Author: "N Kawamura" - Searchworks@Jio Institute Digital Library Search Results

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101. Effects of Cu addition on Bi-substituted garnet film for magneto-optical recording

Author: Kenji Shimokawa, S. Takebayashi, N. Kawamura, and T. Tamaki
Subjects: Materials science, business.industry, Optoelectronics, Electrical and Electronic Engineering, Condensed Matter Physics, business, Instrumentation, Electronic, Optical and Magnetic Materials, Magneto optical
Published: 1991

102. High Velocity Flow with Free Boundary in Open Channels

Author: N. Kawamura, N. Yoneyama, Y. Iwasa, and T. Hosoda
Subjects: Steady state, Method of characteristics, Flow (mathematics), Plane (geometry), Numerical analysis, Organic Chemistry, Mathematical analysis, Boundary (topology), Geometry, Boundary layer thickness, Biochemistry, Intersection (Euclidean geometry), Mathematics
Abstract: The method of calculation of high velocity flow with free boundary is developed by means of the method of characteristics. The basic equations used here are the plane two-dimensional flow equations in the steady state. These equations are transformed into the characteristic form. It is shown that the position of free boundary is determined as the intersection of stream line (λ1-line) and another characteristic line λ2 or λ3. The hydraulic variables along the free boundary are also calculated by using the relation satisfied along λ1- and λ2-line or λ1- and λ3-line. The numerical method shown here is applied for some typical high velocity flows with free boundaries studied by Rouse and Knapp. The calculated results are compared with the previous experimental results in order to verify the method of calculation.
Published: 1991

103. [Untitled]

Author: S. Sakamoto, H. Sugai, Masakazu Tanase, M. Iwasaki, Katsuhisa Kudo, T. Hashimoto, N. Kawamura, G. H. Eaton, Kiyoyuki Kurosawa, M. Kato, Kanetada Nagamine, Kunio Ishida, Teiichiro Matsuzaki, Satoshi Nakamura, and N. Takeda
Subjects: Nuclear physics, Muon-catalyzed fusion, Muon, chemistry, Physics::Instrumentation and Detectors, Physics::Accelerator Physics, chemistry.chemical_element, Neutron detection, High Energy Physics::Experiment, Tritium, Helium
Abstract: This article reports the accumulation effect of the 3He originating from tritium β decay; 3He created in solid remains in it, while one in liquid diffuses and goes out to the vapor gas. We observed this effect through the neutron detection from muon catalyzed fusion phenomenon (μCF), and gave it qualitative understanding, by which the muon transfer rate from (dμ) and (tμ) to helium was derived.
Published: 1999

104. Design of the Large Acceptance Muon Beamline at J-PARC

Author: K. Nakahara, Y. Miyake, K. Shimomura, P. Strasser, K. Nishiyama, N. Kawamura, H. Fujimori, S. Makimura, A. Koda, K. Nagamine, T. Ogitsu, A. Yamamoto, T. Adachi, K. Sasaki, K. Tanaka, N. Kimura, Y. Makida, Y. Ajima, K. Ishida, Y. Matsuda, Osamu Yasuda, Naba Mondal, and Chihiro Ohmori
Subjects: Physics, Particle physics, Muon-catalyzed fusion, Muon, Physics::Instrumentation and Detectors, Particle accelerator, Superconducting magnet, law.invention, Nuclear physics, Beamline, law, Physics::Accelerator Physics, High Energy Physics::Experiment, J-PARC, Beam (structure)
Abstract: The Materials and Life Science Facility (MLF) is currently under construction at J‐PARC in Tokai, Japan. The muon section of the facility will house the muon production target and four secondary beamlines used to transport the muons into two experimental halls. One of the beamlines is a large acceptance beamline (the so called Super Omega Muon beamline) which, when completed, will produce the largest intensity pulse muon beam in the world. The expected rate of surface muons for this beamline is 5×108 μ+/s, and a cloud muon rate of 107 μ−/s. The extracted muons will be used for projects involving the production of ultra‐slow muons as well as for muon‐catalyzed fusion. The beamline consists of the normal‐conducting capture solenoids, the superconducting curved transport solenoids, and the Dai Omega‐type axial focusing magnet. Currently, the capture and transport solenoids are under design, with the former in its final stages and the latter being finalized for construction of test coils. The design of the Da...
Published: 2008

105. Status of Decay∕Surface Muon Channel for the Muon Science in J-PARC

Author: K. Shimomura, Y. Miyake, P. Strasser, A. Koda, N. Kawamura, S. Makimura, H. Fujimori, K. Nakahara, R. Kadono, K. Ishida, J. Doornbos, W. Higemoto, K. Nishiyama, K. Nagamine, Osamu Yasuda, Naba Mondal, and Chihiro Ohmori
Subjects: Nuclear physics, Physics, Particle decay, Particle physics, Muon, Physics::Instrumentation and Detectors, Muon collider, Physics::Accelerator Physics, High Energy Physics::Experiment, J-PARC, Muon spin spectroscopy, Linear particle accelerator, Communication channel
Abstract: Muon Science laboratory at Material Life Science Facility is now under construction in J‐PARC, where, four types of muon channels are planed to install. Present status of the superconducting and surface muon channel is briefly reported.
Published: 2008

106. Is the egg size determining gene, Esd, on the W chromosome identical with the sex-linked giant egg gene, Ge, in the silkworm?

Author: N. Kawamura
Subjects: Genetics, biology, fungi, Mutant, Chromosomal translocation, Plant Science, General Medicine, biology.organism_classification, Molecular biology, Bivalent (genetics), W chromosome, Bombycidae, Gene mapping, Insect Science, Animal Science and Zoology, Gene, Sex linkage
Abstract: The presence of the egg size-determining (Esd) gene, which acts as a quantitative gene, on the W chromosome of the silkworm was revealed in a previous study by using two types of triploid females, ZZW and ZWW, (Kawamura, Genetica 76: 195–201). The females with the sex-linked giant egg (Ge) gene deposit eggs as large as those laid by tetraploids. If the Ge mutant is induced by translocation of a fragment of the W carrying Esd onto the Z by chance, the egg size increase in the Ge strain and in tetraploids may be easily explained by the double dose of Esd. The measurement of the length of the Z-W bivalent in oocytes showed that the Z of the Ge strain was much longer than that of the other strains which do not carry the Ge gene. The result suggests that the Ge gene is identical with the Esd on the W chromosome of the silkworm.
Published: 1990

107. Pressure-induced valence crossover and novel metamagnetic behavior near the antiferromagnetic quantum phase transition of YbNi3Ga9

Author: K, Matsubayashi, T, Hirayama, T, Yamashita, S, Ohara, N, Kawamura, M, Mizumaki, N, Ishimatsu, S, Watanabe, K, Kitagawa, and Y, Uwatoko
Abstract: We report electrical resistivity, ac magnetic susceptibility, and x-ray absorption spectroscopy measurements of intermediate valence YbNi_{3}Ga_{9} under pressure and magnetic field. We have revealed a characteristic pressure-induced Yb valence crossover within the temperature-pressure phase diagram, and a first-order metamagnetic transition is found below P_{c}∼9 GPa where the system undergoes a pressure-induced antiferromagnetic transition. As a possible origin of the metamagnetic behavior, a critical valence fluctuation emerging near the critical point of the first-order valence transition is discussed on the basis of the temperature-field-pressure phase diagram.
Published: 2015

108. Image Query by Multiresolution Spectral Histograms

Author: M. Yoshimura, N. Kawamura, and Shigeo Abe
Subjects: Computer science, business.industry, Multiresolution analysis, Feature extraction, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, InformationSystems_DATABASEMANAGEMENT, Pattern recognition, Image (mathematics), Automatic image annotation, Image texture, Computer Science::Computer Vision and Pattern Recognition, Histogram, Metric (mathematics), Computer vision, Artificial intelligence, business, Image resolution, Computer Science::Databases
Abstract: We propose a method for searching a database for similar images guided by the image submitted by users as a query. We make use of texture features of images for the retrieval. To extract texture features, we apply complex multiresolution analysis to a query and database images and generate multiresolution spectral histograms from the coefficients of each subband image. We define an image query metric by inquiring the degree of analogy among the spectral histograms of a query and database images. The proposed method shows the improvement of the accuracy of query results against the conventional multiresolution method. Testing on the databases of 1800/2400 images, we obtain the good matches in 3.4/3.5 seconds
Published: 2006

109. Evaluation of Drop Impact Load for Portable Electronic Components

Author: H. Inoue, Takahiro Omori, Minoru Mukai, N. Kawamura, Kikuo Kishimoto, and Takashi Kawakami
Subjects: Materials science, business.industry, Moving load, Structural engineering, Deformation (meteorology), Collision, Finite element method, Rod, Drop impact, visual_art, Electronic component, visual_art.visual_art_medium, business, Slipping
Abstract: A method to predict impact load caused by the collision of two rods is investigated in this paper. To obtain normal impact load, Hertzian law is applied to express the contact compliance. Frictional force and deformation of two bodies are also taken into account. Some drop impact tests and simulations are performed with several heights and positions to verify the modeling. The results of comparing analysis with experiment show that frictional force and deformation of two rods greatly affect the impact load. It is noted that the finite element method can also predict the impact load and that slipping and sticking between two rods during impact are likely to affect the impact load.
Published: 2006

110. Chalcopyrite Thin-Film Tandem Solar Cells with 1.5 V Open-Circuit-Voltage

Author: Hiroki Ishizaki, N. Kawamura, Y. Ishii, R. Arai, S. Kijima, Naoomi Yamada, Tokio Nakada, and Y. Kuromiya
Subjects: Semiconductor thin films, Materials science, Tandem, Ternary semiconductors, Open-circuit voltage, business.industry, Chalcopyrite, Copper indium gallium selenide solar cells, visual_art, visual_art.visual_art_medium, Optoelectronics, Thin film, business, Short circuit
Abstract: We have fabricated two-terminal mechanical stacked chalcopyrite-based tandem devices to identify the technical issues required to achieve high performance solar cells in the near future. A tandem device with a Ag(In0.2Ga0.8)Se2 (AIGS) top cell and a Cu(In,Ga)Se2 (CIGS) bottom cell showed an open-circuit-voltage (Voc) of 1.46 V. It was, however, found that the short-circuit current (Jsc) of a two-terminal tandem device was limited by the low Jsc of the filtered bottom cell because of a current mismatch between the top and bottom cells. In order to improve the Jsc of the filtered bottom cell, we have tried two process options, replacing ITO back contacts with high-mobility (Mo-doped In2O3) IMO and the use of low-Ga content CIGS bottom cells. The Jsc of the filtered bottom cells increased significantly using these techniques. As a result, an 8 % total-area (0.5cm2) efficiency 2-terminal mechanical stacked tandem device was achieved using a CIGS (15% Ga) bottom cell with an AIGS top cell fabricated with an IMO back contact.
Published: 2006

111. Small warpage dielectrically isolated wafer for power ICs by silicon wafer direct-bonding

Author: K. Tanzawa, K. Furukawa, Akio C O Patent Divis Nakagawa, and N. Kawamura
Subjects: Die preparation, Materials science, business.industry, Wafer bonding, Optoelectronics, Wafer dicing, Wafer, Direct bonding, business, Wafer backgrinding, Die (integrated circuit), Embedded Wafer Level Ball Grid Array
Published: 2005

112. Admixture of excited states and ground states of aEu3+ion inEu3Fe5O12by means of magnetic circular dichroism

Author: Masaichiro Mizumaki, Takayuki Uozumi, Akane Agui, Makoto Nakazawa, and N. Kawamura
Subjects: Physics, X-ray absorption spectroscopy, Degree (graph theory), X-ray magnetic circular dichroism, Magnetic moment, Absorption spectroscopy, Magnetic circular dichroism, Excited state, Order (ring theory), Atomic physics, Condensed Matter Physics, Electronic, Optical and Magnetic Materials
Abstract: The soft x-ray absorption spectroscopy (XAS) and magnetic circular dichroism (MCD) have been measured around the ${M}_{4,5}$ edges at $T=20$ and 300 K in order to investigate the electronic states of ${\mathrm{Eu}}^{3+}$ ions in ${\mathrm{Eu}}_{3}{\mathrm{Fe}}_{5}{\mathrm{O}}_{12}$. We found a structure in both the XAS and MCD spectra, which was not observed at $T=20\phantom{\rule{0.3em}{0ex}}\mathrm{K}$, on the lower energy side of the ${M}_{5}$ edge at room temperature. By using atomic model calculations, the origin of the structure is assumed to be due to the thermal effect for the degree of admixture of the excited states ($J=1$, 2) and ground states $(J=0)$ of ${\mathrm{Eu}}^{3+}$. Developing the linear response model to investigate the magnetic moment obtained from the experimental spectra, we conclude that the thermal excited states of ${\mathrm{Eu}}^{3+}$ ions is the linear combination between $J=0$, 1, and 2 and the magnetic-field-excited state is the quantum-mechanically mixed state of the ground and excited states.
Published: 2005

113. Evidence for DirectCPViolation inB0→K+π−Decays

Author: Y. Chao, P. Chang, K. Abe, N. Abe, I. Adachi, H. Aihara, K. Akai, M. Akatsu, M. Akemoto, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, T. Aziz, S. Bahinipati, A. M. Bakich, Y. Ban, M. Barbero, A. Bay, I. Bedny, U. Bitenc, I. Bizjak, S. Blyth, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, M.-C. Chang, 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, M. Danilov, M. Dash, L. Y. Dong, R. Dowd, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, D. Epifanov, C. W. Everton, F. Fang, J. Flanagan, S. Fratina, H. Fujii, Y. Funakoshi, K. Furukawa, N. Gabyshev, A. Garmash, T. Gershon, A. Go, G. Gokhroo, B. Golob, M. Grosse Perdekamp, H. Guler, R. Guo, J. Haba, C. Hagner, F. Handa, K. Hara, T. Hara, N. C. Hastings, K. Hasuko, K. Hayasaka, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S. Hou, W.-S. Hou, Y. B. Hsiung, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, H. Ikeda, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, K. Itoh, R. Itoh, M. Iwamoto, M. Iwasaki, Y. Iwasaki, R. Kagan, H. Kakuno, T. Kamitani, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, N. Kent, H. R. Khan, A. Kibayashi, H. Kichimi, M. Kikuchi, E. Kikutani, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, T. H. Kim, K. Kinoshita, S. Kobayashi, H. Koiso, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, T. Kubo, R. Kulasiri, S. Kumar, C. C. Kuo, H. Kurashiro, E. Kurihara, A. Kusaka, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. E. Lee, S. H. Lee, Y.-J. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, M. Masuzawa, T. Matsuishi, H. Matsumoto, S. Matsumoto, T. Matsumoto, A. Matyja, S. Michizono, Y. Mikami, T. Mimashi, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, G. R. Moloney, G. F. Moorhead, T. Mori, J. Mueller, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, I. Nakamura, T. T. Nakamura, E. Nakano, M. Nakao, H. Nakayama, H. Nakazawa, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, A. Ogawa, S. Ogawa, Y. Ogawa, K. Ohmi, Y. Ohnishi, T. Ohshima, N. Ohuchi, K. Oide, 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, N. Parslow, L. S. Peak, M. Pernicka, J.-P. Perroud, M. Peters, L. E. Piilonen, A. Poluektov, F. J. Ronga, N. Root, M. Rozanska, H. Sagawa, M. Saigo, S. Saitoh, Y. Sakai, H. Sakamoto, H. Sakaue, T. R. Sarangi, M. Satapathy, N. Sato, T. Schietinger, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, T. Seki, S. Semenov, K. Senyo, Y. Settai, R. Seuster, M. E. Sevior, T. Shibata, H. Shibuya, T. Shidara, B. Shwartz, V. Sidorov, V. Siegle, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, R. Sugahara, A. Sugi, T. Sugimura, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, S. K. Swain, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, K. Tanabe, M. Tanaka, M. Tawada, G. N. Taylor, Y. Teramoto, X. C. Tian, S. Tokuda, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, K. Uchida, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, L. Widhalm, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, H. Yamamoto, N. Yamamoto, S. Yamamoto, T. Yamanaka, Y. Yamashita, M. Yamauchi, Heyoung Yang, P. Yeh, J. Ying, K. Yoshida, M. Yoshida, Y. Yuan, Y. Yusa, H. Yuta, S. L. Zang, C. C. Zhang, J. Zhang, L. M. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, T. Ziegler, D. Žontar, and D. Zürcher
Subjects: Physics, Nuclear physics, Particle physics, KEKB, law, Electron–positron annihilation, General Physics and Astronomy, CP violation, Collider, Mixing (physics), Charged particle, law.invention
Abstract: The evidence for direct charged particles (CP) violation in the decay B0→K+ π- was investigated with 253 fb-1 of data collected with the Belle detector at the KEKB e + e- collider. 275 x 106 BB pairs were used to observe a B→K±π∓ signal with 2140 ±53 events. Mixing induced CP violation in the B sector was established in b → ccs transitions. The result suggests large interference between tree and penguin diagrams and the existence of final state interactions.
Published: 2004

114. Telecytology in Hokkaido Island, Japan: results of primary telecytodiagnosis of routine cases

Author: K. Dota, F. Wakao, N. Kawamura, H. Suzuki, S. Matsubayashi, K. Yamashiro, H. Mizushima, and N. Azumi
Subjects: medicine.medical_specialty, Telemedicine, Internet, Histology, business.industry, Clinical Laboratory Techniques, Concordance, Cytodiagnosis, General Medicine, Pathology and Forensic Medicine, Surgery, Uterine cervix, Static image, Japan, Computer Systems, Glass slide, medicine, Telecommunications, Humans, Medical physics, Mailing list, Medical diagnosis, Telepathology, business
Abstract: In 1997, an Internet-based static image telepathology system was built at Sapporo National Hospital, Japan. We can exchange high-resolution microscopical images through a file transfer protocol server and discuss cytological findings and diagnosis on an electronic mailing list. We applied the system to primary telecytodiagnosis. From May 1997 to April 1999 we have made diagnoses of 614 daily cases only by looking at the video monitor images transmitted from the cytotechnologist of Wakkanai Municipal Hospital 300 km distant from Sapporo. The concordance between telecytodiagnosis and glass slide diagnosis was 88.6%. Kappa statistics for cervical smears was 0.919 and that for specimens other than uterine cervix was 0.810. The accuracy of telecytodiagnosis was 91.4%, and was not substantially different from that of the conventional mail-based cytology in a previous year. We had five cases with a severely inappropriate diagnosis in telecytology, all of which however were quickly corrected by follow-up histological or cytological specimens. With the use of an electronic mailing list the participants had quick and sufficient discussions. We conclude that telecytology is very useful for primary cytodiagnosis in regional medicine and that it may raise the accuracy of cytodiagnosis in future, if we make consistent efforts to reflect the benefits of telecytology in daily practices. This is the first report of clinical results of telecytology from Japan.
Published: 2004

115. Operation support for the location-aware exhibit information service system using Bluetooth communication

Author: A. Hiramatsu, N. Kawamura, Yohei Takada, and Norihisa Komoda
Subjects: Service system, Multimedia, business.industry, Computer science, computer.software_genre, law.invention, Bluetooth, law, Information system, Bluesnarfing, business, Mobile device, computer, Graphical user interface, Computer network
Abstract: We have developed a location-aware information service system using Bluetooth in an exhibition hall like a gallery and a museum. With this system, the visitors who have their mobile devices such as a cellular phone of PDA can automatically get the information about the exhibits nearby them, based on the estimated visitors' locations. In this paper, we propose several operation support features for smoothly maintaining contents information and the Bluetooth communication area setup. The proposed operation support was evaluated with time to input. With the support, the operator took 183 min for data input and it was one-third of input time without the support system.
Published: 2004

116. Influence of magnetocrystalline anisotropy on rare-earthL2,3-edge x-ray magnetic circular dichroism spectra

Author: Hiroshi Maruyama, N. Kawamura, Motohiro Suzuki, and Jesús Chaboy
Subjects: Physics, Condensed Matter::Materials Science, X-ray magnetic circular dichroism, Condensed matter physics, Magnetic circular dichroism, Intermetallic, Absorption (logic), Edge (geometry), Condensed Matter Physics, Magnetocrystalline anisotropy, Anisotropy, Spectral line, Electronic, Optical and Magnetic Materials
Abstract: We present an x-ray magnetic circular dichroism (XMCD) study performed at the Sm and Er ${L}_{2,3}$-edges for the ${R}_{2}{\mathrm{Fe}}_{17}$ compounds $(R=\mathrm{rare}$ earth) and their ${R}_{2}{\mathrm{Fe}}_{17}{\mathrm{H}}_{x}$ and ${R}_{2}{\mathrm{Fe}}_{17}{\mathrm{N}}_{x}$ derivatives. The modification of the magnetocrystalline anisotropy by interstitial nitrogen atoms affects the shape of the XMCD signals recorded at both Sm and Er ${L}_{3}$ edge. On the other hand, while the change from planar to uniaxial anisotropy does not modify the Sm ${L}_{2}$-edge XMCD signal, the sign of the Er ${L}_{2}$-edge XMCD spectrum is reversed. These results are discussed in terms of the effect of the magnetocrystalline anisotropy on the XMCD spectra at rare-earth ${L}_{2,3}$ absorption edges of R-Fe intermetallic systems.
Published: 2004

117. Evidence forB0→π0π0

Author: J. Tanaka, Osamu Tajima, Gobinda Majumder, Hiroyuki Iwasaki, H. Ozaki, K. Neichi, T. Tsukamoto, M. D. Peters, O. Nitoh, S. H. Lee, T. Igaki, Hiroshi Sakamoto, Hiroaki Aihara, Y. Yamashita, S. Schrenk, K. Korotushenko, A. Tchouvikov, Rong-Shyang Lu, G. R. Moloney, T. Nagamine, H. C. Huang, M. Grosse Perdekamp, N. Tamura, K. Hoshina, S. Noguchi, Y. Ushiroda, M. H. Tanaka, M. Shimoyama, S. Uno, S. E. Vahsen, C. Schwanda, N.I. Root, Y. Miyabayashi, Hiroyuki Sagawa, J. Kaneko, H. Yamamoto, Y. Kawakami, R. Guo, M. C. Chang, S. Nishida, Ascelin Gordon, S. U. Kataoka, A. Sugi, H. Fujii, J. P. Perroud, K. Hasuko, T. Iijima, Y. Onuki, L. Y. Dong, H. Kakuno, Hikaru Kawai, T. Nakadaira, E. Kurihara, Akito Kusaka, M. Kataoka, F. Ohno, C. W. Park, E. Won, P. Chang, Hyun Woo Kim, Jie Zhang, Masashi Yokoyama, E. Nakano, V.A. Sidorov, V. M. Aulchenko, Y. Ban, Jung-Hyun Kim, Y. Yusa, Daniel Robert Marlow, G. F. Moorhead, K. Trabelsi, H. K. Jang, P. Krokovny, T. Tomura, K. Senyo, Patrick Koppenburg, K. Inami, D. Mohapatra, Kyo Yoshida, J. B. Singh, Masashi Hazumi, S. K. Choi, K. Ueno, T. Kawasaki, D. Zurcher, Y. Iwasaki, V. Siegle, Y. J. Kwon, T. Sumiyoshi, H. O. Kim, R. Kagan, A. Yamaguchi, Tapas Sarangi, Frederic Jean Ronga, Takahiko Matsubara, D. Epifanov, Shaji Kumar, S. Tokuda, Kevin Varvell, Y. Chao, F. Handa, H. Miyake, S. Eidelman, Y. Settai, I. Bedny, J. Li, S. W. Lin, J. Yashima, N. Parslow, M. Iwamoto, B. Shwartz, Chikara Fukunaga, Seema Bahinipati, J. W. Nam, T. J. Gershon, P. Krizan, P. Pakhlov, D. Liventsev, O. Schneider, Z.M. Zhu, Yasuhiko Yamada, K. S. Park, Y. Choi, M. Yamauchi, T. Hojo, J. G. Wang, A. Satpathy, A. Matyja, Ilija Bizjak, T. Hara, H. Hayashii, N. Abe, Hyunyong Kim, R. Abe, M. Rozanska, H. Guler, M. Iwasaki, A.E. Bondar, H. Palka, T. Uglov, H. Sakaue, L. E. Piilonen, S. L. Olsen, G. S. Varner, B. G. Cheon, A. Ishikawa, T. Aushev, W. S. Hou, N. Soni, R. Kulasiri, A. Bay, Kazuo Abe, M. Z. Wang, K. Kinoshita, S. Saitoh, H. Yanai, Y. Asano, P. Kapusta, N. Kawamura, S. Okuno, S. K. Kim, J. Dragic, R. Itoh, Y. Mikami, E. M. Heenan, T. Mori, Makoto Tomoto, H. Park, A. Ogawa, A. Bozek, F. Fang, Tsukasa Aso, S. K. Swain, Heejong Kim, G. N. Taylor, T. Abe, R. Dowd, J. S. Kang, J. Haba, Takuya Higuchi, Antonio Limosani, S. Narita, T. Nozaki, M. Starič, Kei Suzuki, James Mueller, A. Drutskoy, Y. Teramoto, Bruce Yabsley, F. Takasaki, S. Korpar, R. Chistov, S. Y. Suzuki, Jolanta Brodzicka, Elzbieta Banas, T. Okabe, S. Banerjee, S. Kobayashi, L. Widhalm, T. E. Browder, Yuji Enari, A. Kibayashi, M. Dash, L. S. Peak, Y. Unno, K. Sumisawa, Y. Igarashi, M. Asai, L.C. Moffitt, K. Takahashi, B. Golob, K. Tanabe, K. Uchida, K. F. Chen, Y. Zheng, J. S. Lange, L. Hinz, Heyoung Yang, N. Uozaki, J. MacNaughton, M. Danilov, Byoung Sup Ahn, P. Yeh, A. Garmash, Hirokazu Ishino, T. Hokuue, K. Hara, C. C. Wang, Z. P. Zhang, B. Takeshita, A. Kuzmin, N. Katayama, Rolf Seuster, T. Matsumoto, M. Pernicka, T. Seki, Yasushi Nagasaka, S. Ogawa, I. Adachi, H. Yuta, H. Nakazawa, G. Gokhroo, M. Akatsu, A. J. Schwartz, E.A. Dodson, C.W. Everton, D. Zontar, V.N. Zhilich, S. Semenov, W. A. Mitaroff, I. Higuchi, Y. Tamai, Young-Il Choi, K. Miyabayashi, Y. B. Hsiung, Hideyuki Kawai, H. Matsumoto, T. A. Shibata, H. Miyata, M. Nakao, Prafulla Kumar Behera, N. C. Hastings, Y. Hoshi, Y. Sakai, J. Schümann, T.H. Kim, D. W. Kim, N. Kent, Y. Watanabe, J. H. Kang, H. Kichimi, Caren Hagner, T. Tsuboyama, T. Lesiak, A. Sugiyama, T. Matsuishi, G. Leder, F. Mandl, K. Tamai, M. E. Sevior, S. Matsumoto, M. Satapathy, A. Murakami, T. Ziegler, Y. Harada, M. Bračko, Sadaharu Uehara, T. Yamanaka, Samo Stanič, Shigeki Mori, A. M. Bakich, Z. Natkaniec, T. Ohshima, S.N. Tovey, Koya Abe, N. Gabyshev, You-Jin Yuan, W. Ostrowicz, C. H. Wang, C. C. Zhang, H. Shibuya, M. Watanabe, and V. Eiges
Subjects: Physics, Particle physics, KEKB, Branching fraction, Electron–positron annihilation, Pi, General Physics and Astronomy, Resonance
Abstract: We report evidence for the decay $B^0 \to \pi^0 \pi^0$. The analysis is based on a data sample of 152 million $B\bar{B}$ pairs collected at the $\Upsilon(4s)$ resonance with the Belle detector at the KEKB $e^+ e^-$ storage ring. We find $25.6^{+ 9.3}_{-8.4}(stat)^{+1.6}_{-1.4}(syst)$ $B^0 \to \pi^0 \pi^0$ signal events with a significance of 3.4 standard deviations. We measure the branching fraction to be ($1.7 \pm 0.6 (stat) \pm 0.2 (syst))*10^{-6}$.
Published: 2003

118. Evidence forB→ϕϕK

Author: H.-C. Huang, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, F. Handa, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, J. H. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, Y.-J. Kwon, G. Leder, S. H. Lee, T. Lesiak, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, H. Matsumoto, T. Matsumoto, W. Mitaroff, H. Miyata, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, K. S. Park, N. Parslow, J.-P. Perroud, M. Peters, L. E. Piilonen, M. Rozanska, H. Sagawa, S. Saitoh, Y. Sakai, T. R. Sarangi, A. Satpathy, O. Schneider, J. Schümann, C. Schwanda, A. J. Schwartz, T. Seki, S. Semenov, M. E. Sevior, T. Shibata, H. Shibuya, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, S. Uno, 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, Heyoung Yang, Y. Yusa, C. C. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: General Physics and Astronomy
Published: 2003

119. Observation ofB∓→ρ∓ρ0Decays

Author: S. K. Swain, A. Bondar, S. Korpar, V.N. Zhilich, Hiroyuki Sagawa, D. Mohapatra, S. Semenov, W. A. Mitaroff, O. Nitoh, J. B. Singh, S. K. Choi, Ascelin Gordon, Young-Il Choi, L. Y. Dong, S. U. Kataoka, B. C. K. Casey, M. Starič, E. Won, T. J. Gershon, Daniel Robert Marlow, T. Tomura, K. Miyabayashi, M. Tanaka, Patrick Koppenburg, Hyunwoo Kim, T. Shibata, T. Nakadaira, P. Chang, Y. Iwasaki, Y. J. Kwon, Jung-Hyun Kim, H. J. Kim, J. W. Nam, N. Tamura, J. Li, S. Nishida, J. H. Kang, D. Liventsev, T. E. Browder, J. P. Perroud, T. Nozaki, Kazuo Abe, B. D. Yabsley, I. Bizjak, G. S. Varner, Y. Asano, S. Okuno, A. Garmash, T. Abe, W. S. Hou, D. Žontar, M. Danilov, P. Krokovny, R. Itoh, G. Leder, H. K. Jang, Tsukasa Aso, H. Ozaki, Chikara Fukunaga, N. Kawamura, Y. Teramoto, H. Kawai, Heyoung Yang, K. Trabelsi, F. Mandl, T. Mori, K. Tamai, Elzbieta Banas, T. Okabe, M. E. Sevior, T. Hokuue, A. J. Schwartz, Y. Zheng, S. H. Lee, Y. Chao, Shaji Kumar, S. Y. Suzuki, S. Uehara, Yasushi Nagasaka, T. Aushev, J. Zhang, N. Katayama, V. M. Aulchenko, K. Sumisawa, J. G. Wang, O. Schneider, S. Eidelman, D. W. Kim, S. Bahinipati, Rolf Seuster, Antonio Limosani, L. Hinz, A. Satpathy, K. Senyo, K. S. Park, Y. Watanabe, Yuji Enari, T. Kawasaki, D. Zurcher, I. Adachi, T. Tsuboyama, Y. B. Hsiung, H. Park, A. Bozek, Y. Ban, T. Lesiak, S. L. Olsen, H. Matsumoto, Y. Igarashi, Motoki Iwasaki, R. Guo, A. Kuzmin, A. Drutskoy, S. Ogawa, Masashi Hazumi, T. R. Sarangi, C. C. Wang, J. Dragic, M. Akatsu, Yasuhiko Yamada, Gobinda Majumder, Hiroyuki Iwasaki, J. S. Kang, H. Yanai, S. K. Kim, T. Tsukamoto, H. Miyata, Prafulla Kumar Behera, T. Takahashi, N. C. Hastings, Y. Hoshi, Y. Yusa, A. Ishikawa, F. Handa, Byung Gu Cheon, J. Schümann, F. Takasaki, Y. Choi, T. Hara, P. Križan, S. Uno, C. Schwanda, Kevin Varvell, A. Matyja, H. Aihara, Z. P. Zhang, T. Matsumoto, M. Nakao, J. MacNaughton, K. Inami, H. Hayashii, M. Z. Wang, K. Kinoshita, S. Saitoh, E. Nakano, T. Iijima, V.A. Sidorov, A. Yamaguchi, S. W. Lin, L. E. Piilonen, R. Kulasiri, R. Chistov, S. N. Tovey, Y. Yamashita, T. Sumiyoshi, M. Bračko, T. Nagamine, H. C. Huang, N. Parslow, H. Shibuya, V. Eiges, W. Ostrowicz, A. Sugi, A. M. Bakich, Z. Natkaniec, T. Ohshima, N. Gabyshev, Samo Stanič, C. H. Wang, M. Yamauchi, M. Rozanska, Y. Sakai, and G. N. Taylor
Subjects: Physics, KEKB, Angular distribution, Branching fraction, Electron–positron annihilation, Analytical chemistry, General Physics and Astronomy, CP violation, High Energy Physics::Experiment
Abstract: We report the first observation of the charmless vector-vector decay process B-/+-->rho(-/+)rho(0). The measurement uses a 78 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider operating at the Y(4S) resonance. We obtain a branching fraction of B (B-/+-->rho(-/+)rho(0))=[31.7+/-7.1(stat)(-6.7)(+3.8)(syst)]x10(-6). An analysis of the rho helicity-angle distributions gives a longitudinal polarization fraction of Gamma(L)/Gamma=0.95+/-0.11(stat)+/-0.02(syst). We also measure the direct-CP-violating asymmetry A(CP)(B-/+-->rho(-/+)rho(0))=0.00+/-0.22(stat)+/-0.03(syst).
Published: 2003

120. Measurement of branching fraction ratios andCPasymmetries inB±→DCPK±

Author: S. K. Swain, T. E. Browder, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, E. Banas, A. Bay, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, B. C. K. Casey, M.-C. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, T. Hara, H. Hayashii, M. Hazumi, I. Higuchi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, H. Matsumoto, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyata, J. Mueller, T. Nagamine, Y. Nagasaka, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, 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, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, M. Rozanska, H. Sagawa, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, J. Schümann, A. J. Schwartz, T. Seki, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, T. Shibata, H. Shibuya, B. Shwartz, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, S. E. Vahsen, G. Varner, K. E. Varvell, C. H. Wang, J. G. Wang, M. Watanabe, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, Heyoung Yang, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, D. Žontar, and D. Zürcher
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, KEKB, Branching fraction, Resonance, Charge (physics)
Abstract: We report results on the decay $B^{-} \to D_{CP}K^{-}$ and its charge conjugate using a data sample of 85.4 million $B\bar{B}$ pairs recorded at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric $e^{+}e^{-}$ storage ring. Ratios of branching fractions of Cabibbo-suppressed to Cabibbo-favored processes are determined to be ${\cal B}(B^- \to D^0 K^-)/{\cal B}(B^- \to D^0 \pi^-)= 0.077 \pm 0.005(stat) \pm 0.006(sys)$, ${\cal B}(B^- \to D_1 K^-)/{\cal B}(B^- \to D_1 \pi^-) = 0.093 \pm 0.018(stat) \pm 0.008(sys)$ and ${\cal B}(B^- \to D_2 K^-)/{\cal B}(B^- \to D_2 \pi^-) = 0.108 \pm 0.019(stat) \pm 0.007(sys)$ where the indices 1 and 2 represent the CP=+1 and CP=$-$1 eigenstates of the $D^{0}-\bar{D^{0}}$ system, respectively. We find the partial-rate charge asymmetries for $B^{-} \to D_{CP}K^{-}$ to be ${\cal{A}}_1 = 0.06 \pm 0.19(stat) \pm 0.04(sys)$ and ${\cal{A}}_2 = -0.19 \pm 0.17(stat) \pm 0.05(sys)$.
Published: 2003

121. Improved measurement of the partial-rateCPasymmetry inB+→K0π+andB−→K0π−decays

Author: Y. Unno, K. Suzuki, K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, S. Bahinipati, A. M. Bakich, Y. Ban, S. Banerjee, 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, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, F. Handa, H. Hayashii, M. Hazumi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, S.-W. Lin, D. Liventsev, J. MacNaughton, F. Mandl, D. Marlow, H. Matsumoto, T. Matsumoto, A. Matyja, W. Mitaroff, H. Miyake, H. Miyata, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, 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, H. Park, K. S. Park, L. S. Peak, J.-P. Perroud, L. E. Piilonen, N. Root, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, A. J. Schwartz, T. Seki, S. Semenov, K. Senyo, M. E. Sevior, T. Shibata, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, K. E. Varvell, C. H. Wang, J. G. Wang, M.-Z. Wang, M. Watanabe, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, H. Yanai, Heyoung Yang, C. C. Zhang, J. Zhang, Z. P. Zhang, Y. Zheng, D. Žontar, and D. Zürcher
Subjects: Physics, Nuclear and High Energy Physics, Nuclear magnetic resonance, KEKB, media_common.quotation_subject, Resonance, Asymmetry, Storage ring, media_common
Abstract: We report an improved measurement of the partial-rate CP asymmetry in B±→K0π± decays. The analysis is based on a data sample of 85×106 BB pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e +e- storage ring. We measure ACP(K 0π±) = 0.07-0.08 +0.09 +0.03 +0.01, where the first and second errors are statistical and systematic, respectively; the corresponding 90% confidence-level interval is -0.10
Published: 2003

122. 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

123. 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

124. Observation of B-/+--rho-/+rho0 decays

Author: J, Zhang, M, Nakao, K, Abe, T, Abe, I, Adachi, H, Aihara, M, Akatsu, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, S, Bahinipati, A M, Bakich, Y, Ban, E, Banas, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, B C K, Casey, P, Chang, Y, Chao, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, M, Danilov, L Y, Dong, J, Dragic, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, A, Gordon, R, Guo, F, Handa, T, Hara, N C, Hastings, H, Hayashii, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, Y B, Hsiung, 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, S U, Kataoka, N, Katayama, H, Kawai, N, Kawamura, T, Kawasaki, D W, Kim, H J, Kim, Hyunwoo, Kim, J H, Kim, S K, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, G, Leder, S H, Lee, 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, Miyata, D, Mohapatra, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, J W, Nam, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, H, Park, K S, Park, N, Parslow, J-P, Perroud, L E, Piilonen, M, Rozanska, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, A, Satpathy, O, Schneider, J, Schümann, C, Schwanda, A J, Schwartz, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, T, Shibata, H, Shibuya, V, Sidorov, J B, Singh, S, Stanic, M, Staric, A, Sugi, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, S K, Swain, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, M, Tanaka, G N, Taylor, Y, Teramoto, T, Tomura, S N, Tovey, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, S, Uno, 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, Heyoung, Yang, Y, Yusa, Z P, Zhang, Y, Zheng, V, Zhilich, D, Zontar, and D, Zürcher
Abstract: We report the first observation of the charmless vector-vector decay process B-/+--rho(-/+)rho(0). The measurement uses a 78 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider operating at the Upsilon(4S) resonance. We obtain a branching fraction of B(B-/+--rho(-/+)rho(0))=[31.7+/-7.1(stat)+3.8-6.7(syst)]x10(-6). An analysis of the rho helicity-angle distributions gives a longitudinal polarization fraction of Gamma(L)/Gamma=0.95+/-0.11(stat)+/-0.02(syst). We also measure the direct-CP-violating asymmetry A(CP)(B-/+--rho(-/+)rho(0))=0.00+/-0.22(stat)+/-0.03(syst).
Published: 2003

125. Evidence for B--phiphiK

Author: H-C, Huang, K, Abe, T, Abe, I, Adachi, H, Aihara, M, Akatsu, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, E, Banas, A, Bay, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, B C K, Casey, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, Y, Choi, Y K, Choi, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, R, Guo, J, Haba, F, Handa, T, Hara, N C, Hastings, H, Hayashii, M, Hazumi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, Y B, Hsiung, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, Y, Iwasaki, H K, Jang, J H, Kang, J S, Kang, P, Kapusta, N, Katayama, H, Kawai, N, Kawamura, T, Kawasaki, H, Kichimi, D W, Kim, H J, Kim, Hyunwoo, Kim, J H, Kim, K, Kinoshita, P, Koppenburg, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, Y-J, Kwon, G, Leder, S H, Lee, T, Lesiak, J, Li, A, Limosani, S-W, Lin, D, Liventsev, J, MacNaughton, G, Majumder, F, Mandl, D, Marlow, H, Matsumoto, T, Matsumoto, W, Mitaroff, H, Miyata, G R, Moloney, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, M, Nakao, H, Nakazawa, J W, Nam, Z, Natkaniec, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, H, Park, K S, Park, N, Parslow, J-P, Perroud, M, Peters, L E, Piilonen, M, Rozanska, H, Sagawa, S, Saitoh, Y, Sakai, T R, Sarangi, A, Satpathy, O, Schneider, J, Schümann, C, Schwanda, A J, Schwartz, T, Seki, S, Semenov, M E, Sevior, T, Shibata, H, Shibuya, V, Sidorov, J B, Singh, S, Stanic, M, Staric, A, Sugi, K, Sumisawa, T, Sumiyoshi, S, Suzuki, S Y, Suzuki, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, T, Tomura, S N, Tovey, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, S, Uno, 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, Heyoung, Yang, Y, Yusa, C C, Zhang, Z P, Zhang, Y, Zheng, V, Zhilich, and D, Zontar
Abstract: We report evidence for the decay mode B--phiphiK based on an analysis of 78 fb(-1) of data collected with the Belle detector at KEKB. This is the first example of a b--sssss transition. The branching fraction for this decay is measured to be B(B+/---phiphiK+/-)=(2.6(+1.1)(-0.9)+/-0.3)x10(-6) for a phiphi invariant mass below 2.85 GeV/c(2). Results for other related charmonium decay modes are also reported.
Published: 2003

126. Measurement of theB0−B0mixing rate withB0(B0)→D*∓π±partial reconstruction

Author: Y. Zheng, T. E. Browder, K. Abe, R. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, B. C. K. Casey, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, S. Eidelman, V. Eiges, Y. Enari, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, C. Hagner, F. Handa, T. Hara, N. C. Hastings, K. Hasuko, M. Hazumi, E. M. Heenan, I. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, Y. Igarashi, T. Iijima, K. Inami, H. Ishino, H. Iwasaki, M. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, S. U. Kataoka, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, J. H. Kim, S. K. Kim, K. Kinoshita, S. Kobayashi, S. Korpar, P. Krokovny, A. Kuzmin, Y.-J. Kwon, G. Leder, S. H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, S. Matsumoto, T. Matsumoto, W. Mitaroff, Y. Miyabayashi, H. Miyake, H. Miyata, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, C. W. Park, H. Park, K. S. Park, J.-P. Perroud, L. E. Piilonen, F. J. Ronga, K. Rybicki, H. Sagawa, Y. Sakai, T. R. Sarangi, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, R. Seuster, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, M. Yokoyama, Y. Yuan, C. C. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, Resonance, Charge (physics), law.invention, KEKB, law, High Energy Physics::Experiment, Collider, Lepton, Bar (unit)
Abstract: We report a measurement of the $B^0-\bar{B}^0$ mixing parameter $\Delta m_d$ based on a $\rm 29.1~fb^{-1}$ sample of $\Upsilon (4S)$ resonance decays collected by the Belle detector at the KEKB asymmetric $e^+ e^-$ collider. We use events with a partially reconstructed $B^0(\bar{B}^0) \to D^{*\mp} \pi^{\pm}$ candidate and where the flavor of the accompanying $B$ meson is identified by the charge of the lepton from a $B^0(\bar{B}^0) \to X^{\mp} \ell^{\pm} \nu$ decay. The proper-time difference between the two $B$ mesons is determined from the distance between the two decay vertices. From a simultaneous fit to the proper-time distributions for the same-flavor ($B^0(\bar{B}^0)$, $\ell^{\pm}$) and opposite-flavor ($B^0(\bar{B}^0)$, $\ell^{\mp}$) event samples, we measure the mass difference between the two mass eigenstates of the neutral $B$ meson to be $\Delta m_d$= $(0.509 \pm 0.017~(\rm stat) \pm 0.020~(\rm syst))~ps^{-1}$.
Published: 2003

127. Studies of the DecayB±→DCPK±

Author: K. Abe, N. Abe, R. Abe, T. Abe, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, M.-C. Chang, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, H. Fujii, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, N. Katayama, 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, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, J. L. Rodriguez, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, 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. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, 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, P. Yeh, Y. Yuan, Y. Yusa, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle decay, Particle physics, KEKB, Branching fraction, Electron–positron annihilation, Hadron, Analytical chemistry, Pi, General Physics and Astronomy, CP violation, B meson
Abstract: We report studies of the Cabibbo-suppressed decay B+/- --> DCPK+/-, where D-CP denotes CP eigenstates of the D-0 - (D) over bar (0) system. The analysis is based on a 29.1 fb(-1) sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e(+)e(-) storage ring. We measure ratios of branching fractions, relative to Cabibbo-favored B+/--->D(CP)pi+/-, of B>(B- --> D1K-)/B(B- --> D(1)pi(-)) = 0.125 +/-0.036 +/- 0.010 and B(B- --> D2K-)/B(B- --> D(2)pi(-)) = 0.119 +/- 0.028 +/- 0.006; the index 1 (2) denotes the CP = +1 (-1) eigenstate. We also extract the partial rate asymmetries for B+/- --> DCPK+/-, finding A(1) = 0.29 +/- 0.26 +/- 0.05 and A(2) = -0.22 +/- 0.24 +/- 0.04.
Published: 2003

128. Measurement of the Electroweak Penguin ProcessB→Xsℓ+ℓ−

Author: J. Kaneko, K. 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, W. Bartel, A. Bay, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, R. Guo, J. Haba, F. Handa, T. Hara, Y. Harada, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, T. Hojo, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, 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, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, G. R. Moloney, T. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, K. Neichi, 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, H. Park, K. S. Park, J.-P. Perroud, M. Peters, L. E. Piilonen, N. Root, K. Rybicki, H. Sagawa, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, H. Tajima, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, K. Trabelsi, W. Trischuk, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, Y. Ushiroda, 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, M. Yokoyama, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, Strange quark, Muon, Branching fraction, Electron–positron annihilation, Hadron, Electroweak interaction, General Physics and Astronomy, Nuclear physics, KEKB, High Energy Physics::Experiment, B meson, Nuclear Experiment
Abstract: We report the first measurement of the branching fraction for the inclusive decay B → X s l + l - , where l is either an electron or a muon, and X s is a hadronic recoil system that contains an s quark. We analyzed a data sample of 65.4 x 10 6 B meson pairs collected with the Belle detector at the KEKB e + e - asymmetric-energy collider. We find B(B → X s l + l - ) = [6.1 ′ 1.4(stat) + 1 . 4 - 1 . 1 (syst)] × 10 - 6 for dilepton masses greater than 0.2 GeV/c 2 .
Published: 2003

129. Free ion yields for tetramethylsilane and tetramethylgermanium

Author: K. Neichi, Kazuo Hasegawa, K. Masuda, H. Yuta, Ryusaburo Kikuchi, K. Suzuki, Masato Higuchi, Y. Hoshi, H. Iso, M. Sakamoto, Koji Abe, N. Kawamura, Kazumasa Miyano, F. Suekane, and K. Oyama
Subjects: chemistry.chemical_compound, Thermalisation, Materials science, chemistry, Impurity, Electric field, Ionization, Analytical chemistry, Electron, Dielectric, Tetramethylsilane, Ion
Abstract: The free ion yields from /sup 207/Bi conversion electrons were measured as a function of applied electric field using ionization chambers filled with tetramethylsilane (TMS) and tetramethylgermanium (TMG). The distributions for thermalization lengths of electrons were calculated by using Gaussian and exponential forms. The total free ion yields considering the impurity effect in liquid, and the thermalization lengths of electrons in TMS and TMG were determined to be 3.35+or-0.49, 3.42+or-0.56 and 165+or-18 AA, 185+or-24 AA, respectively. >
Published: 2003

130. M266 AVAILABILITY OF TRANSVAGINAL NEEDLE BIOPSY FOR SUSPECTED ENDOMETRIAL MALIGNANCY IN PATIENTS UNABLE TO UNDERGO ENDOMETRIAL SAMPLING WITH A CONVENTIONAL CURETTAGE METHOD

Author: N. Kawamura and T. Sumikura
Subjects: medicine.medical_specialty, business.industry, medicine.medical_treatment, Endometrial sampling, Obstetrics and Gynecology, General Medicine, Malignancy, medicine.disease, Curettage, Needle biopsy, medicine, In patient, Radiology, business
Published: 2012

131. Radiation damage to tetramethlysilane and tetramethlygermanium ionization chambers

Author: K. Neichi, K. Hasegawa, H. Akaishi, K. Miyano, Y. Hoshi, K. Masuda, R. Kikuchi, T. Nagamine, J. Katayama, Masato Higuchi, K. Abe, K. Oyama, T. Nakajima, N. Kawamura, F. Suekane, and H. Yuta
Subjects: Nuclear and High Energy Physics, Dosimeter, Materials science, Analytical chemistry, Particle detector, Ion, Nuclear physics, chemistry.chemical_compound, Nuclear Energy and Engineering, chemistry, Ionization, Ionization chamber, Radiation damage, Electrical and Electronic Engineering, Cobalt-60, Tetramethylsilane
Abstract: Two detector media suitable for a warm liquid ionization chamber filled with tetramethylsilane (TMS) and tetramethylgermanium (TMG) were exposed to /spl gamma/-radiation from a /sup 60/Co source up to a dose of 579 Gray and 902 Gray, respectively. The electron lifetimes and the free ion yields were measured as a function of accumulated radiation dose. A similar behavior of the electron lifetimes and the free ion yields with increasing radiation dose was observed between the TMS and TMG ionization chambers. >
Published: 1994

132. Measurement of theB0−B¯0Mixing ParameterΔmdusing SemileptonicB0Decays

Author: K. Hara, M. Hazumi, K. 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, 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, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, J. Dragic, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, R. Guo, J. Haba, K. Hanagaki, F. Handa, T. Hara, N. C. Hastings, H. Hayashii, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, Y. Hoshi, W.-S. Hou, Y. B. Hsiung, S.-C. Hsu, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, H. Kakuno, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, Hyunwoo Kim, T. H. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, T. Matsuishi, S. Matsumoto, T. Matsumoto, K. Miyabayashi, Y. Miyabayashi, H. Miyata, 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. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, 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, M. Yokoyama, Y. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, High Energy Physics::Lattice, High Energy Physics::Phenomenology, General Physics and Astronomy, Resonance, law.invention, Distribution (mathematics), KEKB, law, High Energy Physics::Experiment, B meson, Collider, Mixing (physics)
Abstract: We present a measurement of the B0-Bmacr;(0) mixing parameter Deltam(d) using neutral B meson pairs in a 29.1 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We exclusively reconstruct one neutral B meson in the semileptonic B0-->D(*-)l(+)nu decay mode and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two flavor-tagged B meson decay points, we obtain Deltam(d)=(0.494+/-0.012+/-0.015) ps(-1), where the first error is statistical and the second error is systematic.
Published: 2002

133. Pressure contact assembly technology of high power devices

Author: Hideo Matsuda, M. Hiyoshi, and N. Kawamura
Subjects: Reliability (semiconductor), business.industry, Computer science, Electrical engineering, Thyristor, Power semiconductor device, Semiconductor device, Integrated circuit packaging, Insulated-gate bipolar transistor, Chip, business, Diode
Abstract: The paper describes pressure contact technology applied to high power semiconductor devices. Specific application to multiple chip assembly, particularly IGBT chips, is dealt with, and improved reliability characteristics are demonstrated.
Published: 2002

134. High reliability UMOSFET with oxide-nitride complex gate structure

Author: T. Kawakami, N. Matuda, S. Izumi, Yoshiro Baba, S. Yawata, and N. Kawamura
Subjects: Materials science, Planar, Reliability (semiconductor), business.industry, Gate oxide, Gate dielectric, MOSFET, Electrical engineering, Optoelectronics, Breakdown voltage, Time-dependent gate oxide breakdown, Logic level, business
Abstract: In 1985, Ueda et al. proposed the UMOSFET structure. For the last ten years, ON resistance of UMOSFET has been much lower than that of planar DMOSFET. However, the reliability of the trench gate characteristics of UMOSFET has not been reported so far. In our experiment, the breakdown voltage of the trench gate was about half that of the planar gate in the same oxide thickness, and the trench gate was easily destroyed by bias stress and thermal stress. The oxide-nitride complex gate structure overcomes these difficulties. Optimizing complex film gate structure, logic level UMOSFET with high gate reliability, same as that of planar MOSFET, can be obtained.
Published: 2002

135. A study of energy resolution in a gridded ionization chamber filled with tetramethylsilane and tetramethylgermanium

Author: J. Katayama, K. Abe, N. Kawamura, M. Neichi, H. Hara, Y. Hoshi, T. Nakajima, F. Suekane, H. Yuta, and K. Masuda
Subjects: Argon, Resolution (electron density), chemistry.chemical_element, Electron, Cathode, law.invention, Anode, chemistry.chemical_compound, Thermalisation, chemistry, law, Ionization chamber, Atomic physics, Tetramethylsilane
Abstract: The energy resolutions of 976 keV conversion electrons from a /sup 207/Bi source are measured in a gridded ionization chamber filled with tetramethylsilane (TMS) and tetramethylgermanium (TMG), and are found to be about 5.71, 5.53% (RMS) for TMS and TMG, respectively. We discuss on the difference between the obtained energy resolution and the theorically limited energy resolution. We also deduce a simple method of estimating the electron lifetime by a gridded ionization chamber. The electron lifetime, free ion yield and thermalization length for these liquids are measured by this simple method.
Published: 2002

136. Observation ofDs+K−and Evidence forDs+π−Final States in NeutralBDecays

Author: P. Krokovny, K. 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, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, K. Hanagaki, F. Handa, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Igaki, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, H. K. Jang, J. Kaneko, J. H. Kang, J. S. Kang, 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, K. Kinoshita, S. Kobayashi, S. Korpar, P. Križan, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, C. W. Park, H. Park, J.-P. Perroud, M. Peters, L. E. Piilonen, F. J. Ronga, N. Root, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, C. Schwanda, S. Semenov, K. Senyo, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, 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, C. C. Zhang, J. Zhang, Z. P. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear magnetic resonance, KEKB, Annihilation, Branching fraction, Electron–positron annihilation, Pi, Analytical chemistry, General Physics and Astronomy, Value (computer science), B meson
Abstract: We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel B(0)-->D(+)(s)K- is found in a sample of 85 x 10(6) BB; events, collected with the Belle detector at KEKB, with a branching fraction B(B(0)-->D(+)(s)K-)=(4.6(+1.2)(-1.1)+/-1.3) x 10(-5). We also obtain evidence for the B0-->D(+)(s)pi(-) decay with branching fraction B(B0-->D(+)(s)pi(-))=(2.4(+1.0)(-0.8)+/-0.7) x 10(-5). This value may be used to extract a model-dependent value of |V(ub)|.
Published: 2002

137. RadiativeBMeson Decays intoKπγandKππγFinal States

Author: S. Nishida, M. Nakao, K. Abe, T. Abe, Byoung Sup Ahn, H. Aihara, M. Akatsu, Y. Asano, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, W. Bartel, A. Bay, I. Bedny, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, 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, T. Gershon, A. Gordon, K. Gotow, R. Guo, J. Haba, T. Hara, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, P. Jalocha, H. K. Jang, J. H. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, T. H. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, S. Matsumoto, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, S. Mori, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, J. W. Nam, Z. Natkaniec, K. Neichi, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, 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, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, 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, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, Y. Ushiroda, 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, Y. Yuan, Y. Yusa, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, General Physics and Astronomy
Published: 2002

138. A search for freonless gas mixture for glass RPC

Author: S. Narita, K. Watanabe, K. Abe, F. Handa, I. Higuchi, Y. Hoshi, N. Kawamura, K. Kumagai, Y. Mikami, N. Murono, T. Nagamine, K. Neichi, T. Takahashi, M. Yamaga, A. Yamaguchi, Y. Yusa, and H. Yuta
Published: 2002

139. Multi-beam light source using optical waveguide for optical recording

Author: H. Okumura, K. Arai, N. Kawamura, H. Tokumaru, and H. Okuda
Published: 2002

140. Improved measurement of mixing-inducedCPviolation in the neutralBmeson system

Author: K. Abe, T. Abe, I. Adachi, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, E. Banas, A. Bay, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, K. Gotow, R. Guo, J. Haba, K. Hanagaki, F. Handa, K. Hara, T. Hara, Y. Harada, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, T. Hojo, T. Hokuue, Y. Hoshi, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, H. Kakuno, J. Kaneko, J. H. Kang, J. S. Kang, 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, K. Kinoshita, S. Kobayashi, K. Korotushenko, S. Korpar, P. Križan, P. Krokovny, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, A. Limosani, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, G. R. Moloney, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, H. Nakazawa, J. W. Nam, Z. Natkaniec, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, T. Okabe, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, K. S. Park, J.-P. Perroud, L. E. Piilonen, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, H. Tajima, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, K. Trabelsi, W. Trischuk, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, N. Uozaki, Y. Ushiroda, 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, H. Yanai, J. Yashima, P. Yeh, M. Yokoyama, Y. Yuan, Y. Yusa, H. Yuta, C. C. Zhang, J. Zhang, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, High Energy Physics::Phenomenology, FOS: Physical sciences, Resonance, High Energy Physics - Experiment, Standard Model, High Energy Physics - Experiment (hep-ex), KEKB, Mixing (mathematics), CP violation, High Energy Physics::Experiment, B meson
Abstract: We present an improved measurement of the standard model CP violation parameter sin2phi_1 (also known as sin2beta) based on a sample of 85 times 10^6 B Bbar pairs collected at the Upsilon(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, psi(2S) K_S, chi_{c1} K_S, eta_c K_S, J/psi K^{*0}, or J/psi K_L CP-eigenstate decay channel and the flavor of the accompanying B meson is identified from its decay products. From the asymmetry in the distribution of the time interval between the two B meson decay points, we obtain sin2phi_1 = 0.719 +/- 0.074(stat) +/- 0.035(syst)., Comment: 10 pages, 3 figures, 3 tables, accepted for publication in PRD Rapid Communications
Published: 2002

141. Observation ofB±→ωK±Decay

Author: R.-S. Lu, K. Abe, N. Abe, R. Abe, T. Abe, I. Adachi, H. Aihara, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, E. Banas, I. Bedny, P. K. Behera, I. Bizjak, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, B. C. K. Casey, M.-C. Chang, P. Chang, Y. Chao, K.-F. Chen, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, C. W. Everton, C. Fukunaga, N. Gabyshev, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, P. Kapusta, S. U. Kataoka, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, S. K. Kim, K. Kinoshita, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, G. Leder, S. H. Lee, J. Li, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, T. Matsuishi, S. Matsumoto, T. Matsumoto, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, 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, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, N. Root, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, V. Sidorov, J. B. Singh, N. Soni, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, Y. Ushiroda, 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, Y. Yamashita, M. Yamauchi, P. Yeh, Y. Yuan, J. Zhang, Z. P. Zhang, Y. Zheng, and D. Žontar
Subjects: Physics, General Physics and Astronomy
Published: 2002

142. 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

143. Publisher’s Note: Observation of theηc(2S)in ExclusiveB→KKSK−π+Decays [Phys. Rev. Lett89, 102001 (2002)]

Author: S.-K. Choi, S. L. Olsen, 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, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, Y. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, H. Fujii, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, A. Gordon, R. Guo, F. Handa, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, J. Kaneko, J. H. Kang, J. S. Kang, P. Kapusta, 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, T. H. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, S. Matsumoto, T. Matsumoto, 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, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, S. Semenov, K. Senyo, M. E Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, S. N. Tovey, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, Y. Ushiroda, 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, M. Yokoyama, Y. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, General Physics and Astronomy
Published: 2002

144. Observation of theηc(2S)in ExclusiveB→KKSK−π+Decays

Author: S.-K. Choi, S. L. Olsen, 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, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, Y. Choi, M. Danilov, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, F. Fang, H. Fujii, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, A. Gordon, R. Guo, F. Handa, T. Hara, Y. Harada, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, S. R. Hou, W.-S. Hou, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, J. Kaneko, J. H. Kang, J. S. Kang, P. Kapusta, 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, T. H. Kim, K. Kinoshita, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, S. Matsumoto, T. Matsumoto, 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, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, C. W. Park, H. Park, L. S. Peak, J.-P. Perroud, M. Peters, L. E. Piilonen, F. J. Ronga, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, T. Tomura, S. N. Tovey, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, S. Uno, Y. Ushiroda, 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, M. Yokoyama, Y. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, Electron–positron annihilation, General Physics and Astronomy, High Energy Physics::Experiment, State (functional analysis), Atomic physics
Abstract: We report the observation of a narrow peak in the ${K}_{S}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ invariant mass distribution in a sample of exclusive $B\ensuremath{\rightarrow}K{K}_{S}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ decays collected with the Belle detector at the KEKB asymmetric ${e}^{+}{e}^{\ensuremath{-}}$ collider. The measured mass of the peak is $M=3654\ifmmode\pm\else\textpm\fi{}6(\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t})\ifmmode\pm\else\textpm\fi{}8(\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t})\text{ }\text{ }\mathrm{M}\mathrm{e}\mathrm{V}/{c}^{2}$, and we place a 90% confidence level upper limit on the width of $\ensuremath{\Gamma}l55\text{ }\text{ }\mathrm{M}\mathrm{e}\mathrm{V}/{c}^{2}$. The properties agree with heavy-quark potential model expectations for the ${\ensuremath{\eta}}_{c}(2S)$ meson, the $n=2$ singlet $S$ charmonium state.
Published: 2002

145. Measurement of the electroweak penguin process B--X(s)l+l

Author: J, Kaneko, K, 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, W, Bartel, A, Bay, P K, Behera, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, B C K, Casey, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, Y, Choi, Y K, Choi, M, Danilov, L Y, Dong, S, Eidelman, V, Eiges, Y, Enari, C W, Everton, F, Fang, H, Fujii, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, R, Guo, J, Haba, F, Handa, T, Hara, Y, Harada, N C, Hastings, H, Hayashii, M, Hazumi, E M, Heenan, I, Higuchi, T, Higuchi, L, Hinz, T, Hojo, Y, Hoshi, W-S, Hou, H-C, Huang, T, Igaki, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, H, Iwasaki, Y, Iwasaki, H K, Jang, J H, Kang, J S, Kang, 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, K, Kinoshita, S, Kobayashi, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, J, Li, A, Limosani, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, D, Marlow, S, Matsumoto, T, Matsumoto, W, Mitaroff, K, Miyabayashi, Y, Miyabayashi, H, Miyake, G R, Moloney, T, Mori, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, M, Nakao, J W, Nam, K, Neichi, 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, H, Park, K S, Park, J-P, Perroud, M, Peters, L E, Piilonen, N, Root, K, Rybicki, H, Sagawa, Y, Sakai, H, Sakamoto, M, Satapathy, A, Satpathy, O, Schneider, S, Schrenk, C, Schwanda, S, Semenov, K, Senyo, R, Seuster, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, N, Soni, S, Stanic, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, S Y, Suzuki, S K, Swain, H, Tajima, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, M, Tomoto, T, Tomura, K, Trabelsi, W, Trischuk, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, S, Uno, Y, Ushiroda, 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, M, Yokoyama, Y, Yuan, Y, Yusa, C C, Zhang, J, Zhang, Z P, Zhang, Y, Zheng, V, Zhilich, and D, Zontar
Abstract: We report the first measurement of the branching fraction for the inclusive decay B--X(s)l(+)l(-), where l is either an electron or a muon, and X(s) is a hadronic recoil system that contains an s quark. We analyzed a data sample of 65.4 x 10(6) B meson pairs collected with the Belle detector at the KEKB e(+)e(-) asymmetric-energy collider. We find B(B--X(s)l(+)l(-))=[6.1 +/-1.4(stat) +1.4-1.1(syst)] x 10(-6) for dilepton masses greater than 0.2 GeV/c(2).
Published: 2002

146. Observation of D+(s)K- and evidence for D+(s)pi- final states in neutral B decays

Author: P, Krokovny, K, 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, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, B C K, Casey, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, Y, Enari, C W, Everton, F, Fang, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, A, Gordon, R, Guo, J, Haba, K, Hanagaki, F, Handa, Y, Harada, H, Hayashii, M, Hazumi, E M, Heenan, T, Higuchi, L, Hinz, T, Hojo, T, Hokuue, Y, Hoshi, W-S, Hou, H-C, Huang, T, Igaki, T, Iijima, K, Inami, A, Ishikawa, H, Ishino, R, Itoh, H, Iwasaki, H K, Jang, J, Kaneko, J H, Kang, J S, Kang, 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, K, Kinoshita, S, Kobayashi, S, Korpar, P, Krizan, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, J, Li, A, Limosani, D, Liventsev, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, D, Marlow, T, Matsuishi, S, Matsumoto, T, Matsumoto, W, Mitaroff, K, Miyabayashi, Y, Miyabayashi, H, Miyake, H, Miyata, G R, Moloney, T, Mori, A, Murakami, T, Nagamine, Y, Nagasaka, T, Nakadaira, E, Nakano, M, Nakao, H, Nakazawa, J W, Nam, Z, Natkaniec, K, Neichi, S, Nishida, O, Nitoh, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S L, Olsen, Y, Onuki, W, Ostrowicz, H, Ozaki, P, Pakhlov, C W, Park, H, Park, J-P, Perroud, M, Peters, L E, Piilonen, F J, Ronga, N, Root, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, H, Sakamoto, M, Satapathy, A, Satpathy, O, Schneider, C, Schwanda, S, Semenov, K, Senyo, H, Shibuya, B, Shwartz, V, Sidorov, J B, Singh, S, Stanic, M, Staric, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, S Y, Suzuki, S K, Swain, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, T, Tomura, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, Y, Unno, S, Uno, Y, Ushiroda, 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, C C, Zhang, J, Zhang, Z P, Zhang, Y, Zheng, V, Zhilich, and D, Zontar
Abstract: We report the first observation of a B meson decay that is not accessible by a direct spectator process. The channel B(0)--D(+)(s)K- is found in a sample of 85 x 10(6) BB; events, collected with the Belle detector at KEKB, with a branching fraction B(B(0)--D(+)(s)K-)=(4.6(+1.2)(-1.1)+/-1.3) x 10(-5). We also obtain evidence for the B0--D(+)(s)pi(-) decay with branching fraction B(B0--D(+)(s)pi(-))=(2.4(+1.0)(-0.8)+/-0.7) x 10(-5). This value may be used to extract a model-dependent value of |V(ub)|.
Published: 2002

147. Charmless Hadronic Two-Body B Meson Decays

Author: H. Kichimi, S. Saitoh, Z. Natkaniec, G. Varner, R. Guo, M. Tomoto, S. Okuno, P. Križan, T. Aso, K. Suzuki, T. E. Browder, S. C. Hsu, Alexander E. Bondar, T. Tomura, M. E. Sevior, N. Tamura, T. Takahashi, S. Suzuki, B. D. Yabsley, T. Matsumoto, A. Ishikawa, A. Bay, D. Žontar, T. Nagamine, N. Katayama, J. H. Kang, H. Kawai, D. Marlow, M. Rozanska, N. Gabyshev, B. C.K. Casey, F. Handa, H. K. Jang, Prafulla Kumar Behera, T. Mori, T. Ohshima, M. Akatsu, H. Hayashii, H. Ozaki, S. Stanič, T. Sumiyoshi, I. Bedny, A. Murakami, Z. P. Zhang, H. Sakamoto, C. W. Park, T. H. Kim, M. Starič, T. Hara, K. Inami, K. Sumisawa, A. Sugi, N. Kawamura, J. B. Singh, Andrzej Bozek, Y. J. Kwon, T. Gershon, W. S. Hou, Kai-Feng Chen, K. Kinoshita, M. Hazumi, N. C. Hastings, E. M. Heenan, D. W. Kim, S. Uehara, Y. Ushiroda, V. Aulchenko, J. Haba, S. Schrenk, M. Danilov, Y. Yamada, K. Rybicki, S. Noguchi, Y. Choi, T. Tsuboyama, H. Palka, S. Nishida, E. Nakano, H. Yanai, Y. Iwasaki, G. N. Taylor, K. Miyabayashi, M. Satapathy, Y. Nagasaka, K. Senyo, S. Semenov, Li Jingyuan, H. Shibuya, N. Soni, S. H. Lee, K. Trabelsi, R. S. Lu, S. K. Choi, H. Park, F. Mandl, Y. Kawakami, Heejong Kim, A. Garmash, S. Tokuda, T. Nakadaira, S. L. Olsen, V. Zhilich, Y. Enari, M. Bračko, C. C. Wang, A. Yamaguchi, S. Kumar, H. Sagawa, I. Higuchi, H. J. Kim, Y. Asano, J. Brodzicka, B. Shwartz, P. Chang, Y. Igarashi, S. Ogawa, Y. Sakai, Minoru Tanaka, S. Matsumoto, J. G. Wang, R. Chistov, Samo Korpar, T. Abe, T. Okabe, A. Sugiyama, T. Iijima, J. Dragic, K. E. Varvell, J. S. Lange, Byung Gu Cheon, Y. Hoshi, L. S. Peak, R. Seuster, Meng Wang, Y. Yusa, C. Fukunaga, G. Majumder, M. Peters, P. Krokovny, V. Eiges, H. C. Huang, T. Aushev, G. R. Moloney, Masashi Yokoyama, E. Won, A. M. Bakich, L. Hinz, O. Schneider, J. S. Kang, T. Tsukamoto, T. Nozaki, A. Satpathy, Y. Watanabe, Y. Teramoto, A. Gordon, Hyunwoo Kim, C. H. Wang, T. Matsuishi, M. Yamauchi, Y. K. Choi, F. Fang, J. P. Perroud, L. Y. Dong, I. Bizjak, Y. Miyabayashi, C. Schwanda, H. Miyata, J. Tanaka, L. E. Piilonen, K. Ueno, R. Itoh, H. Aihara, I. Adachi, O. Nitoh, B. Golob, S. Eidelman, M. Nakao, N. Root, Byoung Sup Ahn, Y. Ban, J. W. Nam, S. Y. Suzuki, J. MacNaughton, A. Kuzmin, T. Higuchi, Y. Chao, G. Leder, K. Abe, R. Kulasiri, Y. Onuki, W. Ostrowicz, Y. Yamashita, H. Iwasaki, T. Igaki, S. Uno, Y. Unno, Y. Yuan, and F. Takasaki
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, Hadron, FOS: Physical sciences, Resonance, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Pion, KEKB, CP violation, B meson
Abstract: We report the results of a study of two-body B meson decays to the complete set of K pi, pi pi, and K K final states. The study is performed on a data sample of 31.7 +/- 0.3 million B B-bar events recorded on the Upsilon(4S) resonance by the Belle experiment at KEKB. We observe significant signals in all K pi final states and in the pi+ pi- and pi+ pi0 final states. We set limits on the pi0 pi0 and K K final states. A search is performed for partial-rate asymmetries between conjugate states for flavor-specific final states., Submitted to PRD
Published: 2002

148. Study ofCP-Violating Asymmetries inB0→π+π−Decays

Author: K. 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, I. Bedny, S. Behari, P. K. Behera, A. Bondar, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C. K. Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S.-K. Choi, Y. Choi, M. Danilov, L. Y. Dong, J. Dragic, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, C. W. Everton, F. Fang, H. Fujii, C. Fukunaga, M. Fukushima, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, H. Hamasaki, K. Hanagaki, F. Handa, K. Hara, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, T. Hojo, T. Hokuue, Y. Hoshi, K. Hoshina, S. R. Hou, W.-S. Hou, S.-C. Hsu, H.-C. Huang, T. Igaki, Y. Igarashi, T. Iijima, H. Ikeda, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwamoto, H. Iwasaki, Y. Iwasaki, D. J. Jackson, P. Jalocha, H. K. Jang, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, N. Kawamura, T. Kawasaki, H. Kichimi, D. W. Kim, Heejong Kim, H. J. Kim, H. O. Kim, Hyunwoo Kim, S. K. Kim, T. H. Kim, K. Kinoshita, S. Koishi, H. Konishi, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y.-J. Kwon, J. S. Lange, G. Leder, S. H. Lee, A. Limosani, D. Liventsev, R.-S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, Y. Mikami, W. Mitaroff, K. Miyabayashi, Y. Miyabayashi, H. Miyake, H. Miyata, G. R. Moloney, S. Mori, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, K. Neichi, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, F. Ohno, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, 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, E. Prebys, J. L. Rodriguez, F. J. Ronga, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, M. E. Sevior, H. Shibuya, B. Shwartz, V. Sidorov, J. B. Singh, S. Stanič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, K. Suzuki, S. Suzuki, S. Y. Suzuki, S. K. Swain, H. Tajima, T. Takahashi, F. Takasaki, M. Takita, K. Tamai, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, S. N. Tovey, K. Trabelsi, W. Trischuk, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M.-Z. Wang, Y. Watanabe, E. Won, B. D. Yabsley, Y. Yamada, M. Yamaga, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, J. Yashima, P. Yeh, M. Yokoyama, K. Yoshida, Y. Yuan, Y. Yusa, C. C. Zhang, J. Zhang, Y. Zheng, V. Zhilich, and D. Žontar
Subjects: Physics, Particle physics, KEKB, Meson, General Physics and Astronomy, Resonance, High Energy Physics::Experiment
Abstract: We present a measurement of $CP$-violating asymmetries in ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays based on a $41.8\text{ }{\mathrm{f}\mathrm{b}}^{\ensuremath{-}1}$ data sample collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. We fully reconstruct one neutral $B$ meson as a ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ $CP$ eigenstate and identify the flavor of the accompanying $B$ meson from its decay products. From the asymmetry in the distribution of the time intervals between the two $B$ meson decay points, we obtain the $CP$-violating asymmetry parameters ${\mathcal{S}}_{\ensuremath{\pi}\ensuremath{\pi}}=\ensuremath{-}{1.21}_{\ensuremath{-}0.27}^{+0.38}(\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t}{)}_{\ensuremath{-}0.13}^{+0.16}(\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t})$ and ${\mathcal{A}}_{\ensuremath{\pi}\ensuremath{\pi}}=+{0.94}_{\ensuremath{-}0.31}^{+0.25}(\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t})\ifmmode\pm\else\textpm\fi{}0.09(\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t})$.
Published: 2002

149. Measurement of the B(0)-B(0) mixing parameter Deltam(d) using semileptonic B0 decays

Author: K, Hara, M, Hazumi, K, 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, A, Bay, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, J, Brodzicka, T E, Browder, B C K, Casey, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, M, Danilov, L Y, Dong, J, Dragic, S, Eidelman, V, Eiges, Y, Enari, C W, Everton, F, Fang, C, Fukunaga, N, Gabyshev, A, Garmash, T, Gershon, B, Golob, R, Guo, J, Haba, K, Hanagaki, F, Handa, T, Hara, N C, Hastings, H, Hayashii, E M, Heenan, I, Higuchi, T, Higuchi, L, Hinz, Y, Hoshi, W-S, Hou, Y B, Hsiung, S-C, Hsu, H-C, Huang, T, Igaki, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, Y, Iwasaki, H K, Jang, H, Kakuno, J H, Kang, J S, Kang, N, Katayama, H, Kawai, Y, Kawakami, N, Kawamura, H, Kichimi, D W, Kim, Heejong, Kim, H J, Kim, Hyunwoo, Kim, T H, Kim, K, Kinoshita, S, Korpar, P, Krizan, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, J S, Lange, G, Leder, S H, Lee, J, Li, R-S, Lu, J, MacNaughton, G, Majumder, F, Mandl, T, Matsuishi, S, Matsumoto, T, Matsumoto, K, Miyabayashi, Y, Miyabayashi, H, Miyata, 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, Noguchi, T, Nozaki, S, Ogawa, T, Ohshima, T, Okabe, S, Okuno, S L, Olsen, Y, Onuki, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, H, Park, L S, Peak, J-P, Perroud, M, Peters, L E, Piilonen, N, Root, M, Rozanska, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, H, Sakamoto, M, Satapathy, A, Satpathy, O, Schneider, S, Schrenk, C, Schwanda, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, H, Shibuya, B, Shwartz, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, S Y, Suzuki, T, Takahashi, F, Takasaki, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, M, Tomoto, T, Tomura, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, Y, Unno, S, Uno, Y, Ushiroda, 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, M, Yokoyama, Y, Yuan, Y, Yusa, Z P, Zhang, V, Zhilich, and D, Zontar
Abstract: We present a measurement of the B0-Bmacr;(0) mixing parameter Deltam(d) using neutral B meson pairs in a 29.1 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We exclusively reconstruct one neutral B meson in the semileptonic B0--D(*-)l(+)nu decay mode and identify the flavor of the accompanying B meson from its decay products. From the distribution of the time intervals between the two flavor-tagged B meson decay points, we obtain Deltam(d)=(0.494+/-0.012+/-0.015) ps(-1), where the first error is statistical and the second error is systematic.
Published: 2002

150. Observation of B+/- --omegaK+/- decay

Author: R-S, Lu, K, Abe, N, Abe, R, Abe, T, Abe, I, Adachi, H, Aihara, Y, Asano, T, Aso, V, Aulchenko, T, Aushev, A M, Bakich, Y, Ban, E, Banas, I, Bedny, P K, Behera, I, Bizjak, A, Bondar, A, Bozek, M, Bracko, T E, Browder, B C K, Casey, M-C, Chang, P, Chang, Y, Chao, K-F, Chen, B G, Cheon, R, Chistov, S-K, Choi, Y, Choi, Y K, Choi, M, Danilov, L Y, Dong, A, Drutskoy, S, Eidelman, V, Eiges, C W, Everton, C, Fukunaga, N, Gabyshev, T, Gershon, B, Golob, A, Gordon, R, Guo, J, Haba, T, Hara, Y, Harada, H, Hayashii, M, Hazumi, E M, Heenan, T, Higuchi, L, Hinz, T, Hokuue, Y, Hoshi, W-S, Hou, S-C, Hsu, H-C, Huang, T, Igaki, Y, Igarashi, T, Iijima, K, Inami, A, Ishikawa, R, Itoh, H, Iwasaki, Y, Iwasaki, H K, Jang, J H, Kang, P, Kapusta, S U, Kataoka, N, Katayama, H, Kawai, Y, Kawakami, N, Kawamura, T, Kawasaki, H, Kichimi, D W, Kim, Heejong, Kim, H J, Kim, H O, Kim, Hyunwoo, Kim, S K, Kim, K, Kinoshita, P, Krokovny, R, Kulasiri, S, Kumar, A, Kuzmin, Y-J, Kwon, G, Leder, S H, Lee, J, Li, D, Liventsev, J, MacNaughton, G, Majumder, F, Mandl, T, Matsuishi, S, Matsumoto, T, Matsumoto, W, Mitaroff, K, Miyabayashi, Y, Miyabayashi, H, Miyake, H, Miyata, G R, Moloney, T, Mori, A, Murakami, T, Nagamine, Y, Nagasaka, T, Nakadaira, 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, W, Ostrowicz, H, Ozaki, H, Palka, C W, Park, H, Park, L S, Peak, J-P, Perroud, M, Peters, L E, Piilonen, N, Root, K, Rybicki, H, Sagawa, S, Saitoh, Y, Sakai, M, Satapathy, A, Satpathy, O, Schneider, S, Schrenk, S, Semenov, K, Senyo, R, Seuster, M E, Sevior, H, Shibuya, V, Sidorov, J B, Singh, N, Soni, S, Stanic, M, Staric, A, Sugi, A, Sugiyama, K, Sumisawa, T, Sumiyoshi, K, Suzuki, S, Suzuki, T, Takahashi, F, Takasaki, K, Tamai, N, Tamura, J, Tanaka, M, Tanaka, G N, Taylor, Y, Teramoto, S, Tokuda, M, Tomoto, T, Tomura, S N, Tovey, K, Trabelsi, T, Tsuboyama, T, Tsukamoto, S, Uehara, K, Ueno, S, Uno, Y, Ushiroda, 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, Y, Yamashita, M, Yamauchi, P, Yeh, Y, Yuan, J, Zhang, Z P, Zhang, Y, Zheng, and D, Zontar
Abstract: We report the first observation of the charmless two-body mode B+/---omegaK+/- decay, and a new measurement of the branching fraction for the B+/---omegapi(+/-) decay. The measured branching fractions are B(B+/---omegaK+/-)=(9.2(+2.6)(-2.3)+/-1.0)x10(-6) and B(B+/---omegapi(+/-))=(4.2(+2.0)(-1.8)+/-0.5)x10(-6). We also measure the partial rate asymmetry of B+/---omegaK+/- decays and obtain A(CP)=-0.21+/-0.28+/-0.03. The results are based on a data sample of 29.4 fb(-1) collected on the Upsilon(4S) resonance by the Belle detector at the KEKB e(+)e(-) collider.
Published: 2002

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