Author: "P Kapusta" / Topic: high energy physics::experiment - Searchworks@Jio Institute Digital Library Search Results

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101 results on '"P Kapusta"'

1. The Belle II vertex detector integration

Author: H. Windel, V. Babu, S. Skambraks, P. Mammini, Ti. Baroncelli, M. Kaleta, C. Koffmane, M. Hensel, G. Batignani, J. Stypula, Prafulla Kumar Behera, V. Chekelian, C. La Licata, C. Wessel, H. Aihara, D. Münchow, F. Müller, M. Heck, J. Sanchez, F. Abudinen, AL Virto, F. Mueller, Oscar Alonso, R. Thalmeier, D. Klose, I. J. Watson, Soumen Paul, U. Packheiser, M. Ceccanti, N. Sato, Dipak Kumar Sahoo, D. Moya, B. Scavino, M. Fras, K. K. Rao, Takeo Higuchi, R. Richter, M. Albalawi, K. Nakamura, T. Kohriki, L. Zani, S. N. Mayekar, Svd Collaborations, Jakub Kandra, K. Prasanth, L. Macharski, S. Bacher, T. Morii, S. Bettarini, Jelena Ninkovic, Michael Ritzert, L. Bosisio, Jochen Dingfelder, Florian Schopper, Markus Friedl, D. Esperante, Ladislav Andricek, C. Kiesling, M. Boronat, H. Park, A. Bozek, Satoshi Tanaka, Tariq Aziz, Concettina Sfienti, C. W. Joo, R. Ayad, Seema Bahinipati, F. Lütticke, M. De Nuccio, U. Gebauer, Benjamin Schwenker, Zhiyong Liu, Steven Williams, Z. Natkaniec, Norbert Wermes, Carlos Marinas, B. Bhuyan, C. Schwanda, Shih-Chang Lee, T. Kuhr, G. Rizzo, W. Ostrowicz, S. Krivokuca, Frank Simon, B. Paschen, Maiko Takahashi, S. Vogt, H. G. Moser, R. Stever, Angel Dieguez, L. Gioi, F. Buchsteiner, Gerhard Schaller, H. Tanigawa, M. Gabriel, M. Hoek, A. Paladino, Rakesh Kumar, Gerhard Liemann, D. Getzkow, Peter Kvasnicka, B. Spruck, J.A.M. Grimaldo, Y. Onuki, K. H. Kang, T. Lueck, F. Poblotzki, S. Mccarney, P. K. Resmi, S. Schultschik, B. Gobbo, K. Lalwani, S. Rummel, D. Kittlinger, Ivan Peric, K. Gadow, Allen Caldwell, Martin Ritter, Dmytro Levit, Gagan Bihari Mohanty, To. Baroncelli, Keigo Hara, E. L. Barberio, F. Forti, L. Germic, U. Leis, A. Profeti, Tomasz Hemperek, S. Koike, B. Kisielewski, Marcel Vos, Peter Kodys, A. Bauer, P. Leitl, K. Ackermann, Ilya Komarov, Giulia Casarosa, H. Yin, Y. Soloviev, Jae-Young Lee, J. Fuster, Thomas Gessler, H. Schreeck, Phillip Urquijo, A. Martini, E. Paoloni, Carlos Lacasta, D. Červenkov, U. Stolzenberg, Pxd Belle Ii Depfet, L. Lanceri, I. Konorov, N. Dash, T. Czank, R. Blanco, G. N. Taylor, P. Wieduwilt, J. Suzuki, I. Rashevskaya, Hans Krüger, A. K. Basith, M. Rozanska, C. H. Wang, P. Kapusta, J. S. Lange, A. Rabusov, H. B. Jeon, Ivan Vila, A. Ishikawa, M. Schnecke, Filippo Bosi, T. Bilka, M. Watanabe, H. Ye, G. Caria, P. Gomis, E. Tafelmayer, M. Kumar, A. Frey, Jun Sasaki, J. Libby, K. Lautenbach, B. Deschamps, R. Sedlmeyer, Shoichi Watanuki, V. Bertacchi, Z. Doležal, S. Reiter, N. Kambara, Christian Irmler, C. Camien, T. Tsuboyama, J. Wiechczynski, Peter Fischer, W. Kun, P. Ahlburg, Wolfgang Kuhn, John Webb, L. Vitale, J. Zhao, Y. Bai, C. Niebuhr, European Commission, Ministerio de Economía y Competitividad (España), Ministry of Education, Culture, Sports, Science and Technology (Japan), Japan Society for the Promotion of Science, WPI Immunology Frontier Research Center (Japan), Federal Ministry of Science, Research and Economy (Austria), Australian Research Council, Ministry of Education, Youth and Sports (Czech Republic), Government of Czech Republic, Department of Science and Technology (India), Department of Atomic Energy (India), National Research Foundation of Korea, Ministry of Science and Higher Education (Poland), Federal Ministry of Science, Research and Economy (Germany), Kodyš, P., Abudinen, F., Ackermann, K., Ahlburg, P., Aihara, H., Albalawi, M., Alonso, O., Andricek, L., Ayad, R., Aziz, T., Babu, V., Bacher, S., Bahinipati, S., Bai, Y., Barberio, E., Baroncelli, Ti., Baroncelli, To., Basith, A. K., Batignani, G., Bauer, A., Behera, P. K., Bertacchi, V., Bettarini, S., Bhuyan, B., Bilka, T., Blanco, R., Bosi, F., Boronat, M., Bosisio, L., Bozek, A., Buchsteiner, F., Camien, C., Caldwell, A., Caria, G., Casarosa, G., Ceccanti, M., Červenkov, D., Chekelian, V., Czank, T., Dash, N., De Nuccio, M., Deschamps, B., Dieguez, A., Dingfelder, J., Doležal, Z., Esperante, D., Fischer, P., Forti, F., Fras, M., Frey, A., Friedl, M., Fuster, J., Gabriel, M., Gadow, K., Gebauer, U., Germic, L., Gessler, T., Getzkow, D., Gioi, L., Gobbo, B., Gomis, P., Grimaldo, J. A. M., Hara, K., Heck, M., Hemperek, T., Hensel, M., Higuchi, T., Hoek, M., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kaleta, M., Kandra, J., Kambara, N., Kang, K. H., Kapusta, P., Kiesling, C., Kisielewski, B., Kittlinger, D., Klose, D., Koffmane, C., Kohriki, T., Koike, S., Komarov, I., Konorov, I., Krivokuca, S., Krüger, H., Kuhr, T., Kühn, W., Kumar, M., Kumar, R., Kun, W., Kvasnička, P., La Licata, C., Lacasta, C., Lalwani, K., Lanceri, L., Lange, J. S., Lautenbach, K., Lee, J. Y., Lee, S. C., Leis, U., Leitl, P., Levit, D., Libby, J., Liemann, G., Liu, Z., Lueck, T., Lütticke, F., Macharski, L., Mammini, P., Mariñas, C., Martini, A., Mayekar, S. N., Mccarney, S., Mohanty, G. B., Morii, T., Moser, H. G., Moya, D., Mueller, F. J., Müller, F., Münchow, D., Nakamura, K. R., Natkaniec, Z., Niebuhr, C., Ninkovic, J., Onuki, Y., Ostrowicz, W., Packheiser, U., Paladino, A., Paoloni, E., Park, H., Paschen, B., Paul, S., Peric, I., Poblotzki, F., Prasanth, K., Profeti, A., Rabusov, A., Rashevskaya, I., Rao, K. K., Reiter, S. P., P. K., Resmi, Richter, R., Ritter, M., Ritzert, M., Rizzo, G., Rozanska, M., Rummel, S., Sahoo, D., Sanchez, J. G., Sasaki, J., Sato, N., Scavino, B., Schaller, G., Schnecke, M., Schopper, F., Schreeck, H., Schultschik, S., Schwanda, C., Schwenker, B., Sedlmeyer, R., Sfienti, C., Simon, F., Skambraks, S., Soloviev, Y., Spruck, B., Stever, R., Stolzenberg, U., Stypula, J., Suzuki, J., Tafelmayer, E., Takahashi, M., Tanaka, S., Tanigawa, H., Taylor, G. N., Thalmeier, R., Tsuboyama, T., Urquijo, P., Vila, I., Virto, A. L., Vitale, L., Vogt, S., Vos, M., Wang, C., Watanuki, S., Watanabe, M., Watson, I. J., Webb, J., Wermes, N., Wessel, C., Wiechczynski, J., Wieduwilt, P., Williams, S., Windel, H., Ye, H., Yin, H., Zani, L., and Zhao, J.
Subjects: Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Silicon sensor, Phase (waves), Computer Science::Computational Geometry, 7. Clean energy, 01 natural sciences, law.invention, Nuclear physics, Belle II, Data acquisition, Pixel detector, Strip detector, Vertex detector, Instrumentation, law, 0103 physical sciences, Collider, Nuclear and High Energy Physic, Physics, Interconnection, Pixel, 010308 nuclear & particles physics, Detector, data acquisition, pixel detector, silicon sensor, strip detector, vertex detector, Upgrade, High Energy Physics::Experiment, Focus (optics)
Abstract: Belle II DEPFET, PXD, and SVD Collaborations: et al., The Belle II experiment comes with a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric ee collider with energies tuned to ϒ(4S) resonance s=10.588 GeV. The accelerator has successfully completed the first phase of commissioning in 2016 and the first electron–positron collisions in Belle II took place in April 2018. Belle II features a newly designed silicon vertex detector based on DEPFET pixel and double-sided strip layers. Currently, a subset of the vertex detector is installed (Phase 2 of the experiment). Installation of the full detector (Phase 3) will be completed by the end of 2018. This paper describes the Phase 2 arrangement of the Belle II silicon vertex detector, with focus on the interconnection of detectors and their integration with the software framework of Belle II. Alignment issues are discussed based on detector simulations and first acquired data., This work is supported by MSCA-RISE, European Union project JENNIFER (EU grant n. 644294), MEXT, Japan, WPI, and JSPS (Japan); ARC (Australia); BMWFW (Austria); MSMT, Czech Republic, GAUK 404316 (Czech Republic); AIDA-2020 (Germany); DAE, India and DST (India); INFN (Italy); NRF-2016K1A3A7A09005605 and RSRI (Korea); MNiSW (Poland); Federal Ministry of Education and Research (BMBF, Germany); and MINECO, Spain grant FPA2015-71292-C2-1-P (Spain).
Published: 2019

2. Particle Identification in Belle II Silicon Vertex Detector

Author: J. Libby, H. Aihara, Takeo Higuchi, T. Kohriki, Rakesh Kumar, K. H. Kang, Markus Friedl, Seema Bahinipati, J. Serrano, G. B. Mohanty, W. Ostrowicz, A. B. Kaliyar, S. Das, S. Hazra, Ya-Qiu Jin, Peter Kvasnicka, Y. Onuki, Yonghu Chen, E. Paoloni, Tariq Aziz, C. W. Joo, A. Paladino, F. Forti, I. Ripp-Baudot, S. Bacher, Shih-Chang Lee, H. B. Jeon, L. Corona, M. Kaleta, Y. Uematsu, G. Polat, J. Baudot, M. Kumar, A. Ishikawa, K. Nakamura, J. Suzuki, F. Buchsteiner, R. Thalmeier, Keigo Hara, B. Gobbo, K. Lalwani, T. Tsuboyama, Jakub Kandra, N. Rout, C. Schwanda, J. Wiechczynski, G. Rizzo, H. Park, A. Bozek, N. Dash, S. N. Mayekar, Satoshi Tanaka, Y. B. Li, G. Dujany, G. Batignani, S. Bettarini, K. Adamczyk, T. Morii, John Webb, H. Tanigawa, K. Wan, P. Kapusta, L. Vitale, H. Yin, C. La Licata, S. Halder, T. Bilka, Peter Kodys, Prafulla Kumar Behera, G. Casarosa, T. Czank, Z. Natkaniec, Christian Irmler, K. K. Rao, O. Verbycka, Dipak Kumar Sahoo, L. Zani, E. Ganiev, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Silicon, vertex detector, measurement methods, BELLE, dE/dx\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$${dE\!/\!dx}$$\end{document}, 01 natural sciences, 7. Clean energy, Particle identification, Silicon vertex detector, charged particle: energy loss, Nuclear physics, particle identification: performance, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Detectors and Experimental Techniques, 010306 general physics, Physics, 010308 nuclear & particles physics, PID, Upsilon(10570), +D0+pi%2B%22">D*(2010)+ --> D0 pi+, semiconductor detector: microstrip, High Energy Physics::Experiment, +K-+pi%2B%22">D0 --> K- pi+, numerical calculations: Monte Carlo, +p+pi%22">Lambda --> p pi
Abstract: International audience; We report a particle identification (PID) tool developed using energy-loss information in the silicon-strip vertex detector (SVD) of Belle II for charged pions, kaons, and protons using $D^{* + } \to D^{0}[ \to K^{ - }\pi ^{ + }]\pi ^{ + }$ and $\Lambda \to p\pi ^{ - }$ decay samples. The study is based on e^+e^− collision data recorded at the $\Upsilon (4S)$ resonance by Belle II and the results are compared with that of a Monte Carlo sample. The introduction of additional information from the SVD is found to improve the overall PID performance in the low-momentum region.
Published: 2021

3. Belle II pixel detector: Performance of final DEPFET modules

Author: B. Deschamps, R. Sedlmeyer, Z. Doležal, S. Mccarney, S. Reiter, F. Lütticke, Zhiyong Liu, U. Packheiser, T. Kuhr, K. Lautenbach, P. Leitl, K. Ackermann, S. Krivokuca, L. Macharski, Belle-II Depfet, V. Babu, S. Skambraks, R. Ayad, B. Spruck, Allen Caldwell, S. Vogt, Thomas Gessler, Oscar Alonso, C. H. Wang, Martin Ritter, Dmytro Levit, Jochen Dingfelder, Florian Schopper, B. Kisielewski, H. G. Moser, Ivan Peric, K. Gadow, M. Hensel, C. Niebuhr, U. Leis, Angel Dieguez, Tomasz Hemperek, Peter Kvasnicka, H. Ye, Carlos Lacasta, M. Fras, A. Bozek, Marcel Vos, Ivan Vila, P. Wieduwilt, U. Stolzenberg, J. Zhao, D. Getzkow, H. Schreeck, P. Kapusta, V. Chekelian, C. Camien, A. Rabusov, Y. Bai, P. Ahlburg, Hans Krüger, M. Schnecke, Wolfgang Kuhn, Soumen Paul, T. Bilka, Frank Simon, L. Gioi, D. Moya, B. Scavino, D. Esperante, Ladislav Andricek, A. Frey, J. Fuster, S. Huber, C. Kiesling, I. Konorov, R. Stever, P. Gomis, E. Tafelmayer, Concettina Sfienti, R. Blanco, Jelena Ninkovic, Gerhard Schaller, B. Paschen, L. Germic, F. Abudinen, Carlos Marinas, Michael Ritzert, U. Gebauer, C. Koffmane, F. J. Müller, Maiko Takahashi, M. Hoek, F. Poblotzki, C. Wessel, D. Münchow, F. Müller, Y. Soloviev, S. Rummel, D. Kittlinger, J. S. Lange, Peter Kodys, M. Heck, J. Sanchez, R. Richter, Gerhard Liemann, M. Boronat, Norbert Wermes, H. Windel, D. Klose, M. Albalawi, Jakub Kandra, AL Virto, M. Gabriel, Benjamin Schwenker, Ministry of Education, Culture, Sports, Science and Technology (Japan), Japan Society for the Promotion of Science, World Premier International Research Center (Japan), European Commission, Ministry of Education, Youth and Sports (Czech Republic), Federal Ministry of Education and Research (Germany), and Ministerio de Economía y Competitividad (España)
Subjects: Physics, Nuclear and High Energy Physics, Luminosity (scattering theory), Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Resolution (electron density), Detector, 01 natural sciences, Optics, 0103 physical sciences, PXD, Belle II, High Energy Physics::Experiment, Field-effect transistor, Vertex detector, Impact parameter, 010306 general physics, business, Instrumentation, DEPFET, Pixel detector
Abstract: Belle-II DEPFET and PXD Collaboration: et al., A DEpleted P-channel Field Effect Transistor (DEPFET) based pixel detector was developed for the Belle II VerteX Detector (VXD). It is designed to achieve a good impact parameter resolution better than 15𝜇m at the very high luminosity conditions of this experiment. In the first half of 2018 four final production modules have been deployed in the commissioning run of the detector and their performance is discussed., This work is supported by MEXT, WPI, and JSPS (Japan); MSMT, GAUK 404316, MSCA-RISE project JENNIFER (EU grant n. 644294) (Czech Republic); Federal Ministry of Education and Research (BMBF, Germany) and MINECO grant FPA2015-71292-C2-1-P (Spain).
Published: 2020

4. Beam background study for the Belle II Silicon Vertex Detector

Author: H. Aihara, S. Watanuki, T. Aziz, W. Ostrowicz, B. Gobbo, K. Lalwani, T. Lueck, G. Casarosa, T. Czank, Surajit Maity, H. B. Jeon, H. Park, L. Lanceri, H. Nakayama, F. Buchsteiner, T. Zhang, Takeo Higuchi, G. Dujany, Rajeev Kumar, L. Corona, Yonghu Chen, Markus Friedl, T. Tsuboyama, S. Hazra, S. E. Vahsen, Prafulla Kumar Behera, H. Tanigawa, J. Wiechczynski, A. B. Kaliyar, Y. Onuki, A. Bozek, Keigo Hara, L. Santelj, P. Kodyš, K. Nakamura, Z. Natkaniec, Y. Uematsu, J. Suzuki, N. Dash, Jakub Kandra, G. Batignani, N. Rout, J. A. Mora Grimaldo, Christoph Schwanda, Satoshi Tanaka, John Webb, Z. Doležal, L. Vitale, K. Wan, P. Kapusta, I. Ripp-Baudot, M. Kumar, F. Forti, K. K. Rao, O. Verbycka, C. La Licata, Shih-Chang Lee, J. Libby, S. Halder, T. Morii, T. Bilka, D. Červenkov, S. Bettarini, Christian Irmler, E. Ganiev, A. Ishikawa, A. Paladino, Peter Kvasnicka, M. Kaleta, R. Thalmeier, K. Adamczyk, H. Yin, E. Paoloni, N. Sato, G. B. Mohanty, S. N. Mayekar, K. H. Kang, G. de Marino, G. Rizzo, S. Das, J. Baudot, S. Bacher, T. Kohriki, C. W. Joo, Dipak Kumar Sahoo, L. Zani, Y. B. Li, S. Bahinipati, Tanigawa, H., Adamczyk, K., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Batignani, G., Baudot, J., Behera, P. K., Bettarini, S., Bilka, T., Bozek, A., Buchsteiner, F., Casarosa, G., Cervenkov, D., Chen, Y. Q., Corona, L., Czank, T., Das, S. B., Dash, N., de Marino, G., Dolezal, Z., Dujany, G., Forti, F., Friedl, M., Ganiev, E., Gobbo, B., Halder, S., Hara, K., Hazra, S., Higuchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Joo, C., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kapusta, P., Kodys, P., Kohriki, T., Kumar, M., Kumar, R., Kvasnicka, P., Licata, C. L., Lalwani, K., Lanceri, L., Lee, S. C., Li, Y. B., Libby, J., Lueck, T., Maity, S., Mayekar, S. N., Mohanty, G. B., Grimaldo, J. A. M., Morii, T., Nakamura, K. R., Nakayama, H., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Rao, K. K., Ripp-Baudot, I., Rizzo, G., Rout, N., Sahoo, D., Santelj, L., Sato, N., Schwanda, C., Suzuki, J., Tanaka, S., Thalmeier, R., Tsuboyama, T., Uematsu, Y., Vahsen, S. E., Verbycka, O., Vitale, L., Wan, K., Watanuki, S., Webb, J., Wiechczynski, J., Yin, H., Zani, L., Zhang, T., Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), and Belle-II SVD
Subjects: Nuclear and High Energy Physics, Meson, Silicon, vertex detector, chemistry.chemical_element, BELLE, 7. Clean energy, 01 natural sciences, law.invention, Beam background, Nuclear physics, Belle II, Silicon vertex detector, law, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Collider, Instrumentation, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Scattering, Detector, beam: background, chemistry, semiconductor detector, Physics::Accelerator Physics, High Energy Physics::Experiment, performance, Energy (signal processing), Beam (structure)
Abstract: The Belle II experiment aims to accumulate 50 ab−1 of e + e − collision data at the SuperKEKB asymmetric energy collider (Tsukuba, Japan). The first physics data using all Belle II detectors were taken in spring 2019. In the vast physics program of the Belle II experiment, the vertex detector plays a crucial role for the determination of the B -meson decay vertices. It consists of two inner layers of pixelated silicon detectors and four outer layers of double-sided silicon strip detectors (SVD). To achieve a design luminosity of 8 × 1 0 35 cm − 2 s − 1 , 40 times higher than the recorded luminosity of its predecessor, the SuperKEKB collider squeezes the beams to a vertical size of 50 nm (“nano-beam scheme”) and doubles the beam currents. Therefore, the detectors are required to tolerate intense beam induced background due to the very high luminosity. During the 2019 spring run we measured the occupancy rate in the SVD to estimate the level of the beam induced background. With the low initial luminosity, the observed beam induced background mostly originated from Touschek processes and beam-gas scattering within individual beams. Since these different background contributions depend differently on accelerator conditions, such as the beam current, beam size and pressure, they can be disentangled. We estimate the background rate of each contribution and compare them with simulated ones. The results enable us to predict the background levels at increased beam currents and luminosity in the coming years. They also hint at background mitigation measures for running at higher luminosity. In this proceeding we present the results of our study of the beam induced background in the SVD and the prospects for future operation.
Published: 2020

5. Test-beam results of a SOI pixel-detector prototype

Author: A. Fiergolski, P. Kapusta, Andreas Nürnberg, Dominik Dannheim, Roma Bugiel, Wojciech Kucewicz, D. Hynds, Szymon Bugiel, R.M. Münker, and Marek Idzik
Subjects: Physics, Nuclear and High Energy Physics, Pixel, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Silicon on insulator, 01 natural sciences, Noise (electronics), Computer Science::Other, Charge sharing, Optics, CMOS, 0103 physical sciences, ddc:530, High Energy Physics::Experiment, Wafer, Detectors and Experimental Techniques, 010306 general physics, business, Instrumentation, Image resolution, Particle Physics - Experiment
Abstract: This paper presents the test-beam results of a monolithic pixel-detector prototype fabricated in 200nm Silicon-On-Insulator (SOI) CMOS technology. The SOI detector was tested at the CERN SPS H6 beam line. The detector is fabricated on a 500 μ m thick high-resistivity float-zone n-type (FZ-n) wafer. The pixel size is 30 μ m × 30 μ m and its readout uses a source-follower configuration. The test-beam data are analysed in order to compute the spatial resolution and detector efficiency. The analysis chain includes pedestal and noise calculation, cluster reconstruction, as well as alignment and η -correction for non-linear charge sharing. The results show a spatial resolution of about 4.3 μ m.
Published: 2018

6. Data quality monitors of vertex detectors at the start of the Belle II experiment

Author: Oscar Alonso, Tomoyuki Kono, S. Bacher, M. Fras, S. Das, S. Skambraks, S. Watanuki, Zhen’An Liu, S. Reiter, S. Bettarini, Takeo Higuchi, U. Stolzenberg, T. Zhang, A. Paladino, Toru Tsuboyama, L. Corona, J. Baudot, S. Mccarney, Rainer Richter, Benjamin Schwenker, Concettina Sfienti, M. Hensel, Nils Braun, Boqun Wang, P. Kodyš, K. K. Rao, O. Verbycka, Lorenzo Vitale, Mikihiko Nakao, M. Heck, J. Sanchez, H. Windel, G. Batignani, Jesus Abudinen, Katsuro Nakamura, Michael Ritzert, K. Adamczyk, Eugenio Paoloni, Dipak Kumar Sahoo, K. Lautenbach, Daniel Greenwald, H. Yin, Y. Soloviev, I. Ripp-Baudot, C. Niebuhr, T. Czank, S. Y. Suzuki, U. Leis, Gerhard Liemann, C. W. Joo, M. Gabriel, S. Yamada, L. Zani, Jelena Ninkovic, Gaetano de Marino, Markus Friedl, Igor Konorov, L. Gioi, B. Deschamps, T. Kuhr, S. Krivokuca, Mohammed Albalawi, Gerhard Schaller, D. Klose, R. Sedlmeyer, Hua Ye, L. Macharski, B. Paschen, Y. B. Li, U. Gebauer, Stephan Paul, Allen Caldwell, Chiara La Licata, Chunhua Li, F. Buchsteiner, Oskar Hartbrich, Jakub Kandra, A. B. Kaliyar, Z. Doležal, N. Rout, Shuji Tanaka, Norbert Wermes, H. Aihara, Christian Irmler, C. Camien, Vladimir Chekelian, P. Leitl, K. Ackermann, Thomas Gessler, Souvik Maity, B. Spruck, R. Itoh, J.A.M. Grimaldo, D. Moya, S. Bahinipati, G. Dujany, Seokhee Park, R. Thalmeier, B. Kisielewski, Christian Koffmane, Jochen Dingfelder, Florian Schopper, F. Forti, Carlos Marinas, A. Ishikawa, E. Ganiev, B. Scavino, AL Virto, S. N. Mayekar, Pablo Gomis López, Maiko Takahashi, T. Kohriky, Y. Uematsu, Frank Simon, P. Wieduwilt, Z. Natkaniec, T. Aziz, M. Hoek, Daniel Esperante, D. Kittlinger, M. Kaleta, H. G. Moser, Angel Dieguez, Ladislav Andricek, Giulia Casarosa, R. Ayad, F. Poblotzki, L. Santelj, T. Morii, A. Bozek, H. Tanigawa, N. Sato, B. Gobbo, K. Lalwani, Jens Sören Lange, H. Schreeck, Qingyuan Liu, F. Müller, Martin Ritter, Dmytro Levit, K. H. Kang, N. Dash, Rajeev Kumar, D. Červenkov, Yeqi Chen, G. B. Mohanty, F. Luetticke, Hans Krüger, Peter Kvasnicˇka, A. Rabusov, C. Kiesling, C. Wessel, G. Rizzo, R. Stever, Y. Onuki, V. Babu, Yinghui Guan, Stefan M. Huber, G. Giakoustidis, Ivan Peric, K. Gadow, Koji Hara, James Webb, Marca Boronat, Tomasz Hemperek, Marcel Vos, Thomas Lück, Prafulla Kumar Behera, Seungcheol Lee, Juan Fuster, K. Wan, P. Kapusta, J. Wiechczynski, P. Ahlburg, M. Schnecke, S. Halder, T. Bilka, Christoph Schwanda, W. Ostrowicz, S. Stefkova, L. Lanceri, J. Libby, M. Kumar, A. Frey, S. Hazra, E. Tafelmayer, Felix Johannes Müller, H. B. Jeon, Ivan Vila, H. Park, S. Vogt, Carlos Lacasta, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Belle-II, PXD, SVD, DAQ, DQM, and software
Subjects: Physics::Instrumentation and Detectors, QC1-999, vertex detector, BELLE, quality: monitoring, 01 natural sciences, 7. Clean energy, programming, Silicon vertex detector, law.invention, Nuclear physics, semiconductor detector: pixel, law, 0103 physical sciences, Quality monitoring, [INFO]Computer Science [cs], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Collider, numerical calculations, detector: design, activity report, Physics, 010308 nuclear & particles physics, Detector, Upgrade, Full data, Data quality, Physics::Accelerator Physics, semiconductor detector: microstrip, High Energy Physics::Experiment, upgrade, Vertex detector, monitoring: on-line, performance
Abstract: The Belle II experiment features a substantial upgrade of the Belle detector and will operate at the SuperKEKB energy-asymmetric e+e− collider at KEK in Tsukuba, Japan. The accelerator completed its first phase of commissioning in 2016, and the Belle II detector saw its first electron-positron collisions in April 2018. Belle II features a newly designed silicon vertex detector based on double-sided strip layers and DEPFET pixel layers. A subset of the vertex detector was operated in 2018 to determine background conditions (Phase 2 operation). The collaboration completed full detector installation in January 2019, and the experiment started full data taking. This paper will report on the final arrangement of the silicon vertex detector part of Belle II with a focus on online monitoring of detector conditions and data quality, on the design and use of diagnostic and reference plots, and on integration with the software framework of Belle II. Data quality monitoring plots will be discussed with a focus on simulation and acquired cosmic and collision data.
Published: 2019

7. Measurement of the partial width of the decay of the Z0 into charm quark pairs

Author: U. Kruener-Marquis, M. L. Turluer, D. Reid, D. Bertrand, P. Siegrist, P. Vaz, I. Lippi, J-C. Marin, P. Lutz, E. K. Johansson, D. Bollini, P. B. Renton, W. S. C. Williams, Spyros Tzamarias, P. Poropat, Andromachi Tsirou, P. V. Chliapnikov, Andre Augustinus, A. Wehr, Edoardo Castelli, D. Radojicic, E. Menichetti, E. Fokitis, Paula Eerola, D.N. Edwards, S. Biagi, Tiziano Rovelli, M. Cresti, S. Gawne, Wolfgang Adam, M. Davenport, J. Pyyhtia, R. Keranen, L. Paper, E. I. Rosenberg, P. Frenkiel, A. Passeri, V.A. Uvarov, A. M. Segar, V. Nikolaenko, G. Trustram, Tord Ekelof, H. Staeck, P. Kapusta, G. E. Kalmus, M. Kostrikov, F. Grard, V. Vrba, S. Squarcia, F. Cao, E. N. Gazis, B. Korzen, R.B. Kadyrov, Bengt Lund-Jensen, G. Ekspong, Giovanni Darbo, F. Couchot, A. A. Rademakers, W. T. Meyer, Anthony Lincoln Read, A. P. Ostankov, J. Bjarne, H. Palka, Itzhak Roditi, Natale Demaria, Gueorgui Chelkov, A. Ruiz, G. R. Wilkinson, C. Vander Velde, Wojciech Kucewicz, L. Tortora, T. Tuuva, J. N. Jackson, S. O. Holmgren, M. Szczekowski, G. Galeazzi, A. Ferrer, L. S. Vertogradov, Borge Svane Nielsen, H. Burmeister, F. Barao, Roberto Cirio, L. K. Resvanis, F. Simonetto, E. Lieb, J. J. Lozano, M. H. Gros, U. Nnau-Lorzen, M. S. Bilenky, S. Ferroni, P. Bambade, K. Kurvinen, P.S.L. Booth, J. Lindgren, L.J. Carroll, W. Klempt, L. Lyons, O. Doll, Krzysztof Doroba, George Kalkanis, Chiara Meroni, Robert S. Brown, Tiziano Camporesi, Klaus Hamacher, M. Bonapart, Massimo Caccia, J. G. Loken, S. D. Hodgson, C. Bricman, A. Pullia, M. I. Laakso, L. O. Eek, R. C. Shellard, Josef Hrubec, M. A. Winter, S. Simonetti, J. Maillard, T. A. Filippas, T. Hofmokl, S. Gumenyuk, R. A. Brenner, Ariella Cattai, P. Ronschese, D. Benedic, E. Higon, R. Seufert, F. Scuri, J. Sanxhez, A. M. Wetherell, Th. D. Papadopoulou, J. H. Bibby, Pierre Billoir, G. Cosme, A. Baroncelli, Marco Bozzo, M. J. Bates, B. De Lotto, Guenakh Mitselmakher, G. Crosetti, S. J. Alvsvaag, Leif J. Jönsson, Ugo Gasparini, D. C. Fries, P. Weilhammer, I. Belokopytov, D. Husson, I. A. Tyapkin, T. S. Spassoff, A. Campion, M. Pegoraro, M. Pernicka, G. Lenzen, R. Strub, J. E. Campagne, M. Koratzinos, L. Lanceri, Paul Baillon, E. C. Katsoufis, G. Myatt, E. Graziani, Mikko Voutilainen, P. S. Iversen, F. Fontanelli, H. Furstenau, E. Sanchis, A. Lopez-Fernandez, Marta Calvi, L. Di Ciaccio, C. Defoix, P. Szymanski, A. Firestone, N. Redaelli, J. Marco, S. Ueberschaer, F. Waldner, H. Wahlen, Ariel Goobar, Ugo Amaldi, H. Forsbach, J. W. Lamsa, Guido Barbiellini, H. Herr, L. G. Tkatchev, Jose M. Benlloch, A. Grant, Mogens Dam, C. Lambropoulos, Patrick Jarry, G. Rinaudo, Clara Troncon, J. Guy, W. De Boer, Geoffrey Smith, E.N. Tsyganov, J. H. Wickens, W. Dulinski, Jose Luis Contreras, A. Fenyuk, J. H. Koehne, M. Pimenta, K. Woschnagg, B. A. Khomenko, A. De Min, A. Stocchi, Joao Varela, Hans Dijkstra, A. Markou, T. Buran, N. De Groot, P. Beltran, M. Vollmer, P. Delpierre, Tim Adye, W. D. Apel, B. Franek, P. Kluit, M. Mazzucato, U. Rossi, C. Walck, Paolo Giacomelli, J. E. Hooper, Francesco Navarria, L. Vibert, K. H. Becks, G. W. Van Apeldoorn, M. P. Clara, G. D. Alekseev, P. Negri, J. M. Brunet, M. Jonker, Pierre Astier, J. Zúñiga, M. Boratay, P. Abreu, P. Borgeaud, R. Sekulin, A. Zalewska, M. Baubillier, K. D. Brand, E. Vallazza, L. Ventura, G. Hamel de Monchenault, H. Schneider, Göran Jarlskog, Jan Ridky, L. Mathis, T. Moa, M.A. Lopez Aguera, M. Mc Cubbin, K. Hultqvist, H. Borner, C. Pinori, B.D. Hyams, Mikael Berggren, S. Ragazzi, A. Sebastia, Francesca Romana Cavallo, Josef Strauss, E. Lillethum, A. Letessier-Selvon, Mitchell Wayne, P. Zalewski, V. Lepeltier, G. Kantarjian, B. Grossetete, Allan Hallgren, Vegni, Giovanni Valenti, F. Udo, W. Venus, G. Maehlum, I. Herbst, V. Ruhlmann, Paolo Checchia, Jacques Lemonne, J. Velasco, E. Rosso, H. Klein, Ph. Gavillet, V. V. Lapin, Hans Muller, Fares Djama, V. Canale, N. K. Visnevskiy, C. De Clercq, F. Kapusta, L. Bugge, J. Drees, P. D. Dauncey, N. J. Kjaer, A. J. Camacho Rozas, G. Sette, M. Sessa, Maria Elena Pol, G. Leder, Alexander Vodopyanov, B. Åsman, G. Zumerle, L. Cerrito, F. Bianchi, P. N. Bogolubov, F. Ledroit, Kjell Fransson, S. Katsanevas, P. Privitera, D. Z. Toet, T. Kreuzberger, D. Vilanova, Christine Kourkoumelis, E. Dahl-Jensen, M. Schaeffer, D. Y. Bardin, P. Beilliere, D. Crennell, W. Van Doninck, P. N. Ratoff, Andrea Perrotta, F. Alted, J. Dolbeau, F. Mandl, G. Smadja, A. Klovning, Daniel Treille, Paul Allen, R. Lucock, R. Sosnowski, Olga Botner, Krzysztof Korcyl, A. Tilquin, Jorge-Armando Benitez Garcia, U. Mjoernmark, R. Gokieli, B. W. Heck, P.I. Zarubin, J. J. Hernandez, J. Cuevas Maestro, P. O. Hulth, P. Yepes, M. Regler, C. J. Beeston, J. Krolikowski, N. Magnussen, P. Herquet, H. De Boeck, V. Falaleev, E. Daubie, P. Laurikainen, M. De Beer, M. R. Monge, B. Jean-Marie, S. Braibant, S. Tavernier, M. Tyndel, M. Bonesini, J. A. M. A. Buytaert, Y. Gouz, N. Crosland, G. Gopal, Y. Sacquin, Andrey Korytov, R. Llosa, H. Mueller, J.M. Gago, H. Foeth, D. Wormald, R. Contri, M. Fernandez Alonso, T. Bolognese, E. J. Sanchez, R. Orava, U. Trevisan, R. Zukanovich Funchal, M. Szeptycka, W. Bartl, J. Wikne, N. Smirnov, V. Perevozchikov, J. A. Valls Ferrer, M. Turala, Manolis Dris, J. P. Gerber, Mario Sannino, K. W. Glitza, P. Roudeau, G. Skjevling, J. P. Laugier, F. Stichelbaut, A. De Angelis, D. Delikaris, R. Dzhelyadin, D. Gamba, C. Stanescu, R. Lauhakangas, N. van Eijndhoven, E. Zevgolatakos, G. Voulgaris, F. Verbeure, Daniel Bloch, Ahmimed Ouraou, V.M. Golovatyuk, Marcos Dracos, B. Bouquet, Juan Fuster, M. Kopf, B. Dalmagne, Laurent Chevalier, R. Zitoun, F. Fulda-Quenzer, P. Kokkinias, Milos Lokajicek, J. Kesteman, E. G. Anassontzis, J. P. Engel, M. V. Castillo Gimenez, G. Damgaard, O. Pingot, V. Gracco, H. Saarikko, Pavlos Ioannou, A.K. Topphol, Klaus Moenig, M. A. Houlden, G. Matthiae, W. A. Mitaroff, F. Richard, M. Hahn, F. Naraghi, V. G. Timofeev, S. Almehed, K. Spang, F. Hahn, C. Matteuzzi, E. Lillestol, G. Grosdidier, Alessandra Romero, I.A. Gritsaenko, J. E. Augustin, A. Zaitsev, S. Haider, A. N. Sissakian, Claudia J. Stubenrauch, Eleuterio Spiriti, C. Caso, H. B. Crawley, P. Morettini, Pierre Juillot, B. Koene, A.N. Diddens, D. Loukas, M. Crozon, R. Pain, V. Obraztsov, O. Barring, S. Dagoret, P. Van Dam, Renato Turchetta, C. De La Vaissiere, G. Zhang, Pawel Jalocha, Barry King, R. Frühwirth, J. Timmermans, P. Branchini, G. E. Theodosiou, M.D.M. De Fez Laso, R. Moeller, A. Pinsent, N. Yamdagni, M. T. Trainor, Sandor Czellar, N. Brummer, G. Wormser, Pieter David, W. H. Range, W. Krupinski, S. Maltezos, H. J. Hilke, J. Skeens, G. Stavropoulos, V. Chorowicz, R. Mc Kay, N. I. Zimim, F. Adami, Jürgen H. Werner, Philippe Charpentier, Francisco Matorras, T. B. Skaali, F. J. Harris, A. G. Frodesen, Z. Hajduk, Maciej Górski, A. Hakansson, C. Bosio, E. Vlasov, R. Holmes, Delphi, Collaboration, Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Nuclear and High Energy Physics, Particle physics, E+E ANNIHILATION, Meson, LUND MONTE-CARLO, Electron–positron annihilation, Hadron, 01 natural sciences, JET FRAGMENTATION, Charm quark, Standard Model, law.invention, Nuclear physics, PHYSICS, ENERGY, Pion, D-STAR-MESON, CROSS-SECTION, law, 0103 physical sciences, 010306 general physics, Collider, Nuclear Experiment, Boson, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Physique des particules élémentaires, Física nuclear, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: A determination of the partial width Γc̄ of the Z0 boson into charm quark pairs is presented, based on a total sample of 36 900 Z0 hadronic decays measured with the DELPHI detector at the LEP collider. The production rate of cc events is derived from the inclusive analysis of charged pions coming from the decay of charmed meson D*+-→D0π+ and D*-→D̄0π- where the π± is constrained by kinematics to have a low pT with respect to the jet axis. The probability to procedure these π± from D*± decay in cc events is taken to be 0.31±0.05 as measured at √S = 10.55 GeV. The measured relative partial width Γ∞/Γh = 0.162± 0.030(stat.) ± 0.050(syst.) is in good agreement with the standard model value of 0.171. Together with our previous measurement of the total hadronic width Γh this implies Γ∞ = 282 ± 53 (stat.) ± 88 (syst.) MeV., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2016

8. Search for lepton flavor violating τ− decays into ℓ−η, ℓ−η′ and ℓ−π0

Author: Y. Miyazaki, I. Adachi, H. Aihara, D. Anipko, K. Arinstein, V. Aulchenko, T. Aziz, A.M. Bakich, E. Barberio, A. Bay, I. Bedny, K. Belous, U. Bitenc, I. Bizjak, A. Bondar, M. Bračko, T.E. Browder, A. Chen, W.T. Chen, B.G. Cheon, Y. Choi, Y.K. Choi, J. Dalseno, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, A. Go, A. Gorišek, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, H. Kaji, P. Kapusta, H. Kawai, T. Kawasaki, H. Kichimi, Y.J. Kim, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C.C. Kuo, A. Kuzmin, Y.-J. Kwon, M.J. Lee, T. Lesiak, S.-W. Lin, F. Mandl, T. Matsumoto, H. Miyake, H. Miyata, T. Nagamine, Y. Nagasaka, M. Nakao, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, Y. Onuki, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Park, L.S. Peak, R. Pestotnik, L.E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A.J. Schwartz, K. Senyo, M.E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J.B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, K. Tamai, M. Tanaka, G.N. Taylor, Y. Teramoto, X.C. Tian, I. Tikhomirov, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, S. Villa, A. Vinokurova, C.H. Wang, M. Watanabe, Y. Watanabe, E. Won, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z.P. Zhang, V. Zhilich, V. Zhulanov, and A. Zupanc
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Pi, High Energy Physics::Experiment, Pseudoscalar meson, Lepton
Abstract: We have searched for lepton-flavor-violating $\tau$ decays with a pseudoscalar meson ($\eta$, $\eta'$ {and} $\pi^0$) using a data sample of 401 fb$^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. No evidence for these decays is found and we set the following upper limits on the branching fractions: ${\cal{B}}(\tau^-\to e^-\eta) < 9.2\times 10^{-8}$, ${\cal{B}}(\tau^-\to \mu^-\eta) < 6.5\times 10^{-8}$, ${\cal{B}}(\tau^-\to e^-\eta') < 1.6\times 10^{-7}$, ${\cal{B}}(\tau^-\to \mu^-\eta') < 1.3\times 10^{-7}$, ${\cal{B}}(\tau^-\to e^-\pi^0) < 8.0\times 10^{-8}$ and ${\cal{B}}(\tau^-\to \mu^-\pi^0) < 1.2\times 10^{-7}$ at the 90% confidence level. These results improve our previously published upper limits by factors from 2.3 to 6.3.
Published: 2007

9. Semi-inclusive studies of semileptonic $B_s$ decays at Belle

Author: T. Sumiyoshi, T. Sanuki, H. Farhat, M. Uchida, M. C. Chang, L. E. Piilonen, S. Yashchenko, Y. Watanabe, A. Abdesselam, T. Julius, Y. Iwasaki, Y. J. Kwon, M. Shapkin, V. Chobanova, P. Lukin, B. R. Ko, J. G. Shiu, J. Dalseno, O. Schneider, A. Drutskoy, G. S. Varner, C. Pulvermacher, A. M. Bakich, Z. Natkaniec, D. Liventsev, J. Libby, V. Gaur, E. Kato, K. Chilikin, Z. Doležal, Yuki Sato, K. Trabelsi, X. L. Wang, Vladimir Zhulanov, N. Gabyshev, D. Červenkov, W. S. Hou, V. Vorobyev, M. E. Sevior, I. S. Lee, R. Glattauer, T. K. Pedlar, A. Moll, C. P. Shen, Byung Gu Cheon, P. Goldenzweig, S. Nishida, T. E. Browder, A. Bobrov, P. Wang, H. Hayashii, Phillip Urquijo, M. Ritter, M. N. Wagner, B. Golob, K. T. Kim, T. Aushev, H. K. Moon, Jochen Dingfelder, Yang Li, B. G. Fulsom, J. Hasenbusch, V. Savinov, Y. Choi, R. Gillard, J. S. Lange, S. Ganguly, L. Santelj, R. Pestotnik, T. Ferber, D. Cinabro, Y. Sakai, D. Semmler, Y. M. Goh, O. Frost, Sunmin Ryu, T. Nozaki, D. H. Lee, Christoph Schwanda, K. Senyo, L. Pesántez, M. Huschle, G. B. Mohanty, Samo Stanič, E. Won, S. Uno, T. Hara, R. Mizuk, M. J. Kim, A. Rostomyan, G. Bonvicini, Y. Usov, Hitoshi Yamamoto, M. Sumihama, M. Starič, P. Vanhoefer, V. Chekelian, C. Oswald, Marko Petrič, A. Vinokurova, Jung-Hyun Kim, C. Kiesling, Toru Iijima, T. Kawasaki, T. Kumita, R. Itoh, H. J. Hyun, S. H. Kim, P. Krokovny, K. M. Williams, Z. P. Zhang, K. H. Kang, K. Cho, T. A. Shibata, E. Nakano, H. Miyata, M. Bračko, M. Z. Wang, K. Kinoshita, U. Tamponi, A. Chen, D. Matvienko, P. Pakhlov, P. Kapusta, S. Sandilya, S.I. Eidelman, S. Okuno, D. M. Asner, Samo Korpar, R. Ayad, E. Ribežl, K. Hayasaka, H. Park, A. Bozek, Y. Teramoto, Z. Drásal, C. Van Hulse, D. Y. Kim, Dipanwita Dutta, I. Adachi, J. B. Kim, M. Nayak, T. Nanut, Y. S. Sohn, V.N. Zhilich, G. Schnell, I. Jaegle, I. Badhrees, H. Nakazawa, O. Grzymkowska, C. H. Wang, A. Zupanc, X. H. He, Hiroaki Aihara, J. Stypula, T. Kuhr, D. Getzkow, G. Pakhlova, L. Li Gioi, A. Garmash, Yoshinobu Unno, Peter Kodys, A.L. Sibidanov, S. Al Said, V. Babu, Yongsun Kim, V.E. Shebalin, E. Solovieva, A. Vossen, O. Seon, Frank Simon, V. Bhardwaj, M. Rozanska, A. Ishikawa, M. Nakao, C. W. Park, P. Križan, James E. Fast, and Y. Yook
Subjects: electron, Nuclear and High Energy Physics, High Energy Physics::Lattice, Hadron, Analytical chemistry, FOS: Physical sciences, BELLE, Upsilon(10870), 01 natural sciences, High Energy Physics - Experiment, +D%2Fs+lepton+neutrino%22">B/s --> D/s lepton neutrino, High Energy Physics - Experiment (hep-ex), KEK-B, KEKB, muon, 0103 physical sciences, ddc:530, K+ K, Nuclear Experiment, 010306 general physics, 10.86 GeV-cms, decay [B/s], Physics, Muon, 010308 nuclear & particles physics, photon, High Energy Physics::Phenomenology, semi-inclusive reaction, branching ratio [B/s], High Energy Physics::Experiment, hadron, Atomic physics, statistical, experimental results
Abstract: We present an analysis of the semi-inclusive decays $B_s \to D_s^- X \ell^+ \nu$ and $B_s \to D_s^{*-} X \ell^+ \nu$, where $X$ denotes a final state that may consist of additional hadrons or photons and $\ell$ is an electron or muon. The studied $B_s$ decays are contained in the $121.4~{\rm fb}^{-1}$ $\Upsilon(5S)$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The branching fractions of the decays are measured to be $\mathcal{B}(B_s \to D_s^- X \ell^+ \nu) = [8.2 \pm 0.2 (\text{stat}) \pm 0.6 (\text{syst}) \pm 1.4 (\text{ext})]\%$ and $\mathcal{B}(B_s \to D_s^{*-} X \ell^+ \nu) = [5.4 \pm 0.4 (\text{stat}) \pm 0.4 (\text{syst}) \pm 0.9 (\text{ext})]\%$, where the first two uncertainties are statistical and systematic and the last is due to external parameters. The measurement also provides an estimate of the $B_s^{(*)}\bar{B}_s^{(*)}$ production cross-section, $\sigma(e^+e^- \to B_s^{(*)}\bar{B}_s^{(*)}) = (53.8 \pm 1.4 (\text{stat}) \pm 4.0 (\text{syst}) \pm 3.4 (\text{ext}))\,{\rm pb}$, at the center-of-mass energy $\sqrt{s} = 10.86\,{\rm GeV}$., Comment: 13 pages, 2 figures, submitted to Phys. Rev. D
Published: 2015

10. Belle SVD2 vertex detector

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

11. Status of the Belle silicon vertex detector

Author: Z. Natkaniec, H. Aihara, Y. Asano, T. Aso, A. Bakich, T. Browder, M.C. Chang, Y. Chao, K.F. Chen, S. Chidzik, A. Chouvikov, J. Dalseno, R. Dowd, R. Fernholz, S. Fratina, M. Friedl, H. Fujii, Y. Fujiyama, J. Haba, K. Hara, T. Hara, B. Harrop, T. Haruyama, K. Hayashi, M. Hazumi, D. Heffernan, T. Higuchi, A. Igarashi, Y. Igarashi, H. Ikeda, H. Ishino, S. Iwaida, T. Kameshima, P. Kapusta, K. Kasami, T. Kawasaki, A. Kibayashi, S. Koike, S. Korpar, P. Križan, H. Kurashiro, A. Kusaka, T. Lesiak, D. Marlow, H. Matsumoto, Y. Mikami, H. Miyake, G.R. Moloney, S. Nozaki, R. Ohkubo, S. Okuno, S. Ono, Y. Onuki, W. Ostrowicz, H. Ozaki, L. Peak, M. Pernicka, M. Rosen, M. Rozanska, N. Sato, S. Schmid, J. Schümann, T. Shibata, R. Stamen, S. Stanič, H. Steininger, K. Sumisawa, J. Suzuki, H. Tajima, O. Tajima, K. Takahashi, F. Takasaki, N. Tamura, M. Tanaka, G.N. Taylor, K. Trabelsi, W. Trischuk, T. Tsuboyama, K. Uchida, K. Ueno, Y. Ushiroda, S. Vahsen, G. Varner, K. Varvell, Y.S. Velikzhanin, C.C. Wang, M.Z. Wang, M. Watanabe, Y. Watanabe, H. Yamamoto, Y. Yamashita, M. Yamauchi, R. Yang, Y. Yasu, T. Ziegler, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Vertex (computer graphics), Physics::Instrumentation and Detectors, business.industry, Detector, Dead time, Silicon vertex detector, law.invention, KEKB, Optics, law, High Energy Physics::Experiment, Collider, business, Instrumentation, Radiation hardening, Energy (signal processing)
Abstract: The old silicon vertex detector (SVD1) of the Belle detector, operating at the high-luminosity asymmetric energy e+e− collider KEKB, was replaced by an upgraded version (SVD2) in 2003. The new detector has modified geometry and redesigned readout electronics, providing a larger polar angle acceptance, better vertex resolution, improved radiation hardness and reduced dead time. The operation of the detector started successfully in October 2003. The basic concepts of the SVD2 design as well as its performance after 10 months of data taking are described in this paper.
Published: 2006

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

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

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

Author: H. Miyake, M. Hazumi, K. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A.M. Bakich, V. Balagura, Y. Ban, S. Banerjee, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T.E. Browder, Y. Chao, A. Chen, K.-F. Chen, B.G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y.K. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, L.Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, K. Hara, T. Hara, N.C. Hastings, K. Hayasaka, H. Hayashii, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J.H. Kang, J.S. Kang, P. Kapusta, S.U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H.R. Khan, H. Kichimi, H.J. Kim, J.H. Kim, S.K. Kim, S.M. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, C.C. Kuo, A. Kuzmin, Y.-J. Kwon, G. Leder, S.E. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyata, R. Mizuk, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S.L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, N. Parslow, L.S. Peak, R. Pestotnik, L.E. Piilonen, M. Rozanska, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, P. Schönmeier, J. Schümann, C. Schwanda, A.J. Schwartz, K. Senyo, R. Seuster, M.E. Sevior, H. Shibuya, J.B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, S.Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X.C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, K. Ueno, T. Uglov, S. Uno, Y. Ushiroda, G. Varner, K.E. Varvell, S. Villa, C.C. Wang, C.H. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, A. Yamaguchi, H. Yamamoto, T. Yamanaka, Y. Yamashita, M. Yamauchi, J. Ying, Y. Yusa, J. Zhang, L.M. Zhang, Z.P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Electron–positron annihilation, Astrophysics::Cosmology and Extragalactic Astrophysics, Polarization (waves), Nuclear physics, KEKB, CP violation, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract: We present measurements of the branching fraction, the polarization parameters and CP-violating asymmetries in B0→D*+D *- decays using a 140 fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. We obtain B(B0→D*+D*-)=[0. 81±0.08(stat)±0.11(syst)]×10-3, R⊥=0.19±0. 08(stat)±0.01(syst), R0=0.57±0.08(stat)±0.02(syst), S=-0.75±0.56(stat)±0.12(syst) and A=-0.26±0.26(stat) ±0.06(syst). Consistency with Standard Model expectations is also discussed.
Published: 2005

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

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

15. Measurement of χ2 production in two-photon collisions

Author: K. Abe, R. Abe, T. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A.M. Bakich, Y. Ban, E. Banas, A. Bay, P.K. Behera, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, B.C.K. Casey, P. Chang, Y. Chao, B.G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, M. Danilov, L.Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, R. Guo, F. Handa, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E.M. Heenan, I. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S.R. Hou, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, K. Inami, A. Ishikawa, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, H.K. Jang, J. Kaneko, J.H. Kang, J.S. Kang, P. Kapusta, S.U. Kataoka, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, H. Kichimi, D.W. Kim, Heejong Kim, H.J. Kim, H.O. Kim, Hyunwoo Kim, S.K. Kim, T.H. Kim, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, G. Leder, S.H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, S. Matsumoto, T. Matsumoto, K. Miyabayashi, H. Miyake, H. Miyata, G.R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, J.W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, S.L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C.W. Park, H. Park, K.S. Park, L.S. Peak, J.-P. Perroud, M. Peters, L.E. Piilonen, N. Root, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, M.E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J.B. Singh, S. Stanič, M. Starič, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S.K. Swain, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G.N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, S.N. Tovey, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, S.E. Vahsen, G. Varner, K.E. Varvell, C.C. Wang, C.H. Wang, J.G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B.D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, J. Yashima, Y. Yuan, Y. Yusa, J. Zhang, Z.P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Branching fraction, Product (mathematics), High Energy Physics::Experiment, Production (computer science), High Energy Physics - Experiment
Abstract: The production of the \chi_{c2} charmonium state in two-photon collisions has been measured with the Belle detector at the KEKB e^+e^- collider. A clear signal for \chi_{c2} --> \gamma J/\psi, J/\psi --> l^+l^- is observed in a 32.6fb^{-1} data sample accumulated at center-of-mass energies near 10.6GeV, and the product of its two-photon decay width and branching fraction is determined to be \Gamma_{\gamma\gamma}(\chi_{c2})B(\chi_{c2} --> \gamma J/\psi) B(J/\psi --> l^+l^-)= 13.5 +/- 1.3(stat.) +/- 1.1(syst.)eV., Comment: 16 pages, 5 figures, to be submitted to Phys. Lett. B
Published: 2002

16. The Belle detector

Author: A. Abashian, K. Gotow, N. Morgan, L. Piilonen, S. Schrenk, K. Abe, I. Adachi, J.P. Alexander, K. Aoki, S. Behari, Y. Doi, R. Enomoto, H. Fujii, Y. Fujita, Y. Funahashi, J. Haba, H. Hamasaki, T. Haruyama, K. Hayashi, Y. Higashi, N. Hitomi, S. Igarashi, Y. Igarashi, T. Iijima, Hirokazu Ikeda, Hitomi Ikeda, R. Itoh, M. Iwai, H. Iwasaki, Y. Iwasaki, K.K. Joo, K. Kasami, N. Katayama, M. Kawai, H. Kichimi, T. Kobayashi, S. Koike, Y. Kondo, M.H. Lee, Y. Makida, A. Manabe, T. Matsuda, T. Murakami, S. Nagayama, M. Nakao, T. Nozaki, K. Ogawa, R. Ohkubo, Y. Ohnishi, H. Ozaki, H. Sagawa, M. Saito, Y. Sakai, T. Sasaki, N. Sato, T. Sumiyoshi, J. Suzuki, J.I. Suzuki, S. Suzuki, F. Takasaki, K. Tamai, M. Tanaka, T. Tatomi, T. Tsuboyama, K. Tsukada, T. Tsukamoto, S. Uehara, N. Ujiie, S. Uno, B. Yabsley, Y. Yamada, H. Yamaguchi, H. Yamaoka, Y. Yamaoka, M. Yamauchi, Y. Yoshimura, H. Zhao, R. Abe, G. Iwai, T. Kawasaki, H. Miyata, K. Shimada, S. Takahashi, N. Tamura, H. Hanada, T. Nagamine, M. Nakajima, T. Nakajima, S. Narita, M. Sanpei, T. Takayama, M. Ueki, M. Yamaga, A. Yamaguchi, B.S. Ahn, J.S. Kang, Hyunwoo Kim, C.W. Park, H. Park, H.S. Ahn, H.K. Jang, C.H. Kim, S.K. Kim, S.H. Lee, C.S. Park, E. Won, H. Aihara, T. Higuchi, H. Kawai, T. Matsubara, T. Nakadaira, H. Tajima, J. Tanaka, T. Tomura, M. Yokoyama, M. Akatsu, K. Fujimoto, M. Hirose, K. Inami, A. Ishikawa, S. Itami, T. Kani, T. Matsumoto, I. Nagai, T. Okabe, T. Oshima, K. Senyo, A. Sugi, A. Sugiyama, S. Suitoh, M. Tomoto, K. Yoshida, R. Akhmetshin, P. Chang, Y. Chao, Y.Q. Chen, W.S. Hou, S.C. Hsu, H.C. Huang, T.J. Huang, M.C. Lee, R.S. Lu, J.C. Peng, K.C. Peng, S. Sahu, H.F. Sung, K.L. Tsai, K. Ueno, C.C. Wang, M.Z. Wang, G. Alimonti, T.E. Browder, B.C.K. Casey, F. Fang, H. Guler, M. Jones, Y. Li, S.L. Olsen, M. Peters, J.L. Rodriguez, M. Rosen, S. Swain, K. Trabelsi, G. Varner, H. Yamamoto, Y.H. Zheng, Q. An, H.F. Chen, Y.F. Wang, Z.Z. Xu, S.W. Ye, Z.P. Zhang, M. Asai, Y. Asano, S. Mori, S. Stanič, Y. Tsujita, J. Zhang, D. Žontar, T. Aso, V. Aulchenko, D. Beiline, A. Bondar, L. Dneprovsky, S. Eidelman, A. Garmash, A. Kuzmin, L. Romanov, N. Root, B. Shwartz, A. Sidorov, V. Sidorov, Y. Usov, V. Zhilich, A.M. Bakich, L.S. Peak, K.E. Varvell, E. Banas, A. Bozek, P. Jalocha, P. Kapusta, Z. Natkaniec, W. Ostrowicz, H. Palka, M. Rozanka, K. Rybicki, P.K. Behera, A. Mohapatra, M. Satapathy, Y.H. Chang, H.S. Chen, L.Y. Dong, J. Li, H.M. Liu, Z.P. Mao, C.X. Yu, C.C. Zhang, S.Q. Zhang, Z.G. Zhao, Z.P. Zheng, B.G. Cheon, Y. Choi, D.W. Kim, J.W. Nam, S. Chidzik, K. Korotuschenko, C. Leonidopoulos, T. Liu, D. Marlow, C. Mindas, E. Prebys, R. Rabberman, W. Sands, R. Wixted, S. Choi, J. Dragic, C.W. Everton, A. Gordon, N.C. Hastings, E.M. Heenan, L.C. Moffitt, G.R. Moloney, G.F. Moorhead, M.E. Sevior, G.N. Taylor, S.N. Tovey, A. Drutskoy, R. Kagan, P. Pakhlov, S. Semenov, C. Fukunaga, R. Suda, M. Fukushima, V.I. Goriletsky, B.V. Grinyov, V.R. Lyubinsky, A.I. Panova, K.V. Shakhova, L.I. Shpilinskaya, E.L. Vinograd, B.G. Zaslavsky, R.S. Guo, F. Haitani, Y. Hoshi, K. Neichi, K. Hara, T. Hara, M. Hazumi, T. Hojo, D. Jackson, H. Miyake, Y. Nagashima, J. Ryuko, K. Sumisawa, M. Takita, T. Yamanaka, H. Hayashii, K. Miyabayashi, S. Noguchi, S. Hikita, H. Hirano, K. Hoshina, H. Mamada, O. Nitoh, N. Okazaki, T. Yokoyama, H. Ishino, S. Ichizawa, T. Hirai, H. Kakuno, J. Kaneko, T. Nakamura, Y. Ohshima, Y. Watanabe, S. Yanaka, Y. Inoue, E. Nakano, T. Takahashi, Y. Teramoto, J.H. Kang, H.J. Kim, Heejong Kim, Y.-J. Kwon, E. Kurihara, T. Ooba, K. Suzuki, Y. Unno, N. Kawamura, H. Yuta, K. Kinoshita, A. Satpathy, S. Kobayashi, T. Kuniya, A. Murakami, S. Kumar, J. Singh, J. Lange, R. Stock, S. Matsumoto, M. Watanabe, H. Matsuo, S. Nishida, T. Nomura, H. Sakamoto, N. Sasao, Y. Ushiroda, Y. Nagasaka, Y. Tanaka, S. Ogawa, H. Shibuya, K. Hanagaki, S. Okuno, D.Z. Shen, D.S. Yan, Z.W. Yin, N. Tan, C.H. Wang, T. Yamaki, and Y. Yamashita
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, Meson, Physics::Instrumentation and Detectors, Detector, Particle detector, Particle identification, Belle experiment, Semiconductor detector, Nuclear physics, KEKB, Computer Science::Programming Languages, Physics::Accelerator Physics, High Energy Physics::Experiment, Instrumentation
Abstract: The BELLE detector for experiments at KEKB, a high luminosity, energy asymmetric B-factory, is now being constructed at KEK. An overview of the detector systems and their status is presented.
Published: 2002

17. Measurement of theCPViolation Parametersin2φ1inBd0Meson Decays

Author: A. Abashian, K. Abe, I. Adachi, Byoung Sup Ahn, H. Aihara, M. Akatsu, G. Alimonti, K. Aoki, K. Asai, M. Asai, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, E. Banas, S. Behari, P. K. Behera, D. Beiline, A. Bondar, A. Bozek, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, S.-K. Choi, Y. Choi, Y. Doi, J. Dragic, A. Drutskoy, S. Eidelman, Y. Enari, R. Enomoto, C. W. Everton, F. Fang, H. Fujii, K. Fujimoto, Y. Fujita, C. Fukunaga, M. Fukushima, A. Garmash, A. Gordon, K. Gotow, H. Guler, R. Guo, J. Haba, T. Haji, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, T. Haruyama, N. C. Hastings, K. Hayashi, H. Hayashii, M. Hazumi, E. M. Heenan, Y. Higashi, Y. Higashino, I. Higuchi, T. Higuchi, T. Hirai, H. Hirano, M. Hirose, T. Hojo, Y. Hoshi, K. Hoshina, W.-S. Hou, S.-C. Hsu, H.-C. Huang, Y.-C. Huang, S. Ichizawa, Y. Igarashi, T. Iijima, H. Ikeda, K. Ikeda, K. Inami, Y. Inoue, A. Ishikawa, H. Ishino, R. Itoh, G. Iwai, M. Iwai, M. Iwamoto, H. Iwasaki, Y. Iwasaki, D. J. Jackson, P. Jalocha, H. K. Jang, M. Jones, R. Kagan, H. Kakuno, J. Kaneko, J. H. Kang, J. S. Kang, P. Kapusta, K. Kasami, N. Katayama, H. Kawai, M. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, Hyunwoo Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Koike, S. Koishi, Y. Kondo, H. Konishi, K. Korotushenko, P. Krokovny, R. Kulasiri, S. Kumar, T. Kuniya, E. Kurihara, A. Kuzmin, Y.-J. Kwon, M. H. Lee, S. H. Lee, C. Leonidopoulos, H.-B. Li, R.-S. Lu, Y. Makida, A. Manabe, D. Marlow, T. Matsubara, T. Matsuda, S. Matsui, S. Matsumoto, T. Matsumoto, Y. Mikami, K. Misono, K. Miyabayashi, H. Miyake, H. Miyata, L. C. Moffitt, A. Mohapatra, G. R. Moloney, G. F. Moorhead, N. Morgan, S. Mori, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, Y. Nagashima, T. Nakadaira, T. Nakamura, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, S. Narita, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, Y. Ohshima, T. Okabe, T. Okazaki, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. S. Park, C. W. Park, H. Park, L. S. Peak, M. Peters, L. E. Piilonen, E. Prebys, J. L. Rodriguez, N. Root, M. Rozanska, K. Rybicki, J. Ryuko, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, H. Sakaue, M. Satapathy, N. Sato, A. Satpathy, S. Schrenk, S. Semenov, Y. Settai, M. E. Sevior, H. Shibuya, B. Shwartz, A. Sidorov, V. Sidorov, J. B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, J. Suzuki, J.-I. Suzuki, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, H. Tajima, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, Y. Tanaka, G. N. Taylor, Y. Teramoto, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, T. Tsuboyama, Y. Tsujita, T. Tsukamoto, S. Uehara, K. Ueno, N. Ujiie, Y. Unno, S. Uno, Y. Ushiroda, Y. Usov, S. E. Vahsen, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, M.-Z. Wang, T. J. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamaguchi, H. Yamamoto, T. Yamanaka, H. Yamaoka, Y. Yamaoka, Y. Yamashita, M. Yamauchi, S. Yanaka, M. Yokoyama, K. Yoshida, Y. Yusa, H. Yuta, C. C. Zhang, H. W. Zhao, J. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, Electron–positron annihilation, General Physics and Astronomy, Resonance, CP violation, High Energy Physics::Experiment, Standard Model
Abstract: We present a measurement of the standard model $\mathrm{CP}$ violation parameter $\mathrm{sin}2{\ensuremath{\varphi}}_{1}$ (also known as $\mathrm{sin}2\ensuremath{\beta}$) based on a $10.5{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric ${e}^{+}{e}^{\ensuremath{-}}$ collider. One neutral $B$ meson is reconstructed in the $J/\ensuremath{\psi}{K}_{S}$, $\ensuremath{\psi}(2S){K}_{S}$, ${\ensuremath{\chi}}_{c1}{K}_{S}$, ${\ensuremath{\eta}}_{c}{K}_{S}$, $J/\ensuremath{\psi}{K}_{L}$, or $J/\ensuremath{\psi}{\ensuremath{\pi}}^{0}$ $\mathrm{CP}$-eigenstate decay channel and the flavor of the accompanying $B$ meson is identified from its charged particle decay products. From the asymmetry in the distribution of the time interval between the two $B$-meson decay points, we determine $\mathrm{sin}2{\ensuremath{\varphi}}_{1}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.58}_{\ensuremath{-}0.34}^{+0.32}(\mathrm{stat}{)}_{\ensuremath{-}0.10}^{+0.09}(\mathrm{syst})$.
Published: 2001

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

Author: D. Cinabro, A. Ishikawa, W. S. Hou, B. Bhuyan, P. Križan, T. E. Browder, Jung-Hyun Kim, V. Vorobyev, D. A. Epifanov, H. J. Kim, J. Klucar, O. Nitoh, P. Kapusta, S. Okuno, I. Adachi, A. Ogawa, V. Chekelian, Y. Teramoto, P. Krokovny, E. Won, Rakesh Kumar, Hiroaki Aihara, H. Sahoo, J. B. Kim, Peter Kodys, A.L. Sibidanov, W. W. Jacobs, K. Cho, R. Seidl, V.N. Zhilich, T. Uglov, Andrey Sokolov, J. H. Kang, J. Haba, K. Miyabayashi, R. Mizuk, M. Shapkin, M. Röhrken, E. Nedelkovska, K. Chilikin, Y. Usov, M. J. Kim, M. Grosse Perdekamp, F. Giordano, M. Starič, James E. Fast, B.A. Shwartz, B. R. Ko, B. Golob, H. Farhat, T. Kumita, K. Senyo, G. Schnell, T. Iijima, J. S. Lange, T. K. Pedlar, E. Nakano, Vladimir Zhulanov, M. Watanabe, A. Moll, P. Pakhlov, R. Pestotnik, Z. Drásal, M. E. Sevior, V. Gaur, M. Nakao, S. Ogawa, C. Van Hulse, Y. S. Sohn, Y. J. Kwon, C. Ng, Y. Watanabe, O. Schneider, T. A. Shibata, H. Miyata, E. Kato, H. Hayashii, Y. Hoshi, Norihito Muramatsu, Yoshinobu Unno, T. Sumiyoshi, T. Tsuboyama, M. Nayak, H. Park, A. Bozek, K. Hayasaka, C. H. Wang, D. Dutta, H. K. Park, Y. Yamashita, S.I. Eidelman, Sang Hoon Lee, M. Bračko, H. O. Kim, B. G. Cheon, T. Sanuki, Jolanta Brodzicka, L. E. Piilonen, C. P. Shen, S. L. Olsen, K. M. Williams, Richard T. Kouzes, V.M. Aulchenko, M. Leitgab, A. Chen, Y. B. Hsiung, Jingxu Wang, S. Uno, T. Aushev, C. Schwanda, Yukinori Sato, J. G. Shiu, J. Dalseno, T. Julius, Po-Hsun Chen, Yang Li, M. Sumihama, Y. Choi, N. K. Nisar, L. Santelj, Y. M. Goh, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, G. Tatishvili, C. Oswald, Meng Wang, T. Kawasaki, M. Uchida, V. Chobanova, D. Liventsev, Marko Petrič, H. J. Hyun, G. S. Varner, P. Smerkol, R. Itoh, D. Matvienko, P. Wang, M. N. Wagner, D. M. Asner, S. Sandilya, A. Vossen, O. Seon, Frank Simon, Y. Sakai, E. Solovieva, Z. Q. Liu, A.E. Bondar, and R. Gillard
Subjects: Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, General Physics and Astronomy, 01 natural sciences, Resonance (particle physics), law.invention, Nuclear physics, Pion, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, Energy (signal processing)
Abstract: Measurements of inclusive differential cross sections for charged pion and kaon production in e+e- annihilation have been carried out at a center-of-mass energy of √s=10.52 GeV. The measurements were performed with the Belle detector at the KEKB e+e- collider using a data sample containing 113×106 e+e -→qq events, where q={u,d,s,c}. We present charge-integrated differential cross sections dσh±/dz for h±={π±,K±} as a function of the relative hadron energy z=2Eh/√s from 0.2 to 0.98. The combined statistical and systematic uncertainties for π± (K±) are 4% (4%) at z∼0.6 and 15% (24%) at z∼0.9. The cross sections are the first measurements of the z dependence of pion and kaon production for z>0.7 as well as the first precision cross section measurements at a center-of-mass energy far below the Z0 resonance used by the experiments at LEP and SLC. © 2013 American Physical Society.
Published: 2013

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

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

20. First Observation ofBs0→J/ψηandBs0→J/ψη′

Author: E. Won, A. Bozek, Satoshi Tanaka, K. Arinstein, R. Mizuk, C. H. Wang, D. M. Asner, Y. Teramoto, Stephen Lars Olsen, E. Nakano, Yukinori Sato, V. Gaur, A.E. Bondar, M. Shapkin, G. B. Mohanty, M. Röhrken, M. Bischofberger, Nagao Kobayashi, P. Kapusta, V. Zhilich, Y. F. Liu, H. Nakazawa, M. C. Chang, O. Brovchenko, O. Nitoh, B Bhuyan, Y. Iwasaki, K. Hayasaka, A. J. Schwartz, N. Katayama, Rakesh Kumar, Phillip Urquijo, H. Sahoo, Chang Liu, M. Iwabuchi, T. A. Shibata, S. Okuno, A. Ishikawa, Leo Piilonen, I. Adachi, J. Li, Y. Choi, M. Nakao, M. Sumihama, P. Kody, O. Schneider, R. Louvot, C. W. Park, K. M. Williams, A. Chen, Y. Unno, A. Vossen, T. Kuhr, J. Dalseno, S. Nishida, T. Sumiyoshi, A. M. Bakich, M. Bračko, H. O. Kim, P. Wang, V.E. Shebalin, Zhenyu Zhang, S. Esen, O. Seon, Y. S. Sohn, Frank Simon, K. Inami, Anze Zupanc, Andrey Sokolov, V. Bhardwaj, M. J. Kim, M. J. Lee, A.S. Kuzmin, I. Nakamura, Norihito Muramatsu, S. K. Choi, S. H. Lee, T. Peng, K. Nishimura, Pavel Krokovny, S. McOnie, J. Libby, J. E. Fast, J. Haba, B. R. Ko, T. Hara, Y. B. Hsiung, Toru Iijima, Kevin Varvell, M. Watanabe, K. Cho, Marko Petrič, M. Starič, Semen Eidelman, J. H. Kang, H. J. Hyun, P. Smerkol, Yongsun Kim, P. Krian, T. Ohshima, Y. Watanabe, T. Mori, Y. Sakai, K. Trabelsi, Y. M. Goh, H. K. Park, C. P. Shen, Yasuyuki Horii, J. G. Shiu, Y. Usov, C. Schwanda, A. Garmash, T. Kawasaki, H. Hayashii, Z. Natkaniec, W. S. Hou, B. G. Cheon, T. Julius, Po-Hsun Chen, R. Chistov, Z. Q. Liu, M. T. Prim, D. Matvienko, H. J. Kim, Y. Miyazaki, Z. Doleal, Y. Li, Hiroaki Aihara, R. Pestotnik, K. Kinoshita, T. Iwashita, T. E. Browder, J. Wicht, C. Z. Yuan, K. Senyo, Tagir Aushev, J. S. Lange, M. E. Sevior, Samo Korpar, G. Varner, S. Ogawa, Y. Hoshi, W. Ostrowicz, S. Stanič, Y. Yamashita, K. Sakai, V.M. Aulchenko, S. Uno, Sunmin Ryu, R. Itoh, M. Uchida, T. Sanuki, Sadaharu Uehara, G. Pakhlova, J. B. Kim, V. Vorobyev, Y. J. Kwon, A. Drutskoy, K. T. Kim, G. Tatishvili, K. S. Park, T. K. Pedlar, A. Moll, and D. Liventsev
Subjects: Physics, KEKB, 010308 nuclear & particles physics, 0103 physical sciences, Analytical chemistry, General Physics and Astronomy, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, 01 natural sciences
Abstract: We report first observations of B-s(0) -> J/psi eta and B-s(0) -> J/psi eta'. The results are obtained from 121.4 fb(-1) of data collected at the Gamma(5S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We obtain the branching fractions B(B-s(0)-> J/psi eta')=[5.10 +/- 0.50(stat)+/- 0.25(syst)(-0.79)(+1.14)(N-Bs(*)(B) over bars(*)] X 10(-4,) B(B-s(0)-> J/psi eta') = [3.71 +/- 0.61(stat)+/-(+0.83)(-0.57)(N-Bs(*)(B) over bars(*)] X 10(-4). The ratio of the two branching fractions is measured to be B(B-s -> J/psi eta')/B(B-s -> J/psi eta) = 0.73 +/- 0.14(stat) +/- 0.02(syst).
Published: 2012

21. Search for time-dependentCPTviolation in hadronic and semileptonicBdecays

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

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

Author: R. Mizuk, K. T. Kim, Andrey Sokolov, C. Liu, S. K. Choi, B. G. Cheon, W. Ostrowicz, K. Nishimura, H. Kichimi, Marko Petrič, M. Uchida, V. Gaur, G. S. Varner, R. Itoh, P. Wang, M. Nakao, James E. Fast, G. B. Mohanty, H. J. Hyun, T. Kawasaki, I. S. Cho, P. Smerkol, O. Nitoh, T. Sumiyoshi, S. McOnie, H. Nakazawa, E. Nakano, Y. Yusa, Sang Hoon Lee, H. J. Kim, A.E. Bondar, A. J. Schwartz, S. Korpar, B.A. Shwartz, C. Kiesling, T. A. Shibata, H. Miyata, M. Bischofberger, Nagao Kobayashi, D. M. Asner, T. Sanuki, Y. Hoshi, Z. P. Zhang, Z. Doleal, H. O. Kim, J. Stypula, Z. Q. Liu, S.I. Eidelman, C. H. Wang, M. Bračko, L. E. Piilonen, G. Pakhlova, Yukinori Sato, A. Ishikawa, H. K. Park, C. W. Park, H. Sahoo, Y. Yamashita, J. G. Shiu, Vladimir Zhulanov, G. Tatishvili, M. E. Sevior, S. Nishida, J. Dalseno, K. Hayasaka, T. Uglov, Sunmin Ryu, P. Krokovny, T. Aushev, Y. Watanabe, Phillip Urquijo, P. Kapusta, S. Okuno, Satoshi Tanaka, E. Won, K. Cho, T. Julius, Yasuyuki Horii, Kevin Varvell, Po-Hsun Chen, Norihito Muramatsu, R. Chistov, Anze Zupanc, S. K. Kim, D. Epifanov, X. L. Wang, J. Li, H. Aihara, R. Louvot, Y. Teramoto, Bruce Yabsley, R. Seidl, T. Kuhr, A. Kuzmin, Hitoshi Yamamoto, B. R. Ko, Samo Stanič, J. Haba, O. Seon, Frank Simon, T. Iwashita, Y. Onuki, S. Ogawa, V. Bhardwaj, T. K. Pedlar, Tariq Aziz, Y. Sakai, Y. Unno, S. L. Olsen, Yang Li, A. Moll, A. M. Bakich, Z. Natkaniec, T. Ohshima, Y. S. Sohn, Y. Choi, T. Hara, V.N. Zhilich, A.L. Sibidanov, J. B. Kim, P. Chang, Rakesh Kumar, B. Golob, E. Solovieva, K. Senyo, N. Gabyshev, M. Watanabe, B. Bhuyan, Jung-Hyun Kim, P. Krian, V.M. Aulchenko, M. Iwabuchi, T. E. Browder, J. S. Lange, Y. M. Goh, K. Miyabayashi, K. Trabelsi, C. P. Shen, W. S. Hou, J. Wicht, Yongsun Kim, P. Pakhlov, S. Uno, C. Schwanda, H. Park, A. Bozek, M. Sumihama, P. Kody, M. J. Kim, M. Starič, T. Kumita, Y. Iwasaki, Y. J. Kwon, M. Z. Wang, K. Kinoshita, O. Schneider, M. Shapkin, M. Röhrken, K. Chilikin, Anton Poluektov, Z. Drásal, and H. Hayashii
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, media_common.quotation_subject, General Physics and Astronomy, Resonance, Charge (physics), 01 natural sciences, Asymmetry, law.invention, Nuclear physics, KEKB, Pion, law, 0103 physical sciences, CP violation, High Energy Physics::Experiment, B meson, 010306 general physics, Collider, media_common
Abstract: We report a measurement of the CP-violation parameter sin2 phi(1) at the gamma(5S) resonance using a new tagging method, called "B-pi tagging." In gamma(5S) decays containing a neutral B meson, a charged B, and a charged pion, the neutral B is reconstructed in the J/psi K-S(0) CP-eigenstate decay channel. The initial flavor of the neutral B meson at the moment of the gamma(5S) decay is opposite to that of the charged B and may thus be inferred from the charge of the pion without reconstructing the charged B. From the asymmetry between B-pi(+) and B-pi(-) tagged J/psi K-S(0) yields, we determine sin2 phi(1) 0.57 +/- 0.58(stat) +/- 0.06(syst). The results are based on 121 fb(-1) of data recorded by the Belle detector at the KEKB e(+) e(-) collider.
Published: 2012

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

Author: R. Mizuk, H. K. Park, Z. Q. Liu, Y. Yamashita, E. Nakano, Yukinori Sato, C. Liu, J. G. Shiu, K. Sumisawa, P. Kapusta, S. Okuno, J. Dalseno, Frank Simon, V. Gaur, M. Nakao, Y. Teramoto, M. Yamauchi, S. McOnie, A. Vinokurova, P. Krokovny, D. Epifanov, Bruce Yabsley, K. Cho, B. R. Ko, O. Nitoh, Norihito Muramatsu, H. J. Kim, M. Rozanska, L. E. Piilonen, K. S. Park, T. K. Pedlar, G. Tatishvili, H. Nakazawa, B. Golob, Y. F. Liu, G. Pakhlova, Satoshi Tanaka, T. Iijima, P. Krian, A.E. Bondar, A. J. Schwartz, P. Pakhlov, M. Starič, T. Kumita, J. S. Lange, V. Bhardwaj, Z. Doleal, B. G. Cheon, Z. P. Zhang, I. Tikhomirov, K. M. Williams, Y. Unno, S. L. Olsen, C. H. Wang, H. O. Kim, T. Julius, S. E. Vahsen, T. Kuhr, A. Kuzmin, G. B. Mohanty, T. Iwashita, Po-Hsun Chen, Y. Sakai, R. Chistov, V.N. Zhilich, A. Bozek, Y. Iwasaki, W. S. Hou, J. Haba, S. Koblitz, M. Röhrken, K. Chilikin, Y. Yusa, H. Ozaki, S. Ogawa, Y. J. Kwon, S. Korpar, Anze Zupanc, S. Neubauer, K. T. Kim, S. Uehara, K. Miyabayashi, O. Schneider, K. Senyo, B. Bhuyan, M. Watanabe, J. B. Singh, N. Katayama, S. K. Choi, Kevin Varvell, V. Vorobyev, Marko Petrič, T. E. Browder, H. J. Hyun, P. Smerkol, T. Sumiyoshi, Y. B. Hsiung, Tariq Aziz, Yang Li, T. Kawasaki, E. Solovieva, Jung-Hyun Kim, Yongsun Kim, Sang Hoon Lee, A. Garmash, S. Uno, Y. Choi, I. Adachi, A. Ishikawa, A. Bay, T. Hara, R. Pestotnik, T. Mori, H. Aihara, B.A. Shwartz, M. Danilov, T. Higuchi, Z. Drásal, C. Schwanda, D. Matvienko, Y. Miyazaki, J. B. Kim, T. Sanuki, M. Uchida, Y. M. Goh, K. Hara, D. M. Asner, Y. S. Sohn, E. Won, K. Trabelsi, C. P. Shen, S. Nishida, D. Liventsev, Andrey Sokolov, A.L. Sibidanov, H. Sahoo, T. Uglov, G. S. Varner, Hitoshi Yamamoto, K. Nishimura, T. Aushev, T. A. Shibata, H. Miyata, Rakesh Kumar, M. Bischofberger, Y. Hoshi, S.I. Eidelman, R. Itoh, James E. Fast, M. Iwabuchi, P. Wang, K. Hayasaka, J. Li, Yasuyuki Horii, R. Louvot, K. Sakai, V.E. Shebalin, H. Kichimi, T. Tsuboyama, Anton Poluektov, H. Hayashii, M. Z. Wang, K. Kinoshita, Y. Watanabe, Y. Onuki, V.M. Aulchenko, O. Zyukova, M. Sumihama, P. Kody, Y. Ushiroda, C. Kiesling, M. Bračko, Samo Stanič, A. M. Bakich, T. Ohshima, and N. Gabyshev
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, Resonance, 01 natural sciences, law.invention, Nuclear physics, KEKB, law, 0103 physical sciences, CP violation, High Energy Physics::Experiment, B meson, 010306 general physics, Collider
Abstract: We present a precise measurement of the CP violation parameter sin2 phi(1) and the direct CP violation parameter A(f) using the final data sample of 772 x 10(6) B (B) over bar pairs collected at the gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. One neutral B meson is reconstructed in a J/psi K-S(0), psi(2S)K-S(0), chi K-c1(S)0, or J/psi K-L(0) CP eigenstate an(its flavor is identified from the decay products of the accompanying B meson. From the distribution of proper-time intervals between the two B decays, we obtain the following CP violation parameters: sin2 phi(1) 0.667 +/- 0.023(stat) +/- 0.012(syst) and A(f) = 0.006 +/- 0.016(stat) +/- 0.012(syst).
Published: 2012

24. Status of the Belle SVD detector

Author: G. R. Moloney, S Takahashi, A. M. Bakich, Y Li, T. Nakadaira, Ascelin Gordon, Shigeki Mori, Takahiko Matsubara, Masashi Yokoyama, Go Iwai, Masashi Hazumi, S.K. Swain, T. Hojo, Yoshikazu Yamada, Daniel Robert Marlow, Hiroyuki Tajima, H. Guler, J. Ryuko, G. S. Varner, W. Ostrowicz, Y. Nagashima, Pawel Jalocha, Z. Natkaniec, L. S. Peak, C.W. Everton, G. N. Taylor, J. S. Lange, H. Miyake, M Rozanka, E. M. Heenan, J. Tanaka, N. C. Hastings, J. Dragic, S.L. Olsen, K. Trabelsi, J. Haba, K. Hara, Chikara Fukunaga, Hirokazu Ishino, Kevin Varvell, K. Sumisawa, T. Hara, S. Stanič, N. Tamura, H Zhao, Y. Asano, P. Kapusta, Y. Watanabe, S. Okuno, K. Shimada, R. Abe, D. Žontar, Takuya Higuchi, T. E. Browder, T. Tsuboyama, R. Stock, L.C. Moffitt, Hiroaki Aihara, J. Kaneko, Masaaki Tanaka, Elzbieta Banas, Yuichi Tsujita, M. E. Sevior, T. Tomura, K. Korotuschenko, H. Yamamoto, Takashi Nakamura, A. Bozek, H. Tagomori, H. Palka, T. Kawasaki, Fumihiko Takasaki, and G. Alimonti
Subjects: Physics, Nuclear and High Energy Physics, Meson, Spectrometer, Physics::Instrumentation and Detectors, Detector, chemistry.chemical_element, Synchrotron radiation, law.invention, B-factory, Nuclear physics, chemistry, law, Measuring instrument, Physics::Accelerator Physics, High Energy Physics::Experiment, Beryllium, Collider, Instrumentation
Abstract: The Belle spectrometer was designed for studies of B meson decays at an asymmetric e + e − collider operating at the ϒ(4S) resonance. One of its crucial components, a silicon vertex detector (SVD), is placed just outside a cylindrical beryllium beam-pipe. After a year of Belle operation an upgraded version of SVD was installed during the regular summer shut-down. The new SVD follows the same design, with a few important improvements. Rad-soft readout electronics was replaced by rad-tolerant one, allowing for longer lifetime of the detector. A new radiation and temperature monitoring system was developed and implemented. A saw-shaped inner surface was introduced in the beam-pipe to prevent potential synchrotron radiation damage. The upgraded detector started operating successfully in October 2000.
Published: 2002

25. Measurement ofe+e−→Ds()+Ds()−cross sections near threshold using initial-state radiation

Author: G. B. Mohanty, B.A. Shwartz, J. G. Shiu, J. Dalseno, Vladimir Zhulanov, M. E. Sevior, J. Haba, M. Shapkin, Robin Wedd, M. Röhrken, Y. J. Kim, K. Belous, S. Korpar, Kevin Varvell, A. Matyja, R. Pestotnik, T. Mori, Y. F. Liu, K. Trabelsi, C. P. Shen, Y. Watanabe, Samo Stanič, Zhenyu Zhang, I. Adachi, T. Iijima, D. Epifanov, B. R. Ko, Vladislav Balagura, K. Inami, H. O. Kim, H. Sahoo, T. Uglov, C. Kiesling, S. K. Choi, A. Drutskoy, H. Palka, L. E. Piilonen, G. Pakhlova, O. Nitoh, M. J. Lee, M. Z. Wang, K. Kinoshita, M. Bračko, P. Pakhlov, Y. Iwasaki, S. Ogawa, A. Vinokurova, Y. J. Kwon, Hiroaki Aihara, H. K. Park, A. M. Bakich, T. Ohshima, C. Z. Yuan, S. K. Kim, O. Schneider, Yasuyuki Horii, N. Gabyshev, M. Nakao, S. McOnie, S.I. Eidelman, Y. Yamashita, K. Cho, Byung Gu Cheon, Anton Poluektov, H. Park, A.S. Kuzmin, H. Nakazawa, Tariq Aziz, A. Bozek, Sunmin Ryu, T. Julius, E. L. Barberio, O. Zyukova, Y. Choi, Anze Zupanc, H. Hayashii, S. Uehara, Po-Hsun Chen, E. Won, A.E. Bondar, H. Ha, M. J. Kim, Marko Petrič, S. Nishida, R. Chistov, H. J. Hyun, P. Smerkol, A. Vossen, E. Nakano, M. Starič, T. Kumita, Z. Doležal, K. S. Choi, Frank Simon, K. Senyo, Y. Miyazaki, Y. Sakai, S. H. Kyeong, N. J. Joshi, I. Tikhomirov, A. Chen, B. Bhuyan, T. Kawasaki, T. E. Browder, E. Solovieva, A. Garmash, T. Sumiyoshi, H. J. Kim, M. Danilov, Sang Hoon Lee, H. Kawai, D. Liventsev, Yasushi Nagasaka, M. Iwabuchi, G. S. Varner, R. Itoh, K. Arinstein, R. Mizuk, P. Wang, Chang Liu, Yoshinobu Unno, B. Golob, V. Bhardwaj, J. S. Lange, W. S. Hou, S. Uno, C. Schwanda, Y. S. Sohn, V.N. Zhilich, Ping Zhou, R. Louvot, V.E. Shebalin, K. Miyabayashi, H. Miyata, Y. Hoshi, K. Hayasaka, A. Bay, T. Nozaki, C. W. Park, P. Križan, K. Sakai, Andrey Sokolov, P. Kapusta, S. Okuno, T. Aushev, Y. Teramoto, J. H. Kang, K. Nishimura, S. L. Olsen, T. Zivko, I. S. Cho, C. H. Wang, and M. Watanabe
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle decay, Near threshold, Meson, Electron–positron annihilation, Hadron, High Energy Physics::Experiment, State (functional analysis), Radiation, Luminosity
Abstract: We report a measurement of exclusive e(+)e(-) -> Ds(*)+Ds(*)- cross sections as a function of center-of-mass energy near the Ds(*)+Ds(*)- threshold with initial-state radiation. The analysis is based on a data sample collected with the Belle detector with an integrated luminosity of 967 fb(-1).
Published: 2011

26. Measurement ofηηproduction in two-photon collisions

Author: I. S. Cho, J. G. Shiu, J. Dalseno, C. H. Wang, R. Louvot, M. J. Lee, P. Goldenzweig, C. P. Shen, M. Bračko, O. Nitoh, H. K. Park, Y. Yamashita, H. Ha, S. H. Kyeong, Hiroaki Aihara, M. Shapkin, B. R. Ko, M. Iwasaki, H. Sahoo, Robin Wedd, Marko Petrič, H. J. Hyun, P. Smerkol, T. Uglov, M. Iwabuchi, Y. Sakai, J. Haba, P. Chang, K. Arinstein, Sadaharu Uehara, V.N. Zhilich, Ping Zhou, Vladislav Balagura, A. Bay, R. Mizuk, Gagan Bihari Mohanty, Y. Miyazaki, E. Nakano, L. E. Piilonen, M. J. Kim, K. Senyo, K. Vervink, A.E. Bondar, C. W. Park, K. Belous, S. Korpar, P. Križan, Jung-Hyun Kim, K. Miyabayashi, Samo Stanič, T. Kawasaki, M. Starič, E. Solovieva, S. Ryu, G. Bonvicini, H. Park, A. Bozek, Andrey Sokolov, S. Uno, C. Schwanda, T. Julius, R. Pestotnik, P. Kapusta, A. Matyja, S. Okuno, H. Nakazawa, A. M. Bakich, Po-Hsun Chen, J. H. Kang, Yoshinobu Unno, Z. Natkaniec, T. Ohshima, K. Nishimura, D. Liventsev, S. Ogawa, S.I. Eidelman, Z. Doležal, Y. Watanabe, H. J. Kim, P. Krokovny, S. Nishida, T. Aushev, T. Mori, Anton Poluektov, B. G. Cheon, Zhenyu Zhang, G. S. Varner, Frank Simon, X. L. Wang, Y. F. Liu, Y. Teramoto, T. Sumiyoshi, R. Itoh, A. Chen, A. Drutskoy, I. Adachi, Y. Choi, P. Wang, Y. Chao, H. Hayashii, A. Zupanc, H. Kichimi, Y. Iwasaki, Y. J. Kwon, T. E. Browder, H. O. Kim, Yasuyuki Horii, W. S. Hou, O. Schneider, B.A. Shwartz, M. Nakao, S. McOnie, M. E. Sevior, J. S. Lange, E. Won, Soohyung Lee, H. Kawai, P. Kody, E. L. Barberio, H. Miyata, M. Bischofberger, Y. Hoshi, K. Hayasaka, S. L. Olsen, D. H. Kah, T. Zivko, and Y. B. Hsiung
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), 010308 nuclear & particles physics, Scattering, Solid angle, 01 natural sciences, Resonance (particle physics), law.invention, Nuclear physics, Cross section (physics), KEKB, Amplitude, law, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Collider
Abstract: We report the first measurement of the differential cross section for the process gamma gamma -> eta eta in the kinematic range above the eta eta threshold, 1.096 GeV < W < 3.8 GeV over nearly the entire solid angle range, vertical bar cos theta*vertical bar
Published: 2010

27. First Measurement of InclusiveB→XsηDecays

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

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

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

29. Measurement ofyCPinD0meson decays to theKS0K+K−final state

Author: J. G. Shiu, B. Y. Han, P. Kapusta, S. Okuno, T. Aushev, Y. Teramoto, Bruce Yabsley, Y. Chao, P. Goldenzweig, B. R. Ko, Phillip Urquijo, A. Chen, S. Nishida, S. Ogawa, J. Haba, K. Vervink, A. J. Schwartz, A. Ishikawa, A. Bay, D. H. Kah, G. S. Varner, M. Starič, Vladislav Balagura, H. K. Park, Y. I. Kim, Y. Yamashita, Y. Watanabe, R. Itoh, Chang Liu, P. Wang, Masashi Hazumi, A. Sekiya, T. Zivko, C. W. Park, M. Iwasaki, Yang Liu, J. Li, H. Sahoo, H. J. Hyun, P. Križan, Yoji Hasegawa, K. Sakai, Y. Choi, A. Zupanc, M. Shapkin, Robin Wedd, T. E. Browder, Y. J. Kim, E. Won, Y. J. Kwon, T. Hara, V.N. Zhilich, Zhenyu Zhang, H. Ozaki, O. Nitoh, Y. Miyazaki, E. L. Barberio, S. Uehara, H. Ha, T. Lesiak, O. Zyukova, Y. Sakai, Yasushi Nagasaka, P. Pakhlov, O. Schneider, B.A. Shwartz, A. Vinokurova, Sunghyon Kyeong, K. Belous, N. Katayama, Jolanta Brodzicka, A. Drutskoy, R. Pestotnik, K. Trabelsi, P. Krokovny, C. P. Shen, K. Miyabayashi, Samo Korpar, Hiroaki Aihara, I. S. Cho, H. Park, A. Bozek, K. Senyo, T. Kawasaki, Vladimir Zhulanov, Hitoshi Yamamoto, I. Adachi, M. E. Sevior, H. Miyata, M. Bischofberger, S.I. Eidelman, Y. Hoshi, C. H. Wang, K. Hayasaka, B. Golob, C. C. Chiang, Andrey Sokolov, J. H. Kang, K. Nishimura, W. Dungel, K. Arinstein, R. Mizuk, R. Louvot, Yoshinobu Unno, Kevin Varvell, A. Matyja, Y. Usov, Samo Stanič, H. O. Kim, S. Uno, M. J. Lee, M. Bračko, A. M. Bakich, Z. Natkaniec, T. Ohshima, V. Aulchenko, Byung Gu Cheon, N. Gabyshev, E. Nakano, K. Inami, M. Nakao, Jasvinder A. Singh, Anton Poluektov, S. McOnie, N. J. Joshi, L. E. Piilonen, H. Hayashii, G. Pakhlova, M. Z. Wang, K. Kinoshita, G. N. Taylor, M. C. Chang, Rakesh Kumar, T. Sumiyoshi, and Jeremy Dalseno
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, State (functional analysis), 01 natural sciences, law.invention, Nuclear physics, Particle decay, KEKB, law, 0103 physical sciences, High Energy Physics::Experiment, Invariant mass, 010306 general physics, Collider, Bar (unit)
Abstract: We present a measurement of the D-0 - (D) over bar (0) mixing parameter y(CP) using a flavor-untagged sample of D-0 -> (KSK+K-)-K-0 decays. The measurement is based on a 673 fb(-1) data sample recorded with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Using a method based on measuring the mean decay time for different K+K- invariant mass intervals, we find y(CP) = (+0.11 +/- 0.61(stat.) +/- 0.52(syst.))%.
Published: 2009

30. Search for theX(1812)inB±→K±ωϕ

Author: P. Goldenzweig, A. M. Bakich, M. Yamauchi, Z. Natkaniec, T. Ohshima, B.A. Shwartz, N. Gabyshev, L. E. Piilonen, B. R. Ko, A. Zupanc, G. Pakhlova, K. S. Park, D. H. Kah, T. E. Browder, R. Louvot, O. Nitoh, A. Sekiya, W. Dungel, Masashi Hazumi, Andrey Sokolov, H. J. Hyun, T. Zivko, M. E. Sevior, P. Kapusta, S. Okuno, S. Uno, Hiroaki Aihara, I. S. Cho, H. Sahoo, J. G. Shiu, J. H. Kang, T. Uglov, C. Z. Yuan, T. Aushev, M. J. Lee, Antonio Limosani, Y. Iwasaki, H. Miyata, Y. Miyazaki, M. Tanaka, K. Senyo, M. Bračko, K. Nishimura, S. Nishida, E. Nakano, K. Vervink, Y. Hoshi, Y. Teramoto, Kevin Varvell, Bruce Yabsley, T. Kawasaki, P. Krokovny, K. Arinstein, R. Mizuk, J. Schümann, Y. Sakai, K. Hayasaka, O. Schneider, X. L. Wang, C. H. Wang, E. Won, B. Y. Han, D. Liventsev, A. Matyja, H. K. Park, Y. Yamashita, I. Adachi, S.I. Eidelman, J. Haba, G. S. Varner, Y. I. Kim, Yang Liu, Yoshinobu Unno, G. N. Taylor, Zhenyu Zhang, P. Pakhlov, H. Nakazawa, Samo Stanič, R. Itoh, P. Wang, A. Drutskoy, M. Iwasaki, A. Ishikawa, R. Seidl, A. Bay, C. P. Shen, S. H. Kyeong, Y. Usov, Y. Choi, Chang Liu, S. E. Lee, C. C. Wang, C. W. Park, M. Starič, E. L. Barberio, O. Zyukova, K. Sakai, P. Križan, M. C. Chang, H. Park, A. Bozek, S. Uehara, H. Ha, N. Katayama, Y. Watanabe, T. Lesiak, C. C. Zhang, S. Ogawa, H. O. Kim, Yasushi Nagasaka, S. Korpar, V. Bhardwaj, T. Sumiyoshi, Jeremy Dalseno, J. S. Lange, M. Nakao, S. McOnie, K. Inami, M. Shapkin, Robin Wedd, Y. J. Kim, H. Ozaki, R. Pestotnik, J. Li, B. G. Cheon, and A. Chen
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Analytical chemistry, 01 natural sciences, Omega, 3. Good health, Particle decay, Pair production, KEKB, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics
Abstract: We report on a search for the X(1812) state in the decay B-+/--> K-+/-omega phi with a data sample of 657x10(6) B B pairs collected with the Belle detector at the KEKB e(+)e(-) collider. No significant signal is observed. An upper limit B(B-+/-->(KX)-X-+/-(1812),X(1812)->omega phi) K-+/-omega phi)< 1.9x10(-6) (90% C.L.).
Published: 2009

31. Measurement of the moments of the photon energy spectrum inB→Xsγdecays and determination of|Vcb|andmbat Belle

Author: H. Sahoo, P. Pakhlov, E. Won, H. Park, A. Bozek, M. Iwasaki, F. Mandl, A. Bondar, K. Belous, S. Korpar, H. Shibuya, A. M. Bakich, M. E. Sevior, A. Ishikawa, Hitoshi Yamamoto, Joowon Lee, Z. Natkaniec, T. Ohshima, S. E. Lee, T. Nozaki, R. Mizuk, T. Sumiyoshi, F. Takasaki, C. W. Park, P. Križan, Y. Yamashita, H. J. Hyun, E. Nakano, M. Tanaka, S. Uno, W. T. Chen, C. Schwanda, W. S. Hou, H. Palka, L. E. Piilonen, G. Pakhlova, Y. Miyazaki, K. Arinstein, Y. Iwasaki, C. C. Kuo, M. Shapkin, Y. Kozakai, Y. J. Kwon, H. J. Kim, Robin Wedd, Y. Choi, O. Schneider, Zhenyu Zhang, I. S. Cho, Y. J. Kim, P. Kapusta, S. Okuno, T. Aushev, S. Nishida, Chang Liu, Yoshinobu Unno, M. J. Lee, R. Chistov, J. Haba, D. Heffernan, Y. Teramoto, Bruce Yabsley, Y. Sakai, C. H. Wang, M. Bračko, L. S. Peak, J. H. Kang, R. Seidl, T. Hara, A.S. Kuzmin, M. Dash, A. Drutskoy, Kevin Varvell, I. Adachi, B. Golob, U. Bitenc, W. A. Mitaroff, H. Kichimi, M. C. Chang, J. Dalseno, M. Starič, Y. Watanabe, Y. Kuroki, A. Matyja, T. Lesiak, A. Zupanc, Rakesh Kumar, S. Villa, Samo Stanič, H. Miyake, B. Shwartz, O. Nitoh, R. Pestotnik, A. Somov, Hiroaki Aihara, Tatiana Medvedeva, Hirokazu Ishino, S. Noguchi, E. L. Barberio, A. Sekiya, I. Bedny, J. Li, S. Ogawa, S. Uehara, H. Ha, N. Katayama, S. Bahinipati, B. G. Cheon, I. Tikhomirov, A. Chen, S. Eidelman, M. Nakao, S. McOnie, Antonio Limosani, K. Vervink, K. Trabelsi, K. Inami, Vladislav Balagura, K. Kinoshita, G. N. Taylor, J. G. Shiu, Phillip Urquijo, P. Krokovny, H. Hayashii, H. Miyata, Y. Hoshi, J. Schümann, K. Hayasaka, G. R. Moloney, K. Senyo, D. Liventsev, G. S. Varner, D. H. Kah, R. Itoh, P. Wang, and Masashi Hazumi
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Elementary particle, Photon energy, Kinetic energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, B meson, 010306 general physics, Lepton
Abstract: Using the previous Belle measurement of the inclusive photon energy in B→Xsγ decays, we determine the first and second moments of this spectrum for minimum photon energies in the B meson rest frame ranging from 1.8 to 2.3 GeV. Combining these measurements with recent Belle data on the lepton energy and hadronic mass moments in B→Xclν decays, we perform fits to theoretical expressions derived in the 1S and kinetic mass schemes and extract the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vcb, the b-quark mass, and other nonperturbative parameters. In the 1S scheme analysis we find |Vcb|=(41.56±0.68(fit)±0.08(τB))×10-3 and mb1S=(4.723±0.055)GeV. In the kinetic scheme, we obtain |Vcb|=(41.58±0.69(fit)±0.08(τB)±0.58(th))×10-3 and mbkin=(4.543±0.075)GeV. © 2008 The American Physical Society.
Published: 2008

32. Measurement ofB(Ds+→μ+νμ)

Author: L. Widhalm, I. Adachi, H. Aihara, T. Aushev, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, I. Bedny, V. Bhardwaj, U. Bitenc, S. Blyth, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, I.-S. Cho, Y. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, P. Goldenzweig, B. Golob, H. Ha, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, D. H. Kah, J. H. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kumar, C. C. Kuo, Y. Kuroki, A. Kuzmin, Y.-J. Kwon, J. Lee, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, S.-W. Lin, C. Liu, D. Liventsev, F. Mandl, A. Matyja, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, G. R. Moloney, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, R. Seidl, A. Sekiya, K. Senyo, M. Shapkin, H. Shibuya, J.-G. Shiu, J. B. Singh, A. Somov, S. Stanič, M. Starič, T. Sumiyoshi, S. Y. Suzuki, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, I. Tikhomirov, K. Trabelsi, S. Uehara, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. Vervink, C. H. Wang, M.-Z. Wang, P. Wang, Y. Watanabe, R. Wedd, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, Z. P. Zhang, V. Zhilich, A. Zupanc, and O. Zyukova
Subjects: Physics, Particle physics, Branching fraction, High Energy Physics::Lattice, High Energy Physics::Phenomenology, General Physics and Astronomy, Type (model theory), Belle experiment, law.invention, Momentum, KEKB, Pion, law, High Energy Physics::Experiment, Neutrino, Nuclear Experiment, Collider
Abstract: We present a measurement of the branching fraction $B(D_s^+\to\mu^+\nu_\mu)$ using a 548 fb$^{-1}$ data sample collected by the Belle experiment at the KEKB $e^+e^-$ collider. The $D_s$ momentum is determined by reconstruction of the system recoiling against $DK\gamma X$ in events of the type $e^+e^-\to D_s^\ast DKX, D_s^\ast \to D_s\gamma$, where $X$ represents additional pions or photons from fragmentation. The full reconstruction method provides high resolution in the neutrino momentum and thus good background separation, equivalent to that reached by experiments at the tau-charm factories. We obtain the branching fraction $B(D_s^+\to\mu^+\nu_\mu) = (6.44 \pm 0.76({\rm stat}) \pm 0.57({\rm syst})) \cdot 10^{-3}$, implying a $D_s$ decay constant of $f_{D_s} = (275 \pm 16({\rm stat}) \pm 12({\rm syst}))$ MeV.
Published: 2008

33. Beam test results from a prototype for the delphi microvertex detector

Author: Achille Stocchi, A. Peisert, Marco Battaglia, M. Gröne, W. Kucewicz, A. Zalewska, M. Mazzucato, G. Maehlum, M. Turala, V. Chabaud, L. Hubbeling, G. Vegni, Anders W. Sandvik, N. Redaelli, Renato Turchetta, A. Czermak, Phillip Allport, Matteo Pegoraro, H. J. Seebrunner, Pawel Jalocha, Michael Flohr, Tuure Tuuva, Clara Troncon, Massimo Caccia, G. Barichello, Hans Dijkstra, P. Kapusta, Roland Horisberger, F. Simonetto, Chiara Meroni, E. Sundell, M. Tyndel, and P. Weilhammer
Subjects: Very-large-scale integration, Physics, Nuclear and High Energy Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Readout electronics, 01 natural sciences, 0103 physical sciences, Measurement precision, High Energy Physics::Experiment, Detectors and Experimental Techniques, 010306 general physics, business, Instrumentation, Image resolution, computer, Beam (structure), Delphi, Computer hardware, computer.programming_language
Abstract: Results are presented from a test in the CERN SPS North Area of a prototype of the DELPHI microvertex detector. Full-sized modules built up from prototype ac-coupled detectors and VLSI readout electronics were used. The spatial resolution of the detectors equipped with prototype VLSI chips was measured to be 6.5 μm. The system aspects, including the readout, were found to work well. Extrapolating to the final components we expect to achieve a measurement precision of 5 μm with the DELPHI microvertex detector.
Published: 1990

34. Search for the t and b' quarks in hadronic decays of the Z0 boson

Author: P. Abreu, W. Adam, F. Adami, T. Adye, G.D. Alekseev, J.V. Allaby, P. Allen, S. Almehed, F. Alted, S.J. Alvsvaag, U. Amaldi, E. Anassontzis, W.D. Apel, B. Asman, C. Astor Ferreres, J.E. Augustin, A. Augustinus, P. Baillon, P. Bambade, F. Barao, G. Barbiellini, D.Yu. Bardin, A. Baroncelli, O. Barring, W. Bartl, M.J. Bates, B.V. Batyunia, M. Baubillier, K.H. Becks, C.J. Beeston, P. Beilliere, I. Belokopytov, P. Beltran, D. Benedic, J.M. Benlloch, M. Berggren, D. Bertrand, S. Biagi, F. Bianchi, J.H. Bibby, M.S. Bilenky, P. Billor, J. Bjarne, D. Bloch, P.N. Bogolubov, D. Bollini, T. Bolognese, M. Bonapart, Y.E. Bonyushkin, P.S.L. Booth, M. Boratav, P. Borgeaud, H. Borner, C. Bosio, O. Botner, B. Bouquet, M. Bozzo, S. Braibant, P. Branchini, K.D. Brand, R.A. Brenner, C. Bricman, R.C.A. Brown, N. Brummer, J.M. Brunet, L. Bugge, T. Buran, H. Burmeister, C.M. Buttar, J.A.M.A. Buytaert, M. Caccia, M. Calvi, A.J. Camacho Rozas, J.E. Campagne, A. Campion, T. Camporesi, V. Canale, F. Cao, L. Carroll, C. Caso, E. Castelli, M.V. Castillo Gimenez, A. Cattai, F.R. Cavallo, L. Cerrito, P. Charpentier, P. Checchia, G.A. Chelkov, L. Chevalier, P.V. Chliapnikov, V. Chorowicz, R. Cirio, M.P. Clara, J.L. Contreras, R. Contri, G. Cosme, F. Couchot, H.B. Crawley, D. Crennel, M. Cresti, G. Crosetti, N. Crosland, M. Crozon, J. Cuevas Maestro, S. Czellar, S. Dagoret, E. Dahl-Jensen, B. D'Almagne, M. Dam, G. Damgaard, G. Darbo, E. Daubie, M. Davenport, P. David, A. De Angelis, M. De Beer, H. De Boeck, W. De Boer, C. De Clercq, M.D.M. De Fez Laso, N. De Groot, C. De La Vaissiere, B. De Lotto, C. Defoix, D. Delikaris, P. Delpierre, N. Demaria, L. Di Ciaccio, A.N. Diddens, H. Dijkstra, F. Djama, J. Dolbeau, K. Doroba, M. Dracos, J. Drees, M. Dris, W. Dulinski, R. Dzhelyadin, D.N. Edwards, L.O. Eek, P.A.M. Eerola, G. Ekelop, G. Ekspong, J.P. Engel, V. Falaleev, A. Fenyuk, M. Fernandez Alonso, A. Ferrer, S. Ferroni, T.A. Filippas, A. Firestone, H. Foeth, E. Fokitis, F. Fontanelli, H. Forsbach, B. Franek, K.E. Fransson, P. Frenkiel, D.C. Fries, R. Fruhwirth, F. Fulda-Quenzer, H. Fuerstenau, J. Fuster, J.M. Gago, G. Galeazzi, D. Gamba, U. Gasparini, P. Gavillet, S. Gawne, E.N. Gazis, P. Giacomelli, K.W. Glitza, R. Gokieli, V.M. Golovatyuk, A. Goobar, G. Gopal, M. Gorski, Yu. Gouz, V. Gracco, A. Grant, F. Grard, E. Graziani, I.A. Gritsaenko, M.H. Gros, G. Grosdidier, B. Grossetete, S. Gumenyuk, J. Guy, F. Hahn, M. Hahn, S. Haider, Z. Hajduk, A. Hakansson, A. Hallgren, K. Hamacher, G. Hamel De Monchenault, J.F. Harris, B. Heck, I. Herbst, J.J. Hernandez, P. Herquet, H. Herr, E. Higon, H.J. Hilke, T. Hofmokl, R. Holmes, S.O. Holmgren, J.E. Hooper, M. Houlden, J. Hrubec, P.O. Hulth, K. Hultqvist, D. Husson, B.D. Hyams, P. Ioannou, P.S. Iversen, J.N. Jackson, P. Jalocha, G. Jarlskog, P. Jarry, B. Jean-Marie, E.K. Johansson, M. Jonker, L. Jonsson, P. Juillot, R.B. Kadyrov, V.G. Kadyshevsky, G. Kalkanis, G. Kalmus, G. Kantardjian, F. Kapusta, P. Kapusta, S. Katsanevas, E.C. Katsoufis, R. Keranen, J. Kesteman, B.A. Khomenko, B. king, H. Klein, W. Klempt, A. Klovning, P. Kluit, J.H. Koehne, B. Koene, P. Kokkinias, M. Kopf, M. Koratzinos, K. Korcyl, A.V. Korytov, B. Korzen, M. Kostrikov, C. Kourkoumelis, T. Kreuzberger, J. Krolikowski, U. Kruener-Marquis, W. Krupinski, W. Kucewicz, K. Kurvinen, M.I. Laakso, C. Lambropoulos, J.W. Lamsa, L. Lanceri, V. Lapin, J.P. Laugier, R. Lauhakangas, P. Laurikainen, G. Leder, F. Ledroit, J. Lemonne, G. Lenzen, V. Lepeltier, A. Letessier-Selvon, P.K. Lichtenwagner, E. Lieb, E. Lilestol, E. Lillethun, I. Lippi, R. Llosa, B. Loerstad, M. Lokajicek, J.G. Loken, A. Lopez, M.A. Lopez Aguera, D. Loukas, J.J. Lozano, R. Lucock, B. Lund-Jensen, P. Lutz, L. Lyons, G. Maehlum, J. Maillard, A. Maltezos, F. Mandl, J. Marco, J.C. Marin, A. Markou, L. Mathis, C. Matteuzzi, G. Matthiae, M. Mazzucato, M. Mc Cubbin, R. Mc Kay, E. Menichetti, C. Meroni, W.T. Meyer, W.A. Mitaroff, G.V. Mitselmakher, U. Mjoernmark, T. Moa, R. Moeller, K. Moenig, M.R. Monge, P. Morettini, H. Mueller, H. Muller, G. Myatt, F. Naraghi, U. Nau-Korzen, F.L. Navarria, P. Negri, B.S. Nielsen, M. Nigro, V. Nikolaenko, V. Obraztsov, R. Orava, A. Ouraou, R. Pain, K. Pakonski, H. Palka, T. Papadopoulou, L. Pape, P. Pasini, A. Passeri, M. Pegoraro, V. Perevozchikov, M. Pernicka, M. Pimenta, O. Pingot, C. Pinori, A. Pinsent, M.E. Pol, G. Polok, P. Poropat, P. Privitera, A. Pullia, J. Pyyhtia, A.A. Rademakers, D. Radojicic, S. Ragazzi, W.H. Range, P.N. Ratoff, A.L. Read, N.G. Redaelli, M. Regler, D. Reid, P.B. Renton, L.K. Resvanis, F. Richard, J. Ridky, G. Rinaudo, I. Roditi, A. Romero, P. Ronchese, E. Rosenberg, U. Rossi, E. Rosso, P. Roudeau, T. Rovelli, V. Ruhlmann, A. Ruiz, H. Saarikko, D. Sacco, Y. Sacquin, A.B. Sadovsky, E. Sanchez, E. Sanchis, M. Sannino, M. Schaeffer, W. Schneider, F. Scuri, A. Sebastia, A.M. Segar, R. Sekulin, M. Sessa, G. Sette, R. Seufert, R.C. Shellard, P. Siegrist, S. Simonetti, F. Simonetto, T.B. Skaali, J. Skeens, G. Skjevling, G. Smadja, G.R. Smith, R. Sosnowski, K. Spang, T. Spassoff, E. Spiriti, S. Squarcia, H. Staeck, C. Stanescu, G. Stavropoulos, F. Stichelbaut, A. Stocchi, J. Strauss, R. Strub, C. Stubenrauch, M. Szczekowski, M. Szeptycka, P. Szymanski, S. Tavernier, G. Theodosiou, A. Tilquin, J. Timmermans, L.G. Tkatchev, D.Z. Toet, A.K. Topphol, L. Tortora, D. Treille, U. Trevisan, G. Tristram, C. Troncon, E.N. Tsyganov, M. Turala, R. Turchetta, M.L. Turluer, T. Tuuva, I.A. Tyapkin, M. Tyndel, S. Tzamarias, F. Udo, S. Ueberschaer, V.A. Uvarov, G. Valenti, E. Vallaza, J.A. Valls, G.W. Van Apeldoorn, P. Van Dam, W.K. Van Doninck, N. Van Eijndhoven, C. Vander Velde, J. Varela, P. Vaz, G. Vegni, M.E. Veitch, E. Vela, J. Velasco, L. Ventura, W. Venus, F. Verbeure, L. Vibert, D. Vilanova, E.V. Vlasov, A.S. Vodopianov, M. Vollmer, G. Voulgaris, M. Voutilainen, H. Wahlen, C. Walck, F. Waldner, M. Wayne, P. Weilhammer, J. Werner, A.M. Wetherell, J.H. Wickens, J. Wikne, W.S.C. Williams, M. Winter, D. Wormald, G. Wormser, K. Woschnagg, N. Yamdagni, P. Yepes, A. Zaitsev, A. Zalewska, P. Zalewski, E. Zevgolatakos, G. Zhang, N.I. Zimin, A.I. Zinchenko, R. Zitoun, R. Zukanovich Funchal, G. Zumerle, J. Zuniga, Heyd, Yvette, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), DELPHI, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Abreu, P., Adam, W., and Canale, Vincenzo
Subjects: Quark, Nuclear and High Energy Physics, Top quark, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Electron–positron annihilation, Hadron, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Collider, Charged current, Boson, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Physique des particules élémentaires, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: We present a search for the third generation up type quark t and a possible fourth down type quark b' in hadronic Z0 decays observed in DELPHI at the LEP collider. For any scenario with a decay through the charged current or into a charged Higgs with a mass at least 6 GeV/c2 below the t and 3 GeVc2 below the b' mass, we set a lower limit for the t quark mass at 44.0 GeV/c2 and for the b' mass at 44.5 GeV/c2. For specific scenarios the mass limits are slightly higher, e.g. for charged current decays the limits are 44.5 and 45.0 GeV/c2 respectively, where all limits are given at a 95% confidence level. © 1990., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 1990

35. Status of the DELPHI vertex detector: Alignment methods and geometrical resolution

Author: G. Kalmus, A. Peisert, Renato Turchetta, B.D. Hyams, Massimo Caccia, Pawel Jalocha, A. Smith, G. Vegni, P. Weilhammer, P. Kapusta, A. Zalewska, Tuure Tuuva, G. Maelhum, M. Mazzuccato, Clara Troncon, Achille Stocchi, Matteo Pegoraro, M. Turala, E. Sundell, W. Kucewicz, Chiara Meroni, Mikko Laakso, M. Tyndel, Roland Horisberger, Phillip Allport, L. Hubbeling, Hans Dijkstra, N. Redaelli, and Paul Seller
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Resolution (electron density), 01 natural sciences, law.invention, law, 0103 physical sciences, Calibration, Electronic engineering, High Energy Physics::Experiment, Vertex detector, 010306 general physics, Collider, Instrumentation, computer, Image resolution, Delphi, Silicon microstrip detectors, computer.programming_language
Abstract: Progress in the construction of the DELPHI silicon microstrip vertex detector is described and results obtained for the various components are presented. Problems related to the design, construction and survey of a system capable of maintaining in a collider environment the resolution achievable by microstrip detectors are discussed. Finally, some plans for the future are also reported.
Published: 1990

36. Observation of a Charmoniumlike State Produced in Association with aJ/ψine+e−Annihilation ats≈10.6 GeV

Author: E. Nakano, H. Ozaki, A. Yamaguchi, S. W. Lin, D. Epifanov, Masashi Hazumi, X. C. Tian, N. Tamura, C. C. Wang, T. Iijima, T. Uglov, Yoji Hasegawa, C. C. Zhang, Noriaki K. Sato, Y. Sakai, M. Starič, Marco Barbero, M. Dash, A. Chen, U. Bitenc, C. H. Wang, K. S. Park, Jie Zhang, Y. Iwasaki, D. Liventsev, Y. Yamashita, B. Golob, I. Bizjak, S. Uehara, S. L. Olsen, O. Schneider, G. Gokhroo, K. Trabelsi, G. S. Varner, H. Ha, I. Bedny, Zhilich, S. Y. Suzuki, Y. Chao, A. J. Schwartz, H. J. Kim, A. Ishikawa, I. Adachi, Y. B. Hsiung, Zhenyu Zhang, Yasushi Nagasaka, F. Takasaki, H. R. Khan, C. W. Park, T. E. Browder, T. Aushev, B. Shwartz, G. Leder, S. R. Hou, S. Villa, S. K. Choi, A. Drutskoy, Anton Poluektov, Antonio Limosani, W. A. Mitaroff, H. Miyata, Young-Il Choi, K. Miyabayashi, S. Ogawa, Y. Hoshi, F. Mandl, T. J. Gershon, H. Hayashii, E. Won, K. Hayasaka, M. Danilov, O. Nitoh, M. E. Sevior, C. C. Kuo, P. Krokovny, K. Senyo, T. Kawasaki, Y. Unno, P. Pakhlov, M. Z. Wang, K. Kinoshita, Hiroaki Aihara, J. Dalseno, J. Ying, Rainer Stamen, J. S. Lange, Aulchenko, H. Park, K. Ueno, L. Hinz, S. Nishida, W. S. Hou, Y. Mikami, K. Arinstein, A. Somov, Long Zhang, S. M. Kim, Q. L. Xie, H. Kichimi, Kazuo Abe, B. D. Yabsley, Y. Asano, P. Kapusta, S. Okuno, Y. Teramoto, R. Mizuk, T. Lesiak, M. Bračko, M. Yamauchi, A. M. Bakich, T. Ohshima, A. Chuvikov, N. Gabyshev, M. H. Tanaka, T. Sumiyoshi, Phillip Urquijo, H. Palka, L. E. Piilonen, T. Schietinger, Balagura, M. Iwasaki, J. Haba, A. Bondar, S. Korpar, Jolanta Brodzicka, R. Chistov, R. Seidl, Tariq Aziz, Y. Choi, A.S. Kuzmin, S. Eidelman, S. Cole, M. Nakao, Kevin Varvell, A. Matyja, S. Fratina, Sidorov, T. Tsukamoto, T. Matsumoto, Byung Gu Cheon, S. Uno, and L. S. Peak
Subjects: Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, Resonance, Computer Science::Computation and Language (Computational Linguistics and Natural Language and Speech Processing), State (functional analysis), 01 natural sciences, Nuclear physics, Particle decay, KEKB, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics
Abstract: We report the first observation of a charmoniumlike state recoiling from the $J/\ensuremath{\psi}$ in the inclusive process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}+\mathrm{\text{anything}}$ at a mass of $(3.943\ifmmode\pm\else\textpm\fi{}0.006\ifmmode\pm\else\textpm\fi{}0.006)\text{ }\text{ }\mathrm{GeV}/{c}^{2}$. We also observe the decay of this state into ${D}^{*}\overline{D}$ and determine its intrinsic width to be less than $52\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ at the 90% C.L. These results are obtained from a $357\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected with the Belle detector near the $\ensuremath{\Upsilon}(4S)$ resonance, at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider.
Published: 2007

37. Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs ine+e−Annihilation at Belle

Author: O. Nitoh, P. Pakhlov, Kazuo Abe, K. Sumisawa, Y. Asano, P. Kapusta, W. Bartel, S. Okuno, Hiroaki Aihara, A. Ogawa, E. Nakano, M. Bračko, Andrej Gorišek, N. Satoyama, H. Shibuya, H. Hayashii, C. H. Wang, M. Nakao, M. Iwasaki, Masashi Hazumi, H. Park, A. Bozek, Rainer Stamen, M. Grosse Perdekamp, Y. Yamashita, A. Yamaguchi, S. W. Lin, Y. Teramoto, T. Aushev, Bruce Yabsley, J. S. H. Lee, I. Nakamura, T. Okabe, T. Uglov, S. Uehara, F. Mandl, S. Nishida, H. Ha, Antonio Limosani, N. Katayama, K. Tamai, Samo Stanič, M. E. Sevior, D. Anipko, G. N. Taylor, J. S. Lange, L. S. Peak, T. Iijima, A. M. Bakich, Z. Natkaniec, T. Ohshima, A. Go, I. Adachi, Seong Keun Kim, S. Ogawa, N. Gabyshev, Y. Sakai, H. Miyata, Y. Hoshi, K. Senyo, Vladislav Balagura, W. S. Hou, S. L. Olsen, K. Inami, S. Villa, Y. Watanabe, P. Chang, T. E. Browder, T. Kawasaki, H. Kichimi, K. Hasuko, Y. Yusa, J. Schümann, K. Hayasaka, Noriaki K. Sato, S. R. Hou, T. Tsukamoto, Long Zhang, A. Matyja, N. Parslow, M. Danilov, T. Lesiak, D. Liventsev, Q. L. Xie, A. Chuvikov, C. C. Kuo, U. Bitenc, H. Miyake, Phillip Urquijo, J. Ying, H. Palka, L. E. Piilonen, I. Bizjak, M. Dash, Byung Gu Cheon, D. Zürcher, T. Schietinger, R. Kulasiri, G. S. Varner, R. Mizuk, B. Golob, Y. Iwasaki, M. Yamauchi, Y. J. Kwon, R. Itoh, Yu. V. Usov, J. Dragic, H. Kawai, S. Uno, O. Schneider, H. R. Khan, E. L. Barberio, Zhenyu Zhang, Y. Miyazaki, C. C. Wang, X. C. Tian, E. Won, T. Hokuue, S. Eidelman, S. Fratina, T. Matsumoto, N. Soni, T. J. Gershon, Takehiko Mori, R. Seidl, A. Somov, Rakesh Kumar, Y. Choi, A.S. Kuzmin, S. Blyth, S. M. Kim, J. H. Kang, J. Dalseno, A. Ishikawa, A. Bay, F. Takasaki, C. W. Park, J. Li, M. Shapkin, H. Ozaki, V.N. Zhilich, R. Pestotnik, W. A. Mitaroff, Young-Il Choi, Masashi Tanaka, A. Chen, G. Gokhroo, and M. Starič
Subjects: Quark, Physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, Nuclear Theory, High Energy Physics::Phenomenology, Hadron, General Physics and Astronomy, 01 natural sciences, Nuclear physics, Baryon, Pair production, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Spin-½
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

38. Charm hadrons from fragmentation andBdecays ine+e−annihilation ats=10.6 GeV

Author: M. Z. Wang, I. Bedny, J. Li, O. Nitoh, Kazuo Abe, B. D. Yabsley, Y. Yamashita, Y. Asano, P. Kapusta, S. Okuno, G. N. Taylor, J. S. Lange, T. Aushev, A. Chen, A. Go, T. Iijima, Andrej Gorišek, Rainer Stamen, H. Ozaki, S. Uehara, S. Uno, C. Schwanda, V.N. Zhilich, T. Nagamine, M. Tanaka, N. Katayama, R. Pestotnik, V.A. Sidorov, Rolf Seuster, Jolanta Brodzicka, Y. Teramoto, N. Tamura, E. Nakano, I. Bizjak, Y. Sakai, W. A. Mitaroff, T. Okabe, G. S. Varner, S. R. Hou, Y. Miyazaki, X. C. Tian, A. Yamaguchi, R. Itoh, S. W. Lin, F. Fang, Y. Hoshi, J. S. Kang, Phillip Urquijo, M. Yamauchi, H. Shibuya, H. Kawai, M. Starič, Y. Onuki, A. Drutskoy, J. Schümann, K. Hayasaka, Byung Gu Cheon, Yasushi Nagasaka, Y. Yusa, Q. L. Xie, T. J. Gershon, P. Krokovny, Noriaki K. Sato, H. Palka, L. E. Piilonen, N. Soni, T. Schietinger, Y. Iwasaki, K. Ueno, T. Kawasaki, C. H. Wang, Y. J. Kwon, R. Kulasiri, U. Bitenc, H. Kichimi, J. Ying, O. Schneider, S. Cole, T. Lesiak, H. R. Khan, M. Danilov, K. S. Park, F. Mandl, K. Tamai, S. L. Olsen, C. C. Kuo, Y. Choi, M. E. Sevior, S. Eidelman, L. Y. Dong, P. Pakhlov, H. Park, A. Bozek, S. Nishida, G. Gokhroo, M. Dash, M. Bračko, Samo Stanič, M. Barbero, A. M. Bakich, T. Ohshima, B. Golob, W. S. Hou, Long Zhang, A. Kuzmin, Z. P. Zhang, S. Ogawa, R. Mizuk, Masashi Hazumi, H. Aihara, T. Uglov, M. Nakao, H. Miyake, J. H. Kang, H. J. Kim, A. Somov, J. Dragic, S. Y. Suzuki, J. Dalseno, K. Ikado, C. C. Wang, S. M. Kim, A. Chuvikov, F. Takasaki, C. W. Park, and P. Križan
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, Hadron, Particle identification, Charm quark, Charmed baryons, Nuclear physics, KEKB, High Energy Physics::Experiment, B meson, Nuclear Experiment
Abstract: We present an analysis of charm quark fragmentation at 10.6 GeV, based on a data sample of 103 fb{sup -1} collected by the Belle detector at the KEKB accelerator. We consider fragmentation into the main charmed hadron ground states, namely D{sup 0},D{sup +},D{sub s}{sup +} and {lambda}{sub c}{sup +}, as well as the excited states D*{sup 0} and D*{sup +}. The fragmentation functions are important to measure as they describe processes at a low energy scale, where calculations in perturbation theory lead to large uncertainties. Fragmentation functions can also be used as input distributions for Monte Carlo generators. Additionally, we determine the average number of these charmed hadrons produced per B decay at the {upsilon}(4S) resonance and measure the distribution of their production angle in e{sup +}e{sup -} annihilation events and in B decays.
Published: 2006

39. Studies ofCPViolation inB→J/ψK*Decays

Author: R. Itoh, Y. Onuki, K. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, E. Barberio, A. Bay, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, Y. Enari, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, J. Haba, K. Hara, T. Hara, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, S. Kumar, C. C. Kuo, A. Kusaka, A. Kuzmin, Y.-J. Kwon, G. Leder, S. E. Lee, T. Lesiak, J. Li, S.-W. Lin, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, T. Nagamine, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, N. Parslow, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, M. Rozanska, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, P. Schönmeier, J. Schümann, A. J. Schwartz, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, Y. Watanabe, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Null (mathematics), General Physics and Astronomy, 01 natural sciences, law.invention, Standard Model, Nuclear physics, KEKB, Triple product, law, 0103 physical sciences, CP violation, High Energy Physics::Experiment, B meson, 010306 general physics, Collider
Abstract: CP violation in B-->J/PsiK* decays is studied using an angular analysis in a data sample of 253 fb(-1) recorded with the Belle detector at the KEKB e(+)e(-) collider. The flavor separated measurements of the decay amplitudes indicate no evidence for direct CP violation. T-odd CP violation is studied using the asymmetries in triple product correlations, and the results are consistent with the standard model null predictions. The time-dependent angular analysis gives the following values of CP-violating parameters: sin(2phi(1) = 0.24 +/- 0.31 +/- 0.05 and cos(2phi(1)=0.56 +/- 0.79 +/- 0.11.
Published: 2005

40. Measurement of Polarization and Triple-Product Correlations inB→ϕK*Decays

Author: K.-F. Chen, K. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, M.-C. Chang, P. Chang, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, Y. Enari, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, J. Haba, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, S. Kumar, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. E. Lee, Y.-J. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, N. Parslow, L. S. Peak, R. Pestotnik, L. E. Piilonen, N. Root, M. Rozanska, H. Sagawa, Y. Sakai, T. R. Sarangi, N. Sato, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, K. Senyo, M. E. Sevior, T. Shibata, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, P. Urquijo, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, J. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Žontar, and D. Zürcher
Subjects: Physics, 010308 nuclear & particles physics, Electron–positron annihilation, General Physics and Astronomy, Polarization (waves), 01 natural sciences, Helicity, Nuclear physics, KEKB, Amplitude, Triple product, 0103 physical sciences, CP violation, High Energy Physics::Experiment, 010306 general physics, Storage ring
Abstract: We present measurements of decay amplitudes and triple-product correlations in B-->phiK* decays based on 253 fb(-1) of data recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. The decay amplitudes for the three different helicity states are determined from the angular distributions of final-state particles. The longitudinal polarization amplitudes are found to be 0.45 +/- 0.05 +/- 0.02 for B0-->phiK(*0) and 0.52 +/- 0.08 +/- 0.03 for B+ -->phiK(*+) decays. CP- and T-odd CP-violating triple-product asymmetries are measured to be consistent with zero.
Published: 2005

41. Improved measurement ofCP-violation parameterssin 2ϕ1and|λ|,Bmeson lifetimes, andB0-B¯0mixing parameterΔmd

Author: K. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, Y. Ban, S. Banerjee, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, P. Chang, Y. Chao, A. Chen, K.-F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, V. Eiges, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, J. Haba, K. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, I. Higuchi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, Y. Iwasaki, H. Kakuno, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, J. H. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, C. C. Kuo, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, T. Nagamine, Y. Nagasaka, I. Nakamura, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, N. Parslow, R. Pestotnik, L. E. Piilonen, M. Rozanska, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, T. Shibata, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, Y. Ushiroda, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. Watanabe, Y. Watanabe, B. D. Yabsley, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, J. Ying, Y. Yusa, C. C. Zhang, J. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Combinatorics, Nuclear and High Energy Physics, KEKB, Meson, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We present a precise measurement of the standard model $CP$-violation parameter $\mathrm{sin} 2{\ensuremath{\phi}}_{1}$, the direct $CP$ violation parameter $|\ensuremath{\lambda}|$, the lifetimes of charged and neutral $B$ mesons and their ratio, and the ${B}^{0}$-${\overline{B}}^{0}$ mixing parameter $\ensuremath{\Delta}{m}_{d}$ based on a sample of $152\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. One of two $B$ mesons is fully reconstructed in a $CP$-eigenstate or a flavor-eigenstate decay channel. The flavor of the accompanying $B$ meson is identified from its decay products. From the distributions of the time interval between the two $B$ meson decay points, we obtain $\mathrm{sin} 2{\ensuremath{\phi}}_{1}=0.728\ifmmode\pm\else\textpm\fi{}0.056(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.023(\mathrm{syst})$, $|\ensuremath{\lambda}|=1.007\ifmmode\pm\else\textpm\fi{}0.041(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.033(\mathrm{syst})$, ${\ensuremath{\tau}}_{{B}^{0}}=[1.534\ifmmode\pm\else\textpm\fi{}0.008(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.010(\mathrm{syst})]\text{ }\text{ }\mathrm{ps}$, ${\ensuremath{\tau}}_{{B}^{+}}=[1.635\ifmmode\pm\else\textpm\fi{}0.011(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.011(\mathrm{syst})]\text{ }\text{ }\mathrm{ps}$, ${\ensuremath{\tau}}_{{B}^{+}}/{\ensuremath{\tau}}_{{B}^{0}}=1.066\ifmmode\pm\else\textpm\fi{}0.008(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.008(\mathrm{syst})$ and $\ensuremath{\Delta}{m}_{d}=[0.511\ifmmode\pm\else\textpm\fi{}0.005(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.006{(\mathrm{syst})]\text{ }\text{ }\mathrm{ps}}^{\ensuremath{-}1}$. The results for $\mathrm{sin} 2{\ensuremath{\phi}}_{1}$ and $|\ensuremath{\lambda}|$ are consistent with the standard model expectations. The significance of the observed deviation from unity in the lifetime ratio exceeds 5 standard deviations.
Published: 2005

42. Study of Time-DependentCPViolation inB0→J/ψπ0Decays

Author: S. U. Kataoka, K. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, A. Bondar, M. Bračko, Y. Chao, A. Chen, W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, M. Danilov, M. Dash, L. Y. Dong, J. Dragic, S. Eidelman, V. Eiges, Y. Enari, F. Fang, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, J. Haba, K. Hara, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W.-S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. R. Khan, H. J. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, C. C. Kuo, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. E. Lee, S. H. Lee, T. Lesiak, J. Li, S.-W. Lin, J. MacNaughton, F. Mandl, T. Matsumoto, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, T. Mori, T. Nagamine, Y. Nagasaka, E. Nakano, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, L. S. Peak, L. E. Piilonen, F. J. Ronga, M. Rozanska, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, J. Schümann, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, T. Shibata, H. Shibuya, J. B. Singh, A. Somov, N. Soni, R. Stamen, M. Starič, K. Sumisawa, T. Sumiyoshi, O. Tajima, F. Takasaki, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, T. Tsukamoto, K. Ueno, S. Uno, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M. Watanabe, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, Heyoung Yang, J. Ying, Y. Yuan, S. L. Zang, C. C. Zhang, J. Zhang, L. M. Zhang, Z. P. Zhang, V. Zhilich, T. Ziegler, and D. Žontar
Subjects: Physics, Particle physics, Electron–positron annihilation, media_common.quotation_subject, General Physics and Astronomy, Resonance, Asymmetry, law.invention, Nuclear physics, KEKB, law, CP violation, High Energy Physics::Experiment, B meson, Nuclear Experiment, Collider, media_common
Abstract: The CP asymmetry parameters in the decay B0(B0) → J/ψπ0, were described. The measurement of the CP asymmetry parameters was based on a 140 fb-1 data sample, which was accumulated at the γ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider. It was observed that one neutral B meson flavor was identified by its decay products. The results show values of the CP-violating parameters were found to be of the order of S J/ψπ o = -0.72∓0.42(stat)∓0.09(syst) and AJ/ψπ 0 = -0.01∓0.29(stat)∓0. 03(syst).
Published: 2004

43. Observation ofB+→ψ(3770)K+

Author: R. Chistov, K. Abe, T. Abe, H. Aihara, M. Akatsu, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, S. Banerjee, A. Bay, I. Bedny, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, Y. Chao, K.-F. Chen, B. G. Cheon, Y. Choi, Y. K. Choi, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, D. Epifanov, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, T. Hara, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, H. Iwasaki, M. Iwasaki, R. Kagan, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, H. Kichimi, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, H. Matsumoto, T. Matsumoto, A. Matyja, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, H. Palka, H. Park, N. Parslow, L. E. Piilonen, H. Sagawa, Y. Sakai, T. R. Sarangi, O. Schneider, A. J. Schwartz, S. Semenov, M. E. Sevior, B. Shwartz, V. Sidorov, R. Stamen, S. Stanič, M. Starič, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, S. Uno, G. Varner, C. C. Wang, C. H. Wang, M.-Z. Wang, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, J. Ying, C. C. Zhang, Z. P. Zhang, V. Zhilich, D. Žontar, and D. Zürcher
Subjects: Nuclear physics, Physics, Electromagnetic calorimeter, KEKB, Meson, law, Branching fraction, General Physics and Astronomy, Resonance, High Energy Physics::Experiment, B meson, Collider, law.invention
Abstract: The observation of the decay B+→ψ(3770)K+, where the ψ(3770) was constructed in the D0D0 and D+D- decay channels, was reported. The branching fraction for the decay was measured and a 90% confidence level upper limit was set for the decay. Data was collected at the Y(4S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider. Candidate π0 mesons were identified as pairs of non-charged-track-associated electromagnetic calorimeter clusters.
Published: 2004

44. Study ofCPViolating Effects in Time DependentB0(B̄0)→D(*)∓π±Decays

Author: T. R. Sarangi, K. Abe, T. Abe, H. Aihara, Y. Asano, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, S. Banerjee, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, M. Bračko, T. E. Browder, M.-C. Chang, P. Chang, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, J. Haba, K. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, M. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, T. H. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, T. Lesiak, J. Li, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, D. Mohapatra, G. R. Moloney, T. Nagamine, Y. Nagasaka, T. Nakadaira, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, K. S. Park, N. Parslow, L. E. Piilonen, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, N. Soni, R. Stamen, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. K. Swain, O. Tajima, F. Takasaki, M. Tanaka, G. N. Taylor, T. Tomura, K. Trabelsi, T. Tsuboyama, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, M.-Z. Wang, M. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, J. Ying, Y. Yusa, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, T. Ziegler, and D. Žontar
Subjects: Nuclear physics, Physics, Particle physics, Pion, Cabibbo–Kobayashi–Maskawa matrix, General Physics and Astronomy, CP violation, High Energy Physics::Experiment, B meson, Nuclear Experiment, Flavor, Lepton
Abstract: The measurements of time-dependent decay rates for B 0(B0) → D(*)∓π ∓ decays and extraction of CP violation parameters containing φ3 were discussed. It was found that a 140 fb-1 data sample, which contained 152 × 106 BB events, was used in the measurement. Charged leptons, pions and kaons were used to identify the flavor of the accompanying B meson. The results show that |2R D*π sin(2φ1 + φ3)| = 0.060 ± 0.040(stat) ± 0.019(syst) can be obtained.
Published: 2004

45. Measurement of the CP Asymmetry in B→X_{s}γ

Author: S. Nishida, K. Abe, T. Abe, H. Aihara, Y. Asano, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, E. Banas, A. Bay, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, M.-C. Chang, P. Chang, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, A. Chuvikov, S. Cole, M. Danilov, M. Dash, L. Y. Dong, J. Dragic, S. Eidelman, V. Eiges, Y. Enari, D. Epifanov, F. Fang, S. Fratina, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, T. Kawasaki, H. Kichimi, H. J. Kim, S. K. Kim, T. H. Kim, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. E. Lee, S. H. Lee, J. Li, S.-W. Lin, J. MacNaughton, G. Majumder, F. Mandl, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, R. Mizuk, D. Mohapatra, G. R. Moloney, A. Murakami, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, M. Peters, L. E. Piilonen, F. J. Ronga, M. Rozanska, Y. Sakai, O. Schneider, J. Schümann, C. Schwanda, S. Semenov, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, A. Sugiyama, T. Sumiyoshi, S. Suzuki, O. Tajima, F. Takasaki, K. Tamai, M. Tanaka, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, C. H. Wang, M.-Z. Wang, Y. Watanabe, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Heyoung Yang, J. Ying, Z. P. Zhang, V. Zhilich, T. Ziegler, D. Žontar, and D. Zürcher
Subjects: Physics, Argus, Particle physics, Electron–positron annihilation, Gaussian, media_common.quotation_subject, Hadron, Monte Carlo method, General Physics and Astronomy, Asymmetry, Nuclear physics, symbols.namesake, Recoil, symbols, High Energy Physics::Experiment, B meson, computer, computer.programming_language, media_common
Abstract: The CP asymmetry in the B → Xsγ, where hadronic recoil system Xs is reconstructed, was investigated using pseudoreconstruction technique. Negligible contamination from b → dγ decays was observed, which were expected to have larger CP asymmetry. The qq and BB distributions were obtained from off-resonance data and Monte Carlo (MC) simulation. The results show that 50% error is assigned to Gaussian width and to ratio of the Gaussian and ARGUS function for rare B decays.
Published: 2004

46. Observation of RadiativeB→ϕKγDecays

Author: A. Drutskoy, K. Abe, T. Abe, H. Aihara, M. Akatsu, Y. Asano, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, Y. Chao, B. G. Cheon, R. Chistov, Y. Choi, A. Chuvikov, M. Danilov, M. Dash, L. Y. Dong, S. Eidelman, V. Eiges, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, J. Haba, C. Hagner, F. Handa, N. C. Hastings, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, M. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, Y.-J. Kwon, S. H. Lee, T. Lesiak, J. Li, J. MacNaughton, D. Marlow, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyata, D. Mohapatra, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, N. Parslow, M. Peters, L. E. Piilonen, N. Root, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, A. Satpathy, O. Schneider, J. Schümann, A. J. Schwartz, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, F. Takasaki, N. Tamura, M. Tanaka, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, Y. Yamada, Y. Yamashita, M. Yamauchi, Y. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Branching fraction, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Gamma ray, General Physics and Astronomy, Photon energy, Belle experiment, law.invention, Nuclear physics, KEKB, law, Radiative transfer, High Energy Physics::Experiment, Collider
Abstract: The radiative decay B-->phi K gamma is observed for the first time. The branching fraction for the charged B--->phi K- gamma decay mode is measured to be B(B--->phi K- gamma)=(3.4+/-0.9+/-0.4)x10(-6). The photon energy distribution for the B--->phi K- gamma decay is presented. The signal for the neutral B(0)-->phi K(0)gamma decay mode is not statistically significant and an upper limit, B(B(0)-->phi K(0)gamma)
Published: 2004

47. Measurements of the $D_{sJ}$ resonance properties

Author: G. R. Moloney, Mika Masuzawa, S. Uehara, Patrick Koppenburg, G. Leder, Y. Iwasaki, Y. J. Kwon, Gobinda Majumder, Hiroyuki Iwasaki, H. Palka, L. E. Piilonen, N. Katayama, T. Aushev, Masashi Hazumi, Norihito Ohuchi, Z. Natkaniec, R. Kulasiri, F. Mandl, M. H. Tanaka, T. Tsukamoto, M. E. Sevior, Hiroyuki Sagawa, W. Ostrowicz, S. Bahinipati, T. Matsumoto, T. Iijima, H. Miyata, Y. Hoshi, Y. Sakai, B. Golob, O. Schneider, R. Chistov, J. Ying, V.A. Sidorov, M. Yamauchi, D. Žontar, K. Trabelsi, P. Krokovny, Kazuro Furukawa, T. Sumiyoshi, H. J. Kim, A. Garmash, H. Park, Y. Yamashita, Y. Mikami, K. Ohmi, J. MacNaughton, W. S. Hou, Eiji Kikutani, H. Kawai, Heyoung Yang, Byung Gu Cheon, O. Nitoh, K. Senyo, Jung-Hyun Kim, K. S. Park, T. Nagamine, Yasushi Nagasaka, T. Hokuue, H. C. Huang, N. Kawamura, T. Kawasaki, S. Stanič, M. Iwasaki, N. Parslow, B. Shwartz, Chikara Fukunaga, A. Matyja, S. L. Olsen, Hiroaki Aihara, K. Inami, Ryuhei Sugahara, J. Dragic, Y. Chao, D. Liventsev, Yasuhiko Yamada, H. Shibuya, Tetsuo Shidara, Zhenyu Zhang, Toshihiro Mimashi, A. Bondar, Y. Watanabe, V. Eiges, A. Sugi, H. Kichimi, I. Bizjak, G. S. Varner, H. Yanai, M. Bračko, L. Y. Dong, Hirokazu Ikeda, S. K. Choi, C. W. Park, Tsukasa Aso, T. Abe, T. Tsuboyama, T. Lesiak, S. Uno, C. Schwanda, K. Kinoshita, S. Saitoh, S. Ogawa, T. J. Gershon, Kazuo Abe, B. D. Yabsley, T. Hara, Hitoshi Yamamoto, Y. Asano, P. Kapusta, Katsunobu Oide, M. Akemoto, S. Okuno, A. M. Bakich, T. Ohshima, E. Nakano, A. Chuvikov, M. Yoshida, S. Y. Suzuki, N. Gabyshev, I. Higuchi, A. Yamaguchi, K. Sumisawa, Jasvinder A. Singh, S. W. Lin, L. Hinz, M. Nakao, Y. Teramoto, Masafumi Tawada, T. Okabe, H. Hayashii, H. Ozaki, V.N. Zhilich, S. H. Lee, T. Tomura, J. H. Kang, S. Semenov, W. A. Mitaroff, Young-Il Choi, N. Soni, A. Ishikawa, A. Bay, Y. Ban, T. Nozaki, F. Takasaki, P. Križan, M. Starič, J. S. Kang, H. Nakazawa, G. Gokhroo, Y. Ogawa, Y. Yusa, S. Eidelman, A. J. Schwartz, F. Handa, S. Nishida, Y. Choi, A.S. Kuzmin, T. E. Browder, Takashi Nakamura, M. Danilov, P. Pakhlov, and A. Bozek
Subjects: Physics, Crystallography, High Energy Physics - Experiment (hep-ex), Radiative decay, General Physics and Astronomy, Resonance, FOS: Physical sciences, High Energy Physics::Experiment, Continuum (set theory), Nuclear Experiment, High Energy Physics - Experiment
Abstract: We report measurements of the properties of the $D_{sJ}^+(2317)$ and $D_{sJ}^+(2457)$ resonances produced in continuum $e^+ e^-$ annihilation near $\sqrt{s}=10.6 \mathrm{GeV}$. The analysis is based on an $86.9 \mathrm{fb^{-1}}$ data sample collected %at and 60 MeV below the $\Upsilon(4S)$ resonance with with the Belle detector at KEKB. We determine the masses to be $M(D_{sJ}^+(2317)) = 2317.2 \pm 0.5(\mathrm{stat}) \pm 0.9(\mathrm{syst}) \mathrm{MeV}/c^2$ and $M(D_{sJ}^+(2457))=2456.5 \pm 1.3(\mathrm{stat}) \pm 1.3(\mathrm{syst}) \mathrm{MeV}/c^2$. We observe the radiative decay mode $D_{sJ}^+(2457) \to D_s^+ \gamma$ and the dipion decay mode $D_{sJ}^+(2457) \to D_s^+ \pi^+ \pi^-$, and determine their branching fractions. No corresponding decays are observed for the $D_{sJ}(2317)$ state. These results are consistent with the spin-parity assignments of $0^+$ for the $D_{sJ}(2317)$ and $1^+$ for the $D_{sJ}(2457)$., Comment: 5 pages, 6 figures; Added content, updated and paper submitted to PRL
Published: 2003

48. Evidence forCP-violating asymmetries inB0→π+π−decays and constraints on the CKM angleφ2

Author: K. Abe, N. Abe, T. Abe, I. Adachi, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, C. W. Everton, J. Flanagan, C. Fukunaga, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, C. Hagner, K. Hara, N. C. Hastings, K. Hasuko, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, G. Katano, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, M. Kikuchi, E. Kikutani, D. W. Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, T. Kubo, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, S.-W. Lin, J. MacNaughton, F. Mandl, D. Marlow, S. Matsumoto, T. Matsumoto, S. Michizono, T. Mimashi, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, A. Murakami, Y. Nagasaka, T. Nakadaira, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakayama, J. W. Nam, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, Y. Ogawa, K. Ohmi, Y. Ohnishi, T. Ohshima, N. Ohuchi, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, J. Schümann, C. Schwanda, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, R. Sugahara, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, Y. Unno, S. Uno, N. Uozaki, S. E. Vahsen, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, M. Yokoyama, M. Yoshida, C. C. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, media_common.quotation_subject, High Energy Physics::Phenomenology, Monte Carlo method, Resonance (particle physics), Asymmetry, law.invention, Nuclear physics, KEKB, law, CP violation, High Energy Physics::Experiment, B meson, Collider, media_common
Abstract: We present an improved measurement of CP-violating asymmetries in B 0→π+π- decays based on a 78 fb -1 data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We reconstruct one neutral B meson as a B0→π+π - CP eigenstate and identify the flavor of the accompanying B meson from inclusive properties of its decay products. We apply an unbinned maximum likelihood fit to the distribution of the time intervals between the two B meson decay points. The fit yields the CP-violating asymmetry amplitudes A ππ= +0.77 ±0.27(stat) ±0.08(syst) and S ππ=-1.23 ±0.41(stat) -0.07 +0.08(syst), where the statistical uncertainties are determined from the Monte Carlo pseudoexperiments. We obtain confidence intervals for CP-violating asymmetry parameters Aππ and Sππ based on a frequentist approach. We rule out the CP-conserving case, A ππ=Sππ=0, at the 99.93% confidence level. We discuss how these results constrain the value of the Cabibbo-Kobayashi-Maskawa (CKM) angle φ2. © 2003 The American Physical Society.
Published: 2003

49. Measurement of Branching Fractions and Charge Asymmetries for Two-Body B Meson Decays with Charmonium

Author: Y. Kawakami, Y. Iwasaki, Y. J. Kwon, O. Schneider, H. K. Jang, J. W. Nam, D. Liventsev, T. Hojo, T. Iijima, T. Nakadaira, Frederic Jean Ronga, I. Bizjak, G. S. Varner, V.A. Sidorov, Masashi Yokoyama, Y. Ban, Masashi Hazumi, D. Žontar, Tsukasa Aso, S. Noguchi, K. Kinoshita, S. Saitoh, P. Pakhlov, G. N. Taylor, Kai-Feng Chen, T. Aushev, B. C. K. Casey, K. Rybicki, K. Senyo, S. U. Kataoka, S. Uno, R. Abe, C. Schwanda, A. Satpathy, O. Nitoh, N. Soni, E. Nakano, T. E. Browder, R. Itoh, Hiroaki Aihara, H. O. Kim, I. Adachi, N. Tamura, S. Ogawa, Gobinda Majumder, Hiroyuki Iwasaki, A. Yamaguchi, T. Tsukamoto, Meng Wang, H. Park, A. Bozek, H. Miyata, J. S. Kang, Prafulla Kumar Behera, N. C. Hastings, Semen Eidelman, T. Takahashi, A. Drutskoy, A. Ishikawa, A. Bay, H. Yanai, Y. Sakai, S. Y. Suzuki, Byung Gu Cheon, S. Kobayashi, T. Abe, T. Nozaki, F. Takasaki, P. Križan, Alexander Bondar, S. Nishida, K. Sumisawa, J. H. Kang, Rong-Shyang Lu, L. Hinz, B. Golob, H. Kichimi, T. Hokuue, Samo Korpar, M. Danilov, Shaji Kumar, W. S. Hou, Kevin Varvell, J. Dragic, C. C. Wang, Yasuhiko Yamada, Ascelin Gordon, M. Akatsu, S. Uehara, L. Y. Dong, Y. Hoshi, C. W. Park, E. Won, Y. Chao, Daniel Robert Marlow, T. Mori, Rolf Seuster, S. L. Olsen, S. K. Kim, H. Palka, L. E. Piilonen, R. Kulasiri, J. MacNaughton, Hyun Woo Kim, T. Kawasaki, R. Chistov, Y. Choi, T. Sumiyoshi, A. M. Bakich, Z. P. Zhang, P. Krokovny, J. B. Singh, T. Matsumoto, S. K. Choi, A. Sugi, I. Higuchi, T. J. Gershon, J. Haba, D. W. Kim, Y. Watanabe, T. Tsuboyama, K. Inami, Hyunyong Kim, G. Leder, Y. Onuki, F. Mandl, K. Tamai, S. Matsumoto, M. Satapathy, Kazuo Abe, Y. Asano, P. Kapusta, S. Okuno, Chikara Fukunaga, Y. Teramoto, Bruce Yabsley, T. Okabe, H. Shibuya, J. Tanaka, V. Eiges, Y. Yamashita, H. Ozaki, S. Schrenk, T. Nagamine, H. C. Huang, S. Semenov, W. A. Mitaroff, J. G. Wang, W. Ostrowicz, M. D. Peters, P. Chang, K. Miyabayashi, C. H. Wang, S. H. Lee, Jolanta Brodzicka, M. Starič, M. H. Tanaka, Hiroyuki Sagawa, T. Tomura, H. Nakazawa, J. Li, N. Katayama, A. Garmash, H. Kawai, Z. Natkaniec, T. Ohshima, N. Gabyshev, You-Jin Yuan, M. Bračko, and Samo Stanič
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Branching fraction, Hadron, High Energy Physics::Phenomenology, FOS: Physical sciences, Quarkonium, J/psi meson, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), KEKB, CP violation, B meson, High Energy Physics::Experiment
Abstract: We report branching fractions and charge asymmetries for exclusive decays of charged and neutral B mesons to two-body final states containing a charmonium meson, J/psi or psi(2S). This result is based on a 29.4 fb^{-1} data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e+e- collider., 13 pages, 5 figures, revtex
Published: 2002

50. Observation of Doublecc¯Production ine+e−Annihilation ats≈10.6 GeV

Author: J. Kaneko, S. E. Vahsen, K. Sumisawa, K. Hoshina, S. K. Swain, T. Hokuue, Ascelin Gordon, H. J. Kim, H. Ozaki, A. Bondar, L. Y. Dong, K. Neichi, J. P. Perroud, F. Ohno, E. Won, Jolanta Brodzicka, M. D. Peters, Zhenyu Zhang, O. Nitoh, S. Stanič, Ho Kim, L. S. Peak, N. Kawamura, S. H. Lee, T. J. Gershon, T. Igaki, Chikara Fukunaga, T. Ohshima, Masashi Hazumi, J. W. Nam, M. H. Tanaka, Heejong Kim, T. Mori, N. C. Hastings, Byoung Sup Ahn, M. Starič, D. Liventsev, T. Aushev, Hiroyuki Sagawa, T. Hojo, J. S. Kang, S. Uno, C. Schwanda, Hiroaki Aihara, B. C. K. Casey, T. Tomura, G. S. Varner, S. R. Hou, T. Takahashi, O. Schneider, T. Iijima, S. Nishida, V.N. Zhilich, R. Itoh, Ju Hwan Kang, Y. Unno, T. Matsumoto, C. W. Park, N. Katayama, S. Semenov, Y. Choi, J. Li, C. C. Wang, Seong Keun Kim, E. Nakano, V.A. Sidorov, Y. Kawakami, S.I. Eidelman, Tsukasa Aso, Rolf Seuster, S. K. Choi, V.M. Aulchenko, Y. Yusa, P. Krokovny, Rong-Shyang Lu, M. Akatsu, Y. Iwasaki, I. Adachi, Y. Igarashi, M. Iwamoto, T. E. Browder, W. S. Hou, Y. J. Kwon, S. Suzuki, Yong Ban, K. Kinoshita, M. Yamauchi, H. Miyata, Prafulla Kumar Behera, H. K. Jang, N. Tamura, R. Abe, A. Yamaguchi, R. Guo, Jasvinder A. Singh, Gobinda Majumder, Hiroyuki Iwasaki, Y. Hoshi, K. Inami, D. W. Kim, M. Danilov, Z. Natkaniec, T. Tsukamoto, Hyunwoo Kim, S. Tokuda, Y. Sakai, Y. Teramoto, K. S. Park, H. Miyake, T.H. Kim, S. Noguchi, F. Handa, P. Pakhlov, A. Satpathy, Byung Gu Cheon, S. L. Olsen, J. Yashima, J. Dragic, A. Bozek, A.S. Kuzmin, N. Gabyshev, Yasuhiko Yamada, G. R. Moloney, H. Hayashii, You-Jin Yuan, A. Drutskoy, A. Sugi, S. Ogawa, M. Z. Wang, S. Saitoh, H. Palka, L. E. Piilonen, A. Sugiyama, H. Yanai, G. N. Taylor, J. S. Lange, R. Kulasiri, Sadaharu Uehara, T. Kawasaki, A. M. Bakich, R. Chistov, T. Sumiyoshi, A. Ishikawa, A. Bay, J. MacNaughton, T. Nozaki, F. Takasaki, W. Trischuk, A. Garmash, H. K. Park, Y. Harada, H. Kawai, Y. Onuki, Y. Yamashita, Suneel Kumar, K. Senyo, S. N. Tovey, Yasushi Nagasaka, M. Bračko, D. Žontar, E. M. Heenan, Kei Suzuki, Kevin Varvell, G. Leder, T. Nagamine, H. C. Huang, F. Mandl, K. Tamai, M. E. Sevior, S. Matsumoto, M. Satapathy, K. Ueno, W. Bartel, Y. Watanabe, Yuji Enari, H. Kichimi, T. Tsuboyama, I. Higuchi, M. Nakao, H. Shibuya, V. Eiges, Y. Chao, S. Schrenk, W. Ostrowicz, J. G. Wang, N.I. Root, P. Chang, C. H. Wang, Kazuo Abe, B. D. Yabsley, T. Hara, Y. Asano, P. Kapusta, S. Okuno, T. Abe, Takuya Higuchi, Elzbieta Banas, and T. Okabe
Subjects: Physics, Crystallography, Particle physics, KEKB, Annihilation, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, General Physics and Astronomy, High Energy Physics::Experiment, Production (computer science), Continuum (set theory), Open charm
Abstract: We report the observation of prompt $J/\ensuremath{\psi}$ via double $c\overline{c}$ production from the ${e}^{+}{e}^{\ensuremath{-}}$ continuum. In this process one $c\overline{c}$ pair fragments into a $J/\ensuremath{\psi}$ meson while the remaining pair either produces a charmonium state or fragments into open charm. Both cases have been experimentally observed. We find cross sections of $\ensuremath{\sigma}[{e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}{\ensuremath{\eta}}_{c}(\ensuremath{\gamma})]\ifmmode\times\else\texttimes\fi{}\mathcal{B}({\ensuremath{\eta}}_{c}\ensuremath{\rightarrow}\ensuremath{\ge}4\text{ }\text{ }\mathrm{\text{charged}})=({0.033}_{\ensuremath{-}0.006}^{+0.007}\ifmmode\pm\else\textpm\fi{}0.009)\text{ }\text{ }\mathrm{p}\mathrm{b}$ and $\ensuremath{\sigma}({e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}{D}^{*+}X)=({0.53}_{\ensuremath{-}0.15}^{+0.19}\ifmmode\pm\else\textpm\fi{}0.14)\text{ }\text{ }\mathrm{p}\mathrm{b}$ and infer $\ensuremath{\sigma}({e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}c\overline{c})/\ensuremath{\sigma}({e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}J/\ensuremath{\psi}X)={0.59}_{\ensuremath{-}0.13}^{+0.15}\ifmmode\pm\else\textpm\fi{}0.12$. These results are obtained from a $46.2\text{ }\text{ }{\mathrm{f}\mathrm{b}}^{\ensuremath{-}1}$ data sample collected near the $\ensuremath{\Upsilon}(4S)$ resonance, with the Belle detector at the KEKB collider.
Published: 2002

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