Williams, A. Chen, V.M. Aulchenko, E. Kato, A. Rostomyan, F. Thorne, V. Chekelian, R. Gillard, G. B. Mohanty, Y. Ban, R. Mizuk, Y. Yusa, S. K. Choi, Yang Li, Y. Choi, N. K. Nisar, L. Santelj, Y. Sakai, Y. M. Goh, Y. Watanabe, B. Bhuyan, A.E. Bondar, T. E. Browder, Kiyoshi Tanida, J. S. Lange, S. Ganguly, Z. Doležal, X. L. Wang, V. Savinov, W. S. Hou, V. Vorobyev, K. K. Joo, E. Won, and P. Vanhoefer

Subjects
Physics, Particle physics, KEKB, Electron–positron annihilation, Analytical chemistry, Pi, General Physics and Astronomy, Invariant mass, Omega
Abstract

The e(+)e(-) -> pi(+)pi(-) pi(0)chi(bj) ( J = 0, 1, 2) processes are studied using a 118 fb(-1) data sample acquired with the Belle detector at a center-of-mass energy of 10.867 GeV. Unambiguous pi(+)pi(-) pi(0)chi(bj) ( J = 1, 2), omega chi(b1) signals are observed, and indication for omega chi(b2) is seen, both for the first time, and the corresponding cross section measurements are presented. No significant pi(+)pi(-) pi(0)chi(b0) or omega chi(b0) signals are observed, and 90% confidence level upper limits on the cross sections for these two processes are obtained. In the pi(+)pi(-) pi(0) invariant mass spectrum, significant non-omega signals are also observed. We search for the X(3872)-like state (named X-b) decaying into omega Upsilon(1S); no significant signal is observed with a mass between 10.55 and 10.65 GeV= c(2).

Published
2014

48. Observation of e+e- → π+π-π(0)(χbJ) and Search for X(b) → ωϒ(1S) at sqrt[s] = 10.867 GeV

Author

X H, He, C P, Shen, C Z, Yuan, Y, Ban, A, Abdesselam, I, Adachi, H, Aihara, D M, Asner, V, Aulchenko, T, Aushev, R, Ayad, S, Bahinipati, A M, Bakich, V, Bansal, B, Bhuyan, A, Bondar, G, Bonvicini, A, Bozek, M, Bračko, T E, Browder, D, Cervenkov, P, Chang, V, Chekelian, A, Chen, B G, Cheon, K, Chilikin, R, Chistov, K, Cho, V, Chobanova, S-K, Choi, Y, Choi, D, Cinabro, J, Dalseno, M, Danilov, Z, Doležal, Z, Drásal, A, Drutskoy, S, Eidelman, H, Farhat, J E, Fast, T, Ferber, V, Gaur, N, Gabyshev, S, Ganguly, A, Garmash, R, Gillard, R, Glattauer, Y M, Goh, O, Grzymkowska, J, Haba, K, Hayasaka, H, Hayashii, W-S, Hou, T, Iijima, A, Ishikawa, R, Itoh, Y, Iwasaki, I, Jaegle, K K, Joo, T, Julius, E, Kato, T, Kawasaki, D Y, Kim, M J, Kim, Y J, Kim, K, Kinoshita, B R, Ko, P, Kodyš, S, Korpar, P, Križan, P, Krokovny, T, Kumita, A, Kuzmin, Y-J, Kwon, J S, Lange, Y, Li, J, Libby, D, Liventsev, D, Matvienko, K, Miyabayashi, H, Miyata, R, Mizuk, G B, Mohanty, A, Moll, R, Mussa, E, Nakano, M, Nakao, H, Nakazawa, T, Nanut, Z, Natkaniec, E, Nedelkovska, N K, Nisar, S, Nishida, S, Ogawa, S, Okuno, P, Pakhlov, G, Pakhlova, H, Park, T K, Pedlar, R, Pestotnik, M, Petrič, L E, Piilonen, M, Ritter, A, Rostomyan, Y, Sakai, S, Sandilya, L, Santelj, T, Sanuki, Y, Sato, V, Savinov, O, Schneider, G, Schnell, C, Schwanda, D, Semmler, K, Senyo, M E, Sevior, V, Shebalin, T-A, Shibata, J-G, Shiu, B, Shwartz, A, Sibidanov, F, Simon, Y-S, Sohn, A, Sokolov, E, Solovieva, M, Starič, M, Steder, K, Sumisawa, T, Sumiyoshi, U, Tamponi, K, Tanida, G, Tatishvili, Y, Teramoto, F, Thorne, K, Trabelsi, M, Uchida, S, Uehara, T, Uglov, Y, Unno, S, Uno, P, Urquijo, S E, Vahsen, C, Van Hulse, P, Vanhoefer, G, Varner, A, Vinokurova, V, Vorobyev, M N, Wagner, C H, Wang, M-Z, Wang, P, Wang, X L, Wang, M, Watanabe, Y, Watanabe, S, Wehle, K M, Williams, E, Won, J, Yamaoka, S, Yashchenko, Y, Yook, Y, Yusa, Z P, Zhang, V, Zhilich, V, Zhulanov, and A, Zupanc

Abstract

The e(+)e(-) → π(+)π(-)π(0)χ(bJ) (J = 0,1,2) processes are studied using a 118 fb(-1) data sample acquired with the Belle detector at a center-of-mass energy of 10.867 GeV. Unambiguous π(+)π(-)π(0)χ(bJ) (J = 1,2), ωχ(b1) signals are observed, and indication for ωχ(b2) is seen, both for the first time, and the corresponding cross section measurements are presented. No significant π(+)π(-)π(0)χ(b0) or ωχ(b0) signals are observed, and 90% confidence level upper limits on the cross sections for these two processes are obtained. In the π(+)π(-)π(0) invariant mass spectrum, significant non-ω signals are also observed. We search for the X(3872)-like state (named X(b)) decaying into ωϒ(1S); no significant signal is observed with a mass between 10.55 and 10.65 GeV/c(2).

Published
2014

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

Author

A. Garmash, M. Steder, V.N. Zhilich, G. Schnell, M. J. Kim, T. Iijima, M. Starič, I. Jaegle, K. Miyabayashi, L. E. Piilonen, T. Kumita, T. Kuhr, S. Nishida, H. K. Park, Y. Yamashita, E. Nedelkovska, A. M. Bakich, Z. Natkaniec, G. Pakhlova, I. Adachi, H. Nakazawa, D. Cinabro, A. Rostomyan, B. Golob, S. Yashchenko, J. B. Kim, T. Julius, V. Chekelian, H. J. Kim, N. Gabyshev, D. Červenkov, R. Chistov, S. Ganguly, Chang Liu, Y. Iwasaki, Y. J. Kwon, Jung-Hyun Kim, O. Schneider, D. A. Epifanov, B. Bhuyan, Sunmin Ryu, E. Won, T. Sumiyoshi, M. Niiyama, T. E. Browder, A. Zupanc, Sang Hoon Lee, H. Farhat, M. Feindt, A.S. Kuzmin, Yang Li, J. Klucar, T. Sanuki, Yongsun Kim, S. L. Olsen, S. Uno, C. Schwanda, T. Iwashita, Hitoshi Yamamoto, P. Vanhoefer, Y. Choi, O. Nitoh, R. Gillard, N. K. Nisar, K. Trabelsi, V. Savinov, H. Hayashii, K. Dutta, L. Santelj, V. Gaur, I. S. Cho, C. P. Shen, M. C. Chang, S. Ogawa, A.L. Sibidanov, M. Nakao, W. S. Hou, Y. S. Sohn, Z. Drásal, J. G. Shiu, J. Dalseno, T. Aushev, X. H. He, Y. M. Goh, Hiroaki Aihara, T. Ferber, V. Vorobyev, J. MacNaughton, Y. Kato, C. H. Wang, Phillip Urquijo, D. Dutta, R. Mussa, P. Pakhlov, Y. Teramoto, S. Uehara, J. Li, A. Ishikawa, M. Ritter, M. Bračko, J. Haba, E. Kato, D. Y. Kim, H. Sahoo, Mikhail Danilov, M. Shapkin, M. Röhrken, K. Chilikin, Z. P. Zhang, C. W. Park, P. Križan, T. A. Shibata, H. Miyata, M. Watanabe, G. Bonvicini, Y. Hoshi, S.I. Eidelman, K. Kinoshita, U. Tamponi, H. Park, A. Bozek, J. Libby, R. Pestotnik, K. Hayasaka, C. Bartel, B. G. Cheon, R. Glattauer, A. Vinokurova, G. B. Mohanty, Andrey Sokolov, V.M. Aulchenko, Yueh-Feng Liu, H. Kichimi, R. Mizuk, K. M. Williams, K. Belous, Kevin Varvell, P. Krokovny, J. H. Kang, M. Nayak, S. Korpar, Y. Watanabe, B.A. Shwartz, K. Cho, Y. Usov, Vladimir Zhulanov, E. Nakano, M. E. Sevior, B. Kronenbitter, W. Ostrowicz, James E. Fast, B. R. Ko, Samo Stanič, C. Van Hulse, Yoshinobu Unno, Y. Yook, T. K. Pedlar, A. Moll, D. Semmler, T. Saito, Peter Kodys, K. Senyo, M. Uchida, V. Chobanova, G. Tatishvili, D. Liventsev, G. S. Varner, R. Itoh, P. Wang, M. N. Wagner, Marko Petrič, H. J. Hyun, D. M. Asner, T. Kawasaki, S. K. Choi, S. Sandilya, A.E. Bondar, Kiyoshi Tanida, A. Bala, Z. Doležal, X. L. Wang, O. Seon, Frank Simon, Y. Sakai, M. Huschle, E. Solovieva, and Z. Q. Liu

Subjects
Physics, Branching fraction, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy, Atomic physics, Absolute branching fractions, Asymmetric energy, Belle detectors, Branching fractions, Data sample, Lambda, Nuclear physics, Baryon, Charmed baryons, KEKB, Pi, High Energy Physics::Experiment, Bar (unit)
Abstract

We present the first model-independent measurement of the absolute branching fraction of the Lambda(+)(c) -> pK(-)pi(+)decay using a data sample of 978 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The number of Lambda(+)(c) baryons is determined by reconstructing the recoiling D(*)(-)(p) over bar pi(+)system in events of the type e(+)e(-) -> D(*)(-)(p) over bar pi(+)Lambda(+)(c). The branching fraction is measured to be B(Lambda(+)(c) -> pK(-)pi(+)) = (6.84 +/- 0.24(-0.27)(+0.21))%, where the first and second uncertainties are statistical and systematic, respectively.

Published
2014

50. Search forCPViolation inD0→π0π0Decays

Author

B. G. Cheon, S. E. Vahsen, G. Schnell, M. Z. Wang, K. Kinoshita, Andrey Sokolov, T. Iijima, B. Golob, Y. Iwasaki, Y. J. Kwon, J. H. Kang, G. Tatishvili, T. Kuhr, N. K. Nisar, J. S. Lange, V. M. Aulchenko, D. Cinabro, D. Epifanov, K. Belous, S. Korpar, O. Schneider, K. M. Williams, L. E. Piilonen, W. S. Hou, Jung-Hyun Kim, V. Bhardwaj, T. K. Pedlar, A. Moll, A. Bala, G. Pakhlova, K. Arinstein, V. V. Zhulanov, Alexei Kuzmin, D. Semmler, M. N. Wagner, K. Trabelsi, B. Shwartz, G. Bonvicini, C. Kiesling, J. Libby, Z. Doležal, M. E. Sevior, Z. P. Zhang, T. Iwashita, A. Abdesselam, Y. Yook, T.-A. Shibata, Marko Petrič, P. Krokovny, K. Cho, T. Peng, M. Bračko, J. E. Fast, T. Aushev, S. Yashchenko, R. Mussa, E. Won, T. E. Browder, H. Farhat, P.A. Lukin, Yukinori Sato, J. G. Shiu, D. Matvienko, S. Sandilya, S. Okuno, A. M. Bakich, T. Ferber, M. J. Kim, P. Vanhoefer, J. B. Kim, E. Ribežl, M. Danilov, Phillip Urquijo, M. Starič, N. Gabyshev, D. Červenkov, A. Ishikawa, J. Yamaoka, Kevin Varvell, Y. Teramoto, P. Križan, D. M. Asner, O. Seon, Frank Simon, H. Miyata, Y. Hoshi, M. Uchida, H. Aihara, Y. S. Sohn, Y. Usov, V.N. Zhilich, V. Chobanova, Samo Stanič, R. Ayad, D. Liventsev, C. H. Wang, H. Hayashii, S. Eidelman, G. S. Varner, A. Bobrov, M. Shapkin, C. B. Van Hulse, B. Macek, E. Nakano, P. Pakhlov, Tariq Aziz, R. Itoh, T. Sumiyoshi, L. Li Gioi, H. K. Park, Y. Yamashita, A. Rostomyan, P. Wang, M. Röhrken, K. Chilikin, Y. J. Kim, Seema Bahinipati, K. Miyabayashi, V. Gaur, Martin Ritter, Y. Choi, D. Y. Kim, Byeong Rok Ko, I. Adachi, M. Nakao, E. Nedelkovska, T. Sanuki, T. Uglov, T. Hara, L. Santelj, J. Dalseno, Dipanwita Dutta, H. Park, A. Bozek, K. Senyo, T. Kawasaki, A. Drutskoy, Y. Sakai, A. J. Schwartz, Y. Watanabe, Y. M. Goh, S. Ogawa, A. Garmash, V. Bansal, E. Solovieva, S. H. Lee, R. Pestotnik, Z. Drásal, M. Steder, P. K. Behera, A. Zupanc, O. Nitoh, X. H. He, J. Stypula, R. Mizuk, Peter Kodys, Sanmay Ganguly, Rahul Kumar, G. B. Mohanty, V.E. Shebalin, M. Nayak, S. Uno, C. Schwanda, and K. Dutta

Subjects
Physics, General Physics and Astronomy
Published
2014

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