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201. Search for baryon and lepton number violating Z0 decays

Author: G. Abbiendi, K. Ackerstaff, G. Alexander, J. Allison, N. Altekamp, K.J. Anderson, S. Anderson, S. Arcelli, S. Asai, S.F. Ashby, D. Axen, G. Azuelos, A.H. Ball, E. Barberio, R.J. Barlow, R. Bartoldus, J.R. Batley, S. Baumann, J. Bechtluft, T. Behnke, K.W. Bell, G. Bella, A. Bellerive, S. Bentvelsen, S. Bethke, S. Betts, O. Biebel, A. Biguzzi, S.D. Bird, V. Blobel, I.J. Bloodworth, P. Bock, J. Böhme, D. Bonacorsi, M. Boutemeur, S. Braibant, P. Bright-Thomas, L. Brigliadori, R.M. Brown, H.J. Burckhart, P. Capiluppi, R.K. Carnegie, A.A. Carter, J.R. Carter, C.Y. Chang, D.G. Charlton, D. Chrisman, C. Ciocca, P.E.L. Clarke, E. Clay, I. Cohen, J.E. Conboy, O.C. Cooke, C. Couyoumtzelis, R.L. Coxe, M. Cuffiani, S. Dado, G.M. Dallavalle, R. Davis, S. De Jong, A. de Roeck, P. Dervan, K. Desch, B. Dienes, M.S. Dixit, J. Dubbert, E. Duchovni, G. Duckeck, I.P. Duerdoth, D. Eatough, P.G. Estabrooks, E. Etzion, F. Fabbri, M. Fanti, A.A. Faust, F. Fiedler, M. Fierro, I. Fleck, R. Folman, A. Fürtjes, D.I. Futyan, P. Gagnon, J.W. Gary, J. Gascon, S.M. Gascon-Shotkin, G. Gaycken, C. Geich-Gimbel, G. Giacomelli, P. Giacomelli, V. Gibson, W.R. Gibson, D.M. Gingrich, D. Glenzinski, J. Goldberg, W. Gorn, C. Grandi, K. Graham, E. Gross, J. Grunhaus, M. Gruwé, G.G. Hanson, M. Hansroul, M. Hapke, K. Harder, A. Harel, C.K. Hargrove, C. Hartmann, M. Hauschild, C.M. Hawkes, R. Hawkings, R.J. Hemingway, M. Herndon, G. Herten, R.D. Heuer, M.D. Hildreth, J.C. Hill, P.R. Hobson, M. Hoch, A. Hocker, K. Hoffman, R.J. Homer, A.K. Honma, D. Horváth, K.R. Hossain, R. Howard, P. Hüntemeyer, P. Igo-Kemenes, D.C. Imrie, K. Ishii, F.R. Jacob, A. Jawahery, H. Jeremie, M. Jimack, C.R. Jones, P. Jovanovic, T.R. Junk, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, P.I. Kayal, R.K. Keeler, R.G. Kellogg, B.W. Kennedy, D.H. Kim, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, D.S. Koetke, T.P. Kokott, M. Kolrep, S. Komamiya, R.V. Kowalewski, T. Kress, P. Krieger, J. von Krogh, T. Kuhl, P. Kyberd, G.D. Lafferty, H. Landsman, D. Lanske, J. Lauber, S.R. Lautenschlager, I. Lawson, J.G. Layter, D. Lazic, A.M. Lee, D. Lellouch, J. Letts, L. Levinson, R. Liebisch, B. List, C. Littlewood, A.W. Lloyd, S.L. Lloyd, F.K. Loebinger, G.D. Long, M.J. Losty, J. Ludwig, D. Liu, A. Macchiolo, A. Macpherson, W. Mader, M. Mannelli, S. Marcellini, C. Markopoulos, A.J. Martin, J.P. Martin, G. Martinez, T. Mashimo, P. Mättig, W.J. McDonald, J. McKenna, E.A. Mckigney, T.J. McMahon, R.A. McPherson, F. Meijers, S. Menke, F.S. Merritt, H. Mes, J. Meyer, A. Michelini, S. Mihara, G. Mikenberg, D.J. Miller, R. Mir, W. Mohr, A. Montanari, T. Mori, K. Nagai, I. Nakamura, H.A. Neal, B. Nellen, R. Nisius, S.W. O'Neale, F.G. Oakham, F. Odorici, H.O. Ogren, M.J. Oreglia, S. Orito, J. Pálinkás, G. Pásztor, J.R. Pater, G.N. Patrick, J. Patt, R. Perez-Ochoa, S. Petzold, P. Pfeifenschneider, J.E. Pilcher, J. Pinfold, D.E. Plane, P. Poffenberger, J. Polok, M. Przybycień, C. Rembser, H. Rick, S. Robertson, S.A. Robins, N. Rodning, J.M. Roney, K. Roscoe, A.M. Rossi, Y. Rozen, K. Runge, O. Runolfsson, D.R. Rust, K. Sachs, T. Saeki, O. Sahr, W.M. Sang, E.K.G. Sarkisyan, C. Sbarra, A.D. Schaile, O. Schaile, F. Scharf, P. Scharff-Hansen, J. Schieck, B. Schmitt, S. Schmitt, A. Schöning, M. Schröder, M. Schumacher, C. Schwick, W.G. Scott, R. Seuster, T.G. Shears, B.C. Shen, C.H. Shepherd-Themistocleous, P. Sherwood, G.P. Siroli, A. Sittler, A. Skuja, A.M. Smith, G.A. Snow, R. Sobie, S. Söldner-Rembold, S. Spagnolo, M. Sproston, A. Stahl, K. Stephens, J. Steuerer, K. Stoll, D. Strom, R. Ströhmer, B. Surrow, S.D. Talbot, S. Tanaka, P. Taras, S. Tarem, R. Teuscher, M. Thiergen, J. Thomas, M.A. Thomson, E. von Törne, E. Torrence, S. Towers, I. Trigger, Z. Trócsányi, E. Tsur, A.S. Turcot, M.F. Turner-Watson, I. Ueda, R. Van Kooten, P. Vannerem, M. Verzocchi, H. Voss, F. Wäckerle, A. Wagner, C.P. Ward, D.R. Ward, P.M. Watkins, A.T. Watson, N.K. Watson, P.S. Wells, N. Wermes, J.S. White, G.W. Wilson, J.A. Wilson, T.R. Wyatt, S. Yamashita, G. Yekutieli, V. Zacek, and D. Zer-Zion
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Detector, FOS: Physical sciences, Fizikai tudományok, Charge (physics), 01 natural sciences, Lepton number, High Energy Physics - Experiment, Baryon, High Energy Physics - Experiment (hep-ex), Természettudományok, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment, Conjugate
Abstract: Using data collected with the OPAL detector at LEP, we have searched for the processes e+e- -> Z0 -> p e-, p mu- and the charge conjugate final-states. These would violate the conservation of the baryon-number B, lepton-number L and the fermion-number n = (B+L). No evidence for such decays has been found, and the 95% confidence level upper limits on the partial widths Z0 -> p e and Z0 -> p mu are found to be 4.6 and 4.4 keV respectively., 16 pages, LaTeX, 2 ps figs included, submitted to Physics Letters B
Published: 1999
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202. A comparative study of the repeat dose toxicity of grepafloxacin and a number of other fluoroquinolones in rats

Author: S Yamashita, T Takizawa, K Owen, K Hasimoto, and N Itoh
Subjects: Male, 0301 basic medicine, Time Factors, Health, Toxicology and Mutagenesis, Quinolones, Pharmacology, Toxicology, Piperazines, Eating, 03 medical and health sciences, 0302 clinical medicine, Anti-Infective Agents, Crystalluria, medicine, Enoxacin, Animals, Humans, Antibacterial agent, Blood Cells, 030102 biochemistry & molecular biology, business.industry, Body Weight, Infant, Newborn, Organ Size, General Medicine, Grepafloxacin, Rats, Survival Rate, Ciprofloxacin, 030220 oncology & carcinogenesis, Toxicity, Urine osmolality, Lomefloxacin, Female, Joint Diseases, medicine.symptom, business, Fluoroquinolones, medicine.drug
Abstract: 1 Grepafloxacin is a new oral fluoroquinolone with potent activity against community acquired respiratory pathogens, including Streptococcus pneumoniae, and pharmacokinetic properties which allow once daily dosing. As part of its safety evaluation a study of 4 weeks duration was performed to compare the toxicity of grepafloxacin with that of a number of commercially available quinolones in the rat. 2 Groups of eight male Sprague-Dawley rats received either control material or grepafloxacin, enoxacin, lomefloxacin, ofloxacin or ciprofloxacin at an oral dosage of 300 mg/kg/day for 4 consecutive weeks. 3 Effects related to the antibacterial activity of the drugs were seen as increased caecal weight, decreased urinary excretion of sodium, increased water consumption, decreased urine volume, increased urine osmolality, soft stools and suppressed body weight gain. 4 It is well documented that fluoroquinolones can cause lesions in the cartilage of the major diarthrodial joints, and blister formation or erosion on the joint surface was observed in all quinolone-treated groups other than the grepafloxacin group. 5 Some quinolones, have been found to cause crystal-luria, which is often associated with secondary nephropathy in laboratory animals due to the poor solubility of quinolones under the alkaline conditions of the urine. In the present study, needle-like crystals in the urinary sediment were observed in enoxacin and ciprofloxacin treated groups only. 6 In conclusion, grepafloxacin was well tolerated and showed a low potential for joint toxicity and crystalluria compared to other quinolones.
Published: 1999
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203. Rate constants for the reactions of OH radicals with CH3OCF2CF3, CH3OCF2CF2CF3, and CH3OCF(CF3)2

Author: M. Kaise, S. Kondo, S. Yamashita, H. Ito, A. Takahashi, Kazuaki Tokuhashi, and A. Sekiya
Subjects: Arrhenius equation, Chemistry, Radical, Organic Chemistry, Atmospheric temperature range, Kinetic energy, Biochemistry, Inorganic Chemistry, symbols.namesake, Reaction rate constant, Impurity, symbols, Physical chemistry, Flash photolysis, Physical and Theoretical Chemistry, Laser-induced fluorescence
Abstract: The rate constants for the reactions of OH radicals with CH3OCF2CF3, CH3OCF2CF2CF3, and CH3OCF(CF3)2 have been measured over the temperature range 250–430 K. Kinetic measurements have been carried out using the flash photolysis, laser photolysis, and discharge flow methods combined respectively with the laser induced fluorescence technique. The influence of impurities in the samples was investigated by using gas-chromatography. The following Arrhenius expressions were determined: k(CH3OCF2CF3) = (1.90) × 10−12 exp[−(1510 ± 120)/T], k(CH3OCF2CF2CF3) = (2.06) × 10−12 exp[−(1540 ± 80)/T], and k(CH3OCF(CF3)2) = (1.94) × 10−12 exp[−(1450 ± 70)/T] cm3 molecule−1 s−1. © 1999 John Wiley & Sons, Inc. Int J Chem Kinet 31: 846–853, 1999
Published: 1999
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204. Chiba, T.: Life of Mountain: Assignment from Kunio Yanagida

Author: S. Yamashita
Published: 2007
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205. Vermehrte Erythroblastenzahl bei Neugeborenen als Hinweis auf transiente Hyperinsulinämie

Author: H Mizumoto, S Yamashita, and Y Iki
Published: 2015
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206. Enhanced ΛΛ production near threshold in the 12C(K−,K+) reaction

Author: H. Funahashi, Michiko Sekimoto, H. En'yo, K. Imai, I. S. Park, Tomokazu Fukuda, Minoru Yoshida, Ryuichi Takashima, S. Yokkaichi, J. M. Lee, J. K. Ahn, A. Higashi, Fujio Takeutchi, P. Tlustý, Kenichi Yoshida, Satoshi Mihara, C. Nagoshi, Masataka Iinuma, Y. Goto, S. Weibe, S. Yamashita, K. S. Chung, Shigeki Aoki, Akira Masaike, Toru Iijima, Norio Saito, M. S. Chung, Tomoko Yoshida, Y. Matsuyama, S. Makino, I. Nomura, Masaharu Ieiri, R. Susukita, Yasuyuki Matsuda, Kwang Souk Sim, Yoshitaka Itow, and Y.M. Shin
Subjects: Nuclear reaction, Momentum, Baryon, Physics, Nuclear and High Energy Physics, Hadron, Hyperon, Elementary particle, Fermion, Atomic physics, Lambda baryon
Abstract: Enhanced production of ΛΛ pairs, above levels predicted by a two-step process model, has been observed near threshold (in the mass range 2.23-2.26 GeV/c2) in the 12C(K−,K+) reaction at 1.66 GeV/c using a scintillating fiber target. The differential cross section for ΛΛ production in the momentum region 0.95≤pK+≤1.3 GeV/c averaged over the range 2.3o≤θK+≤14.7o was found to be 7.6±1.3 ±0.9 μ b/sr, and that for the enhancement was found to be approximately 3 μ b/sr.
Published: 1998
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207. Local structures around Cu2+and Zn2+ions related to cooperative jahn-teller distortions in dilute systems of K2Cux.Zn1F4

Author: M. Hidaka, K. Tanaka, M. Yoshimura, and S. Yamashita
Subjects: Distortion (mathematics), Ferromagnetism, Octahedron, Condensed matter physics, Extended X-ray absorption fine structure, Chemistry, Jahn–Teller effect, General Materials Science, Crystal structure, Symmetry (geometry), Absorption (chemistry), Instrumentation, Molecular physics
Abstract: The structural properties of the dilute systems of K2Cu x Zn1 x F4 have been studied by means of X-ray absorption fine structure (EXAFS) for the Cu-K edge and Zn-K edges. It is found that there are rigid-like Jahn-Teller distortions of the CuF6 octa-hedra in the region of 0.0 < x ≤ 1.0. It is also found that, in dilute systems, the ZnF6 octahedra at least show two kinds of shapes, of which one is characterized to have a 2-fold symmetry axis and the other to have a 4-fold symmetry axis in the (x-y) plane. Thus, the inner strains induced by the replacement of the Zn atoms by the Cu atoms are localized around the Zn atoms, and can be reduced by the appearance of the former ZnF6 octahedra showing a pseudo Jahn-Teller distortion.
Published: 1998
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208. Void formation and microstructural development in oxide dispersion strengthened ferritic steels during electron-irradiation

Author: Shigeharu Ukai, H. Takahashi, M. Nishida, N. Akasaka, Soumei Ohnuki, J. Saito, Takanori Suda, and S. Yamashita
Subjects: Nuclear and High Energy Physics, Void (astronomy), Number density, Materials science, Metallurgy, Oxide, Recrystallization (metallurgy), Microstructure, Grain size, chemistry.chemical_compound, Nuclear Energy and Engineering, chemistry, Martensite, General Materials Science, Dislocation
Abstract: ODS ferritic steels (13Cr–0.5Ti–0.2Y2O3) were prepared by the mechanical alloying method followed by the hot extrusion and several heat treatments including recrystallization. ODS steels with different heat treatment and a ferritic/martensitic (F/M) steel for the reference were irradiated to 12 dpa at 670–770 K in HVEM. After recrystallization, the dislocation density decreased with increasing grain size, however, the oxide particles did not show any obvious change in the size and the number density. During the electron-irradiation the microstructure was relatively stable, i.e. oxide particles showed good stability and the dislocation density remained almost constant. A limited void formation was observed in the specimens, and the suppressive effect due to dislocations with high number density was confirmed. From these results, the behavior of microstructure and the limited void formation in ODS steels have been discussed.
Published: 1998
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209. Multi-photon production in e+e− collisions at =183 GeV

Author: K. Ackerstaff, G. Alexander, J. Allison, N. Altekamp, K.J. Anderson, S. Anderson, S. Arcelli, S. Asai, S.F. Ashby, D. Axen, G. Azuelos, A.H. Ball, E. Barberio, R.J. Barlow, R. Bartoldus, J.R. Batley, S. Baumann, J. Bechtluft, T. Behnke, K.W. Bell, G. Bella, S. Bentvelsen, S. Bethke, S. Betts, O. Biebel, A. Biguzzi, S.D. Bird, V. Blobel, I.J. Bloodworth, M. Bobinski, P. Bock, J. Böhme, M. Boutemeur, S. Braibant, P. Bright-Thomas, R.M. Brown, H.J. Burckhart, C. Burgard, R. Bürgin, P. Capiluppi, R.K. Carnegie, A.A. Carter, J.R. Carter, C.Y. Chang, D.G. Charlton, D. Chrisman, C. Ciocca, P.E.L. Clarke, E. Clay, I. Cohen, J.E. Conboy, O.C. Cooke, C. Couyoumtzelis, R.L. Coxe, M. Cuffiani, S. Dado, G.M. Dallavalle, R. Davis, S. De Jong, L.A. del Pozo, A. de Roeck, K. Desch, B. Dienes, M.S. Dixit, M. Doucet, J. Dubbert, E. Duchovni, G. Duckeck, I.P. Duerdoth, D. Eatough, P.G. Estabrooks, E. Etzion, H.G. Evans, F. Fabbri, A. Fanfani, M. Fanti, A.A. Faust, F. Fiedler, M. Fierro, H.M. Fischer, I. Fleck, R. Folman, A. Fürtjes, D.I. Futyan, P. Gagnon, J.W. Gary, J. Gascon, S.M. Gascon-Shotkin, C. Geich-Gimbel, T. Geralis, G. Giacomelli, P. Giacomelli, V. Gibson, W.R. Gibson, D.M. Gingrich, D. Glenzinski, J. Goldberg, W. Gorn, C. Grandi, E. Gross, J. Grunhaus, M. Gruwé, G.G. Hanson, M. Hansroul, M. Hapke, C.K. Hargrove, C. Hartmann, M. Hauschild, C.M. Hawkes, R. Hawkings, R.J. Hemingway, M. Herndon, G. Herten, R.D. Heuer, M.D. Hildreth, J.C. Hill, S.J. Hillier, P.R. Hobson, A. Hocker, R.J. Homer, A.K. Honma, D. Horváth, K.R. Hossain, R. Howard, P. Hüntemeyer, P. Igo-Kemenes, D.C. Imrie, K. Ishii, F.R. Jacob, A. Jawahery, H. Jeremie, M. Jimack, A. Joly, C.R. Jones, P. Jovanovic, T.R. Junk, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, P.I. Kayal, R.K. Keeler, R.G. Kellogg, B.W. Kennedy, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, D.S. Koetke, T.P. Kokott, M. Kolrep, S. Komamiya, R.V. Kowalewski, T. Kress, P. Krieger, J. von Krogh, P. Kyberd, G.D. Lafferty, D. Lanske, J. Lauber, S.R. Lautenschlager, I. Lawson, J.G. Layter, D. Lazic, A.M. Lee, E. Lefebvre, D. Lellouch, J. Letts, L. Levinson, R. Liebisch, B. List, C. Littlewood, A.W. Lloyd, S.L. Lloyd, F.K. Loebinger, G.D. Long, M.J. Losty, J. Ludwig, D. Liu, A. Macchiolo, A. Macpherson, M. Mannelli, S. Marcellini, C. Markopoulos, A.J. Martin, J.P. Martin, G. Martinez, T. Mashimo, P. Mättig, W.J. McDonald, J. McKenna, E.A. Mckigney, T.J. McMahon, R.A. McPherson, F. Meijers, S. Menke, F.S. Merritt, H. Mes, J. Meyer, A. Michelini, S. Mihara, G. Mikenberg, D.J. Miller, R. Mir, W. Mohr, A. Montanari, T. Mori, K. Nagai, I. Nakamura, H.A. Neal, B. Nellen, R. Nisius, S.W. O'Neale, F.G. Oakham, F. Odorici, H.O. Ogren, M.J. Oreglia, S. Orito, J. Pálinkás, G. Pásztor, J.R. Pater, G.N. Patrick, J. Patt, R. Perez-Ochoa, S. Petzold, P. Pfeifenschneider, J.E. Pilcher, J. Pinfold, D.E. Plane, P. Poffenberger, B. Poli, J. Polok, M. Przybycień, C. Rembser, H. Rick, S. Robertson, S.A. Robins, N. Rodning, J.M. Roney, K. Roscoe, A.M. Rossi, Y. Rozen, K. Runge, O. Runolfsson, D.R. Rust, K. Sachs, T. Saeki, O. Sahr, W.M. Sang, E.K.G. Sarkisyan, C. Sbarra, A.D. Schaile, O. Schaile, F. Scharf, P. Scharff-Hansen, J. Schieck, B. Schmitt, S. Schmitt, A. Schöning, T. Schorner, M. Schröder, M. Schumacher, C. Schwick, W.G. Scott, R. Seuster, T.G. Shears, B.C. Shen, C.H. Shepherd-Themistocleous, P. Sherwood, G.P. Siroli, A. Sittler, A. Skuja, A.M. Smith, G.A. Snow, R. Sobie, S. Söldner-Rembold, M. Sproston, A. Stahl, K. Stephens, J. Steuerer, K. Stoll, D. Strom, R. Ströhmer, R. Tafirout, S.D. Talbot, S. Tanaka, P. Taras, S. Tarem, R. Teuscher, M. Thiergen, M.A. Thomson, E. von Törne, E. Torrence, S. Towers, I. Trigger, Z. Trócsányi, E. Tsur, A.S. Turcot, M.F. Turner-Watson, R. Van Kooten, P. Vannerem, M. Verzocchi, P. Vikas, H. Voss, F. Wäckerle, A. Wagner, C.P. Ward, D.R. Ward, P.M. Watkins, A.T. Watson, N.K. Watson, P.S. Wells, N. Wermes, J.S. White, G.W. Wilson, J.A. Wilson, T.R. Wyatt, S. Yamashita, G. Yekutieli, V. Zacek, and D. Zer-Zion
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Photon, 010308 nuclear & particles physics, Branching fraction, Astrophysics::High Energy Astrophysical Phenomena, Resonance, Lambda, 01 natural sciences, 7. Clean energy, Excited state, 0103 physical sciences, High Energy Physics::Experiment, Invariant mass, 010306 general physics, Energy (signal processing)
Abstract: The process e+e- to gamma gamma (gamma) is studied using data recorded with the OPAL detector at LEP. The data sample corresponds to a total integrated luminosity of 56.2 pb-1 taken at a centre-of-mass energy of 183 GeV. The measured cross-section agrees well with the expectation from QED. A fit to the angular distribution is used to obtain improved limits at 95% CL on the QED cut-off parameters: Lambda+ > 233 GeV and Lambda- > 265 GeV as well as a mass limit for an excited electron, M(e*) > 227 GeV assuming equal e*egamma and eegamma couplings. No evidence for resonance production is found in the invariant mass spectrum of photon pairs. Limits are obtained for the cross-section times branching ratio for a resonance decaying into two photons.
Published: 1998
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210. The local structures of Cu(II) and Zn(II) complexes of hyaluronate

Author: M Nomura, Pál Sipos, S Yamashita, Toshio Yamaguchi, H Wakita, and László Nagy
Subjects: Extended X-ray absorption fine structure, Ligand, Chemistry, Metal ions in aqueous solution, Inorganic chemistry, Biochemistry, XANES, Inorganic Chemistry, Bond length, Crystallography, chemistry.chemical_compound, Octahedron, Carboxylate, Coordination geometry
Abstract: Cu(II) and Zn(II) complexes of hyaluronate (Hy) were prepared. The local structures and binding sites were determined by Cu and Zn K-EXAFS and XANES measurements in the solid state. Both metal ions were found to be coordinated to Hy via carboxylate and oxygen atoms and probably O-1. The NH group of the acetamido moiety does not take part in the complexation. Analysis of the EXAFS spectra revealed that the oxygen coordination geometry around the Cu(II) ion (distorted octahedron) and the Cu–O bond length ( r eq =200 pm) in the Cu(II)–Hy complex are not very different from those in the hexaaqua Cu(II) ion (195 pm). The Zn(II)–Hy complex is tetra coordinated in a tetrahedral structure, with an average Zn-O bond length of 202 pm. The non-bonding Cu...C and Zn...C distances were determined to be 315 and 299 pm, respectively. These values and the large Debye–Waller factors indicate the macrochelate coordination mode of the ligand.
Published: 1998
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211. Investigation of CP violation in $\mathrm{B^0} \rightarrow \mathrm{J}/\psi \mathrm{K^0_S}$ decays at LEP

Author: G. W. Wilson, Richard Teuscher, A. S. Turcot, M. Hauschild, C. Markopoulos, F. Fiedler, A. Biguzzi, A. Rooke, R. Bartoldus, A. Macpherson, C. Markus, I. J. Bloodworth, J. G. Layter, H. O. Ogren, R. Kowalewski, Christoph Geich-Gimbel, Yoram Rozen, M. Foucher, R. Davis, E. H. Vokurka, M. Kolrep, K. Stephens, H. M. Fischer, R. Howard, J. S. White, Gideon Alexander, Junichi Kanzaki, D. Karlen, M. Schumacher, E. Lefebvre, Paolo Capiluppi, P. G. Estabrooks, R. K. Keeler, A. Michelini, Vakhtang Kartvelishvili, P. Gagnon, F. Odorici, M. Fierro, V. Gibson, Randall Sobie, N. K. Watson, P. M. Watkins, Daniel Lellouch, J. E. Conboy, A. Fürtjes, J. Letts, S. R. Lautenschlager, G. D. Lafferty, Stefan Schmitt, L. Brigliadori, Shoji Asai, Takehiko Mori, R. W. Springer, P. Mättig, V. Zacek, A. Sittler, T. R. Junk, H. A. Neal, Lutz Feld, G. G. Hanson, Peter Schleper, I. Trigger, O. Runolfsson, K. Sachs, Zoltan Laszlo Trocsanyi, R. L. Coxe, D. R. Ward, T. Kress, John Allison, Shlomo Dado, N. J. Oldershaw, C. Dallapiccola, J. Goldberg, Silvia Arcelli, G. Giacomelli, I. Lawson, U. Ruppel, A. Hocker, D. Chrisman, G. D. Long, Volker Blobel, M. Boutemeur, F. S. Merritt, Matthias Schröder, B. Nellen, S. Yamashita, P. Igo-Kemenes, Guenter Duckeck, A. De Roeck, K. Ishii, H. Jeremie, P. Scharff-Hansen, Claudio Grandi, P. S. Wells, M. F. Turner-Watson, Peter R Hobson, S. W. O'Neale, M. S. Dixit, Frans Meijers, Georges Azuelos, E. Tsur, Stephen Lloyd, M. Thiergen, Giora Mikenberg, Terry Richard Wyatt, S. F. Ashby, K. J. Anderson, M. Verzocchi, K. W. Bell, Ekg Sarkisyan, S. D. Bird, J. Pálinkás, S. B. Anderson, S. M. Gascon-Shotkin, P. Szymanski, R. G. Kellogg, D. Zer-Zion, S. Baumann, E. A. Mckigney, Raimund Ströhmer, P. Routenburg, P. W. Jeffreys, J. Bechtluft, J. A. McKenna, Ehud Duchovni, J. C. Hill, O. Schaile, M. Jimack, P. E.L. Clarke, M. K. Jones, J. P. Martin, W. P. Lai, H. G. Evans, A. M. Smith, Csaba Hajdu, M. J. Goodrick, I. Cohen, S. Robertson, P. Poffenberger, J. M. Roney, S. De Jong, D. I. Futyan, W. J. McDonald, Stefano Marcellini, Gregor Herten, B. C. Shen, A. D. Schaile, Gabriella Pasztor, P. Vannerem, D. Lui, Anna Macchiolo, Stan Bentvelsen, Christoph Rembser, Satoshi Mihara, J. Grunhaus, D. Axen, Ikuo Ueda, D. M. Strom, Sven Menke, A. Jawahery, N. Altekamp, H. Voss, P. Vikas, T. Kobayashi, Siegfried Bethke, A. K. Honma, K. Stoll, Matthew Evans, A. M. Rossi, G. A. Snow, C. P. Ward, D. Lanske, W. M. Sang, W. G. Scott, J. E. Pilcher, I. Nakamura, S. Söldner-Rembold, A. J. Martin, Andris Skuja, Beatrix Dienes, R. J. Barlow, S. Petzold, Sachio Komamiya, R VanKooten, Theodoros Geralis, Peter Sherwood, Erez Etzion, C. Y. Chang, C. K. Hargrove, D. Glenzinski, A. T. Watson, Tara Shears, Tetsuro Mashimo, P. Taras, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, P. A. Hart, Michael Kobel, D. J. Miller, T. P. Kokott, A. Joly, Stefan Kluth, Shlomit Tarem, Allen Mincer, Marcello Fanti, T. Saeki, Alexander Wagner, J. Ludwig, Julie Kirk, K. Runge, P. Bock, Alessandra Fanfani, N. I. Geddes, Michael Hildreth, C. Sbarra, J. Lauber, N. L. Rodning, B. Poli, W. Gorn, B. Stockhausen, Paul Kyberd, F. K. Loebinger, U. Jost, S. A. Robins, R. Mir, J. Steuerer, Ivor Fleck, R. Hawkings, Joleen Pater, A. Klier, S. D. Talbot, R. Giacomelli, A. Oh, K. Ackerstaff, D. Eatough, James Pinfold, R. Perez-Ochoa, D. G. Fong, F. G. Oakham, B. Schmitt, J. Gascon, E. L. Barberio, Paolo Giacomelli, M. Hansroul, R. J. Hemingway, B. W. Kennedy, C. Burgard, P. Jovanovic, Austin Ball, Peter Krieger, Alessandro Montanari, R. J. Homer, J. W. Gary, D. S. Koetke, O. C. Cooke, P. Pfeifenschneider, Marcello Mannelli, J. Patt, André Schöning, O. Sahr, M. A. Thomson, H. Mes, I. P. Duerdoth, S. Braibant, P. Hüntemeyer, E. K. U. Gross, M. Sproston, C. Hartmann, D. E. Plane, Stephen Hillier, G. M. Dallavalle, Reda Tafirout, Klaus Kurt Desch, E. Torrence, W. R. Gibson, T. J. McMahon, C. Couyoumtzelis, R. M. Brown, Lorne Levinson, A. Skillman, R. K. Carnegie, M. Herndon, M. Bobinski, J. A. Wilson, F. Scharf, T. Behnke, C. M. Hawkes, German Martinez, Richard Nisius, B. List, D. Lazic, Marco Cuffiani, Dave Charlton, Daniele Bonacorsi, Claire Shepherd-Themistocleous, F. Wäckerle, D. M. Gingrich, J. von Krogh, R. Bürgin, A. A. Faust, M. Gruwé, L. A. del Pozo, G. Yekutieli, Robert McPherson, Mathieu Doucet, R. D. Heuer, A. A. Carter, Ron Folman, Fabrizio Fabbri, K. Nagai, P. Utzat, D. R. Rust, Gideon Bella, J. Schieck, A. M. Lee, E. von Törne, H. J. Burckhart, Jacqueline Batley, W. Mohr, A. Posthaus, C. R. Jones, R. Lahmann, D. C. Imrie, G. P. Siroli, Otmar Biebel, Christoph Schwick, P. I. Kayal, Kiyotomo Kawagoe, Norbert Wermes, Sherry Towers, T. Kawamoto, S. Orito, K. R. Hossain, S. Betts, M. Hapke, D. E. Hutchcroft, M. J. Oreglia, J. R. Carter, and G. N. Patrick
Subjects: Physics, Nuclear physics, Particle physics, Physics and Astronomy (miscellaneous), media_common.quotation_subject, Electron–positron annihilation, Hadron, Detector, CP violation, Engineering (miscellaneous), Asymmetry, media_common, Standard Model
Abstract: An investigation of CP violation was performed using a total of 24 candidates for B0→J/ψK0SB0→J/ψKS0 decay, with a purity of about 60%. These events were selected from 4.4 million hadronic Z0Z0 decays recorded by the OPAL detector at LEP. An analysis procedure, involving techniques to reconstruct the proper decay times and tag the produced b-flavours, B0B0 or B¯0B¯0 , has been developed to allow a first direct study of the time dependent CP asymmetry that, in the Standard Model, is sin2βsin⁡2β . The result is where the first error is statistical and the second systematic. This result is used to determine probabilities for different values of sin2βsin⁡2β in the physical region from −1−1 to +1.
Published: 1998
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212. Hyperon-proton scattering experiments with a scintillating fiber detector at KEK

Author: K. Nakai, I. E. Kreslo, J. M. Lee, Masaya Ishino, A. Higashi, Masataka Iinuma, S. Yokkaichi, K. Nakazawa, Kazuhiro Yamamoto, A. Ichikawa, Akira Masaike, S. Yamashita, Satoshi Mihara, S. V. Golovkin, Y. Goto, K. Ozawa, W. M. Chung, Yoshitaka Itow, Y. M. Park, Fujio Takeutchi, K. Imai, I. S. Park, H. Funahashi, J. T. Fukuda, H. En'yo, Y. Kondo, E.N. Kozarenko, J. Arvieux, Minoru Yoshida, Masaharu Ieiri, B. Bassalleck, H. Kanda, R. Susukita, Yasuyuki Matsuda, Kwang Souk Sim, A. M. Gorin, T. Hayakawa, Norio Saito, T. Tabaru, Y. M. Shin, I. P. Petoukhov, Yongsun Kim, M. S. Chung, A. Sato, P. Tlustý, and Jung Keun Ahn
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Scintillating fiber, Hydrogen, Scattering, High Energy Physics::Phenomenology, Nuclear Theory, Detector, Hyperon, chemistry.chemical_element, Nuclear physics, chemistry, Proton scattering, High Energy Physics::Experiment, Fiber, Nuclear Experiment
Abstract: Hyperon-proton scattering is being studied at KEK in order to obtain a better understanding standing of the baryon-baryon interaction. A scintilating fiber (SCIFI) block detector has been used as a production target of hyperons as well as a target for hyperon scattering on hydrogen. The pilot experiment (E251) for Σ + p scattering has been completed, and the next experiment (E289) for Σ + p, Σ − p and Λp channels has finished its data taking and is now uder analysis.
Published: 1998
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213. Enhanced production of ΛΛ pairs near threshold in the (K-,K+) reaction on 12C

Author: Fujio Takeutchi, Masataka Iinuma, Yoshitaka Itow, Tomokazu Fukuda, S. Yamashita, A. Higashi, P. Tlustý, Y. Matsuyama, I. Nomura, J. K. Ahn, Masaharu Ieiri, Satoshi Mihara, Akira Masaike, Michiko Sekimoto, K. Imai, I. S. Park, M. S. Chung, S. Weibe, T. Iijima, Y. M. Shin, Shigeki Aoki, C. Nagoshi, Y. Goto, Minoru Yoshida, Tomoko Yoshida, R. Susukita, Yasuyuki Matsuda, Kwang Souk Sim, H. Funahashi, J.M. Leek, J.K. Ahna, Ryuichi Takashima, K. S. Chung, S. Makino, S. Yokkaichi, Norio Saito, H. En'yo, and Kenichi Yoshida
Subjects: Scattering cross-section, Physics, Nuclear and High Energy Physics, Momentum (technical analysis), Near threshold, Scintillating fiber, Atomic physics
Abstract: Enhanced production of ΛΛ pairs, above the prediction of a two-step process model, is observed near threshold (around the masses of 2.23 – 2.26 GeV/c2) in the12C(K−,K+) reaction at PK− = 1.66GeV/c using a scintillating fiber target. The differential cross section for the ΛΛ production averaged over 2.3° ≤ $$K + ≤ 14.7° in the momentum region 0.95 ≤ pK + ≤ 1.3GeV/c was found to be 7.6 ± 1.3 μb/sr, and that for the enhancement approximately 3 μb/sr.
Published: 1998
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214. Determination of the production rate of D*0 mesons and of the ratio V/(V+P) in $$Z^0 \to c\bar c$$ decays

Author: K. Ackerstaff, G. Alexander, J. Allison, N. Altekamp, K. J. Anderson, S. Anderson, S. Arcelli, S. Asai, S. F. Ashby, D. Axen, G. Azuelos, A. H. Ball, E. Barberio, R. J. Barlow, R. Bartoldus, J. R. Batley, S. Baumann, J. Bechtluft, T. Behnke, K. W. Bell, G. Bella, S. Bentvelsen, S. Bethke, S. Betts, O. Biebel, A. Biguzzi, S. D. Bird, V. Blobel, I. J. Bloodworth, M. Bobinski, P. Bock, D. Bonacorsi, M. Boutemeur, S. Braibant, L. Brigliadori, R. M. Brown, H. J. Burckhart, C. Burgard, R. Bürgin, P. Capiluppi, R. K. Carnegie, A. A. Carter, J. R.Carter, C. Y. Chang, D. G. Charlton, D. Chrisman, P. E. L. Clarke, I. Cohen, J. E. Conboy, O. C. Cooke, C. Couyoumtzelis, R. L. Coxe, M. Cuffiani, S. Dado, C. Dallapiccola, G. M. Dallavalle, R. Davis, S. De Jong, L. A. del Pozo, A. de Roeck, K. Desch, B. Dienes, M. S. Dixit, M. Doucet, E. Duchovni, G. Duckeck, I. P. Duerdoth, D. Eatough, P. G. Estabrooks, E. Etzion, H. G. Evans, M. Evans, F. Fabbri, A. Fanfani, M. Fanti, A. A. Faust, L. Feld, F. Fiedler, M. Fierro, H. M. Fischer, I. Fleck, R. Folman, D. G. Fong, M. Foucher, A. Fürtjes, D. I. Futyan, P. Gagnon, J. W. Gary, J. Gascon, S. M. Gascon-Shotkin, N. I. Geddes, C. Geich-Gimbel, T. Geralis, G. Giacomelli, P. Giacomelli, R. Giacomelli, V. Gibson, W. R. Gibson, D. M. Gingrich, D. Glenzinski, J. Goldberg, M. J. Goodrick, W. Gorn, C. Grandi, E. Gross, J. Grunhaus, M. Gruwé, C. Hajdu, G. G. Hanson, M. Hansroul, M. Hapke, C. K. Hargrove, P. A. Hart, C. Hartmann, M. Hauschild, C. M. Hawkes, R. Hawkings, R. J. Hemingway, M. Herndon, G. Herten, R. D. Heuer, M. D. Hildreth, J. C. Hill, S. J. Hillier, P. R. Hobson, A. Hocker, R. J. Homer, A. K. Honma, D. Horvath, K. R. Hossain, R. Howard, P. Hüntemeyer, D. E. Hutchcroft, P. Igo-Kemenes, D. C. Imrie, K. Ishii, A. Jawahery, P. W. Jeffreys, H. Jeremie, M. Jimack, A. Joly, C. R. Jones, M. Jones, U. Jost, P. Jovanovic, T. R. Junk, J. Kanzaki, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, P. I. Kayal, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, J. Kirk, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, D. S. Koetke, T. P. Kokott, M. Kolrep, S. Komamiya, R. V. Kowalewski, T. Kress, P. Krieger, J. von Krogh, P. Kyberd, G. D. Lafferty, R. Lahmann, W. P. Lai, D. Lanske, J. Lauber, S. R. Lautenschlager, I. Lawson, J. G. Layter, D. Lazic, A. M. Lee, E. Lefebvre, D. Lellouch, J. Letts, L. Levinson, B. List, S. L. Lloyd, F. K. Loebinger, G. D. Long, M. J. Losty, J. Ludwig, D. Lui, A. Macchiolo, A. Macpherson, M. Mannelli, S. Marcellini, C. Markopoulos, C. Markus, A. J. Martin, J. P. Martin, G. Martinez, T. Mashimo, P. Mättig, W. J. McDonald, J. McKenna, E. A. Mckigney, T. J. McMahon, R. A. McPherson, F. Meijers, S. Menke, F. S. Merritt, H. Mes, J. Meyer, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, A. Mincer, R. Mir, W. Mohr, A. Montanari, T. Mori, K. Nagai, I. Nakamura, H. A. Neal, B. Nellen, R. Nisius, S. W. O’Neale, F. G. Oakham, F. Odorici, H. O. Ogren, A. Oh, N. J. Oldershaw, M. J. Oreglia, S. Orito, J. Pálinkás, G. Pásztor, J. R. Pater, G. N. Patrick, J. Patt, R. Perez-Ochoa, S. Petzold, P. Pfeifenschneider, J. E. Pilcher, J. Pinfold, D. E. Plane, P. Poffenberger, B. Poli, A. Posthaus, C. Rembser, S. Robertson, S. A. Robins, N. Rodning, J. M. Roney, A. Rooke, A. M. Rossi, P. Routenburg, Y. Rozen, K. Runge, O. Runolfsson, U. Ruppel, D. R. Rust, K. Sachs, T. Saeki, O. Sahr, W. M. Sang, E. K. G. Sarkisyan, C. Sbarra, A. D. Schaile, O. Schaile, F. Scharf, P. Scharff-Hansen, J. Schieck, P. Schleper, B. Schmitt, S. Schmitt, A. Schöming, M. Schröder, M. Schumacher, C. Schwick, W. G. Scott, T. G. Shears, B. C. Shen, C. H. Shepherd-Themistocleous, P. Sherwood, G. P. Siroli, A. Sittler, A. Skillman, A. Skuja, A. M. Smith, G. A. Snow, R. Sobie, S. Söldner-Rembold, R. W. Springer, M. Sproston, K. Stephens, J. Steuerer, B. Stockhausen, K. Stoll, D. Strom, R. Ströhmer, P. Szymanski, R. Tafirout, S. D. Talbot, P. Taras, S. Tarem, R. Teuscher, M. Thiergen, M. A. Thomson, E. von Törne, E. Torrence, S. Towers, I. Trigger, Z. Trócsányi, E. Tsur, A. S. Turcot, M. F. Turner-Watson, I. Ueda, P. Utzat, R. Van Kooten, P. Vannerem, M. Verzocchi, P. Vikas, E. H. Vokurka, H. Voss, F. Wäckerle, A. Wagner, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wells, N. Wermes, J. S. White, G. W. Wilson, J. A. Wilson, T. R. Wyatt, S. Yamashita, G. Yekutieli, V. Zacek, and D. Zer-Zion
Subjects: Systematic error, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Nuclear physics, Pseudoscalar, Excited state, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), Production rate
Abstract: In e+e2212 collisions at centre-of-mass energies around 91 GeV, D*0 mesons have been reconstructed using data collected with the OPAL detector at LEP. The hadronisation fraction has been measured to be f(c→D*0)=0.218±0.054±0.045±0.007, where the errors correspond to the statistical and systematic errors specific to this analysis, and to systematic uncertainties from externally measured branching fractions, respectively. Together with previous OPAL measurements of the hadronisation fractions of other charmed mesons, this value is used to investigate the relative production of observed vector and pseudoscalar charmed mesons in $Z^0 \to c\bar c$ decays. The production ratio is determined to be PeffV = V/(V+P)=0.57±0.05. The relative primary production of vector and pseudoscalar mesons, Pvrim, is studied in the context of the production and decay of orbitally excited charmed resonances. The first measurement of the inclusive Ds*+ production rate in hadronic Z0 decays is presented.
Published: 1998
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215. Bose-Einstein correlations of three charged pions in hadronic Z $^{\bf 0}$ decays

Author: Erez Etzion, Stefan Kluth, Shlomit Tarem, S. A. Robins, T. Schorner, J. Grunhaus, Tara Shears, R. Liebisch, K. Ackerstaff, Sachio Komamiya, Theodoros Geralis, A. T. Watson, T. P. Kokott, T. Saeki, Alessandra Fanfani, G. Yekutieli, Otmar Biebel, G. G. Hanson, W. R. Gibson, H. M. Fischer, M. Przybycień, M. F. Turner-Watson, Peter R Hobson, J. Goldberg, D. Zer-Zion, M. Fierro, B. Nellen, S. R. Lautenschlager, A. A. Carter, Ron Folman, G. Giacomelli, I. Lawson, M. Boutemeur, F. S. Merritt, H. G. Evans, Gideon Bella, H. J. Burckhart, I. Cohen, Christoph Rembser, A. De Roeck, M. Kobel, O. Runolfsson, M. S. Dixit, Frans Meijers, J. Letts, R. M. Brown, Lorne Levinson, Matthias Schröder, A. W. Lloyd, P. I. Kayal, P. Gagnon, W. M. Sang, Jacqueline Batley, Claudio Grandi, M. Thiergen, J. Bechtluft, J. A. McKenna, Satoshi Mihara, Ekg Sarkisyan, P. E.L. Clarke, S. Yamashita, Kiyotomo Kawagoe, J. P. Martin, Ehud Duchovni, K. Sachs, K. Roscoe, J. von Krogh, M. Hauschild, C. Markopoulos, Norbert Wermes, Sherry Towers, S. De Jong, A. Sittler, Shlomo Dado, T. Kawamoto, Zoltan Laszlo Trocsanyi, P. Vikas, M. Jimack, Claire Shepherd-Themistocleous, P. Igo-Kemenes, P. G. Estabrooks, N. K. Watson, M. Gruwé, Reda Tafirout, Klaus Kurt Desch, A. J. Martin, H. Rick, R. Bartoldus, G. W. Wilson, A. Joly, D. Lanske, S. Orito, L. A. del Pozo, Claudia Ciocca, K. Ishii, H. Jeremie, A. Michelini, E. Torrence, Achim Stahl, E. Clay, H. O. Ogren, S. Betts, M. Hapke, Giora Mikenberg, Satoshi Tanaka, T. Kobayashi, P. M. Watkins, Georges Azuelos, K. Stephens, S. D. Bird, C. Sbarra, F. R. Jacob, E. Tsur, T. J. McMahon, C. Couyoumtzelis, J. Dubbert, R. K. Carnegie, M. Herndon, C. K. Hargrove, K. Nagai, Michael Hildreth, M. Bobinski, J. A. Wilson, S. F. Ashby, K. R. Hossain, N. L. Rodning, J. Böhme, A. D. Schaile, Gabriella Pasztor, C. Hartmann, Christoph Geich-Gimbel, P. S. Wells, Vakhtang Kartvelishvili, P. Vannerem, M. Verzocchi, K. W. Bell, J. Pálinkás, J. C. Hill, O. Schaile, B. Poli, D. Axen, A. Jawahery, Stefan Schmitt, C. Littlewood, A. Biguzzi, D. E. Plane, R. L. Coxe, Silvia Arcelli, M. J. Oreglia, Stephen Hillier, D. Lui, Paul Kyberd, F. K. Loebinger, J. G. Layter, J. E. Conboy, G. M. Dallavalle, A. Fürtjes, James Pinfold, R. Perez-Ochoa, R. Seuster, W. J. McDonald, B. C. Shen, V. Gibson, D. Lazic, G. A. Snow, C. P. Ward, A. Hocker, Terry Richard Wyatt, D. R. Rust, C. R. Jones, J. Steuerer, Ivor Fleck, J. R. Carter, G. N. Patrick, Siegfried Bethke, A. K. Honma, W. G. Scott, Randall Sobie, S. M. Gascon-Shotkin, S. Söldner-Rembold, S. Baumann, S. Robertson, Joleen Pater, D. Chrisman, G. D. Long, Peter Sherwood, G. D. Lafferty, Gregor Herten, T. R. Junk, S. W. O'Neale, I. Nakamura, A. Klier, E. A. Mckigney, Volker Blobel, Alexander Wagner, I. Trigger, K. J. Anderson, Sven Menke, A. M. Rossi, J. Ludwig, Raimund Ströhmer, D. R. Ward, N. Altekamp, H. Voss, K. Runge, T. Kress, P. Bock, D. Glenzinski, Dezso Horvath, M. J. Losty, J. M. Roney, J. Lauber, Stephen Lloyd, J. E. Pilcher, Jean-Arcady Meyer, Dave Charlton, D. I. Futyan, R. J. Barlow, A. M. Lee, D. J. Miller, J. Gascon, P. Poffenberger, D. C. Imrie, John Allison, D. M. Strom, E. von Törne, R. Bürgin, S. D. Talbot, Guenter Duckeck, Paolo Giacomelli, R. Kowalewski, D. Eatough, G. P. Siroli, Shoji Asai, M. Hansroul, Christoph Schwick, Beatrix Dienes, C. Burgard, R. G. Kellogg, M. Fanti, Gideon Alexander, R. J. Homer, Paolo Capiluppi, S. B. Anderson, Daniel Lellouch, R. Mir, C. Y. Chang, R. Hawkings, A. Macpherson, Stefano Marcellini, Richard Keeler, O. C. Cooke, J. W. Gary, Takehiko Mori, P. Taras, P. Pfeifenschneider, Robert McPherson, R. Howard, D. S. Koetke, J. S. White, Mathieu Doucet, J. Patt, André Schöning, P. Mättig, R. D. Heuer, Fabrizio Fabbri, Marcello Mannelli, O. Sahr, Stan Bentvelsen, R. Van Kooten, K. Stoll, V. Zacek, F. Wäckerle, Andris Skuja, D. M. Gingrich, S. Petzold, Tetsuro Mashimo, Richard Teuscher, A. S. Turcot, F. Fiedler, F. G. Oakham, W. Gorn, B. Schmitt, E. L. Barberio, M. Kolrep, I. J. Bloodworth, P. Scharff-Hansen, R. J. Hemingway, B. W. Kennedy, P. Jovanovic, Austin Ball, Yoram Rozen, Peter Krieger, Alessandro Montanari, A. M. Smith, J. Polok, D. Karlen, A. A. Faust, T. Behnke, A. Macchiolo, C. M. Hawkes, Richard Nisius, B. List, Marco Cuffiani, H. Mes, I. P. Duerdoth, S. Braibant, P. Hüntemeyer, R. Davis, P. G. Bright-Thomas, M. Schumacher, E. Lefebvre, F. Odorici, H. A. Neal, F. Scharf, German Martinez, M. A. Thomson, E. K. U. Gross, M. Sproston, J. Schieck, and W. Mohr
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Bose–Einstein correlations, Lambda, Nuclear physics, Near threshold, Pion, Coulomb, High Energy Physics::Experiment, Nuclear Experiment, Coulomb effect, Engineering (miscellaneous)
Abstract: Bose-Einstein Correlations (BEC) of three identical charged pions were studied in $4 \times 10^6$ hadronic ${\rm Z}^0$ decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. A significant genuine three-pion BEC enhancement near threshold was observed having an emitter source radius of $r_3 = 0.580 \pm 0.004 \mbox{ (stat.)} \pm 0.029 \mbox{ (syst.)} \mbox{ fm}$ and a strength of $\lambda_3 = 0.504 \pm 0.010 \mbox{ (stat.)}\pm 0.041 \mbox{ (syst.)}$ . The Coulomb correction was found to increase the $\lambda_3$ value by $\sim $ 9% and to reduce $r_3$ by $\sim $ 6%. The measured $\lambda_3$ corresponds to a value of $0.707 \pm 0.014 \mbox{ (stat.)} \pm 0.078 \mbox{ (syst.)}$ when one takes into account the three-pion sample purity. A relation between the two-pion and the three-pion source parameters is discussed.
Published: 1998
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216. An upper limit on the anomalous magnetic moment of the τ lepton

Author: K. Ackerstaff, G. Alexander, J. Allison, N. Altekamp, K.J. Anderson, S. Anderson, S. Arcelli, S. Asai, S.F. Ashby, D. Axen, G. Azuelos, A.H. Ball, E. Barberio, R.J. Barlow, R. Bartoldus, J.R. Batley, S. Baumann, J. Bechtluft, T. Behnke, K.W. Bell, G. Bella, S. Bentvelsen, S. Bethke, S. Betts, O. Biebel, A. Biguzzi, S.D. Bird, V. Blobel, I.J. Bloodworth, M. Bobinski, P. Bock, D. Bonacorsi, M. Boutemeur, S. Braibant, L. Brigliadori, R.M. Brown, H.J. Burckhart, C. Burgard, R. Bürgin, P. Capiluppi, R.K. Carnegie, A.A. Carter, J.R. Carter, C.Y. Chang, D.G. Charlton, D. Chrisman, P.E.L. Clarke, I. Cohen, J.E. Conboy, O.C. Cooke, C. Couyoumtzelis, R.L. Coxe, M. Cuffiani, S. Dado, C. Dallapiccola, G.M. Dallavalle, R. Davis, S. De Jong, L.A. del Pozo, A. de Roeck, K. Desch, B. Dienes, M.S. Dixit, M. Doucet, E. Duchovni, G. Duckeck, I.P. Duerdoth, D. Eatough, P.G. Estabrooks, E. Etzion, H.G. Evans, M. Evans, F. Fabbri, A. Fanfani, M. Fanti, A.A. Faust, L. Feld, F. Fiedler, M. Fierro, H.M. Fischer, I. Fleck, R. Folman, D.G. Fong, M. Foucher, A. Fürtjes, D.I. Futyan, P. Gagnon, J.W. Gary, J. Gascon, S.M. Gascon-Shotkin, N.I. Geddes, C. Geich-Gimbel, T. Geralis, G. Giacomelli, P. Giacomelli, R. Giacomelli, V. Gibson, W.R. Gibson, D.M. Gingrich, D. Glenzinski, J. Goldberg, M.J. Goodrick, W. Gorn, C. Grandi, E. Gross, J. Grunhaus, M. Gruwé, C. Hajdu, G.G. Hanson, M. Hansroul, M. Hapke, C.K. Hargrove, P.A. Hart, C. Hartmann, M. Hauschild, C.M. Hawkes, R. Hawkings, R.J. Hemingway, M. Herndon, G. Herten, R.D. Heuer, M.D. Hildreth, J.C. Hill, S.J. Hillier, P.R. Hobson, A. Hocker, R.J. Homer, A.K. Honma, D. Horváth, K.R. Hossain, R. Howard, P. Hüntemeyer, D.E. Hutchcroft, P. Igo-Kemenes, D.C. Imrie, K. Ishii, A. Jawahery, P.W. Jeffreys, H. Jeremie, M. Jimack, A. Joly, C.R. Jones, M. Jones, U. Jost, P. Jovanovic, T.R. Junk, J. Kanzaki, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, P.I. Kayal, R.K. Keeler, R.G. Kellogg, B.W. Kennedy, J. Kirk, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, D.S. Koetke, T.P. Kokott, M. Kolrep, S. Komamiya, R.V. Kowalewski, T. Kress, P. Krieger, J. von Krogh, P. Kyberd, G.D. Lafferty, R. Lahmann, W.P. Lai, D. Lanske, J. Lauber, S.R. Lautenschlager, I. Lawson, J.G. Layter, D. Lazic, A.M. Lee, E. Lefebvre, D. Lellouch, J. Letts, L. Levinson, B. List, S.L. Lloyd, F.K. Loebinger, G.D. Long, M.J. Losty, J. Ludwig, D. Lui, A. Macchiolo, A. Macpherson, M. Mannelli, S. Marcellini, C. Markopoulos, C. Markus, A.J. Martin, J.P. Martin, G. Martinez, T. Mashimo, P. Mättig, W.J. McDonald, J. McKenna, E.A. Mckigney, T.J. McMahon, R.A. McPherson, F. Meijers, S. Menke, F.S. Merritt, H. Mes, J. Meyer, A. Michelini, S. Mihara, G. Mikenberg, D.J. Miller, A. Mincer, R. Mir, W. Mohr, A. Montanari, T. Mori, K. Nagai, I. Nakamura, H.A. Neal, B. Nellen, R. Nisius, S.W. O'Neale, F.G. Oakham, F. Odorici, H.O. Ogren, A. Oh, N.J. Oldershaw, M.J. Oreglia, S. Orito, J. Pálinkás, G. Pásztor, J.R. Pater, G.N. Patrick, J. Patt, R. Perez-Ochoa, S. Petzold, P. Pfeifenschneider, J.E. Pilcher, J. Pinfold, D.E. Plane, P. Poffenberger, B. Poli, A. Posthaus, C. Rembser, S. Robertson, S.A. Robins, N. Rodning, J.M. Roney, A. Rooke, A.M. Rossi, P. Routenburg, Y. Rozen, K. Runge, O. Runolfsson, U. Ruppel, D.R. Rust, K. Sachs, T. Saeki, O. Sahr, W.M. Sang, E.K.G. Sarkisyan, C. Sbarra, A.D. Schaile, O. Schaile, F. Scharf, P. Scharff-Hansen, J. Schieck, P. Schleper, B. Schmitt, S. Schmitt, A. Schöning, M. Schröder, M. Schumacher, C. Schwick, W.G. Scott, T.G. Shears, B.C. Shen, C.H. Shepherd-Themistocleous, P. Sherwood, R.P.B. Sieberg, G.P. Siroli, A. Sittler, A. Skillman, A. Skuja, A.M. Smith, G.A. Snow, R. Sobie, S. Söldner-Rembold, R.W. Springer, M. Sproston, K. Stephens, J. Steuerer, B. Stockhausen, K. Stoll, D. Strom, R. Ströhmer, P. Szymanski, R. Tafirout, S.D. Talbot, P. Taras, S. Tarem, R. Teuscher, M. Thiergen, M.A. Thomson, E. von Törne, E. Torrence, S. Towers, I. Trigger, Z. Trócsányi, E. Tsur, A.S. Turcot, M.F. Turner-Watson, I. Ueda, P. Utzat, R. Van Kooten, P. Vannerem, M. Verzocchi, P. Vikas, E.H. Vokurka, H. Voss, F. Wäckerle, A. Wagner, C.P. Ward, D.R. Ward, P.M. Watkins, A.T. Watson, N.K. Watson, P.S. Wells, N. Wermes, J.S. White, G.W. Wilson, J.A. Wilson, T.R. Wyatt, S. Yamashita, G. Yekutieli, V. Zacek, and D. Zer-Zion
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Anomalous magnetic dipole moment, 010308 nuclear & particles physics, Form factor (quantum field theory), 01 natural sciences, High Energy Physics - Experiment, Dipole, 0103 physical sciences, Magnetic form factor, Radiative transfer, Vertex (curve), High Energy Physics::Experiment, Production (computer science), 010306 general physics, Particle Physics - Experiment, Lepton
Abstract: Using radiative Z^0 -> \tau^+ \tau^- \gamma events collected with the OPAL detector at LEP at \sqrt{s}= M_Z during 1990-95, a direct study of the electromagnetic current at the \tau\gamma vertex has been performed in terms of the anomalous magnetic form factor F_2 of the \tau lepton. The analysis is based on a data sample of 1429 e^+ e^- -> \tau^+ \tau^- \gamma events which are examined for a deviation from the expectation with F_2 = 0. From the non-observation of anomalous \tau^+ \tau^- \gamma production a limit of -0.068 < F_2 < 0.065 is obtained. This can also be interpreted as a limit on the electric dipole form factor F_3 as -3.8 x 10^-16 e-cm < eF_3 < 3.6 x 10^-16 e-cm. The above ranges are valid at the 95% confidence level., Comment: 20 pages, LaTeX, uses a4p.sty, 4 eps figures included, submitted to Phys. Lett. B
Published: 1998
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217. Search for an excess in the production of four-jet events from e+e− collisions at =130–184 GeV

Author: K. Ackerstaff, G. Alexander, J. Allison, N. Altekamp, K.J. Anderson, S. Anderson, S. Arcelli, S. Asai, S.F. Ashby, D. Axen, G. Azuelos, A.H. Ball, E. Barberio, R.J. Barlow, R. Bartoldus, J.R. Batley, S. Baumann, J. Bechtluft, T. Behnke, K.W. Bell, G. Bella, S. Bentvelsen, S. Bethke, S. Betts, O. Biebel, A. Biguzzi, S.D. Bird, V. Blobel, I.J. Bloodworth, M. Bobinski, P. Bock, D. Bonacorsi, M. Boutemeur, S. Braibant, L. Brigliadori, R.M. Brown, H.J. Burckhart, C. Burgard, R. Bürgin, P. Capiluppi, R.K. Carnegie, A.A. Carter, J.R. Carter, C.Y. Chang, D.G. Charlton, D. Chrisman, P.E.L. Clarke, I. Cohen, J.E. Conboy, O.C. Cooke, C. Couyoumtzelis, R.L. Coxe, M. Cuffiani, S. Dado, C. Dallapiccola, G.M. Dallavalle, R. Davis, S. De Jong, L.A. del Pozo, A. de Roeck, K. Desch, B. Dienes, M.S. Dixit, M. Doucet, E. Duchovni, G. Duckeck, I.P. Duerdoth, D. Eatough, P.G. Estabrooks, E. Etzion, H.G. Evans, M. Evans, F. Fabbri, A. Fanfani, M. Fanti, A.A. Faust, L. Feld, F. Fiedler, M. Fierro, H.M. Fischer, I. Fleck, R. Folman, D.G. Fong, M. Foucher, A. Fürtjes, D.I. Futyan, P. Gagnon, J.W. Gary, J. Gascon, S.M. Gascon-Shotkin, N.I. Geddes, C. Geich-Gimbel, T. Geralis, G. Giacomelli, P. Giacomelli, R. Giacomelli, V. Gibson, W.R. Gibson, D.M. Gingrich, D. Glenzinski, J. Goldberg, M.J. Goodrick, W. Gorn, C. Grandi, E. Gross, J. Grunhaus, M. Gruwé, C. Hajdu, G.G. Hanson, M. Hansroul, M. Hapke, C.K. Hargrove, P.A. Hart, C. Hartmann, M. Hauschild, C.M. Hawkes, R. Hawkings, R.J. Hemingway, M. Herndon, G. Herten, R.D. Heuer, M.D. Hildreth, J.C. Hill, S.J. Hillier, P.R. Hobson, A. Hocker, R.J. Homer, A.K. Honma, D. Horváth, K.R. Hossain, R. Howard, P. Hüntemeyer, D.E. Hutchcroft, P. Igo-Kemenes, D.C. Imrie, K. Ishii, A. Jawahery, P.W. Jeffreys, H. Jeremie, M. Jimack, A. Joly, C.R. Jones, M. Jones, U. Jost, P. Jovanovic, T.R. Junk, J. Kanzaki, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, P.I. Kayal, R.K. Keeler, R.G. Kellogg, B.W. Kennedy, J. Kirk, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, D.S. Koetke, T.P. Kokott, M. Kolrep, S. Komamiya, R.V. Kowalewski, T. Kress, P. Krieger, J. von Krogh, P. Kyberd, G.D. Lafferty, R. Lahmann, W.P. Lai, D. Lanske, J. Lauber, S.R. Lautenschlager, I. Lawson, J.G. Layter, D. Lazic, A.M. Lee, E. Lefebvre, D. Lellouch, J. Letts, L. Levinson, B. List, S.L. Lloyd, F.K. Loebinger, G.D. Long, M.J. Losty, J. Ludwig, D. Lui, A. Macchiolo, A. Macpherson, M. Mannelli, S. Marcellini, C. Markopoulos, C. Markus, A.J. Martin, J.P. Martin, G. Martinez, T. Mashimo, P. Mättig, W.J. McDonald, J. McKenna, E.A. Mckigney, T.J. McMahon, R.A. McPherson, F. Meijers, S. Menke, F.S. Merritt, H. Mes, J. Meyer, A. Michelini, S. Mihara, G. Mikenberg, D.J. Miller, A. Mincer, R. Mir, W. Mohr, A. Montanari, T. Mori, K. Nagai, I. Nakamura, H.A. Neal, B. Nellen, R. Nisius, S.W. O'Neale, F.G. Oakham, F. Odorici, H.O. Ogren, A. Oh, N.J. Oldershaw, M.J. Oreglia, S. Orito, J. Pálinkás, G. Pásztor, J.R. Pater, G.N. Patrick, J. Patt, R. Perez-Ochoa, S. Petzold, P. Pfeifenschneider, J.E. Pilcher, J. Pinfold, D.E. Plane, P. Poffenberger, B. Poli, A. Posthaus, C. Rembser, S. Robertson, S.A. Robins, N. Rodning, J.M. Roney, A. Rooke, A.M. Rossi, P. Routenburg, Y. Rozen, K. Runge, O. Runolfsson, U. Ruppel, D.R. Rust, K. Sachs, T. Saeki, O. Sahr, W.M. Sang, E.K.G. Sarkisyan, C. Sbarra, A.D. Schaile, O. Schaile, F. Scharf, P. Scharff-Hansen, J. Schieck, P. Schleper, B. Schmitt, S. Schmitt, A. Schöning, M. Schröder, M. Schumacher, C. Schwick, W.G. Scott, T.G. Shears, B.C. Shen, C.H. Shepherd-Themistocleous, P. Sherwood, G.P. Siroli, A. Sittler, A. Skillman, A. Skuja, A.M. Smith, G.A. Snow, R. Sobie, S. Söldner-Rembold, R.W. Springer, M. Sproston, K. Stephens, J. Steuerer, B. Stockhausen, K. Stoll, D. Strom, R. Ströhmer, P. Szymanski, R. Tafirout, S.D. Talbot, P. Taras, S. Tarem, R. Teuscher, M. Thiergen, M.A. Thomson, E. von Törne, E. Torrence, S. Towers, I. Trigger, Z. Trócsányi, E. Tsur, A.S. Turcot, M.F. Turner-Watson, I. Ueda, P. Utzat, R. Van Kooten, P. Vannerem, M. Verzocchi, P. Vikas, E.H. Vokurka, H. Voss, F. Wäckerle, A. Wagner, C.P. Ward, D.R. Ward, P.M. Watkins, A.T. Watson, N.K. Watson, P.S. Wells, N. Wermes, J.S. White, G.W. Wilson, J.A. Wilson, T.R. Wyatt, S. Yamashita, G. Yekutieli, V. Zacek, and D. Zer-Zion
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Aleph, 010308 nuclear & particles physics, FOS: Physical sciences, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, Standard Model, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), 010306 general physics, Particle Physics - Experiment
Abstract: Events with four distinct jets from e^+e^- collisions, collected by the OPAL detector at centre-of-mass energies between 130 and 184 GeV, are analysed for a peak in the sum of dijet masses. This search is motivated by the ALEPH Collaboration's observation of a clear excess of events with dijet mass sums close to 105 GeV in data taken at centre-of-mass energies of 130 and 136 GeV in 1995. We have observed no significant excess of four-jet events compared to the Standard Model expectation for any dijet mass sum at any energy. Our observation is inconsistent with the excess observed by ALEPH in 1995. Upper limits are determined on the production cross-section as a function of the dijet mass sum., Comment: 24 pages, LaTeX, uses a4p.sty, 5 eps figures included, submitted to Physics Letters B
Published: 1998
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218. Production of ${\rm f_0}(980)$ , ${\rm f}_2(1270)$ and $\phi(1020)$ in hadronic ${\rm Z}^0$ decay

Author: S. Betts, S. Yamashita, M. Hapke, J. Letts, P. Igo-Kemenes, D. E. Hutchcroft, K. Ishii, H. Jeremie, K. Sachs, A. Biguzzi, A. Rooke, J. G. Layter, Paolo Giacomelli, P. S. Wells, M. J. Oreglia, Shlomo Dado, O. Schaile, M. Hansroul, S. R. Lautenschlager, Terry Richard Wyatt, R. Lahmann, D. C. Imrie, L. Brigliadori, Sven Menke, Gideon Bella, T. Behnke, J. R. Carter, C. Burgard, G. N. Patrick, Stefan Schmitt, C. Hartmann, D. E. Plane, Stephen Hillier, G. M. Dallavalle, H. J. Burckhart, Jacqueline Batley, H. M. Fischer, R. J. Hemingway, Giora Mikenberg, S. F. Ashby, R. W. Springer, A. Macpherson, G. P. Siroli, Otmar Biebel, R. J. Homer, B. W. Kennedy, Christoph Schwick, A. Macchiolo, Tara Shears, P. Jovanovic, C. R. Jones, W. M. Sang, Austin Ball, O. Runolfsson, N. J. Oldershaw, J. Lauber, C. M. Hawkes, Peter Krieger, P. A. Hart, Kiyotomo Kawagoe, S. W. O'Neale, Georges Azuelos, Shoji Asai, G. G. Hanson, G. Yekutieli, E. Tsur, M. Boutemeur, F. S. Merritt, K. J. Anderson, M. Verzocchi, Richard Nisius, Alessandro Montanari, Richard Teuscher, A. D. Schaile, K. W. Bell, P. I. Kayal, J. Pálinkás, Gabriella Pasztor, H. A. Neal, R. Howard, M. F. Turner-Watson, J. S. White, A. S. Turcot, F. Fiedler, G. Giacomelli, J. C. Hill, B. List, I. Lawson, Daniel Lellouch, C. Y. Chang, W. J. McDonald, Dave Charlton, A. De Roeck, P. Vannerem, U. Ruppel, A. A. Carter, Marco Cuffiani, Norbert Wermes, B. C. Shen, Peter R Hobson, H. Mes, Ron Folman, P. Taras, G. W. Wilson, D. Zer-Zion, D. Lui, K. R. Hossain, R. Bürgin, Michael Kobel, Siegfried Bethke, A. K. Honma, M. Hauschild, C. Markopoulos, U. Jost, R. Mir, R. Hawkings, M. S. Dixit, I. P. Duerdoth, W. G. Scott, Sherry Towers, I. Nakamura, C. Markus, Frans Meijers, T. Kawamoto, Claudio Grandi, S. Braibant, P. Utzat, P. Routenburg, Matthias Schröder, E. H. Vokurka, P. E.L. Clarke, J. Grunhaus, Allen Mincer, M. K. Jones, Erez Etzion, Stefan Kluth, Shlomit Tarem, Takehiko Mori, P. Mättig, J. P. Martin, G. A. Snow, C. P. Ward, A. Joly, V. Zacek, D. Glenzinski, Dezso Horvath, M. J. Losty, S. Robertson, Julie Kirk, M. Thiergen, Gregor Herten, Jean-Arcady Meyer, Ikuo Ueda, D. M. Strom, S. Orito, J. Bechtluft, Raimund Ströhmer, Daniele Bonacorsi, R. L. Coxe, S. De Jong, P. G. Estabrooks, R. K. Keeler, N. K. Watson, P. M. Watkins, S. D. Talbot, F. G. Oakham, B. Schmitt, O. C. Cooke, Claire Shepherd-Themistocleous, P. Pfeifenschneider, M. Kolrep, E. L. Barberio, J. A. McKenna, J. E. Pilcher, S. Söldner-Rembold, P. Hüntemeyer, C. Sbarra, D. Eatough, Sachio Komamiya, C. Dallapiccola, P. Poffenberger, Theodoros Geralis, A. T. Watson, Randall Sobie, G. D. Lafferty, J. Patt, André Schöning, J. von Krogh, A. A. Faust, S. A. Robins, O. Sahr, N. Altekamp, H. Voss, T. P. Kokott, M. Gruwé, R. J. Barlow, T. Saeki, D. J. Miller, R. Bartoldus, A. J. Martin, R. Davis, L. A. del Pozo, B. Stockhausen, Paul Kyberd, F. K. Loebinger, Alessandra Fanfani, K. Ackerstaff, P. Scharff-Hansen, T. J. McMahon, Beatrix Dienes, I. J. Bloodworth, A. Hocker, H. O. Ogren, J. Steuerer, C. Couyoumtzelis, Ivor Fleck, Silvia Arcelli, M. Schumacher, E. Lefebvre, S. M. Gascon-Shotkin, R. K. Carnegie, Guenter Duckeck, Satoshi Mihara, Joleen Pater, M. Herndon, Christoph Geich-Gimbel, A. Klier, M. Bobinski, J. A. Wilson, C. K. Hargrove, R. Giacomelli, A. Oh, F. Odorici, M. Fierro, P. Gagnon, S. Baumann, Ekg Sarkisyan, Yoram Rozen, S. B. Anderson, M. Foucher, D. Chrisman, G. D. Long, D. Lazic, Matthew Evans, A. M. Rossi, John Allison, P. Szymanski, E. A. Mckigney, P. W. Jeffreys, W. P. Lai, Vakhtang Kartvelishvili, K. Stephens, Junichi Kanzaki, R. G. Kellogg, J. E. Conboy, A. Fürtjes, Csaba Hajdu, D. Karlen, A. Sittler, Stefano Marcellini, J. Goldberg, J. M. Roney, Stan Bentvelsen, Lutz Feld, N. I. Geddes, Peter Schleper, Michael Hildreth, V. Gibson, N. L. Rodning, Zoltan Laszlo Trocsanyi, B. Poli, D. I. Futyan, B. Nellen, Volker Blobel, T. R. Junk, P. Vikas, D. Lanske, I. Trigger, D. R. Ward, T. Kress, A. M. Smith, S. D. Bird, D. Axen, A. Jawahery, H. G. Evans, Peter Sherwood, M. J. Goodrick, I. Cohen, Christoph Rembser, Alexander Wagner, J. Ludwig, K. Runge, P. Bock, Stephen Lloyd, James Pinfold, R. Perez-Ochoa, D. G. Fong, J. Gascon, Ehud Duchovni, M. Jimack, J. W. Gary, D. S. Koetke, A. Michelini, Marcello Mannelli, K. Stoll, Andris Skuja, T. Kobayashi, S. Petzold, Tetsuro Mashimo, W. Gorn, R. Kowalewski, R. Van Kooten, Gideon Alexander, Paolo Capiluppi, F. Wäckerle, D. M. Gingrich, M. Fanti, W. R. Gibson, Robert McPherson, Mathieu Doucet, R. M. Brown, Lorne Levinson, A. Skillman, R. D. Heuer, Reda Tafirout, Klaus Kurt Desch, Fabrizio Fabbri, E. Torrence, K. Nagai, D. R. Rust, A. M. Lee, E. von Törne, F. Scharf, German Martinez, M. A. Thomson, E. K. U. Gross, M. Sproston, J. Schieck, W. Mohr, and A. Posthaus
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Hadron, Fragmentation function, High Energy Physics::Experiment, Channel analysis, Scalar meson, Engineering (miscellaneous)
Abstract: Inclusive production of the ${\rm f_0}(980)$, ${\rm f}_2(1270)$ and $\phi(1020)$ resonances has been studied in a sample of 4.3 million hadronic ${\rm Z}^0$ decays from the OPAL experiment at LEP. A coupled channel analysis has been used for the ${\rm f}_0$ in simultaneous fits to the resonances in inclusive $\pi^+\pi^-$ and ${\rm K^+K^-}$ mass spectra. Fragmentation functions are reported for the three states. Total inclusive rates are measured to be $0.141 \pm 0.007 \pm 0.011$${\rm f}_0$, $0.155\pm0.011\pm0.018$${\rm f}_2$ and $0.091\pm0.002\pm0.003$$\phi$ mesons per hadronic ${\rm Z}^0$ decay. The production properties of the ${\rm f}_0$, including those in three-jet events, are compared with those of the ${\rm f}_2$ and $\phi$, and with the Lund string model of hadron production. All measurements are consistent with the hypothesis that the ${\rm f_0}(980)$ is a conventional ${\rm q\bar q}$ scalar meson.
Published: 1998
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219. Search for anomalous production of photonic events with missing energy in ${\rm e^+e^-}$ collisions at $\sqrt{s} = 130$ –172 GeV

Author: A. Klier, P. Routenburg, C. Dallapiccola, M. Hauschild, C. Markopoulos, C. Markus, G. T. Jones, E. H. Vokurka, N. Altekamp, H. Voss, S. Orito, W. Gorn, S. R. Lautenschlager, H. A. Neal, R. J. Barlow, D. J. Miller, Stefan Kluth, E. K.G. Sarkisyan, U. Ruppel, M. R. Ingram, J. Lauber, S. Betts, M. Hapke, W. J. McDonald, A. Sittler, P. G. Estabrooks, O. Runolfsson, G. W. Wilson, V. Zacek, D. E. Hutchcroft, N. J. Oldershaw, Gideon Bella, R. Howard, U. Jost, N. K. Watson, S. D. Talbot, G. Yekutieli, P. Scharff-Hansen, A. D. Schaile, H. J. Burckhart, Jacqueline Batley, C. Beeston, M. J. Oreglia, W. M. Sang, Gregor Herten, B. Wilkens, A. Biguzzi, Raimund Ströhmer, N. Rodning, P. M. Watkins, A. Rooke, J. E. Pilcher, Gabriella Pasztor, Claudio Grandi, J. Grunhaus, D. C. Imrie, P. R. Hobson, J. G. Layter, I. Nakamura, A. K. Honma, R. Van Kooten, F. G. Oakham, D. Eatough, B. Schmitt, E. L. Barberio, R. Bartoldus, D. Lui, B. Nellen, A. M. Smith, A. Oh, Paolo Capiluppi, J-P. Meyer, John Allison, Richard Keeler, R. J. Hemingway, H. O. Ogren, L. Levinson, G. D. Long, M. Schumacher, K. Stephens, G. A. Snow, C. P. Ward, E. Lefebvre, R. L. Coxe, Christoph Geich-Gimbel, J. R. Carter, Georges Azuelos, C. R. Jones, G. Mikenberg, T. Kawamoto, Stefan Schmitt, A. Macpherson, B. W. Kennedy, P. Jovanovic, R. Lahmann, Austin Ball, S. Söldner-Rembold, F. Odorici, A. Hocker, G. N. Patrick, Peter Krieger, R. G. Kellogg, P. E.L. Clarke, Alessandro Montanari, R. Davis, Silvia Arcelli, Hans-Christian Schultz-Coulon, Csaba Hajdu, D. Chrisman, R. Perez-Ochoa, G. D. Lafferty, M. Verzocchi, K. W. Bell, Otmar Biebel, H. G. Evans, M. J. Goodrick, P. Igo-Kemenes, N. I. Geddes, Michael Hildreth, P. Gagnon, M. K. Jones, J. P. Martin, J. Letts, Christoph Rembser, E. Tsur, S. Komamiya, V. Gibson, J. S. White, Stefano Marcellini, C. Hartmann, D. G. Fong, J. Gascon, D. E. Plane, S. Dado, J. Pinfold, J. C. Hill, D. Lazic, T. J. McMahon, C. Couyoumtzelis, P. Mättig, S. Asai, Vakhtang Kartvelishvili, G. P. Siroli, S. De Jong, Christoph Schwick, K. Ackerstaff, F. Fiedler, F. Wäckerle, L. Brigliadori, S. Baumann, H. Jeremie, Stephen Lloyd, Stephen Hillier, R. K. Carnegie, E. Gross, Dave Charlton, B. Poli, F. Scharf, German Martinez, I. J. Bloodworth, Peter Schleper, K. Kawagoe, J. E. Conboy, A. Fürtjes, K. Sachs, J. Goldberg, E. A. Mckigney, S. Tarem, B. C. Shen, G. M. Dallavalle, T. R. Junk, J. M. Roney, M. Fierro, J. E.G. Edwards, R. Bürgin, H. M. Fischer, A. N. Bell, D. M. Gingrich, M. Herndon, B. Dienes, I. Trigger, A. Joly, J. W. Gary, W. P. Lai, D. S. Koetke, Marcello Mannelli, Guenter Duckeck, Lutz Feld, R. Mir, M. Bobinski, Norbert Wermes, Sherry Towers, Paolo Giacomelli, J. A. Wilson, M. Hansroul, D. R. Ward, M. Jimack, Siegfried Bethke, T. Kress, W. G. Scott, A. Michelini, H. Mes, O. Schaile, P. W. Jeffreys, M. Foucher, I. P. Duerdoth, S. D. Bird, G. G. Hanson, A. M. Lee, G. Alexander, M. Boutemeur, F. S. Merritt, Richard Teuscher, S. Braibant, S. Yamashita, R. Rylko, B. Stockhausen, Paul Kyberd, F. K. Loebinger, D. I. Futyan, A. S. Turcot, C. Burgard, I. Cohen, Ivor Fleck, G. Giacomelli, S. W. O'Neale, A. Jawahery, Joleen Pater, M. F. Turner-Watson, R. W. Springer, R. J. Homer, D. Karlen, T. Saeki, P. I. Kayal, S. F. Ashby, R. Giacomelli, Sven Menke, Daniele Bonacorsi, Z. Trácsanyi, Peter Sherwood, S. Mihara, S. M. Gascon-Shotkin, M. A. Thomson, S. Robertson, D. Glenzinski, Dezso Horvath, M. J. Losty, R. Sobie, M. S. Dixit, Frans Meijers, P. S. Wells, J. Bechtluft, K. J. Anderson, M. Fanti, D. Zer-Zion, V. Blobel, J. A. McKenna, J. Ludwig, Reda Tafirout, Klaus Kurt Desch, S. A. Robins, R. Hawkings, K. Runge, P. Bock, E. Torrence, S. Petzold, Matthew Evans, A. M. Rossi, M. Kolrep, M. Sproston, Terry Richard Wyatt, C. Y. Chang, P. Vikas, D. Lanske, T. Mori, J. von Krogh, D. Lellouch, W. R. Gibson, J. E. Bloomer, D. Axen, K. R. Hossain, S. B. Anderson, J. Pálinkás, J. Kirk, P. Szymanski, P. Taras, Michael Kobel, R. M. Brown, E. von Tärne, Theodoros Geralis, A. Skillman, O. C. Cooke, P. Pfeifenschneider, A. T. Watson, L. A. del Pozo, Stan Bentvelsen, Allen Mincer, T. P. Kokott, T. Mashimo, Alessandra Fanfani, J. Patt, André Schöning, Robert McPherson, C. Sbarra, P. Huntemeyer, A. A. Carter, Ron Folman, T. Kobayashi, Mathieu Doucet, R. D. Heuer, P. Utzat, A. A. Faust, Fabrizio Fabbri, J. Schieck, D. M. Strom, E. Duchovni, W. Mohr, A. Posthaus, K. Nagai, D. R. Rust, J. Kanzaki, S. Tanaka, Tara Shears, P. A. Hart, P. Poffenberger, K. Ishii, Claire Shepherd-Themistocleous, A. Wagner, Matthias Schröder, T. Behnke, J. Steuerer, M. Thiergen, A. Macchiolo, M. Gruwé, C. M. Hawkes, Richard Nisius, Marco Cuffiani, U. Müller, A. J. Martin, C. K. Hargrove, K. Stoll, Andris Skuja, and Y. Rozen
Subjects: Physics, Particle physics, Missing energy, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Physics beyond the Standard Model, Standard Model, Nuclear physics, Pair production, Neutralino, High Energy Physics::Experiment, Production (computer science), Engineering (miscellaneous), Energy (signal processing)
Abstract: Photonic events with large missing energy have been observed in $\mathrm{e^+e^-}$ collisions at centre-of-mass energies of 130, 136, 161 and 172 GeV using the OPAL detector at LEP. Results are presented based on search topologies designed to select events with a single photon and missing transverse energy or events with a pair of acoplanar photons. In both search topologies, cross-section measurements are performed within the kinematic acceptance of the selection. These results are compared with the expectations from the Standard Model processes ${\rm e^+e^-}\to \nu\overline\nu \gamma (\gamma )$ (single-photon) and ${\rm e^+e^-}\to \nu\overline\nu \gamma \gamma (\gamma )$ (acoplanar-photons). No evidence is observed for new physics contributions to these final states. Upper limits on $\sigma({\rm e^+e^- \to XY)\cdot BR(X\to Y\gamma })$ and $\sigma({\rm e^+e^- \to XX)\cdot BR^2(X\to Y\gamma })$ are derived for the case of stable and invisible Y. These limits apply to single and pair production of excited neutrinos (${\rm X}= \nu^*,{\rm Y}= \nu$), to neutralino production (${\rm X}=\tilde\chi^0_2, {\rm Y}=\tilde\chi^0_1$), and to supersymmetric models in which ${\rm X}= \tilde\chi^0_1$ and ${\rm Y}=\tilde{\rm G}$ is a light gravitino. For the latter scenario, the results of the acoplanar-photons search are used to provide mode l-dependent lower limits on the mass of the lightest neutralino.
Published: 1998
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220. Measurements of the Bs0 and Λb0 lifetimes

Author: K Ackerstaff, G Alexander, J Allison, N Altekamp, K.J Anderson, S Anderson, S Arcelli, S Asai, S.F Ashby, D Axen, G Azuelos, A.H Ball, E Barberio, R.J Barlow, R Bartoldus, J.R Batley, S Baumann, J Bechtluft, C Beeston, T Behnke, A.N Bell, K.W Bell, G Bella, S Bentvelsen, S Bethke, S Betts, O Biebel, A Biguzzi, S.D Bird, V Blobel, I.J Bloodworth, J.E Bloomer, M Bobinski, P Bock, D Bonacorsi, M Boutemeur, S Braibant, L Brigliadori, R.M Brown, H.J Burckhart, C Burgard, R Bürgin, P Capiluppi, R.K Carnegie, A.A Carter, J.R Carter, C.Y Chang, D.G Charlton, D Chrisman, P.E.L Clarke, I Cohen, J.E Conboy, O.C Cooke, C Couyoumtzelis, R.L Coxe, M Cuffiani, S Dado, C Dallapiccola, G.M Dallavalle, R Davis, S De Jong, L.A del Pozo, K Desch, B Dienes, M.S Dixit, M Doucet, E Duchovni, G Duckeck, I.P Duerdoth, D Eatough, J.E.G Edwards, P.G Estabrooks, H.G Evans, M Evans, F Fabbri, A Fanfani, M Fanti, A.A Faust, L Feld, F Fiedler, M Fierro, H.M Fischer, I Fleck, R Folman, D.G Fong, M Foucher, A Fürtjes, D.I Futyan, P Gagnon, J.W Gary, J Gascon, S.M Gascon-Shotkin, N.I Geddes, C Geich-Gimbel, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, V Gibson, W.R Gibson, D.M Gingrich, D Glenzinski, J Goldberg, M.J Goodrick, W Gorn, C Grandi, E Gross, J Grunhaus, M Gruwé, C Hajdu, G.G Hanson, M Hansroul, M Hapke, C.K Hargrove, P.A Hart, C Hartmann, M Hauschild, C.M Hawkes, R Hawkings, R.J Hemingway, M Herndon, G Herten, R.D Heuer, M.D Hildreth, J.C Hill, S.J Hillier, P.R Hobson, A Hocker, R.J Homer, A.K Honma, D Horváth, K.R Hossain, R Howard, P Hüntemeyer, D.E Hutchcroft, P Igo-Kemenes, D.C Imrie, M.R Ingram, K Ishii, A Jawahery, P.W Jeffreys, H Jeremie, M Jimack, A Joly, C.R Jones, G Jones, M Jones, U Jost, P Jovanovic, T.R Junk, J Kanzaki, D Karlen, V Kartvelishvili, K Kawagoe, T Kawamoto, P.I Kayal, R.K Keeler, R.G Kellogg, B.W Kennedy, J Kirk, A Klier, S Kluth, T Kobayashi, M Kobel, D.S Koetke, T.P Kokott, M Kolrep, S Komamiya, T Kress, P Krieger, J von Krogh, P Kyberd, G.D Lafferty, R Lahmann, W.P Lai, D Lanske, J Lauber, S.R Lautenschlager, J.G Layter, D Lazic, A.M Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, S.L Lloyd, F.K Loebinger, G.D Long, M.J Losty, J Ludwig, D Lui, A Macchiolo, A Macpherson, M Mannelli, S Marcellini, C Markopoulos, C Markus, A.J Martin, J.P Martin, G Martinez, T Mashimo, P Mättig, W.J McDonald, J McKenna, E.A Mckigney, T.J McMahon, R.A McPherson, F Meijers, S Menke, F.S Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, D.J Miller, A Mincer, R Mir, W Mohr, A Montanari, T Mori, U Müller, S Mihara, K Nagai, I Nakamura, H.A Neal, B Nellen, R Nisius, S.W O'Neale, F.G Oakham, F Odorici, H.O Ogren, A Oh, N.J Oldershaw, M.J Oreglia, S Orito, J Pálinkás, G Pásztor, J.R Pater, G.N Patrick, J Patt, R Perez-Ochoa, S Petzold, P Pfeifenschneider, J.E Pilcher, J Pinfold, D.E Plane, P Poffenberger, B Poli, A Posthaus, C Rembser, S Robertson, S.A Robins, N Rodning, J.M Roney, A Rooke, A.M Rossi, P Routenburg, Y Rozen, K Runge, O Runolfsson, U Ruppel, D.R Rust, R Rylko, K Sachs, T Saeki, W.M Sang, E.K.G Sarkisyan, C Sbarra, A.D Schaile, O Schaile, F Scharf, P Scharff-Hansen, J Schieck, P Schleper, B Schmitt, S Schmitt, A Schöning, M Schröder, H.C Schultz-Coulon, M Schumacher, C Schwick, W.G Scott, T.G Shears, B.C Shen, C.H Shepherd-Themistocleous, P Sherwood, G.P Siroli, A Sittler, A Skillman, A Skuja, A.M Smith, G.A Snow, R Sobie, S Söldner-Rembold, R.W Springer, M Sproston, K Stephens, J Steuerer, B Stockhausen, K Stoll, D Strom, R Ströhmer, P Szymanski, R Tafirout, S.D Talbot, S Tanaka, P Taras, S Tarem, R Teuscher, M Thiergen, M.A Thomson, E von Törne, E Torrence, S Towers, I Trigger, Z Trócsányi, E Tsur, A.S Turcot, M.F Turner-Watson, P Utzat, R Van Kooten, M Verzocchi, P Vikas, E.H Vokurka, H Voss, F Wäckerle, A Wagner, C.P Ward, D.R Ward, P.M Watkins, A.T Watson, N.K Watson, P.S Wells, N Wermes, J.S White, B Wilkens, G.W Wilson, J.A Wilson, T.R Wyatt, S Yamashita, G Yekutieli, V Zacek, and D Zer-Zion
Subjects: Baryon, Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, 0103 physical sciences, Hadron, High Energy Physics::Experiment, 010306 general physics, Lambda, 01 natural sciences, Bar (unit)
Abstract: This paper presents updated measurements of the lifetimes of the B^0_s meson and the \Lambda_b baryon using 4.4 million hadronic Z^0 decays recorded by the OPAL detector at LEP from 1990 to 1995. A sample of B^0_s decays is obtained using D_s^- \ell^+ combinations, where the D_s^- is fully reconstructed in the \phi \pi^-, K^*0 K^- and K^- K^0_S decay channels and partially reconstructed in the \phi \ell^- \nu(bar) X decay mode. A sample of \Lambda_b decays is obtained using \Lambda_c^+ \ell^- combinations, where the \Lambda_c^+ is fully reconstructed in its decay to a p K^- \pi^+ final state and partially reconstructed in the \Lambda \ell^+ \nu X decay channel. From 172 +/- 28 D_s^- \ell^+ combinations attributed to B^0_s decays, the measured lifetime is \tau(B^0_s) = 1.50 +0.16 -0.15 +/- 0.04 ps, where the errors are statistical and systematic, respectively. From the 129 +\- 25 \Lamda_c^+ \ell^- combinations attributed to \Lambda_b decays, the measured lifetime \tau(\Lambda_b) = 1.29 +0.24 -0.22 +/- 0.06 ps, where the errors are statistical and systematic, respectively.
Published: 1998
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221. Search for the Bc meson in hadronic Z0 decays

Author: K Ackerstaff, G Alexander, J Allison, N Altekamp, K.J Anderson, S Anderson, S Arcelli, S Asai, S.F Ashby, D Axen, G Azuelos, A.H Ball, E Barberio, R.J Barlow, R Bartoldus, J.R Batley, S Baumann, J Bechtluft, C Beeston, T Behnke, A.N Bell, K.W Bell, G Bella, S Bentvelsen, S Bethke, S Betts, O Biebel, A Biguzzi, S.D Bird, V Blobel, I.J Bloodworth, J.E Bloomer, M Bobinski, P Bock, D Bonacorsi, M Boutemeur, S Braibant, L Brigliadori, R.M Brown, H.J Burckhart, C Burgard, R Bürgin, P Capiluppi, R.K Carnegie, A.A Carter, J.R Carter, C.Y Chang, D.G Charlton, D Chrisman, P.E.L Clarke, I Cohen, J.E Conboy, O.C Cooke, C Couyoumtzelis, R.L Coxe, M Cuffiani, S Dado, C Dallapiccola, G.M Dallavalle, R Davis, S De Jong, L.A del Pozo, K Desch, B Dienes, M.S Dixit, M Doucet, E Duchovni, G Duckeck, I.P Duerdoth, D Eatough, J.E.G Edwards, P.G Estabrooks, H.G Evans, M Evans, F Fabbri, A Fanfani, M Fanti, A.A Faust, L Feld, F Fiedler, M Fierro, H.M Fischer, I Fleck, R Folman, D.G Fong, M Foucher, A Fürtjes, D.I Futyan, P Gagnon, J.W Gary, J Gascon, S.M Gascon-Shotkin, N.I Geddes, C Geich-Gimbel, T Geralis, G Giacomelli, P Giacomelli, R Giacomelli, V Gibson, W.R Gibson, D.M Gingrich, D Glenzinski, J Goldberg, M.J Goodrick, W Gorn, C Grandi, E Gross, J Grunhaus, M Gruwé, C Hajdu, G.G Hanson, M Hansroul, M Hapke, C.K Hargrove, P.A Hart, C Hartmann, M Hauschild, C.M Hawkes, R Hawkings, R.J Hemingway, M Herndon, G Herten, R.D Heuer, M.D Hildreth, J.C Hill, S.J Hillier, P.R Hobson, A Hocker, R.J Homer, A.K Honma, D Horváth, K.R Hossain, R Howard, P Hüntemeyer, D.E Hutchcroft, P Igo-Kemenes, D.C Imrie, M.R Ingram, K Ishii, A Jawahery, P.W Jeffreys, H Jeremie, M Jimack, A Joly, C.R Jones, G Jones, M Jones, U Jost, P Jovanovic, T.R Junk, J Kanzaki, D Karlen, V Kartvelishvili, K Kawagoe, T Kawamoto, P.I Kayal, R.K Keeler, R.G Kellogg, B.W Kennedy, J Kirk, A Klier, S Kluth, T Kobayashi, M Kobel, D.S Koetke, T.P Kokott, M Kolrep, S Komamiya, T Kress, P Krieger, J von Krogh, P Kyberd, G.D Lafferty, R Lahmann, W.P Lai, D Lanske, J Lauber, S.R Lautenschlager, J.G Layter, D Lazic, A.M Lee, E Lefebvre, D Lellouch, J Letts, L Levinson, S.L Lloyd, F.K Loebinger, G.D Long, M.J Losty, J Ludwig, D Lui, A Macchiolo, A Macpherson, M Mannelli, S Marcellini, C Markopoulos, C Markus, A.J Martin, J.P Martin, G Martinez, T Mashimo, P Mättig, W.J McDonald, J McKenna, E.A Mckigney, T.J McMahon, R.A McPherson, F Meijers, S Menke, F.S Merritt, H Mes, J Meyer, A Michelini, G Mikenberg, D.J Miller, A Mincer, R Mir, W Mohr, A Montanari, T Mori, U Müller, S Mihara, K Nagai, I Nakamura, H.A Neal, B Nellen, R Nisius, S.W O'Neale, F.G Oakham, F Odorici, H.O Ogren, A Oh, N.J Oldershaw, M.J Oreglia, S Orito, J Pálinkás, G Pásztor, J.R Pater, G.N Patrick, J Patt, R Perez-Ochoa, S Petzold, P Pfeifenschneider, J.E Pilcher, J Pinfold, D.E Plane, P Poffenberger, B Poli, A Posthaus, C Rembser, S Robertson, S.A Robins, N Rodning, J.M Roney, A Rooke, A.M Rossi, P Routenburg, Y Rozen, K Runge, O Runolfsson, U Ruppel, D.R Rust, R Rylko, K Sachs, T Saeki, W.M Sang, E.K.G Sarkisyan, C Sbarra, A.D Schaile, O Schaile, F Scharf, P Scharff-Hansen, J Schieck, P Schleper, B Schmitt, S Schmitt, A Schöning, M Schröder, H.C Schultz-Coulon, M Schumacher, C Schwick, W.G Scott, T.G Shears, B.C Shen, C.H Shepherd-Themistocleous, P Sherwood, G.P Siroli, A Sittler, A Skillman, A Skuja, A.M Smith, G.A Snow, R Sobie, S Söldner-Rembold, R.W Springer, M Sproston, K Stephens, J Steuerer, B Stockhausen, K Stoll, D Strom, R Ströhmer, P Szymanski, R Tafirout, S.D Talbot, S Tanaka, P Taras, S Tarem, R Teuscher, M Thiergen, M.A Thomson, E von Törne, E Torrence, S Towers, I Trigger, Z Trócsányi, E Tsur, A.S Turcot, M.F Turner-Watson, P Utzat, R Van Kooten, M Verzocchi, P Vikas, E.H Vokurka, H Voss, F Wäckerle, A Wagner, C.P Ward, D.R Ward, P.M Watkins, A.T Watson, N.K Watson, P.S Wells, N Wermes, J.S White, B Wilkens, G.W Wilson, J.A Wilson, T.R Wyatt, S Yamashita, G Yekutieli, V Zacek, and D Zer-Zion
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Hadron, FOS: Physical sciences, Electron, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Particle Physics - Experiment
Abstract: A search for decays of the B_c meson was performed using data collected from 1990-1995 with the OPAL detector on or near the Z peak at LEP. The decay channels B_c^+ -> J/psi pi^+, B_c^+ -> J/psi a_1^+ and B_c^+ -> J/psi ell^+ nu were investigated, where ell denotes an electron or a muon. Two candidates are observed in the mode B_c^+ -> J/psi pi^+, with an estimated background of (0.63 +/- 0.20) events. The weighted mean of the masses of the two candidates is (6.32 +/- 0.06) GeV/c^2, which is consistent with the predicted mass of the B_c meson. One candidate event is observed in the mode B_c^+ -> J/psi ell^+ nu with an estimated background of (0.82 +/- 0.19) events. No candidate events are observed in the B_c^+ -> J/psi a_1^+ decay mode, with an estimated background of (1.10 +/- 0.22) events. Upper bounds at the 90% confidence level are set on the production rates for these processes., 18 pages, LaTeX, uses a4p.sty, 6 eps figures included, submitted to Phys. Lett. B
Published: 1998
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222. Numerical Modeling of Turbulent Flow in Porous Media Using a Spatially Periodic Array

Author: Fujio Kuwahara, Akira Nakayama, S. Yamashita, and Y. Kameyama
Subjects: Materials science, Mechanics of Materials, Turbulence, Mechanical Engineering, Modeling and Simulation, Biomedical Engineering, Numerical modeling, General Materials Science, Mechanics, Condensed Matter Physics, Porous medium
Published: 1998
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223. Consideration of Geosynthetics-Reinforcing Effect on Reduction of Liquefaction-Induced Damage to Embankment Structure

Author: S. Yamashita, K. Kojima, K. Kasahara, S. Maruo, and Y. Yokota
Subjects: Reduction (complexity), geography, geography.geographical_feature_category, Forensic engineering, Liquefaction, Geotechnical engineering, Geosynthetics, Levee, Geology
Published: 1998
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224. Measurement of single spin asymmetry in η-meson production in p↑p and p̄↑p interactions in the beam fragmentation region at 200 GeV/c

Author: Andrey Vasiliev, T. Yoshida, Kozo Miyake, Y. Goto, M. Nessi, M. D. Corcoran, Kazuo Iwatani, Norio Saito, O. A. Grachov, A. Michalowicz, N. I. Belikov, A. Yokosawa, Anna Zanetti, Y. Ohashi, J. Skeens, S. B. Nurushev, K. Kuroda, P. Schiavon, Yasar Onel, Takashi Maki, T. Iijima, A. P. Meschanin, Francesca Nessi-Tedaldi, Fujio Takeutchi, A. de Lesquen, N. Tanaka, Tatsushi Shima, D. L. Adams, L. Van Rossum, H. En'yo, G. Salvato, V. L. Solovyanov, D. Grosnick, J. Bystricky, Ryuichi Takashima, Aldo Penzo, A. Bravar, L.V. Nogach, J. Cranshaw, N. Akchurin, J. D. Cossairt, N. Tamura, D. Lopiano, Robert Stanek, F. Lehar, Yu. V. Kharlov, D. Hill, H. M. Spinka, F. Luehring, J. L. White, Yoshitaka Itow, B. E. Bonner, L.V. Alexeeva, Yu A. Matulenko, G. F. Rappazzo, D. G. Underwood, K. Imai, S. Yamashita, H. Funahashi, S. Makino, A. L. Read, K. Krueger, V.L. Rykov, C. Nguyen, Jay Roberts, Akira Masaike, A. A. Derevschikov, David Miller, T. Nagamine, G. Pauletta, D. I. Patalakha, and M. Laghai
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson production, Proton, media_common.quotation_subject, Nuclear Theory, Astrophysics::Cosmology and Extragalactic Astrophysics, Asymmetry, Nuclear physics, Fragmentation (mass spectrometry), Antiproton, High Energy Physics::Experiment, Nuclear Experiment, media_common
Abstract: We present experimental results on measuring a single spin asymmetry in η-meson production in the interaction of transversely polarized protons and antiprotons at plab = 200 GeV/c with a proton target in the region 0.2 < xF < 0.7 for p↑p, 0.3 < xF < 0.7 for p↑p and 0.7 < pT < 2.0 GeV/c. A comparison of single spin asymmetries in π- and η-meson production is made.
Published: 1998
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225. Diagnostic laparoscopy identifies a peritoneal adenomatoid-like mesothelioma masquerading as ovarian cancer: a case report

Author: T, Okuda, Y, Ogino, S, Yamashita, H, Ishii, S, Kin, A, Nagata, M, Otsubo, H, Kataoka, and J, Kitawaki
Subjects: Adenomatoid Tumor, Diagnosis, Differential, Mesothelioma, Ovarian Neoplasms, Humans, Female, Laparoscopy, Middle Aged, Peritoneal Neoplasms
Abstract: The authors report a rare case of peritoneal adenomatoid mesothelioma in a woman with no history of asbestos exposure. A 61-year-old woman was originally suspected of having a bilateral ovarian tumor based on chest radiography and magnetic resonance imaging (MRI). Upon referral to our hospital, the presence of two solid masses was confirmed by enhanced MRI and 18F-fluorodeoxyglucose positron-emission tomography/computed tomography (18F-FDG-PET/CT). Physical examination was normal, as were serum concentrations of the tumor markers CA 19-9, CA 125, and CEA. Laparoscopic surgery showed a right ovarian tumor and laparoscopic right salpingo-oophorectomy and adhesiotomy were performed. Two months later, the patient underwent laparoscopic segmental resection of the sigmoid colon, with histological analysis identifying an adenomatoid-like tumor. The final diagnosis was peritoneal adenomatoid-like mesothelioma with invasion of the right ovary. This case report demonstrates that imaging techniques must be coupled with laparoscopic surgery for an accurate diagnosis of peritoneal mesothelioma.
Published: 2014

226. Mediastinoscopic extended thymectomy for pediatric patients with myasthenia gravis

Author: F. Asano, S. Yamashita, H. Osaka, Kyoko Mochizuki, Norihiko Kitagawa, Masato Shinkai, Hiroshi Take, N. Kurauchi, Hisayuki Miyagi, T. Kido, and H. Usui
Subjects: Male, medicine.medical_specialty, Microsurgery, Adolescent, Extended thymectomy, Recurrent nerve, Mediastinoscopy, Blood loss, Myasthenia Gravis, medicine, Humans, Child, medicine.diagnostic_test, business.industry, Infant, General Medicine, medicine.disease, Thymectomy, Myasthenia gravis, Surgery, Surgical access, Dissection, Treatment Outcome, Anesthesia, Child, Preschool, Pediatrics, Perinatology and Child Health, Dose reduction, Female, business
Abstract: Background Extended thymectomy is indicated for children with myasthenia gravis (MG) when drug-resistance or dependence is seen. We have employed a technique for mediastinoscopic extended thymectomy (MET) on children with MG. Method A total of 14 children underwent MET at Kanagawa Children's Medical Center between 2005 and 2013. A mediastinal operation field was made by a V-shaped hook infrasternally to extirpate the thymus with adipose tissue around the thymus. Results The operation time and the amount of blood loss were 182±44minutes and 34±43ml, respectively. Postoperative complications, in the form of transient paralysis of the right recurrent nerve, occurred in 2 patients. The median length of postoperative hospital stay was 4.5days. After MET, 6 patients achieved complete remission and 7 patients achieved steroid dose reduction, but no improvement was seen in 1 patient. Conclusions This procedure offers the advantage of good surgical access for dissection around the bilateral phrenic nerves in extended total thymectomy, while achieving good cosmetic results.
Published: 2014

227. Success Drivers in the Japanese Elite Sport System: An Examination Based on Evaluations of the Elite Sport Climate by Elite Athletes

Author: Funahashi, Hiroaki, J, Nagamatsu, K, Shirai, S, Yamashita, H. Nakamura, E, Yamada, T. Waku, De Bosscher, Veerle, Yoshi, Mano, and Sport and Society
Subjects: international success, Japanese elite sport, elite sport policy
Abstract: The purpose of this research was to examine policy-related success drivers leading to athletic success by conducting an evaluation of the elite sport climate with Japanese elite athletes as the survey subjects (n=105). The analysis investigated which specific policy-related factors describe the difference between elite athletes who achieved results in the Top 8 in major international competitions, e.g. World Championships, in the 2 years before the survey was conducted between 19 July 2011 and 31 December 2011 (Elite ?) and other elite athletes (Elite ?). The study was drawn from the research framework and scoring system developed by De Bosscher et al. (2006, 2008, 2009, 2010) that is built on the SPLISS (Sports Policy Factors leading to International Sporting Success) model. The results revealed differences in elite sport climate between Elite ? and Elite ? in 3 pillars (organisation and structure of sport policies, talent identification and development, and (inter)national competition), which were all evaluated higher by Elite ?. The findings support the importance of the improvement of the elite sport climate with the particular reference to the significance of organization and structure of sport policy, talent identification and development, and (inter)national competition.
Published: 2014

228. Production of P-wave charm and charm-strange mesons in hadronic Z $^0$ decays

Author: Matthias Schröder, D. L. Rees, M. A. Thomson, E. K. U. Gross, M. Sproston, F. Scharf, G. G. Hanson, German Martinez, M. Thiergen, Hans-Christian Schultz-Coulon, Randall Sobie, G. Giacomelli, J. Letts, Michael Schulz, G. D. Lafferty, H. M. Fischer, J. Schieck, W. Mohr, Ekg Sarkisyan, M. Fanti, A. Posthaus, J. Lauber, L. Brigliadori, K. Stoll, Gideon Bella, R. W. Springer, H. Mes, I. P. Duerdoth, Otmar Biebel, H. J. Burckhart, J. Grunhaus, P. W. Jeffreys, K. Sachs, Shlomo Dado, Andris Skuja, Jacqueline Batley, J. Goldberg, B. Nellen, S. Petzold, Tetsuro Mashimo, Tara Shears, P. A. Hart, Daniel Lellouch, Robert McPherson, Takehiko Mori, Mathieu Doucet, Guenter Duckeck, P. G. Estabrooks, D. Chrisman, G. D. Long, Volker Blobel, S. D. Talbot, S. W. O'Neale, S. Yamashita, P. Igo-Kemenes, K. Ishii, H. Jeremie, Stephen Lloyd, R. D. Heuer, Robert M Brown, Fabrizio Fabbri, M. J. Pearce, V. Zacek, K. J. Anderson, Georges Azuelos, Reda Tafirout, Klaus Kurt Desch, Kiyotomo Kawagoe, A. Joly, R. Van Kooten, D. Eatough, N. K. Watson, E. Tsur, H. G. Evans, Giora Mikenberg, W. Gorn, C. R. Jones, M. J. Goodrick, P. M. Watkins, Claire Shepherd-Themistocleous, S. B. Anderson, M. Verzocchi, P. Szymanski, Norbert Wermes, K. W. Bell, Sherry Towers, I. Cohen, P. Poffenberger, O. Schaile, M. Schumacher, E. do Couto e Silva, C. Sbarra, E. Lefebvre, P. Vikas, J. Pálinkás, T. Kawamoto, S. Braibant, W. R. Gibson, F. Odorici, A. D. Schaile, F. Wäckerle, N. I. Geddes, D. Lanske, D. M. Gingrich, M. F. Turner-Watson, Michael Hildreth, M. Morii, J. C. Hill, P. Gagnon, Gabriella Pasztor, B. T. Bouwens, Sven Menke, U. Müller, Peter R Hobson, S. Orito, M. Rosvick, John Allison, Dave Charlton, P. Scharff-Hansen, S. R. Lautenschlager, Stan Bentvelsen, W. J. McDonald, N. L. Rodning, H. A. Neal, B. C. Shen, D. Zer-Zion, A. J. Martin, Lorne Levinson, A. Sittler, P. Routenburg, P. Berlich, M. Hapke, B. Poli, K. Nagai, G. A. Snow, C. P. Ward, Sachio Komamiya, Peter Schleper, Gideon Alexander, Theodoros Geralis, A. A. Faust, Stefan Kluth, A. Skillman, R. Bürgin, P. Pfeifenschneider, Paolo Capiluppi, Stefan Schmitt, E. Ros, Siegfried Bethke, T. Hilse, D. R. Rust, D. E. Hutchcroft, R. Lahmann, Shlomit Tarem, A. K. Honma, Silvia Arcelli, D. C. Imrie, C. Y. Chang, S. Söldner-Rembold, A. M. Smith, R. G. Kellogg, C. Hartmann, U. Ruppel, M. R. Ingram, W. G. Scott, Richard Teuscher, A. S. Turcot, O. Runolfsson, D. E. Plane, I. Nakamura, T. P. Kokott, C. K. Hargrove, Stephen Hillier, J. Patt, G. M. Dallavalle, André Schöning, T. Behnke, Csaba Hajdu, F. Fiedler, A. M. Lee, T. Saeki, M. J. Oreglia, P. Taras, E. von Törne, Michael Kobel, S. D. Bird, P. Schenk, Ehud Duchovni, Alan Watson, Stefano Marcellini, G. P. Siroli, C. Beeston, Christoph Schwick, S. Baumann, D. Axen, M. Jimack, S. A. Robins, James Pinfold, A. Jawahery, Claudio Grandi, S. M. Gascon-Shotkin, P. Mättig, D. Glenzinski, J. R. Carter, G. N. Patrick, Allen Mincer, E. A. Mckigney, Gunter Wolf, Julie Kirk, D. G. Fong, A. Michelini, K. Ackerstaff, Dezso Horvath, M. J. Losty, J. Gascon, M. Kolrep, A. Macchiolo, Shoji Asai, B. Stockhausen, Paul Kyberd, F. K. Loebinger, W. P. Lai, Peter Sherwood, Jean-Arcady Meyer, Satoshi Tanaka, J. Steuerer, M. Gruwé, C. M. Hawkes, K. Stephens, Ivor Fleck, I. J. Bloodworth, Alexander Wagner, T. Kobayashi, J. Ludwig, Joleen Pater, J. W. Gary, Paolo Giacomelli, D. S. Koetke, M. Hansroul, K. Runge, P. Bock, A. Klier, Marcello Mannelli, R. Giacomelli, V. Gibson, Richard Nisius, J. M. Roney, C. Burgard, Marco Cuffiani, Yoram Rozen, T. R. Junk, D. I. Futyan, R. J. Homer, I. Trigger, M. Foucher, M. Fierro, J. E.G. Edwards, D. R. Ward, T. Kress, Matthew Evans, D. Karlen, A. M. Rossi, U. Jost, R. Mir, R. Hawkings, F. G. Oakham, B. Schmitt, E. L. Barberio, D. Rigby, R. J. Hemingway, B. W. Kennedy, P. Jovanovic, Austin Ball, Peter Krieger, Alessandro Montanari, C. Dallapiccola, N. Altekamp, H. Voss, R. J. Barlow, D. J. Miller, S. Robertson, Gregor Herten, B. Wilkens, J. E. Pilcher, G. W. Wilson, M. Hauschild, C. Markus, G. T. Jones, E. H. Vokurka, N. J. Oldershaw, M. S. Dixit, Frans Meijers, A. Biguzzi, A. Rooke, J. G. Layter, P. E.L. Clarke, M. K. Jones, J. P. Martin, S. De Jong, H. Przysiezniak, A. N. Bell, G. Yekutieli, A. A. Carter, Ron Folman, P. Utzat, Daniele Bonacorsi, O. C. Cooke, J. von Krogh, L. A. del Pozo, T. J. McMahon, R. K. Carnegie, M. Herndon, M. Bobinski, J. A. Wilson, D. Lazic, A. Macpherson, Richard Keeler, R. Bartoldus, R. Howard, J. S. White, H. O. Ogren, Christoph Geich-Gimbel, J. E. Conboy, Vakhtang Kartvelishvili, A. Fürtjes, M. Boutemeur, F. S. Merritt, D. M. Strom, J. Bechtluft, J. A. McKenna, R. Rylko, P. S. Wells, Terry Richard Wyatt, and J. E. Bloomer
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Hadronization, Nuclear physics, Excited state, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Particle Physics - Experiment, K channels
Abstract: Results are presented on the production of excited charm and excited charm-strange mesons in hadronic Z(0) decays. The results are obtained from approximately 4.3 million hadronic Z(0) decays, collected on or near the Z(0) resonance using the OPAL detector at LEP. The D-1(0)(2420) and D*(0)(2)(2460) mesons are reconstructed in the D*(+)pi(-) final state and their separate production rates in charm fragmentation and in weak decays of b-hadrons are determined. Assuming that the decay widths of these mesons are saturated by the allowed D*pi and D pi final states, the charm hadronization fractions and the inclusive branching ratios of b-hadrons to these neutral P-wave charm mesons are determined to bef(c --> D-1(0)) = 0.021 +/- 0.007(stat) +/- 0.003(syst), f(c --> D*(0)(2)) = 0.052 +/- 0.022(stat)+/- 0.013(syst), f(b --> D-1(0)) = 0.050 +/- 0.014(stat) +/- 0.006(syst), f(b --> D*(0)(2)) = 0.047 +/- 0.024(stat) +/- 0.013(syst).We also present the first observation at LEP of the D-s1(+)(2536) meson which is reconstructed in both the D*K-+(s)0 and D*K-0(+) final states After correcting for the expected contribution from bb events, assuming that the D*K channels saturate the available final states, these results are used to derive the charm hadronization fraction f(c --> D-s1(+)):f(c --> D-s1(+)) = 0.016 +/- 0.004(stat) +/- 0.003(syst).
Published: 1997
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229. Scalar and vector meson production and two-step processes in the (K−, K+) reaction on 12C

Author: Y. Matsuyama, Michiko Sekimoto, J. K. Ahn, J. M. Lee, K. S. Sim, S. Makino, S. Yokkaichi, Tsuneo Fukuda, Norio Saito, Fujio Takeutchi, M. S. Chung, C. Nagoshi, Yoshitaka Itow, Shigeki Aoki, Y. Goto, Minoru Yoshida, Y. Yatsuda, Y.M. Shin, K. Imai, I. S. Park, Ryuichi Takashima, A. Higashi, Kenichi Yoshida, I. Nomura, Masaharu Ieiri, K. S. Chung, S. Yamashita, Masataka Iinuma, Akira Masaike, H. Funahashi, H. En'yo, P. Tlustý, Satoshi Mihara, R. Susukita, Tomoko Yoshida, S. Weibe, and T. Iijima
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Pair production, Meson, Scalar (mathematics), Two step, Hyperon, Vector meson, Strangeness, Lambda
Abstract: The double strangeness exchange reaction ( K − , K + ) is investigated with respect to the sub-threshold production of scalar and vector mesons ( f 0 / a 0 / φ ) decaying into K + K − and the two-step processes induced by intermediate mesons and Ξ − hyperons at p k − = 1.66 GeV/ c using a scintillating fiber active target. The differential cross section ( 〈 dσ dΩ L 〉) averaged over the angular interval (2.3° ⩽ θ K + L ⩽ 14.7°) for the sub-threshold f 0 / a 0 / φ meson production with the K + K − decay is 11 ± 6 μ b/sr at 0.6 ⩽ p K 1 c . The present result differs significantly from the theoretical calculation which predicts the contribution of the f 0 / a 0 / φ meson production to be predominant in the ( K − , K + ) reaction below p K + = 0.95 GeV/ c . We found a sizable contribution from two-step ( K − , K + processes, characterized by production of two S = −1 hyperons, consistent with the result of the intra-nuclear cascade (INC) model calculation with respect to the meson-induced hyperon (or hyperon resonance) pair production in the momentum region 0.6 ⩽ p K + c . The observed enhancement of the cross section for the two-step ΛΛ production beyond the prediction of the INC model at p K + ⋍ 1.1 GeV /c could be due to the Ξ − p → ΛΛ reaction in 12 C.
Published: 1997
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230. Geometrical structures and fundamental characteristics of microwave stepped-impedance resonators

Author: M. Makimoto, M. Sagawa, and S. Yamashita
Subjects: Engineering, Radiation, business.industry, Resonance, Condensed Matter Physics, Lambda, Topology, Resonator, Band-pass filter, Transmission line, Q factor, Electronic engineering, Equivalent circuit, Electrical and Electronic Engineering, business, Electrical impedance
Abstract: /spl lambda//sub g//4-,/spl lambda//sub g//2-, and /spl lambda//sub g/-type transmission-line stepped-impedance resonators (SIRs) have been proposed and various practical applications have been reported on the basis of the analysis related to each resonator. This paper standardizes these three types of SIRs and systematically summarizes their fundamental characteristics, such as resonance conditions, resonator length, spurious (higher order) responses, and equivalent circuits. Practical applications which employ features of three types of SIRs are investigated with demonstrations of specific structures. Original design formulas with respect to /spl lambda//sub g/-type dual-mode resonators are analytically derived. Advanced SIR's using composite material and multisteps are also introduced and their availability is discussed.
Published: 1997
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231. Spin Transfer in InclusiveΛ0Production by Transversely Polarized Protons at200GeV/c

Author: Fujio Takeutchi, S. Yamashita, D. Grosnick, D. Hill, N. Tamura, Andrey Vasiliev, Jay Roberts, B. E. Bonner, V. L. Solovyanov, S. B. Nurushev, VL Rykov, K. Kuroda, P. Schiavon, Akira Masaike, Alexander Lincoln Read, A. P. Meschanin, Nural Akchurin, D. H. Miller, A. Yokosawa, Kozo Miyake, H. M. Spinka, Y. Goto, T. Nagamine, Francesca Nessi-Tedaldi, Yoshitaka Itow, D. I. Patalakha, M. Laghai, Kazuo Iwatani, J. L. White, H. Funahashi, Yu A. Matulenko, T. Mäki, H. En'yo, G. Salvato, F. Lehar, T. Yoshida, J. Cranshaw, Y. Ohashi, J. Bystricky, F. Luehring, A. Michalowicz, N. I. Belikov, Aldo Penzo, C. Nguyen, S. Makino, A. A. Derevschikov, G. F. Rappazzo, D. G. Underwood, G. Pauletta, K. Imai, J. D. Cossairt, Anna Zanetti, Yasar Onel, D. Lopiano, Ryuichi Takashima, L. van Rossum, David H. Adams, T. Iijima, Marzio Nessi, J. Skeens, A. de Lesquen, Norio Saito, Robert Stanek, M. D. Corcoran, O. A. Grachov, and A. Bravar
Subjects: Physics, Quantum chromodynamics, Particle physics, Proton, Quark model, Hyperon, Physics::Accelerator Physics, General Physics and Astronomy, Parton, Spin-flip, Multiplicity (chemistry), Nuclear Experiment, Lambda
Abstract: Surprisingly large polarizations in hyperon production by unpolarized protons have been known for a long time. The spin dynamics of the production process can be further investigated with polarized beams. Recently, a negative asymmetry ${A}_{N}$ was found in inclusive ${\ensuremath{\Lambda}}^{0}$ production with a $200\mathrm{GeV}/c$ transversely polarized proton beam. The depolarization ${D}_{\mathrm{NN}}$ in $p\ensuremath{\uparrow}+p\ensuremath{\rightarrow}{\ensuremath{\Lambda}}^{0}+X$ has been measured with the same beam over a wide ${x}_{F}$ range and at moderate ${p}_{T}$. ${D}_{\mathrm{NN}}$ reaches positive values of about 30% at high ${x}_{F}$ and ${p}_{T}\ensuremath{\sim}1.0\mathrm{GeV}/c$. This result shows a sizable spin transfer from the incident polarized proton to the outgoing ${\ensuremath{\Lambda}}^{0}$.
Published: 1997
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232. Search for CP violation in Z $^0\longrightarrow{\tau^+\tau^-}$ and an upper limit on the weak dipole moment of the $\tau$ lepton

Author: M. Schumacher, E. Lefebvre, G. W. Wilson, M. Hauschild, S. A. Wotton, C. Markus, G. T. Jones, E. H. Vokurka, F. Odorici, I. J. Bloodworth, A. S. Turcot, F. Fiedler, D. Rigby, R. J. Hemingway, B. W. Kennedy, Yoram Rozen, P. Jovanovic, Austin Ball, Peter Krieger, O. C. Cooke, M. Foucher, R. W. Springer, Manuella Vincter, Alessandro Montanari, M. Kolrep, Matthias Schröder, N. K. Watson, D. Karlen, J. von Krogh, H. Mes, Hans-Christian Schultz-Coulon, I. P. Duerdoth, P. Fath, C. Dallapiccola, Gunter Wolf, K. Ackerstaff, Randall Sobie, A. Biguzzi, Michael Schulz, G. D. Lafferty, Georges Azuelos, N. Altekamp, M. Thiergen, E. Tsur, H. Lafoux, R. J. Barlow, J. M. Roney, Claire Shepherd-Themistocleous, R. Bartoldus, M. Verzocchi, D. J. Miller, Stefan Schmitt, R. J. Hawkings, S. Yamashita, K. W. Bell, P. Igo-Kemenes, J. Pálinkás, K. Ishii, J. Lauber, H. O. Ogren, H. Jeremie, Christoph Geich-Gimbel, L. A. del Pozo, U. Jost, R. Mir, R. E. Hughes-Jones, T. J. Smith, J. C. Hill, K. Stephens, Misao Sasaki, R. Lahmann, Guenter Duckeck, D. C. Imrie, W. Mohr, W. J. McDonald, B. C. Shen, Gideon Bella, H. J. Burckhart, Jacqueline Batley, Paolo Giacomelli, A. Posthaus, P. Mättig, Shoji Asai, V. Gibson, O. Schaile, E. do Couto e Silva, Siegfried Bethke, F. Strumia, S. D. Talbot, G. P. Siroli, A. K. Honma, M. Hansroul, B. Nijjhar, W. G. Scott, T. J. McMahon, Daniel Lellouch, F. G. Oakham, I. Nakamura, Takehiko Mori, B. Schmitt, Abish Malik, T. R. Junk, C. Hartmann, T. Omori, I. Trigger, F. X. Gentit, E. L. Barberio, Kiyotomo Kawagoe, Sven Menke, D. R. Ward, T. Kress, D. E. Plane, S. B. Anderson, P. Szymanski, C. Burgard, Stefan Kluth, R. J. Homer, Shlomit Tarem, U. Müller, V. Zacek, Stephen Hillier, G. M. Dallavalle, J. E. Conboy, D. Chrisman, A. Fürtjes, A. J. Martin, U. Ruppel, M. R. Ingram, R. K. Carnegie, Volker Blobel, T. Behnke, C. R. Jones, M. Herndon, M. Bobinski, J. A. Wilson, D. Glenzinski, Dezso Horvath, M. J. Losty, D. Axen, A. Jawahery, Stan Bentvelsen, Achim Stahl, A. I. McNab, J. Goldberg, Jean-Arcady Meyer, Stephen Lloyd, D. L. Rees, James Pinfold, M. Boutemeur, F. S. Merritt, D. G. Fong, C. Lewis, M. Gruwé, Dave Charlton, A. Wagner, Peter Sherwood, C. M. Hawkes, B. Nellen, C. K. Hargrove, Tara Shears, F. Scharf, J. Gascon, R. Bürgin, German Martinez, J. Ludwig, P. A. Hart, D. Lazic, C. Sbarra, K. Runge, P. Bock, J. W. Gary, J. Bechtluft, J. A. McKenna, Richard Nisius, H. G. Evans, Reda Tafirout, Klaus Kurt Desch, M. J. Goodrick, I. Cohen, M. J. Pearce, D. S. Koetke, Marcello Mannelli, W. Matthews, Marco Cuffiani, K. Ametewee, M. A. Thomson, G. Yekutieli, Andris Skuja, S. Petzold, G. D. Long, Tetsuro Mashimo, P. Pfeifenschneider, E. K. U. Gross, A. Gaidot, J. Patt, Gideon Alexander, Paolo Capiluppi, P. Gagnon, A. A. Carter, Ron Folman, Roger Jones, M. Sproston, W. Gorn, B. J. King, P. Utzat, P. Scharff-Hansen, A. M. Smith, A. Sittler, G. Vasseur, W. R. Gibson, Ehud Duchovni, B. T. Bouwens, M. Jimack, H. M. Bosch, A. Michelini, R. M. Brown, Lorne Levinson, Satoshi Tanaka, T. Kobayashi, A. Skillman, M. F. Turner-Watson, M. Morii, Peter R Hobson, R. Van Kooten, P. Routenburg, F. Wäckerle, D. M. Gingrich, P. Berlich, K. Nagai, J. Grunhaus, D. R. Rust, A. M. Lee, Sachio Komamiya, H. M. Fischer, E. von Törne, Theodoros Geralis, E. Ros, A. T. Watson, T. P. Kokott, S. A. Robins, Robert McPherson, Mathieu Doucet, R. D. Heuer, Fabrizio Fabbri, S. M. Gascon-Shotkin, Matthew Evans, A. M. Rossi, T. Tsukamoto, N. I. Geddes, Michael Hildreth, N. L. Rodning, B. Poli, S. R. Lautenschlager, B. Stockhausen, Paul Kyberd, F. K. Loebinger, H. A. Neal, J. Steuerer, Joleen Pater, T. Hilse, R. Giacomelli, O. Runolfsson, C. Beeston, A. Joly, Claudio Grandi, John Allison, R. G. Kellogg, M. Steiert, Csaba Hajdu, Stefano Marcellini, M. Fierro, J. E.G. Edwards, Ekg Sarkisyan, P. W. Jeffreys, J. J. Ward, P. Vikas, D. Lanske, Silvia Arcelli, E. A. Mckigney, W. P. Lai, P. Schenk, P. G. Estabrooks, R. K. Keeler, N. J. Oldershaw, P. M. Watkins, S. Robertson, Gregor Herten, B. Wilkens, J. E. Pilcher, P. Poffenberger, K. Sachs, Shlomo Dado, Giora Mikenberg, P. Schütz, S. Braibant, A. D. Schaile, Gabriella Pasztor, G. A. Snow, C. P. Ward, S. Söldner-Rembold, R. Howard, J. S. White, C. Y. Chang, D. M. Strom, P. Taras, Michael Kobel, R. Rylko, P. S. Wells, Terry Richard Wyatt, Julie Kirk, J. E. Bloomer, S. W. O'Neale, K. J. Anderson, Otmar Biebel, J. Letts, Norbert Wermes, Sherry Towers, T. Kawamoto, S. Orito, M. Rosvick, M. Hapke, D. E. Hutchcroft, M. J. Oreglia, J. R. Carter, G. N. Patrick, G. G. Hanson, G. Giacomelli, M. S. Dixit, Frans Meijers, P. E.L. Clarke, M. K. Jones, J. P. Martin, S. De Jong, H. Przysiezniak, A. N. Bell, A. Rooke, and J. G. Layter
Subjects: Quark, Physics, Dipole, Particle physics, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Moment (physics), CP violation, Limit (mathematics), Electron, Lepton
Published: 1997
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233. Study of $\phi(1020)$ , ${\rm D}^{\pm}$ and B $^$ spin alignment in hadronic Z $^0$ decays

Author: Achim Stahl, P. Pfeifenschneider, J. Patt, Paolo Giacomelli, M. Hansroul, C. Burgard, R. J. Homer, Ekg Sarkisyan, P. W. Jeffreys, W. R. Gibson, J. J. Ward, P. Vikas, D. Lanske, S. R. Lautenschlager, H. A. Neal, B. T. Bouwens, T. Hilse, O. Runolfsson, R. M. Brown, A. Joly, Lorne Levinson, C. Beeston, Claudio Grandi, Dave Charlton, O. C. Cooke, A. Skillman, Claire Shepherd-Themistocleous, R. Lahmann, R. Bürgin, Reda Tafirout, Klaus Kurt Desch, D. C. Imrie, J. von Krogh, Gideon Bella, H. J. Burckhart, Jacqueline Batley, A. A. Faust, T. Omori, C. R. Jones, Abish Malik, C. Hartmann, D. E. Plane, G. P. Siroli, L. A. del Pozo, Stephen Hillier, U. Jost, G. M. Dallavalle, R. Mir, R. Hawkings, G. Yekutieli, Hans-Christian Schultz-Coulon, Alan Watson, S. G. Clowes, A. Biguzzi, A. Rooke, Randall Sobie, Michael Schulz, G. D. Lafferty, J. G. Layter, S. Yamashita, A. A. Carter, Ron Folman, Roger Jones, F. G. Oakham, T. Behnke, M. Fierro, J. E.G. Edwards, P. Igo-Kemenes, B. Schmitt, E. L. Barberio, J. Letts, K. Ishii, H. Jeremie, P. E.L. Clarke, M. K. Jones, P. Utzat, S. D. Bird, Kiyotomo Kawagoe, F. X. Gentil, A. Macchiolo, M. Gruwé, C. M. Hawkes, R. E. Hughes-Jones, C. Dallapiccola, J. P. Martin, P. Schenk, S. De Jong, U. Müller, T. J. McMahon, Guenter Duckeck, Richard Nisius, D. Axen, O. Schaile, A. J. Martin, K. Sachs, I. J. Bloodworth, Shlomo Dado, R. K. Carnegie, M. Herndon, A. Jawahery, H. Przysiezniak, Marco Cuffiani, E. do Couto e Silva, A. N. Bell, N. Altekamp, Peter Sherwood, K. Ametewee, Sven Menke, Yoram Rozen, R. J. Barlow, H. Mes, I. P. Duerdoth, Gideon Alexander, Alexander Wagner, G. G. Hanson, D. J. Miller, M. Foucher, Paolo Capiluppi, C. K. Hargrove, Tara Shears, J. Ludwig, P. Fath, K. Runge, P. Bock, C. Sbarra, P. A. Hart, Ehud Duchovni, J. Lauber, G. Giacomelli, Otmar Biebel, D. Karlen, M. J. Pearce, M. Jimack, M. S. Dixit, Frans Meijers, A. Michelini, B. Stockhausen, Paul Kyberd, F. K. Loebinger, W. J. McDonald, Daniel Lellouch, S. M. Gascon-Shotkin, B. C. Shen, D. Rigby, R. J. Hemingway, Giora Mikenberg, J. Steuerer, Satoshi Tanaka, T. Kobayashi, Takehiko Mori, Matthias Schröder, Joleen Pater, Siegfried Bethke, A. K. Honma, B. Nijjhar, V. Zacek, W. G. Scott, M. Thiergen, H. Lafoux, S. D. Talbot, I. Nakamura, R. Giacomelli, B. W. Kennedy, M. Schumacher, E. Lefebvre, P. Jovanovic, James Pinfold, D. Eatough, S. B. Anderson, S. Braibant, A. D. Schaile, P. Szymanski, Gabriella Pasztor, Matthew Evans, D. Chrisman, G. D. Long, Austin Ball, F. Odorici, Volker Blobel, Peter Krieger, N. K. Watson, W. Mohr, D. G. Fong, C. Lewis, D. Glenzinski, Dezso Horvath, A. M. Rossi, Stefan Schmitt, M. J. Losty, Jean-Arcady Meyer, G. A. Snow, C. P. Ward, John Allison, Stephen Lloyd, T. Tsukamoto, P. M. Watkins, Manuella Vincter, A. Posthaus, Alessandro Montanari, S. Söldner-Rembold, J. Gascon, T. J. Smith, Stan Bentvelsen, P. Gagnon, P. Mättig, R. W. Springer, W. Matthews, Shoji Asai, Norbert Wermes, Sherry Towers, T. Kawamoto, R. G. Kellogg, M. A. Thomson, E. K. U. Gross, M. Steiert, A. Sittler, Csaba Hajdu, A. Gaidot, Georges Azuelos, M. Sproston, P. Poffenberger, A. S. Turcot, Stefano Marcellini, S. Orito, E. Tsur, H. M. Bosch, F. Fiedler, M. Verzocchi, Silvia Arcelli, K. W. Bell, J. Pálinkás, M. Rosvick, J. C. Hill, J. W. Gary, Misao Sasaki, N. I. Geddes, Michael Hildreth, D. S. Koetke, M. Hapke, Marcello Mannelli, E. A. Mckigney, D. E. Hutchcroft, P. Schütz, M. Kolrep, N. L. Rodning, W. P. Lai, D. L. Rees, B. Poli, M. J. Oreglia, F. Scharf, German Martinez, J. M. Roney, H. M. Fischer, J. R. Carter, G. N. Patrick, S. A. Robins, Stefan Kluth, P. O. Estabrooks, Shlomit Tarem, A. I. McNab, J. Goldberg, B. Nellen, H. G. Evans, S. W. O'Neale, M. J. Goodrick, I. Cohen, Gunter Wolf, K. Ackerstaff, K. J. Anderson, C. Y. Chang, P. Taras, Michael Kobel, Julie Kirk, K. Stephens, V. Gibson, T. R. Junk, I. Trigger, D. R. Ward, T. Kress, U. Ruppel, M. R. Ingram, S. Robertson, Gregor Herten, B. Wilkens, P. S. Wells, J. E. Pilcher, N. J. Oldershaw, Terry Richard Wyatt, J. E. Bloomer, G. W. Wilson, M. Hauschild, S. A. Wotton, C. Markus, G. T. Jones, E. H. Vokurka, M. Fanti, D. M. Strom, M. Boutemeur, F. S. Merritt, Robert McPherson, R. Rylko, Mathieu Doucet, R. D. Heuer, J. Bechtluft, J. A. McKenna, Fabrizio Fabbri, M. Bobinski, J. A. Wilson, A. Macpherson, R. Bartoldus, P. Scharff-Hansen, R. Van Kooten, Richard Keeler, H. O. Ogren, Christoph Geich-Gimbel, D. Lazic, J. E. Conboy, A. Fürtjes, R. Howard, A. M. Smith, J. S. White, J. Grunhaus, G. Vasseur, F. Wäckerle, Andris Skuja, D. M. Gingrich, Sachio Komamiya, S. Petzold, Theodoros Geralis, E. Ros, Tetsuro Mashimo, P. Berlich, T. P. Kokott, K. Nagai, D. R. Rust, W. Gorn, M. F. Turner-Watson, M. Morii, Peter R Hobson, D. Zer-Zion, P. Routenburg, A. M. Lee, and E. von Törne
Subjects: Quark, Physics, Density matrix, Particle physics, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Hadron, D-STAR, Polarization (waves), Helicity, Nuclear physics, High Energy Physics::Experiment, Particle Physics - Experiment
Abstract: Measurements of helicity density matrix elements have been made for the φ(1020), D*± and B* vector mesons in multihadronic Z0 decays in the OPAL experiment at LEP. Results for inclusive φ produced with high energy show evidence for production preferentially in the helicity zero state, with ρ00 = 0.54 ± 0.08, compared to the value of 1/3 expected for no spin alignment. The corresponding element for the D*± has a value of 0.40 ± 0.02, also suggesting a deviation from 1/3. The B* result, with ρ00 = 0.36 ± 0.09, is consistent with no spin alignment. Off-diagonal elements have been measured for the f and D* mesons; for the D* the element Re ρ1−1 is non-zero, indicating non-independent fragmentation of the primary quarks.
Published: 1997
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234. A measurement of |Vcb| using decays

Author: A. I. McNab, A. S. Turcot, J. Goldberg, F. Fiedler, S. Yamashita, B. Nellen, P. Igo-Kemenes, Gideon Bella, H. J. Burckhart, K. Ishii, Jacqueline Batley, H. Jeremie, R. E. Hughes-Jones, M. Kolrep, K. Sachs, Shlomo Dado, M. F. Turner-Watson, M. Morii, H. G. Evans, P. Schenk, P. E.L. Clarke, M. K. Jones, Peter R Hobson, O. Schaile, M. Hapke, Achim Stahl, G. Azuelos, M. J. Goodrick, I. Cohen, J. P. Martin, S. De Jong, E. do Couto e Silva, P. Routenburg, R. Van Kooten, H. Przysiezniak, Sachio Komamiya, T. Omori, D. E. Hutchcroft, O. C. Cooke, A. N. Bell, Theodoros Geralis, E. Ros, A. T. Watson, Hans-Christian Schultz-Coulon, Randall Sobie, Michael Schulz, G. D. Lafferty, G. G. Hanson, G. Giacomelli, Reda Tafirout, Klaus Kurt Desch, Giora Mikenberg, M. S. Dixit, Frans Meijers, Sven Menke, C. Y. Chang, P. G. Estabrooks, C. R. Jones, M. J. Oreglia, T. P. Kokott, A. Rooke, J. G. Layter, J. von Krogh, W. Matthews, P. S. Wells, P. Taras, Michael Kobel, Gunter Wolf, F. X. Gentit, A. J. Martin, R. K. Keeler, F. Wäckerle, Ekg Sarkisyan, P. W. Jeffreys, R. J. Hawkings, K. Ackerstaff, Terry Richard Wyatt, D. M. Gingrich, H. Mes, M. A. Thomson, J. E. Bloomer, M. Boutemeur, Ehud Duchovni, D. Rigby, R. J. Hemingway, S. Braibant, J. E.G. Edward, Julie Kirk, H. M. Fischer, T. Behnke, Guenter Duckeck, M. Jimack, P. Fath, L. A. del Pozo, C. Sbarra, U. Ruppel, M. R. Ingram, Matthias Schröder, A. D. Schaile, Gabriella Pasztor, P. Berlich, W. R. Gibson, P. M. Watkins, Paolo Giacomelli, M. Thiergen, E. K. U. Gross, J. R. Carter, J. Grunhaus, G. Yekutieli, G. N. Patrick, J. Bechtluft, A. Michelini, J. A. McKenna, Dave Charlton, B. T. Bouwens, M. Hansroul, P. Poffenberger, M. Gruwé, C. M. Hawkes, A. A. Carter, J. J. Ward, B. Stockhausen, Paul Kyberd, P. Vikas, S. B. Anderson, G. A. Snow, C. P. Ward, F. K. Loebinger, P. Szymanski, Ron Folman, Roger Jones, B. W. Kennedy, P. Jovanovic, R. M. Brown, Lorne Levinson, Otmar Biebel, Satoshi Tanaka, T. Kobayashi, C. Burgard, D. Lanske, P. Schütz, R. J. Homer, I. J. Bloodworth, R. Bartoldus, S. Söldner-Rembold, B. J. King, H. O. Ogren, P. Utzat, Christoph Geich-Gimbel, R. Bürgin, Richard Nisius, A. Gaidot, A. Skillman, Austin Ball, J. Steuerer, F. S. Merritt, D. M. Strom, T. J. McMahon, Stan Bentvelsen, Peter Krieger, M. S. Proston, Marco Cuffiani, LP Duerdoth, Stefan Kluth, C. Hartmann, D. E. Plane, Shlomit Tarem, R. K. Carnegie, M. Schumacher, Joleen Pater, E. Lefebvre, S. Robertson, P. Pfeifenschneider, Stephen Hillier, Gregor Herten, U. Müller, Silvia Arcelli, J. Letts, M. Herndon, G. M. Dallavalle, S. A. Robins, J. E. Conboy, A. Fürtjes, M. Bobinski, J. A. Wilson, R. Rylko, J. Patt, F. Odorici, Manuella Vincter, Norbert Wermes, Alessandro Montanari, Sherry Towers, N. K. Watson, B. Wilkens, K. Ametewee, T. Kawamoto, R. Giacomelli, Robert McPherson, M. Fierro, S. W. O'Neale, A. Biguzzi, Gideon Alexander, K. J. Anderson, Paolo Capiluppi, D. Lazic, S. Orito, S. R. Lautenschlager, H. A. Neal, U. Jost, R. Mir, E. A. Mckigney, M. Rosvick, Yoram Rozen, J. E. Pilcher, Mathieu Doucet, C. K. Hargrove, R. D. Heuer, M. Foucher, D. Chrisman, Tara Shears, Claire Shepherd-Themistocleous, T. Hilse, W. P. Lai, O. Runolfsson, W. Mohr, N. J. Oldershaw, Volker Blobel, Fabrizio Fabbri, P. A. Hart, T. J. Smith, A. Posthaus, K. Stephens, J. M. Roney, C. Beeston, Stephen Lloyd, M. J. Pearce, R. Howard, J. S. White, Claudio Grandi, K. Nagai, F. G. Oakham, B. Schmitt, E. L. Barberio, D. R. Rust, V. Gibson, C. Dallapiccola, D. Karlen, D. L. Rees, T. R. Junk, N. Altekamp, A. Joly, I. Trigger, R. J. Barlow, D. R. Ward, H. Lafoux, D. J. Miller, T. Kress, F. Scharf, German Martinez, A. K. Honma, Daniel Lellouch, G. W. Wilson, M. Hauschild, A. M. Lee, S. A. Wotton, Takehiko Mori, C. Markus, E. von Törne, G. T. Jones, E. H. Vokurka, V. Zacek, R. Lahmann, John Allison, D. C. Imrie, Stefan Schmitt, N. I. Geddes, Michael Hildreth, R. G. Kellogg, M. Steiert, P. Mättig, Shoji Asai, Csaba Hajdu, G. P. Siroli, Stefano Marcellini, N. L. Rodning, B. Poli, S. M. Gascon-Shotkin, Kiyotomo Kawagoe, Matthew Evans, A. M. Rossi, T. Tsukamoto, P. Scharff-Hansen, A. M. Smith, D. Axen, A. Jawahery, G. Vasseur, Peter Sherwood, Andris Skuja, Alexander Wagner, S. Petzold, J. Ludwig, G. D. Long, K. Runge, P. Bock, Tetsuro Mashimo, J. Lauber, W. Gorn, F. Strumia, S. D. Talbot, James Pinfold, D. G. Fong, C. Lewis, J. Gascon, W. J. McDonald, A. Malik, B. C. Shen, J. W. Gary, D. S. Koetke, Marcello Mannelli, P. Gagnon, A. Sittler, Siegfried Bethke, B. Nijjhar, W. G. Scott, I. Nakamura, H. M. Bosch, D. Glenzinski, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, R. W. Springer, E. Tsur, M. Verzocchi, K. W. Bell, J. Pálinkás, J. C. Hill, and Misao Sasaki
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Form factor (quantum field theory), Electron, Rest frame, Nuclear physics, Recoil, High Energy Physics::Experiment, Nuclear Experiment
Abstract: We report a measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb|. From approximately 4.2 million hadronic Z0 decays recorded with the OPAL deteector, a sample is selected containing 1251 ± 125 B 0 → D ∗+ l − ν l candidates, where l is either an electron or a muon. Using Heavy Quark Effective Theory calculations for the decay form factor at zero recoil of the D∗+ meson in the B 0 rest frame, we derive |Vcb| = [36.0 ± 2.1 (stat) ± 2.4 (syst) ± 1.2 (theory)] × 10−3.
Published: 1997
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235. An improved measurement of $R_b$ using a double tagging method

Author: S. Yamashita, P. Igo-Kemenes, Richard Keeler, D. M. Strom, R. Howard, R. Rylko, K. Ishii, H. Jeremie, R. E. Hughes-Jones, C. Dallapiccola, Takehiko Mori, M. Hapke, H. Mes, I. P. Duerdoth, P. S. Wells, A. Biguzzi, Terry Richard Wyatt, J. E. Bloomer, V. Zacek, D. E. Hutchcroft, P. Fath, O. Schaile, Silvia Arcelli, Claire Shepherd-Themistocleous, E. do Couto e Silva, Dave Charlton, B. Stockhausen, Paul Kyberd, F. K. Loebinger, K. Sachs, Shlomo Dado, Robert McPherson, N. Altekamp, J. Steuerer, Sven Menke, R. Bürgin, Mathieu Doucet, E. A. Mckigney, Joleen Pater, Stefan Schmitt, R. D. Heuer, R. J. Barlow, A. S. Turcot, M. J. Oreglia, R. Giacomelli, T. J. Smith, Stefan Kluth, Fabrizio Fabbri, W. P. Lai, F. Fiedler, Shlomit Tarem, Giora Mikenberg, D. J. Miller, T. Behnke, P. Mättig, Shoji Asai, J. Grunhaus, J. M. Roney, K. Nagai, I. J. Bloodworth, S. Braibant, John Allison, A. D. Schaile, T. Kawamoto, Gabriella Pasztor, Gideon Bella, D. R. Rust, Kiyotomo Kawagoe, H. J. Burckhart, P. Gagnon, M. Schumacher, E. Lefebvre, M. Gruwé, Andris Skuja, M. Kolrep, Jacqueline Batley, J. R. Carter, G. N. Patrick, S. Petzold, P. Schenk, C. M. Hawkes, K. Ackerstaff, G. D. Long, K. Stephens, R. G. Kellogg, Yoram Rozen, M. Steiert, F. Odorici, G. A. Snow, C. P. Ward, Tetsuro Mashimo, Otmar Biebel, Csaba Hajdu, T. Omori, A. Sittler, P. G. Estabrooks, A. M. Lee, Richard Nisius, P. Poffenberger, Stefano Marcellini, M. Foucher, S. B. Anderson, S. Söldner-Rembold, P. Szymanski, E. von Törne, S. Robertson, V. Gibson, P. M. Watkins, H. M. Bosch, C. R. Jones, Marco Cuffiani, D. Karlen, Gregor Herten, W. Gorn, D. Rigby, R. J. Hemingway, A. Joly, G. W. Wilson, J. Letts, Stan Bentvelsen, U. Müller, Norbert Wermes, T. R. Junk, A. J. Martin, Sherry Towers, A. I. McNab, P. Schütz, J. Goldberg, D. Axen, I. Trigger, R. Van Kooten, A. Jawahery, Hans-Christian Schultz-Coulon, B. Nellen, Randall Sobie, Michael Schulz, G. D. Lafferty, M. F. Turner-Watson, S. Orito, B. Wilkens, D. R. Ward, T. Kress, M. Morii, B. W. Kennedy, James Pinfold, M. Rosvick, Achim Stahl, Peter R Hobson, P. Jovanovic, U. Ruppel, Peter Sherwood, R. Lahmann, M. R. Ingram, D. G. Fong, C. Lewis, P. Routenburg, Alexander Wagner, H. G. Evans, M. J. Goodrick, J. Gascon, C. K. Hargrove, Guenter Duckeck, Sachio Komamiya, Theodoros Geralis, E. Ros, J. E. Pilcher, Austin Ball, J. Ludwig, K. Runge, I. Cohen, P. Bock, G. P. Siroli, Matthias Schröder, N. I. Geddes, J. Lauber, N. J. Oldershaw, Peter Krieger, Michael Hildreth, M. Thiergen, H. Lafoux, T. P. Kokott, J. W. Gary, D. S. Koetke, E. Gross, Marcello Mannelli, D. Lellouch, N. L. Rodning, F. Strumia, S. D. Talbot, F. Wäckerle, B. Poli, Manuella Vincter, D. M. Gingrich, P. Scharff-Hansen, Alessandro Montanari, Tara Shears, P. A. Hart, A. M. Smith, S. M. Gascon-Shotkin, U. Jost, P. Berlich, R. Mir, G. Vasseur, M. J. Pearce, Matthew Evans, A. M. Rossi, M. Hauschild, T. Tsukamoto, Paolo Giacomelli, S. W. O'Neale, M. Hansroul, K. J. Anderson, S. A. Wotton, C. Markus, H. M. Fischer, G. T. Jones, E. H. Vokurka, C. Y. Chang, F. G. Oakham, B. Schmitt, S. A. Robins, C. Burgard, E. L. Barberio, R. J. Homer, P. Taras, Michael Kobel, P. Pfeifenschneider, Julie Kirk, J. Patt, F. S. Merritt, J. Bechtluft, J. A. McKenna, R. Bartoldus, H. O. Ogren, Christoph Geich-Gimbel, J. E. Conboy, N. K. Watson, F. X. Gentit, A. Fürtjes, W. Mohr, W. J. McDonald, B. C. Shen, Siegfried Bethke, A. K. Honma, B. Nijjhar, A. Posthaus, W. G. Scott, I. Nakamura, D. Glenzinski, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, R. W. Springer, D. L. Rees, Georges Azuelos, E. Tsur, M. Verzocchi, K. W. Bell, J. Pálinkás, J. C. Hill, Misao Sasaki, F. Scharf, German Martinez, W. Matthews, M. A. Thomson, A. Gaidot, M. Sproston, C. Sbarra, G. Yekutieli, A. A. Carter, Ron Folman, Roger Jones, B. J. King, P. Utzat, T. J. McMahon, R. K. Carnegie, M. Herndon, M. Bobinski, J. A. Wilson, D. Lazic, O. C. Cooke, J. von Krogh, R. J. Hawkings, L. A. del Pozo, Ehud Duchovni, M. Jimack, A. Michelini, D. C. Imrie, Satoshi Tanaka, J. S. White, M. Boutemeur, T. Kobayashi, M. Fierro, J. E.G. Edwards, S. R. Lautenschlager, H. A. Neal, T. Hilse, O. Runolfsson, D. Chrisman, Volker Blobel, C. Beeston, Claudio Grandi, Stephen Lloyd, Ekg Sarkisyan, P. W. Jeffreys, Robert M Brown, K. Ametewee, Gideon Alexander, Paolo Capiluppi, J. J. Ward, P. Vikas, D. Lanske, W. R. Gibson, B. T. Bouwens, Lorne Levinson, A. Skillman, Abish Malik, C. Hartmann, D. E. Plane, Stephen Hillier, G. M. Dallavalle, Alan Watson, G. G. Hanson, Reda Tafirout, Klaus Kurt Desch, G. Wolf, G. Giacomelli, M. S. Dixit, Frans Meijers, P. E.L. Clarke, M. K. Jones, J. P. Martin, S. De Jong, H. Przysiezniak, A. N. Bell, A. Rooke, and J. G. Layter
Subjects: Nuclear physics, Physics, Top quark, Particle physics, Physics and Astronomy (miscellaneous), Meson, Bottom quark, Particle Physics - Experiment
Published: 1997
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236. Colonization with antibiotic-resistant Gram-negative organisms in a pediatric intensive care unit

Author: Toyoko S. Yamashita, Lynn Vilt, Jeffrey L. Blumer, and Philip Toltzis
Subjects: medicine.medical_specialty, Time Factors, medicine.drug_class, Antibiotics, Microbial Sensitivity Tests, Intensive Care Units, Pediatric, Critical Care and Intensive Care Medicine, law.invention, Antibiotic resistance, Risk Factors, law, Nasopharynx, Epidemiology, Prevalence, medicine, Humans, Colonization, Prospective Studies, Child, Intensive care medicine, Pediatric intensive care unit, Cross Infection, Infection Control, business.industry, Public health, Drug Resistance, Microbial, Intensive care unit, Logistic Models, Child, Preschool, Carrier State, Observational study, Gram-Negative Bacterial Infections, business, Digestive System
Abstract: To measure the prevalence of colonization with antibiotic-resistant Gram-negative organisms and its association with potential risk factors, including antibiotic exposure, in a pediatric intensive care unit (ICU).Prospective, observational study.A 16-bed tertiary care pediatric ICU.All children admitted to the pediatric ICU for24 hrs over a 5-month period.Two hundred ninety-six patients, approximately half of all patients admitted to the ICU, were enrolled in the study; 236 patients had sufficient data collected for analysis and were prospectively examined for nasopharyngeal and gastrointestinal colonization by antibiotic-resistant Gram-negative organisms (ceftazidime minimal inhibitory concentration of16 micrograms/mL, or tobramycin minimal inhibitory concentration8 micrograms/mL). Association between colonization and potential predisposing factors including demographics, diagnosis, Pediatric Risk of Mortality (PRISM) score, invasive instrumentation, and prior ICU antibiotic exposure was assessed. More than 20% of patients were found to be colonized with an antibiotic-resistant Gram-negative organism. Examination of the timing of colonization indicated that more than half were identified within 72 hrs of admision. Colonization was associated by unadjusted analysis to prior ICU antibiotic exposure, as well as by factors associated with the severity of illness (PRISM score and invasive instrumentation) and young age. However, when the independence of these factors was tested by logistic regression, prior antibiotic exposure was no longer associated with resistant organism colonization.These data suggest that antibiotic-resistant Gram-negative organisms are a significant risk to intensively III children and that in many instances, they are imported into the unit or rapidly acquired from environmental reservoirs. Since risk factors for colonization are multiple, policies confined to antibiotic utilization within the ICU may have fixed, and possibly limited, benefit in their control.
Published: 1997
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237. Search for charged scalar leptons using the OPAL detector at GeV

Author: D. Rigby, R. J. Hemingway, V Zacek, B. W. Kennedy, R. Bartoldus, R. Lahmann, D. C. Imrie, G. P. Siroli, John Allison, P. Jovanovic, Austin Ball, J. Grunhaus, Christoph Geich-Gimbel, Peter Krieger, Manuella Vincter, Alessandro Montanari, D. Axen, A. Jawahery, R. G. Kellogg, M. Steiert, Gunter Wolf, Tara Shears, A. Biguzzi, K. Ackerstaff, Peter Sherwood, Alexander Wagner, Csaba Hajdu, K. Sachs, Shlomo Dado, I. J. Bloodworth, J. E. Conboy, A. Fürtjes, J. Ludwig, Claire Shepherd-Themistocleous, H.O Ogren, Stefano Marcellini, S. Robertson, K. Runge, P. Bock, Gregor Herten, Yoram Rozen, M. Foucher, P. A. Hart, Gideon Bella, M. J. Pearce, B. Wilkens, Giora Mikenberg, D. Karlen, H. J. Burckhart, Jacqueline Batley, Sachio Komamiya, Theodoros Geralis, E. Ros, A. T. Watson, T. Behnke, Daniel Lellouch, S. Braibant, A. D. Schaile, J. E. Pilcher, T. P. Kokott, G. Azuelos, Takehiko Mori, C. Sbarra, T. Omori, Gabriella Pasztor, R. W. Springer, M. Gruwé, C. M. Hawkes, G. A. Snow, C. P. Ward, G. Yekutieli, G. G. Hanson, C. R. Jones, U. Müller, S. Söldner-Rembold, P. Gagnon, Richard Nisius, A. A. Carter, Ron Folman, Roger Jones, A. Sittler, G. Giacomelli, C. Dallapiccola, Stefan Schmitt, A. I. McNab, J. Goldberg, Silvia Arcelli, Marco Cuffiani, H. M. Bosch, B. Nellen, B. J. King, M. Boutemeur, F. S. Merritt, Reda Tafirout, Klaus Kurt Desch, E. Tsur, M. S. Dixit, A. J. Martin, S. W. O'Neale, P. Utzat, Frans Meijers, Dave Charlton, M. Verzocchi, A. S. Turcot, F. Fiedler, J. Lauber, K. J. Anderson, P. Mättig, S Anderson, M. F. Turner-Watson, K. W. Bell, M. Morii, J. Pálinkás, A. Rooke, Peter R Hobson, J. G. Layter, Shoji Asai, P. Routenburg, R. Bürgin, N. Altekamp, F. Strumia, G. W. Wilson, E. A. Mckigney, S. D. Talbot, O. C. Cooke, M. Hauschild, J. C. Hill, S. A. Wotton, P. Poffenberger, W. R. Gibson, Misao Sasaki, H. G. Evans, J. Bechtluft, R. J. Barlow, W. P. Lai, J. A. McKenna, M. J. Goodrick, P. E.L. Clarke, D. J. Miller, C. Markus, M. K. Jones, P. Schütz, B. T. Bouwens, J. P. Martin, I. Cohen, M. Kolrep, S. De Jong, G. T. Jones, E. H. Vokurka, R. M. Brown, Lorne Levinson, A. Joly, J. M. Roney, J. von Krogh, C. K. Hargrove, Hans-Christian Schultz-Coulon, Randall Sobie, Michael Schulz, G. D. Lafferty, H. Przysiezniak, N. J. Oldershaw, C. Y. Chang, A. N. Bell, M. Hapke, P. Schenk, Paolo Giacomelli, D. E. Hutchcroft, A. Skillman, P. Taras, Michael Kobel, M. Hansroul, B. Stockhausen, Paul Kyberd, F. K. Loebinger, C. Hartmann, D. E. Plane, P. S. Wells, Stephen Hillier, Julie Kirk, J. Steuerer, Joleen Pater, R. J. Hawkings, Guenter Duckeck, C. Burgard, W. J. McDonald, G. M. Dallavalle, B. C. Shen, Terry Richard Wyatt, M. J. Oreglia, R. Giacomelli, L. A. del Pozo, R. J. Homer, Siegfried Bethke, A. K. Honma, B. Nijjhar, W. G. Scott, J. E. Bloomer, I. Nakamura, Andris Skuja, S. Petzold, G. D. Long, Tetsuro Mashimo, D. Glenzinski, Dezso Horvath, M. J. Losty, N. I. Geddes, Michael Hildreth, Jean-Arcady Meyer, U. Jost, R. Mir, Stefan Kluth, J. R. Carter, N. L. Rodning, Shlomit Tarem, B. Poli, G. N. Patrick, W. Gorn, P. Szymanski, Matthias Schröder, F. G. Oakham, B. Schmitt, Otmar Biebel, M. Thiergen, E. L. Barberio, S. M. Gascon-Shotkin, Stan Bentvelsen, P. Pfeifenschneider, R. Howard, J. S. White, J. Patt, Matthew Evans, A. M. Rossi, T. Tsukamoto, J. Letts, H. M. Fischer, D. M. Strom, Norbert Wermes, Sherry Towers, T. Kawamoto, P. Scharff-Hansen, R. Rylko, S. A. Robins, S. Orito, M. Rosvick, A. M. Smith, Achim Stahl, James Pinfold, D. G. Fong, C. Lewis, J. Gascon, J. W. Gary, D. S. Koetke, Marcello Mannelli, Ekg Sarkisyan, P. W. Jeffreys, J. J. Ward, P. Vikas, D. Lanske, S. R. Lautenschlager, H. A. Neal, T. Hilse, T. J. McMahon, O. Runolfsson, R. K. Carnegie, M. Herndon, C. Beeston, U. Ruppel, Claudio Grandi, M. Bobinski, J. A. Wilson, M. R. Ingram, D. Lazic, M. Fierro, J. E.G. Edwards, T. J. Smith, K. Stephens, V. Gibson, T. R. Junk, I. Trigger, D. R. Ward, T. Kress, D. Chrisman, Volker Blobel, Stephen Lloyd, S. Yamashita, P. Igo-Kemenes, Ehud Duchovni, K. Ishii, H. Jeremie, M. Jimack, A. Michelini, R. E. Hughes-Jones, O. Schaile, E. do Couto e Silva, Satoshi Tanaka, T. Kobayashi, Sven Menke, K. Ametewee, Gideon Alexander, Paolo Capiluppi, P. G. Estabrooks, R. K. Keeler, P. M. Watkins, Kiyotomo Kawagoe, D. L. Rees, F. Scharf, German Martinez, N. K. Watson, W. Mohr, A. Posthaus, H. Mes, I. P. Duerdoth, P. Fath, R. Van Kooten, W. Matthews, M. A. Thomson, E. K. U. Gross, M. Sproston, F. Wäckerle, D. M. Gingrich, P. Berlich, M. Schumacher, E. Lefebvre, F. Odorici, K. Nagai, D. R. Rust, A. M. Lee, E. von Törne, Robert McPherson, Mathieu Doucet, R. D. Heuer, and Fabrizio Fabbri
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Missing energy, Muon, High Energy Physics::Phenomenology, Detector, Scalar (physics), Electron, Nuclear physics, Selectron tube, High Energy Physics::Experiment, Minimal Supersymmetric Standard Model, Lepton
Abstract: A search for pair-produced scalar electron, muon and tau leptons has been performed using a data sample corresponding to an integrated luminosity of 10.1 pb−1 at a centre-of-mass energy of s =161 GeV collected with the OPAL detector at LEP. Such events would yield an acoplanar pair of leptons with significant missing energy in the final state. No excess of acoplanar lepton pair events has been observed in the data. Limits are presented on the production cross-sections of charged scalar leptons. Exclusion regions are also presented in the framework of the Minimal Supersymmetric Standard Model. A 95% C.L. lower limit on the right-handed selectron mass of 71.5 GeV is obtained for tan β ≥ 1.5, |μ| ≥ 200 GeV and m χ 1 0 = 12.0 GeV . A 95% C.L. lower limit on the right-handed smuon mass of 51.0 GeV is obtained for m χ 1 0 = 12.0 GeV , independent of tan β and μ.
Published: 1997
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238. Inclusive jet production in photon-photon collisions at $\sqrt s_{\rm ee}=130$ and 136 GeV

Author: G. G. Hanson, G. Giacomelli, T. Behnke, D. M. Strom, M. S. Dixit, Frans Meijers, Silvia Arcelli, R. Rylko, Stefan Schmitt, S. Yamashita, U. Müller, M. Gruwé, C. M. Hawkes, S. R. Lautenschlager, H. A. Neal, P. Igo-Kemenes, K. Ishii, H. Jeremie, P. E.L. Clarke, M. K. Jones, D. Rigby, R. J. Hemingway, W. J. McDonald, B. C. Shen, N. J. Oldershaw, T. J. Smith, P. S. Wells, Terry Richard Wyatt, J. E. Bloomer, R. E. Hughes-Jones, Richard Nisius, J. P. Martin, A. J. Martin, Paolo Giacomelli, M. Hansroul, S. Braibant, A. D. Schaile, Gabriella Pasztor, T. Hilse, O. Runolfsson, B. W. Kennedy, A. I. McNab, S. De Jong, P. Jovanovic, J. Goldberg, O. Schaile, Marco Cuffiani, Dave Charlton, Austin Ball, E. do Couto e Silva, C. Burgard, R. Howard, A. S. Turcot, J. S. White, P. Poffenberger, F. Fiedler, B. Nellen, P. Mättig, O. C. Cooke, Siegfried Bethke, A. K. Honma, B. Nijjhar, W. G. Scott, Peter Krieger, Shoji Asai, M. Hapke, I. Nakamura, R. Bürgin, E. A. Mckigney, H. Przysiezniak, C. K. Hargrove, Sven Menke, R. Bartoldus, C. Beeston, Matthias Schröder, D. E. Hutchcroft, G. A. Snow, C. P. Ward, M. F. Turner-Watson, R. J. Homer, Claudio Grandi, Manuella Vincter, Alessandro Montanari, M. Thiergen, M. Morii, A. N. Bell, Peter R Hobson, M. J. Oreglia, W. P. Lai, I. J. Bloodworth, U. Jost, R. Lahmann, P. Schütz, S. Söldner-Rembold, H. G. Evans, R. Mir, G. W. Wilson, M. Hauschild, D. Glenzinski, D. C. Imrie, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, John Allison, P. Routenburg, Claire Shepherd-Themistocleous, Gideon Bella, H. O. Ogren, S. M. Gascon-Shotkin, M. J. Goodrick, Christoph Geich-Gimbel, I. Cohen, Sachio Komamiya, S. A. Wotton, Theodoros Geralis, C. Markus, E. Ros, A. T. Watson, James Pinfold, H. J. Burckhart, Jacqueline Batley, J. von Krogh, J. R. Carter, H. Mes, A. Rooke, G. T. Jones, J. G. Layter, G. P. Siroli, G. N. Patrick, P. Gagnon, I. P. Duerdoth, J. E. Conboy, Otmar Biebel, T. P. Kokott, E. H. Vokurka, Gunter Wolf, D. G. Fong, C. Lewis, R. W. Springer, K. Ackerstaff, J. M. Roney, M. Kolrep, T. Omori, Yoram Rozen, Tara Shears, R. G. Kellogg, P. Fath, M. Steiert, Csaba Hajdu, F. G. Oakham, R. J. Hawkings, Matthew Evans, A. Sittler, B. Schmitt, E. L. Barberio, A. M. Rossi, Achim Stahl, P. A. Hart, A. Fürtjes, Stefano Marcellini, J. Gascon, C. Y. Chang, M. Foucher, T. Tsukamoto, Georges Azuelos, E. Tsur, C. Dallapiccola, P. Schenk, C. R. Jones, Kiyotomo Kawagoe, M. Verzocchi, K. W. Bell, K. Sachs, S. Robertson, S. B. Anderson, L. A. del Pozo, M. J. Pearce, M. Fierro, J. E.G. Edwards, A. Malik, Gregor Herten, Shlomo Dado, J. Letts, H. M. Bosch, J. Pálinkás, J. Grunhaus, B. Stockhausen, Paul Kyberd, P. Szymanski, F. K. Loebinger, Ekg Sarkisyan, P. W. Jeffreys, T. J. McMahon, J. Steuerer, N. I. Geddes, Norbert Wermes, Sherry Towers, B. Wilkens, P. Taras, T. Kawamoto, P. G. Estabrooks, Michael Hildreth, Michael Kobel, N. Altekamp, Joleen Pater, J. C. Hill, Misao Sasaki, M. Boutemeur, F. S. Merritt, D. Karlen, N. L. Rodning, R. Giacomelli, R. K. Carnegie, S. Orito, M. Rosvick, R. J. Barlow, R. K. Keeler, J. E. Pilcher, B. Poli, M. Herndon, D. Axen, A. Jawahery, D. J. Miller, Julie Kirk, U. Ruppel, M. R. Ingram, J. W. Gary, J. Bechtluft, J. A. McKenna, J. J. Ward, Daniel Lellouch, M. Bobinski, P. Vikas, J. A. Wilson, D. Lanske, A. Joly, Peter Sherwood, H. M. Fischer, P. M. Watkins, Stan Bentvelsen, Takehiko Mori, Giora Mikenberg, Alexander Wagner, D. S. Koetke, M. Schumacher, J. Ludwig, K. Runge, P. Bock, Marcello Mannelli, Stefan Kluth, S. A. Robins, J. Lauber, V. Zacek, E. Lefebvre, Shlomit Tarem, F. X. Gentit, Andris Skuja, S. W. O'Neale, P. Pfeifenschneider, D. Lazic, K. J. Anderson, F. Odorici, F. Strumia, S. D. Talbot, S. Petzold, C. Sbarra, J. Patt, G. D. Long, K. Stephens, Hans-Christian Schultz-Coulon, Tetsuro Mashimo, G. Yekutieli, Randall Sobie, Michael Schulz, G. D. Lafferty, V. Gibson, T. R. Junk, A. A. Carter, Ron Folman, Roger Jones, I. Trigger, W. Gorn, Guenter Duckeck, D. R. Ward, T. Kress, B. J. King, P. Utzat, H. Lafoux, P. Scharff-Hansen, A. M. Smith, G. Vasseur, K. Ametewee, Gideon Alexander, Paolo Capiluppi, Ehud Duchovni, M. Jimack, A. Michelini, Satoshi Tanaka, T. Kobayashi, D. Chrisman, Volker Blobel, Stephen Lloyd, Robert M Brown, Robert McPherson, Mathieu Doucet, R. D. Heuer, Fabrizio Fabbri, R. Van Kooten, W. R. Gibson, B. T. Bouwens, F. Wäckerle, D. M. Gingrich, Lorne Levinson, P. Berlich, A. Skillman, K. Nagai, Reda Tafirout, Klaus Kurt Desch, D. R. Rust, A. M. Lee, E. von Törne, C. Hartmann, D. E. Plane, Stephen Hillier, G. M. Dallavalle, N. K. Watson, W. Mohr, A. Posthaus, W. Matthews, M. A. Thomson, E. K. U. Gross, A. Gaidot, M. Sproston, D. L. Rees, F. Scharf, and German Martinez
Subjects: Physics, Nuclear physics, Transverse plane, Photon, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Detector, Perturbative QCD, High Energy Physics::Experiment, HERA, Jet (particle physics), Particle Physics - Experiment
Abstract: The inclusive one- and two-jet production cross-sections are measured in collisions of quasi-real photons radiated from the LEP beams at e+e- centre-of-mass energies √see = 130 and 136 GeV using the OPAL detector at LEP. Hard jets are reconstructed using a cone jet finding algorithm. The differential jet cross-sections dσ/dETjet are compared to next-to-leading order perturbative QCD calculations. Transverse energy flows in jets are studied separately for direct and resolved two-photon events. © Springer-Verlag 1997.
Published: 1997
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239. Measurement of the differences in the total cross section for antiparallel and parallel longitudinal spins and a measurement of parity nonconservation with incident polarized protons and antiprotons at 200 GeV/c

Author: Tatsushi Shima, N. Tanaka, J. Deregel, M. Nessi, Yu A. Matulenko, Yasar Onel, T. Iijima, P. Chaumette, M. D. Corcoran, A. L. Read, Akira Masaike, Yoshitaka Itow, N. Tamura, Jay Roberts, D. G. Underwood, S. Makino, A. Michalowicz, J. Skeens, O. A. Grachov, VL Rykov, F. Luehring, N. I. Belikov, Fujio Takeutchi, G. Durand, T. Yoshida, D. Grosnick, D. Lopiano, H. En'yo, Y. Ohashi, Kozo Miyake, A. de Lesquen, H. Funahashi, Y. Goto, T. Kasprzyk, S. B. Nurushev, K. Imai, D. Hill, K. Kuroda, K. W. Krueger, J. Cranshaw, David Miller, J. L. White, H. M. Spinka, J. D. Cossairt, V. L. Solovyanov, S. Yamashita, F. Nessi-Tedaldi, G. Pauletta, N. Akchurin, A. A. Derevschikov, T. Nagamine, A. Bravar, J. Bystricky, D. I. Patalakha, P. Shanahan, Ryuichi Takashima, J. Sheppard, L. van Rossum, F. Lehar, Kazuo Iwatani, Antonio Villari, J. Fabre, Robert Stanek, P. Schiavon, Norio Saito, A. P. Meschanin, Andrey Vasiliev, Aldo Penzo, C. Nguyen, G. Salvato, A. Yokosawa, and T. Maki
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Spins, Antiproton, Parity (physics), Atomic physics
Published: 1997
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240. Search for the Standard Model Higgs boson in e+e− collisions at =161

Author: C. Y. Chang, K. W. Bell, P. Taras, Michael Kobel, R. W. Springer, N. K. Watson, Julie Kirk, Reda Tafirout, Klaus Kurt Desch, D. Rigby, R. J. Hemingway, B. W. Kennedy, P. Jovanovic, Austin Ball, Peter Krieger, Manuella Vincter, Alessandro Montanari, Robert McPherson, E. Tsur, James Pinfold, U. Jost, R. Mir, F. G. Oakham, B. Schmitt, Mathieu Doucet, R. D. Heuer, Ekg Sarkisyan, M. Verzocchi, J. Pálinkás, C. Hartmann, D. E. Plane, W. Mohr, D. G. Fong, C. Lewis, E. L. Barberio, M. Boutemeur, F. S. Merritt, A. Posthaus, J. C. Hill, J. Gascon, Stephen Hillier, G. M. Dallavalle, A. S. Turcot, F. Fiedler, C. Dallapiccola, Fabrizio Fabbri, J. Grunhaus, Kiyotomo Kawagoe, Misao Sasaki, W. J. McDonald, B. C. Shen, Dave Charlton, S. M. Gascon-Shotkin, Otmar Biebel, P. W. Jeffreys, W. Matthews, A. Biguzzi, N. Altekamp, R. J. Barlow, D. J. Miller, T. J. Smith, K. Stephens, G. W. Wilson, M. Hauschild, R. Van Kooten, M. A. Thomson, D. Glenzinskj, Claire Shepherd-Themistocleous, Siegfried Bethke, A. K. Honma, B. Nijjhar, W. G. Scott, I. Nakamura, S. A. Wotton, S. Braibant, A. D. Schaile, Gabriella Pasztor, E. K. U. Gross, R. Bürgin, H. Mes, C. Markus, V. Gibson, M. Sproston, J. W. Gary, D. S. Koetke, J. A. McKenna, A. Rooke, G. T. Jones, T. R. Junk, I. P. Duerdoth, Sachio Komamiya, Theodoros Geralis, E. Ros, A. T. Watson, Matthew Evans, P. Fath, J. Letts, Dezso Horvath, M. J. Losty, E. H. Vokurka, N. J. Oldershaw, Marcello Mannelli, F. Wäckerle, R. Howard, J. S. White, J. G. Layter, I. Trigger, D. R. Ward, T. Kress, G. A. Snow, S. Yamashita, P. Igo-Kemenes, K. Ishii, C. P. Ward, Norbert Wermes, Sherry Towers, T. Kawamoto, Silvia Arcelli, W. R. Gibson, B. T. Bouwens, A. Joly, A. M. Rossi, T. Tsukamoto, M. Kolrep, Jean-Arcady Meyer, Gideon Bella, H. J. Burckhart, Jacqueline Batley, P. Berlich, S. Orito, M. Rosvick, R. M. Brown, Lorne Levinson, R. Bartoldus, J. J. Ward, P. Vikas, D. Lanske, R. Lahmann, R. E. Hughes-Jones, S. B. Anderson, P. Szymanski, S. W. O'Neale, S. Söldner-Rembold, A. Skillman, G. Azuelos, M. Hapke, P. Pfeifenschneider, K. Nagai, D. C. Imrie, T. Omori, N. I. Geddes, T. Behnke, Michael Hildreth, D. E. Hutchcroft, D. R. Rust, P. Scharff-Hansen, H. O. Ogren, Christoph Geich-Gimbel, D. M. Strom, N. L. Rodning, O. Schaile, C. R. Jones, D. L. Rees, G. P. Siroli, B. Poli, M. J. Oreglia, T. P. Kokott, E. do Couto e Silva, A. M. Lee, R. Rylko, M. F. Turner-Watson, M. Morii, Stan Bentvelsen, F. Scharf, E. von Törne, J. Patt, German Martinez, A. M. Smith, M. Gruwé, C. M. Hawkes, Sven Menke, H. M. Fischer, Peter R Hobson, M. Fierro, J. E.G. Edwards, K. Sachs, Paul Kyberd, F. K. Loebinger, P. Routenburg, D. Chrisman, Andris Skuja, J. E. Conboy, Shlomo Dado, J. Steuerer, E. A. Mckigney, J. R. Carter, A. Fürtjes, Hans-Christian Schultz-Coulon, G. N. Patrick, S. Petzold, Matthias Schröder, U. Ruppel, M. R. Ingram, Randall Sobie, Michael Schulz, G. D. Lafferty, G. D. Long, Tetsuro Mashimo, Volker Blobel, Joleen Pater, S. Robertson, S. R. Lautenschlager, H. A. Neal, Gregor Herten, W. P. Lai, M. Thiergen, G. G. Hanson, R. Giacomelli, Richard Nisius, KJ Anderson, T. Hilse, S. A. Robins, W. Gorn, B. Wilkens, O. Runolfsson, J. Lauber, Paolo Giacomelli, P. S. Wells, Marco Cuffiani, M. Hansroul, Giora Mikenberg, John Allison, G. Giacomelli, J. M. Roney, Guenter Duckeck, Terry Richard Wyatt, C. Beeston, B. Stockhausen, Claudio Grandi, C. Burgard, J. E. Bloomer, D. M. Gingrich, J. E. Pilcher, R. G. Kellogg, M. Steiert, Gunter Wolf, Stephen Lloyd, R. J. Homer, Csaba Hajdu, P. Schenk, K. Ackerstaff, Stefano Marcellini, Stefan Schmitt, M. S. Dixit, Frans Meijers, P. G. Estabrooks, R. K. Keeler, Achim Stahl, P. E.L. Clarke, M. K. Jones, P. M. Watkins, J. P. Martin, O. C. Cooke, F. Strumia, S. D. Talbot, U. Müller, S. De Jong, A. J. Martin, P. Mättig, P. Poffenberger, Shoji Asai, J. von Krogh, H. Przysiezniak, P. Schütz, J. Bechtluft, I. J. Bloodworth, K. Ametewee, A. N. Bell, R. J. Hawkings, Gideon Alexander, Paolo Capiluppi, A. I. McNab, M. Schumacher, H. Jeremie, P. Gagnon, Yoram Rozen, E. Lefebvre, L. A. del Pozo, M. Foucher, Ehud Duchovni, J. Goldberg, F. Odorici, C. K. Hargrove, C. Sbarra, Tara Shears, A. Sittler, M. Jimack, D. Karlen, P. A. Hart, B. Nellen, A. Michelini, M. J. Pearce, H. M. Bosch, Satoshi Tanaka, T. Kobayashi, G. Yekutieli, D. Axen, A. Jawahery, A. A. Carter, Daniel Lellouch, H. G. Evans, Peter Sherwood, Ron Folman, Roger Jones, Alexander Wagner, Takehiko Mori, M. J. Goodrick, I. Cohen, J. Ludwig, K. Runge, V. Zacek, P. Bock, B. J. King, P. Utzat, Stefan Kluth, Shlomit Tarem, T. J. McMahon, R. K. Carnegie, M. Herndon, M. Bobinski, J. A. Wilson, and D. Lazic
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Missing energy, Muon, Luminosity (scattering theory), Electron–positron annihilation, High Energy Physics::Phenomenology, Fermion, Standard Model, Nuclear physics, Higgs boson, High Energy Physics::Experiment, Lepton
Abstract: This letter describes a search for the Standard Model Higgs boson using data from e + e − collisions collected at a centre-of-mass energy of 161 GeV by the OPAL detector at LEP. The ata correspond to an integrated luminosity of 10.0 pb −1 . The search is sensitive to the main final states from the process where the Higgs boson is produced in association with a fermion anti-fermion pair, namely four jets, two jets with missing energy, and two jets produced together with a pair of electrons, muons or tau leptons. Two candidate events are observed, in agreement with Standard Model background expectations. In combination with previous OPAL searches at centre-of-mass energies close to the Z 0 resonance, we derive a lower limit of 65.0 GeV for the mass of the Standard Model Higgs boson, at the 95% confidence level.
Published: 1997
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241. Searches for supersymmetric particles and anomalous four-jet production at $\sqrt{s} = 130$ and 136 GeV at LEP

Author: R. Van Kooten, T. J. McMahon, P. S. Wells, Terry Richard Wyatt, J. E. Bloomer, F. Wäckerle, D. M. Gingrich, R. K. Carnegie, M. Schumacher, E. Lefebvre, Otmar Biebel, M. Bobinski, J. A. Wilson, C. Hartmann, D. E. Plane, P. Scharff-Hansen, F. Odorici, P. G. Estabrooks, P. Berlich, R. K. Keeler, D. Lazic, Stephen Hillier, G. M. Dallavalle, S. L. Chu, M. Fierro, J. E.G. Edwards, D. Axen, A. Jawahery, P. M. Watkins, S. R. Lautenschlager, H. A. Neal, J. Letts, A. M. Smith, C. Y. Chang, T. Hilse, R. W. Springer, Peter Sherwood, Norbert Wermes, O. Runolfsson, O. C. Cooke, G. Vasseur, Sherry Towers, T. Kawamoto, D. M. Strom, P. Taras, F. X. Gentit, H. Mes, I. P. Duerdoth, P. Fath, Alexander Wagner, Silvia Arcelli, J. Ludwig, K. Runge, Michael Kobel, P. Bock, C. Beeston, Claudio Grandi, Gunter Wolf, R. Rylko, S. Orito, M. Rosvick, A. Malik, Ekg Sarkisyan, P. W. Jeffreys, J. von Krogh, Andris Skuja, Georges Azuelos, Robert McPherson, S. Petzold, G. D. Long, E. Tsur, M. Hapke, Julie Kirk, M. F. Turner-Watson, R. J. Hawkings, Mathieu Doucet, W. R. Gibson, M. Verzocchi, K. W. Bell, E. A. Mckigney, D. E. Hutchcroft, L. A. del Pozo, R. D. Heuer, M. Morii, P. Gagnon, Tetsuro Mashimo, Peter R Hobson, W. P. Lai, Fabrizio Fabbri, P. Routenburg, J. J. Ward, P. Vikas, C. Dallapiccola, J. Pálinkás, Sachio Komamiya, D. Lanske, J. C. Hill, M. J. Oreglia, Misao Sasaki, S. Yamashita, R. Howard, J. S. White, K. Sachs, Shlomo Dado, B. T. Bouwens, A. Sittler, Theodoros Geralis, E. Ros, A. T. Watson, J. M. Roney, C. Sbarra, W. Gorn, P. Igo-Kemenes, T. P. Kokott, A. Luig, P. Poffenberger, W. J. McDonald, T. Behnke, B. C. Shen, N. Altekamp, H. M. Bosch, R. M. Brown, Lorne Levinson, G. Yekutieli, Dave Charlton, Giora Mikenberg, A. A. Carter, Ron Folman, Roger Jones, K. Ishii, H. Lafoux, K. Nagai, P. Schütz, H. Jeremie, J. R. Carter, D. R. Rust, G. N. Patrick, Siegfried Bethke, A. K. Honma, B. Nijjhar, W. G. Scott, R. J. Barlow, J. Lauber, M. Gruwé, C. M. Hawkes, I. Nakamura, A. Skillman, D. J. Miller, S. Braibant, A. D. Schaile, Gabriella Pasztor, B. J. King, P. Utzat, R. E. Hughes-Jones, Daniel Lellouch, M. Starks, R. Bürgin, P. E.L. Clarke, M. K. Jones, James Pinfold, Stefan Kluth, Hans-Christian Schultz-Coulon, Shlomit Tarem, Randall Sobie, F. Strumia, Reda Tafirout, Klaus Kurt Desch, S. D. Talbot, G. A. Snow, C. P. Ward, Richard Nisius, D. Glenzinski, U. Jost, R. Mir, D. G. Fong, C. Lewis, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, S. Söldner-Rembold, Takehiko Mori, J. P. Martin, Michael Schulz, G. D. Lafferty, Gideon Bella, O. Schaile, J. Gascon, C. H. Shepherd-Themistocleous, H. J. Burckhart, Jacqueline Batley, E. do Couto e Silva, S. W. O'Neale, Marco Cuffiani, Gregor Herten, A. I. McNab, A. M. Lee, T. Omori, J. Goldberg, S. De Jong, K. J. Anderson, F. G. Oakham, B. Schmitt, M. Tecchio, E. von Törne, B. Nellen, V. Zacek, E. L. Barberio, C. R. Jones, Sven Menke, B. Wilkens, J. W. Gary, D. Rigby, R. J. Hemingway, H. G. Evans, D. S. Koetke, Marcello Mannelli, M. J. Goodrick, I. Cohen, B. W. Kennedy, P. Jovanovic, Austin Ball, Guenter Duckeck, Stefan Schmitt, Peter Krieger, Manuella Vincter, Alessandro Montanari, J. E. Pilcher, S. B. Anderson, P. Szymanski, G. W. Wilson, M. Hauschild, P. Mättig, Shoji Asai, S. A. Wotton, Stan Bentvelsen, I. J. Bloodworth, C. Markus, G. T. Jones, A. S. Turcot, E. H. Vokurka, Yoram Rozen, M. Foucher, H. Przysiezniak, D. Karlen, A. N. Bell, A. Rooke, J. G. Layter, C. Charlesworth, G. G. Hanson, G. Giacomelli, P. Schenk, R. Bartoldus, H. O. Ogren, Christoph Geich-Gimbel, M. S. Dixit, Frans Meijers, J. E. Conboy, A. Fürtjes, M. Boutemeur, F. S. Merritt, Tara Shears, P. A. Hart, M. J. Pearce, J. Bechtluft, J. A. McKenna, U. Müller, A. J. Martin, C. K. Hargrove, Matthias Schröder, M. Thiergen, John Allison, R. G. Kellogg, M. Steiert, Csaba Hajdu, Stefano Marcellini, T. J. Smith, B. Stockhausen, Paul Kyberd, F. K. Loebinger, J. Steuerer, K. Stephens, Joleen Pater, R. Giacomelli, V. Gibson, A. Joly, T. R. Junk, D. R. Ward, T. Kress, U. Ruppel, M. R. Ingram, R. Lahmann, D. C. Imrie, G. P. Siroli, Achim Stahl, Frank Fiedler, Kiyotomo Kawagoe, P. Pfeifenschneider, J. Patt, P. Weber, Paolo Giacomelli, M. Hansroul, C. Burgard, R. J. Homer, D. L. Rees, R. Kowalewski, N. I. Geddes, Michael Hildreth, F. Scharf, German Martinez, K. Ametewee, Gideon Alexander, N. L. Rodning, B. Poli, Paolo Capiluppi, N. K. Watson, S. M. Gascon-Shotkin, W. Mohr, D. Chrisman, A. Posthaus, Volker Blobel, W. Matthews, M. A. Thomson, E. K. U. Gross, A. Gaidot, M. Sproston, Matthew Evans, Stephen Lloyd, A. M. Rossi, T. Tsukamoto, H. M. Fischer, Ehud Duchovni, S. A. Robins, M. Jimack, A. Michelini, Satoshi Tanaka, and T. Kobayashi
Subjects: Physics, Quark, Particle physics, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Scalar (mathematics), High Energy Physics::Experiment, Jet (particle physics), Particle Physics - Experiment, Lepton
Abstract: A search for supersymmetric particles (charged scalar leptons, charginos decaying semileptonically, scalar top quarks) and for the associated production of two massive particles decaying into quarks has been performed using a data sample of more than 5 pb-1 at centre-of-mass energies of √s = 130 and 136 GeV collected with the OPAL detector at LEP during November 1995. No evidence for production of any of these particles has been observed in the data. Limits are presented on the production of charged scalar leptons, semileptonically decaying charginos, scalar top quarks and on the associated production of two massive particles leading to four-jet final states. © Springer-Verlag 1997.
Published: 1997
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242. Search for neutral Higgs bosons in ${\rm Z}^0$ decays using the OPAL detector at LEP

Author: Gregor Herten, B. Wilkens, Stefan Kluth, J. E. Pilcher, Shlomit Tarem, O. C. Cooke, K. Sachs, R. W. Springer, G. G. Hanson, G. W. Wilson, M. Hauschild, Shlomo Dado, S. A. Wotton, C. Markus, S. Yamashita, G. T. Jones, E. H. Vokurka, R. Bartoldus, M. Starks, S. L. Chu, Stefan Schmitt, G. Giacomelli, H. O. Ogren, R. Howard, P. Igo-Kemenes, J. S. White, Christoph Geich-Gimbel, P. Schenk, J. von Krogh, Georges Azuelos, E. Tsur, Giora Mikenberg, S. R. Lautenschlager, H. A. Neal, K. Ishii, H. Jeremie, M. S. Dixit, Frans Meijers, P. G. Estabrooks, R. K. Keeler, S. W. O'Neale, R. J. Hawkings, K. J. Anderson, F. X. Gentit, J. E. Conboy, A. Fürtjes, P. Mättig, Shoji Asai, A. Joly, M. Verzocchi, K. W. Bell, Otmar Biebel, H. Mes, T. Hilse, R. E. Hughes-Jones, S. B. Anderson, P. Szymanski, P. M. Watkins, I. P. Duerdoth, D. M. Strom, L. A. del Pozo, C. Y. Chang, O. Runolfsson, J. Pálinkás, J. C. Hill, P. E.L. Clarke, M. K. Jones, P. Fath, S. Braibant, A. D. Schaile, Gabriella Pasztor, T. Behnke, M. Boutemeur, F. S. Merritt, C. Sbarra, R. Rylko, Silvia Arcelli, A. I. McNab, P. Taras, J. Goldberg, Stan Bentvelsen, B. Nellen, J. P. Martin, Michael Kobel, C. Beeston, Misao Sasaki, W. J. McDonald, B. C. Shen, S. De Jong, John Allison, J. Letts, Paolo Giacomelli, G. Yekutieli, M. Gruwé, E. A. Mckigney, C. M. Hawkes, M. Hansroul, J. Bechtluft, Yoram Rozen, Claudio Grandi, Norbert Wermes, Sherry Towers, T. Kawamoto, O. Schaile, G. A. Snow, C. P. Ward, W. P. Lai, Siegfried Bethke, A. K. Honma, B. Nijjhar, W. G. Scott, I. Nakamura, J. A. McKenna, S. Söldner-Rembold, A. A. Carter, Ron Folman, Richard Nisius, J. M. Roney, Roger Jones, A. S. Turcot, H. G. Evans, C. Burgard, Julie Kirk, M. Foucher, H. Przysiezniak, E. do Couto e Silva, A. N. Bell, P. S. Wells, R. G. Kellogg, M. Steiert, S. Orito, R. J. Homer, B. J. King, Marco Cuffiani, P. Utzat, Terry Richard Wyatt, M. Rosvick, M. F. Turner-Watson, J. E. Bloomer, Csaba Hajdu, Stefano Marcellini, D. Karlen, M. J. Goodrick, I. Cohen, M. Hapke, T. J. McMahon, M. Kolrep, J. Lauber, Achim Stahl, A. Rooke, M. Morii, J. G. Layter, Peter R Hobson, Sven Menke, D. E. Hutchcroft, M. Schumacher, E. Lefebvre, P. Poffenberger, D. Glenzinski, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, R. K. Carnegie, Hans-Christian Schultz-Coulon, Randall Sobie, Michael Schulz, G. D. Lafferty, M. Fierro, C. Charlesworth, J. E.G. Edwards, A. Malik, Ekg Sarkisyan, M. J. Oreglia, B. Stockhausen, Paul Kyberd, F. K. Loebinger, P. Routenburg, J. Steuerer, Daniel Lellouch, Sachio Komamiya, Theodoros Geralis, M. Bobinski, J. A. Wilson, P. W. Jeffreys, Takehiko Mori, P. Schütz, F. Strumia, S. D. Talbot, F. Odorici, Joleen Pater, E. Ros, A. T. Watson, Guenter Duckeck, J. R. Carter, G. N. Patrick, R. Giacomelli, D. Lazic, P. Pfeifenschneider, P. Scharff-Hansen, V. Zacek, J. Patt, J. J. Ward, P. Vikas, T. P. Kokott, D. Lanske, C. Dallapiccola, P. Gagnon, A. M. Smith, G. Vasseur, N. Altekamp, A. Sittler, R. J. Barlow, D. J. Miller, H. M. Bosch, James Pinfold, D. G. Fong, C. Lewis, J. Gascon, D. Rigby, R. J. Hemingway, S. M. Gascon-Shotkin, D. Axen, A. Jawahery, J. W. Gary, D. S. Koetke, B. W. Kennedy, Peter Sherwood, P. Jovanovic, Marcello Mannelli, Alexander Wagner, Matthew Evans, Andris Skuja, A. M. Rossi, J. Ludwig, S. Petzold, K. Runge, G. D. Long, P. Bock, Austin Ball, T. Tsukamoto, Peter Krieger, H. M. Fischer, Tetsuro Mashimo, Alessandro Montanari, G. Wolf, S. A. Robins, U. Jost, R. Mir, Dave Charlton, W. Gorn, R. Bürgin, H. Lafoux, Gideon Bella, C. H. Shepherd-Themistocleous, H. J. Burckhart, N. I. Geddes, Michael Hildreth, Jacqueline Batley, N. L. Rodning, T. Omori, B. Poli, F. G. Oakham, B. Schmitt, E. L. Barberio, I. J. Bloodworm, C. R. Jones, R. Lahmann, D. C. Imrie, R. Kowalewski, G. P. Siroli, K. Ametewee, Kiyotomo Kawagoe, Gideon Alexander, Paolo Capiluppi, P. Weber, Ehud Duchovni, M. Jimack, A. Michelini, Satoshi Tanaka, T. Kobayashi, D. Chrisman, Volker Blobel, Stephen Lloyd, T. J. Smith, K. Stephens, V. Gibson, T. R. Junk, D. R. Ward, T. Kress, Matthias Schröder, M. Vincier, U. Ruppel, M. R. Ingram, M. Thiergen, Frank Fiedler, U. Müller, A. J. Martin, C. K. Hargrove, Tara Shears, P. A. Hart, M. J. Pearce, Robert McPherson, Mathieu Doucet, R. D. Heuer, Fabrizio Fabbri, K. Nagai, D. R. Rust, A. M. Lee, M. Tecchio, E. von Törne, R. Van Kooten, F. Wäckerle, D. M. Gingrich, P. Berlich, Reda Tafirout, Klaus Kurt Desch, C. Hartmann, D. E. Plane, Stephen Hillier, G. M. Dallavalle, W. R. Gibson, B. T. Bouwens, R. M. Brown, Lorne Levinson, A. Skillman, N. K. Watson, W. Mohr, A. Posthaus, D. L. Rees, F. Scharf, German Martinez, W. Matthews, M. A. Thomson, E. K. U. Gross, A. Gaidot, and M. Sproston
Subjects: Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Detector, Higgs boson, Supersymmetry, Particle Physics - Experiment, Lower limit, Boson
Published: 1997
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243. [Untitled]

Author: S. Yamashita, Tsutomu Oishi, and Hiromori Tsutsumi
Subjects: Materials science, General Chemical Engineering, Inorganic chemistry, Composite number, Electrolyte, Electrochemistry, Lithium battery, chemistry.chemical_compound, chemistry, Chemical engineering, Electrode, Propylene carbonate, Polyaniline, Materials Chemistry, Faraday efficiency
Abstract: Polyaniline (PANI)-poly (p-styrenesulfonic acid) (PSS) composite was prepared by thermal post-polymerization of PANI-p-styrenesulfonic acid (SSA) composite. A PANI–SSA composite was prepared by mixing PANI/N-methyl-2-pyrrolidinone solution with SSA aqueous solution. The PANI–SSA composite film was prepared by casting the composite onto an ITO glass plate. The cast film was converted to PANI-PSS film by heating at 100°C for 3h (post-polymerization process). The PANI–PSS modified ITO electrode showed electrochemical responses based on the redox reaction of PANI–PSS composite in the organic electrolyte solution, for example, propylene carbonate containing 1moldm−3 LiClO4. The PANI–PSS composite was a cation -doping polymer composite. The composite was also modified on a porous carbon material (Reticulated Vitreous CarbonTM, RVC, Energy Research and Generation, Inc.). The PANI–PSS modified RVC electrode showed similar electrochemical behaviour as the PANI–PSS modified ITO electrode. Model secondary lithium cells, Li|1moldm−3 LiClO4-propylene carbonate|PANI–PSS modified RVC electrode, were constructed and charge–discharge cycling tests were carried out. The cell showed about 60% coulombic efficiency under high current density cycling conditions (3.8Ag−1, per gram of PANI–PSS modified RVC electrode).
Published: 1997
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244. Photonic events with large missing energy in e+e− collisions at

Author: T. P. Kokott, A. Joly, Silvia Arcelli, C. Dallapiccola, C. Sbarra, P. Poffenberger, U. Ruppel, M. R. Ingram, N. Altekamp, E. A. Mckigney, R. J. Barlow, K. Nagai, W. P. Lai, Paolo Giacomelli, M. Hansroul, D. J. Miller, G. Yekutieli, J. Grunhaus, C. Burgard, P. Schütz, U. Jost, R. Mir, Gideon Bella, K. Sachs, J. M. Roney, S. R. Lautenschlager, R. J. Homer, Shlomo Dado, John Allison, R. G. Kellogg, M. Steiert, Csaba Hajdu, Stefano Marcellini, A. A. Carter, H. J. Burckhart, H. A. Neal, Ron Folman, Roger Jones, Jacqueline Batley, Tara Shears, T. Hilse, P. Schenk, M. Hapke, B. Stockhausen, Paul Kyberd, F. K. Loebinger, D. L. Rees, J. Steuerer, F. G. Oakham, B. Schmitt, Joleen Pater, Achim Stahl, O. Runolfsson, R. Giacomelli, G. Azuelos, F. Scharf, T. Omori, D. R. Rust, B. J. King, P. Utzat, P. A. Hart, E. L. Barberio, P. G. Estabrooks, Giora Mikenberg, R. K. Keeler, D. E. Hutchcroft, P. S. Wells, A. Rooke, German Martinez, H. M. Fischer, C. Beeston, Claudio Grandi, W. R. Gibson, J. G. Layter, S. Yamashita, T. J. McMahon, P. Igo-Kemenes, P. M. Watkins, M. J. Oreglia, A. M. Lee, A. S. Turcot, F. Fiedler, M. J. Pearce, G. W. Wilson, C. R. Jones, R. K. Carnegie, K. Ishii, H. Jeremie, W. Matthews, Claire Shepherd-Themistocleous, H. Mes, I. P. Duerdoth, M. Boutemeur, F. S. Merritt, S. W. O'Neale, K. J. Anderson, M. F. Turner-Watson, J. R. Carter, G. N. Patrick, E. von Törne, D. Rigby, R. J. Hemingway, B. W. Kennedy, P. Jovanovic, P. Pfeifenschneider, P. Fath, S. Braibant, A. D. Schaile, Gabriella Pasztor, M. Morii, M. Herndon, M. Bobinski, J. A. Wilson, M. Hauschild, S. A. Wotton, C. Markus, R. E. Hughes-Jones, Peter R Hobson, P. Routenburg, O. Schaile, T. J. Smith, K. Stephens, Terry Richard Wyatt, J. E. Bloomer, Austin Ball, Peter Krieger, Manuella Vincter, Alessandro Montanari, J. Patt, Dave Charlton, Otmar Biebel, J. Bechtluft, M. A. Thomson, S. A. Robins, R. Lahmann, A. Buguzzi, J. A. McKenna, D. C. Imrie, U. Müller, A. J. Martin, G. A. Snow, C. P. Ward, G. T. Jones, E. H. Vokurka, B. T. Bouwens, R. M. Brown, Lorne Levinson, E. do Couto e Silva, D. Lazic, P. E.L. Clarke, M. K. Jones, R. Bürgin, E. K. U. Gross, M. Sproston, S. Söldner-Rembold, M. Fierro, J. E.G. Edwards, D. Chrisman, Sven Menke, J. P. Martin, T. Behnke, V. Gibson, O. C. Cooke, Ekg Sarkisyan, P. W. Jeffreys, N. J. Oldershaw, R. Bartoldus, M. Kolrep, T. R. Junk, S. De Jong, I. Trigger, H. O. Ogren, A. Skillman, Volker Blobel, J. Letts, Christoph Geich-Gimbel, Norbert Wermes, Sherry Towers, M. Gruwé, C. M. Hawkes, D. R. Ward, T. Kress, J. von Krogh, M. Schumacher, T. Kawamoto, C. Hartmann, G. P. Siroli, Hans-Christian Schultz-Coulon, Robert McPherson, D. E. Plane, C. K. Hargrove, Randall Sobie, Michael Schulz, G. D. Lafferty, E. Lefebvre, H. Przysiezniak, N. K. Watson, R. J. Hawkings, S. Orito, M. Rosvick, Mathieu Doucet, Stephen Hillier, Matthias Schröder, L. A. del Pozo, R. D. Heuer, Richard Nisius, Fabrizio Fabbri, G. M. Dallavalle, Stephen Lloyd, F. Odorici, A. N. Bell, J. J. Ward, P. Vikas, M. Thiergen, Marco Cuffiani, J. E. Conboy, A. Fürtjes, N. I. Geddes, Michael Hildreth, D. Lanske, Guenter Duckeck, R. Van Kooten, W. Mohr, D. M. Gingrich, Ehud Duchovni, D. M. Strom, N. L. Rodning, A. Posthaus, S. B. Anderson, Kiyotomo Kawagoe, P. Szymanski, B. Poli, M. Jimack, Stan Bentvelsen, F. Wäckerle, S. Robertson, Gregor Herten, R. Rylko, G. G. Hanson, A. Michelini, B. Wilkens, Reda Tafirout, Klaus Kurt Desch, J. E. Pilcher, Satoshi Tanaka, T. Kobayashi, S. M. Gascon-Shotkin, G. Giacomelli, P. Berlich, Matthew Evans, R. Howard, J. S. White, A. M. Rossi, T. Tsukamoto, M. S. Dixit, Frans Meijers, Andris Skuja, S. Petzold, K. Ametewee, Gideon Alexander, G. D. Long, Paolo Capiluppi, Tetsuro Mashimo, W. Gorn, P. Scharff-Hansen, A. M. Smith, James Pinfold, D. G. Fong, C. Lewis, J. Gascon, J. W. Gary, D. S. Koetke, Marcello Mannelli, R. W. Springer, C. Y. Chang, P. Taras, Michael Kobel, Julie Kirk, E. Tsur, M. Verzocchi, K. W. Bell, J. Pálinkás, J. C. Hill, Misao Sasaki, W. J. McDonald, B. C. Shen, Siegfried Bethke, A. K. Honma, B. Nijjhar, W. G. Scott, I. Nakamura, D. Axen, A. Jawahery, Peter Sherwood, Alexander Wagner, J. Ludwig, K. Runge, P. Bock, J. Lauber, F. Strumia, S. D. Talbot, P. Gagnon, A. Sittler, D. Glenzinski, H. M. Bosch, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, Gunter Wolf, K. Ackerstaff, Stefan Kluth, Shlomit Tarem, A. I. McNab, J. Goldberg, B. Nellen, I. J. Bloodworth, H. G. Evans, M. J. Goodrick, I. Cohen, Yoram Rozen, M. Foucher, D. Karlen, Stefan Schmitt, P. Mättig, Shoji Asai, Daniel Lellouch, Takehiko Mori, V. Zacek, Sachio Komamiya, Theodoros Geralis, E. Ros, and A. T. Watson
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Photon, Luminosity (scattering theory), Missing energy, Branching fraction, Electron–positron annihilation, High Energy Physics::Experiment, Topology (electrical circuits), Supersymmetry, Standard Model
Abstract: Photonic events with large missing energy have been observed with the OPAL detector at LEP using two search topologies. The first topology looks for events with significant missing energy and at least one photon in |cosθ| 0.2. The second topology looks for events with an acoplanar photon pair where both photons are in |cosθ| < 0.7 and have energy exceeding 1.75 GeV. In the data sample corresponding to an integrated luminosity of 10.0 pb−1, 11 events are selected for the first topology and a cross-section of 1.6 ± 0.5 pb is measured within the kinematic acceptance, consistent with that expected for the Standard Model process e+e− → ννγ(γ). No events are selected for the second topology giving a 95% CL cross-section upper limit of 0.41 pb within the kinematic acceptance. Upper limits on the cross-section times branching ratio for new particle production are also derived.
Published: 1997
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245. [Untitled]

Author: Jie Huang, Lynette Scotese-Wojtila, Max Wiznitzer, Kathleen Maxwell, Toyoko S. Yamashita, and Robert L. Findling
Subjects: Pediatrics, medicine.medical_specialty, Psychosis, Placebo-controlled study, Pyridoxine, Placebo, medicine.disease, law.invention, Clinical trial, Randomized controlled trial, law, Developmental and Educational Psychology, medicine, Clinical Global Impression, Autism, Psychology, Psychiatry, medicine.drug
Abstract: Several reports have described salutary effects such as decreased physical aggression and improved social responsiveness being associated with the administration of high doses of pyridoxine and magnesium (HDPM) in open-labeled and controlled studies of patients with autism. Despite this fact, this intervention remains controversial. A 10-week double-blind, placebo-controlled trial was undertaken to examine both the efficacy and safety of HDPM in autism. Twelve patients were enrolled, and 10 patients (mean age 6 years 3 months) were able to complete the study. HDPM at an average dose of 638.9 mg of pyridoxine and 216.3 mg of magnesium oxide was ineffective in ameliorating autistic behaviors as assessed by the Children's Psychiatric Rating Scale (CPRS), the Clinical Global Impression Scale, and the NIMH Global Obsessive Compulsive Scale. Furthermore, no clinically significant side effects were noted during HDPM administration. A trend for a transient change on the CPRS was found that was possibly due to a placebo response. This study raises doubts about the clinical effectiveness of HDPM in autistic disorder.
Published: 1997
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246. Measurement of the cross-section for the process gamma gamma -> p(p)over-bar root s(ee)=183-189 GeV at LEP

Author: G. Abbiendi, C. Ainsley, P. F. Akesson, G. Alexander, J. Allison, P. Amaral, G. Anagnostou, K. J. Anderson, S. Arcelli, S. Asai, D. Axen, G. Azuelos, I. Bailey, E. Barberio, T. Barillari, R. J. Barlow, R. J. Batley, P. Bechtle, T. Behnke, K. W. Bell, P. J. Bell, G. Bella, A. Bellerive, G. Benelli, S. Bethke, O. Biebel, I. J. Bloodworth, O. Boeriu, P. Bock, D. Bonacorsi, M. Boutemeur, S. Braibant, L. Brigliadori, R. M. Brown, K. Buesser, H. J. Burckhart, S. Campana, R. K. Carnegie, B. Caron, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, A. Csilling, M. Cuffiani, S. Dado, G. M. Dallavalle, S. Dallison, A. D. Roeck, E. A. De, K. Desch, B. Dienes, M. Donkers, J. Dubbert, E. Duchovni, G. Duckeck, I. P. Duerdoth, E. Elfgren, E. Etzion, F. Fabbri, L. Feld, P. Ferrari, F. Fiedler, I. Fleck, M. Ford, A. Frey, A. Furtjes, P. Gagnon, J. W. Gary, G. Gaycken, C. Geich Gimbel, G. Giacomelli, P. Giacomelli, M. Giunta, J. Goldberg, E. Gross, J. Grunhaus, M. Gruwe, P. O. Gunther, A. Gupta, C. Hajdu, M. Hamann, G. G. Hanson, K. Harder, A. Harel, M. Harin Dirac, M. Hauschild, J. Hauschildt, C. M. Hawkes, R. Hawkings, R. J. Hemingway, C. Hensel, G. Herten, R. D. Heuer, J. C. Hill, K. Hoffman, R. J. Homer, D. Horvath, R. Howard, P. Huntemeyer, P. Igo Kemenes, K. Ishii, H. Jeremie, P. Jovanovic, T. R. Junk, N. Kanaya, J. Kanzaki, G. Karapetian, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. J. Kennedy, D. H. Kim, K. Klein, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, S. Komamiya, L. Kormos, R. V. Kowalewski, T. Kramer, T. Kress, P. Krieger, J. v. Krogh, D. Krop, K. Kruger, M. Kupper, G. D. Lafferty, H. Landsman, D. Lanske, J. G. Layter, A. Leins, D. Lellouch, J. Letts, L. Levinson, J. Lillich, S. L. Lloyd, F. K. Loebinger, J. Lu, J. Ludwig, A. Macpherson, W. Mader, S. Marcellini, T. E. Marchant, A. J. Martin, J. P. Martin, G. Masetti, T. Mashimo, P. Mattig, W. J. McDonald, J. McKenna, T. J. McMahon, R. A. McPherson, F. Meijers, P. Mendez Lorenzo, W. Menges, F. S. Merritt, H. Mes, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, S. Moed, W. Mohr, T. Mori, A. Mutter, K. Nagai, L. Nakamura, H. A. Neal, R. Nisius, S. W. O'Neale, A. Oh, A. Okpara, M. J. Oreglia, S. Orito, C. Pahl, G. Pasztor, J. R. Pater, G. N. Patrick, J. E. Pilcher, J. Pinfold, D. E. Plane, B. Poli, J. Polok, O. Pooth, M. Przybycien, A. Quadt, K. Rabbertz, C. Rembser, P. Renkel, H. Rick, J. M. Roney, S. Rosati, Y. Rozen, K. Runge, K. Sachs, T. Saeki, O. Sahr, E. K. G., A. D. Schaile, O. Schaile, P. Scharff Hansen, J. Schieck, T. Schoerner Sadenius, M. Schroder, M. Schumacher, C. Schwick, W. G. Scott, R. Seuster, T. G. Shears, B. C. Shen, C. H. Shepherd Themistocleous, P. Sherwood, G. Siroli, A. Skuja, A. M. Smith, R. Sobie, S. Soldner Rembold, F. Spano, A. Stahl, K. Stephens, D. Strom, R. Strohmer, S. Tarem, M. Tasevsky, R. J. Taylor, R. Teuscher, M. A. Thomson, E. Torrence, D. Toya, P. Tran, T. Trefzger, A. Tricoli, I. Trigger, Z. Trocsanyi, E. Tsur, M. F. Turner Watson, I. Ueda, B. Ujvari, B. Vachon, C. F. Vollmer, P. Vannerem, M. Verzocchi, H. Voss, J. Vossebeld, D. Waller, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wells, T. Wengler, N. Wermes, D. Wetterling, G. W. Wilson, J. A. Wilson, G. Wolf, T. R. Wyatt, S. Yamashita, D. Zer Zion, L. Zivkovic, SPAGNOLO, Stefania Antonia, G., Abbiendi, C., Ainsley, P. F., Akesson, G., Alexander, J., Allison, P., Amaral, G., Anagnostou, K. J., Anderson, S., Arcelli, S., Asai, D., Axen, G., Azuelo, I., Bailey, E., Barberio, T., Barillari, R. J., Barlow, R. J., Batley, P., Bechtle, T., Behnke, K. W., Bell, P. J., Bell, G., Bella, A., Bellerive, G., Benelli, S., Bethke, O., Biebel, I. J., Bloodworth, O., Boeriu, P., Bock, D., Bonacorsi, M., Boutemeur, S., Braibant, L., Brigliadori, R. M., Brown, K., Buesser, H. J., Burckhart, S., Campana, R. K., Carnegie, B., Caron, A. A., Carter, J. R., Carter, C. Y., Chang, D. G., Charlton, A., Csilling, M., Cuffiani, S., Dado, G. M., Dallavalle, S., Dallison, A. D., Roeck, E. A., De, K., Desch, B., Diene, M., Donker, J., Dubbert, E., Duchovni, G., Duckeck, I. P., Duerdoth, E., Elfgren, E., Etzion, F., Fabbri, L., Feld, P., Ferrari, F., Fiedler, I., Fleck, M., Ford, A., Frey, A., Furtje, P., Gagnon, J. W., Gary, G., Gaycken, C., Geich Gimbel, G., Giacomelli, P., Giacomelli, M., Giunta, J., Goldberg, E., Gro, J., Grunhau, M., Gruwe, P. O., Gunther, A., Gupta, C., Hajdu, M., Hamann, G. G., Hanson, K., Harder, A., Harel, M., Harin Dirac, M., Hauschild, J., Hauschildt, C. M., Hawke, R., Hawking, R. J., Hemingway, C., Hensel, G., Herten, R. D., Heuer, J. C., Hill, K., Hoffman, R. J., Homer, D., Horvath, R., Howard, P., Huntemeyer, P., Igo Kemene, K., Ishii, H., Jeremie, P., Jovanovic, T. R., Junk, N., Kanaya, J., Kanzaki, G., Karapetian, D., Karlen, V., Kartvelishvili, K., Kawagoe, T., Kawamoto, R. K., Keeler, R. G., Kellogg, B. J., Kennedy, D. H., Kim, K., Klein, A., Klier, S., Kluth, T., Kobayashi, M., Kobel, S., Komamiya, L., Kormo, R. V., Kowalewski, T., Kramer, T., Kre, P., Krieger, J. v., Krogh, D., Krop, K., Kruger, M., Kupper, G. D., Lafferty, H., Landsman, D., Lanske, J. G., Layter, A., Lein, D., Lellouch, J., Lett, L., Levinson, J., Lillich, S. L., Lloyd, F. K., Loebinger, J., Lu, J., Ludwig, A., Macpherson, W., Mader, S., Marcellini, T. E., Marchant, A. J., Martin, J. P., Martin, G., Masetti, T., Mashimo, P., Mattig, W. J., Mcdonald, J., Mckenna, T. J., Mcmahon, R. A., Mcpherson, F., Meijer, P., Mendez Lorenzo, W., Menge, F. S., Merritt, H., Me, A., Michelini, S., Mihara, G., Mikenberg, D. J., Miller, S., Moed, W., Mohr, T., Mori, A., Mutter, K., Nagai, L., Nakamura, H. A., Neal, R., Nisiu, S. W., O'Neale, A., Oh, A., Okpara, M. J., Oreglia, S., Orito, C., Pahl, G., Pasztor, J. R., Pater, G. N., Patrick, J. E., Pilcher, J., Pinfold, D. E., Plane, B., Poli, J., Polok, O., Pooth, M., Przybycien, A., Quadt, K., Rabbertz, C., Rembser, P., Renkel, H., Rick, J. M., Roney, S., Rosati, Y., Rozen, K., Runge, K., Sach, T., Saeki, O., Sahr, E. K., G., A. D., Schaile, O., Schaile, P., Scharff Hansen, J., Schieck, T., Schoerner Sadeniu, M., Schroder, M., Schumacher, C., Schwick, W. G., Scott, R., Seuster, T. G., Shear, B. C., Shen, C. H., Shepherd Themistocleou, P., Sherwood, G., Siroli, A., Skuja, A. M., Smith, R., Sobie, S., Soldner Rembold, Spagnolo, Stefania Antonia, F., Spano, A., Stahl, K., Stephen, D., Strom, R., Strohmer, S., Tarem, M., Tasevsky, R. J., Taylor, R., Teuscher, M. A., Thomson, E., Torrence, D., Toya, P., Tran, T., Trefzger, A., Tricoli, I., Trigger, Z., Trocsanyi, E., Tsur, M. F., Turner Watson, I., Ueda, B., Ujvari, B., Vachon, C. F., Vollmer, P., Vannerem, M., Verzocchi, H., Vo, J., Vossebeld, D., Waller, C. P., Ward, D. R., Ward, P. M., Watkin, A. T., Watson, N. K., Watson, P. S., Well, T., Wengler, N., Werme, D., Wetterling, G. W., Wilson, J. A., Wilson, G., Wolf, T. R., Wyatt, S., Yamashita, D., Zer Zion, and L., Zivkovic
Abstract: The exclusive production of proton-antiproton pairs in the collisions of two quasi-real photons has been studied using data taken at rootS(ee) = 183 GeV and 189 GeV with the OPAL detector at LEP. Results are presented for p (p) over bar invariant masses, W, in the range 2.15 < W < 3.95 GeV. The cross-section measurements are compared with previous data and with recent analytic calculations based on the quark-diquark model.
Published: 2003

247. Multi-photon production in e(+)e(-) collisions at root s=181-209 GeV

Author: G. Abbiendi, C. Ainsley, P. F. Akesson, G. Alexander, J. Allison, P. Amaral, G. Anagnostou, K. J. Anderson, S. Arcelli, S. Asai, D. Axen, G. Azuelos, I. Bailey, E. Barberio, R. J. Barlow, R. J. Batley, P. Bechtle, T. Behnke, K. W. Bell, P. J. Bell, G. Bella, A. Bellerive, C. Benelli, S. Bethke, O. Biebel, I. J. Bloodworth, O. Boeriu, P. Bock, D. Bonacorsi, M. Boutemeur, S. Braibant, L. Brigliadori, R. M. Brown, K. Buesser, H. J. Burckhart, S. Campana, R. K. Carnegie, B. Caron, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, A. Csilling, M. Cuffiani, S. Dado, G. M. Dallavalle, S. Dallison, A. De Roeck, E. A. De, K. Desch, B. Dienes, M. Donkers, J. Dubbert, E. Duchovni, G. Duckeck, I. P. Duerdoth, E. Elfgren, E. Etzion, F. Fabbri, L. Feld, P. Ferrari, F. Fiedler, I. Fleck, M. Ford, A. Frey, A. Furtjes, P. Gagnon, J. W. Gary, G. Gaycken, C. Geich Gimbel, G. Giacomelli, P. Giacomelli, M. Giunta, J. Goldberg, E. Gross, J. Grunhaus, M. Gruwe, P. O. Gunther, A. Gupta, C. Hajdu, M. Hamann, G. G. Hanson, K. Harder, A. Harel, M. Harin Dirac, M. Hauschild, J. Hauschildt, C. M. Hawkes, R. Hawkings, R. J. Hemingway, C. Hensel, G. Herten, R. D. Heuer, J. C. Hill, K. Hoffman, R. J. Homer, D. Horvath, R. Howard, P. Huntemeyer, P. Igo Kemenes, K. Ishii, H. Jeremie, P. Jovanovic, T. R. Junk, N. Kanaya, J. Kanzaki, G. Karapetian, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kenndy, D. H. Kim, K. Klein, A. Klier, S. Kluth, T. Kobayashi, M. Kobel, S. Komamiya, L. Kormos, R. V. Kowalewski, T. Kramer, T. Kress, P. Krieger, J. von Krogh, D. Krop, K. Kruger, M. Kupper, G. D. Lafferty, H. Landsman, D. Lanske, J. G. Layter, A. Leins, D. Lellouch, J. Letts, L. Levinson, J. Lillich, S. L. Lloyd, F. K. Loebinger, J. Lu, J. Ludwig, A. Macpherson, W. Mader, S. Marcellini, T. E. Marchant, A. J. Martin, J. P. Martin, G. Masetti, T. Mashim, P. Madttig, W. J. McDonald, J. McKenna, T. J. McMahon, R. A. McPherson, F. Meijers, P. Mendez Lorenzo, W. Menges, F. S. Merritt, H. Mes, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, S. Moed, W. Mohr, T. Mori, A. Mutter, K. Nagai, I. Nakamura, H. A. Neal, R. Nisius, S. W. O'Neale, A. Ohs, A. Okpara, M. J. Oreglia, S. Orito, C. Pahl, G. Pasztor, J. R. Pater, G. N. Patrick, J. E. Pilcher, J. Pinfold, D. E. Plane, B. Poli, J. Polok, O. Pooth, M. Przybycien, A. Quadt, K. Rabbertz, C. Rembser, P. Renke, H. Rick, J. M. Roney, S. Rosati, Y. Rozen, K. Runge, K. Sachs, T. Saeki, O. Sahr, E. K. G., A. D. Schaile, O. Schaile, P. Scharff Hansen, J. Schieck, T. Schorner Sadenius, M. Schroder, M. Schumacher, C. Schwick, W. G. Scott, R. Seuster, T. G. Shears, B. C. Shen, C. H. Shepherd Themistocleous, P. Sherwood, G. Siroli, A. Skuja, A. M. Smith, R. Sobie, S. Soldner Rembold, F. Spano, A. Stahl, K. Stephens, D. Strom, R. Strohmer, S. Tarem, M. Tasevsky, R. J. Taylor, R. Teuscher, M. A. Thomson, E. Torrence, D. Toya, P. Tran, T. Trefzger, A. Tricoli, I. Triggers, Z. Trocsanyi, E. Tsur, M. F. Turner Watson, I. Ueda, B. Ujvari, B. Vachon, C. F. Vollmer, P. Vannerem, M. Verzocchi, H. Voss, J. Vossebeld, D. Waller, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wellss, T. Wengler, N. Wermes, D. Wetterling, G. W. Wilson, J. A. Wilson, G. Wolf, T. R. Wyatt, S. Yamashita, D. Zer Zion, L. Zivkovic, SPAGNOLO, Stefania Antonia, G., Abbiendi, C., Ainsley, P. F., Akesson, G., Alexander, J., Allison, P., Amaral, G., Anagnostou, K. J., Anderson, S., Arcelli, S., Asai, D., Axen, G., Azuelo, I., Bailey, E., Barberio, R. J., Barlow, R. J., Batley, P., Bechtle, T., Behnke, K. W., Bell, P. J., Bell, G., Bella, A., Bellerive, C., Benelli, S., Bethke, O., Biebel, I. J., Bloodworth, O., Boeriu, P., Bock, D., Bonacorsi, M., Boutemeur, S., Braibant, L., Brigliadori, R. M., Brown, K., Buesser, H. J., Burckhart, S., Campana, R. K., Carnegie, B., Caron, A. A., Carter, J. R., Carter, C. Y., Chang, D. G., Charlton, A., Csilling, M., Cuffiani, S., Dado, G. M., Dallavalle, S., Dallison, A., De Roeck, E. A., De, K., Desch, B., Diene, M., Donker, J., Dubbert, E., Duchovni, G., Duckeck, I. P., Duerdoth, E., Elfgren, E., Etzion, F., Fabbri, L., Feld, P., Ferrari, F., Fiedler, I., Fleck, M., Ford, A., Frey, A., Furtje, P., Gagnon, J. W., Gary, G., Gaycken, C., Geich Gimbel, G., Giacomelli, P., Giacomelli, M., Giunta, J., Goldberg, E., Gro, J., Grunhau, M., Gruwe, P. O., Gunther, A., Gupta, C., Hajdu, M., Hamann, G. G., Hanson, K., Harder, A., Harel, M., Harin Dirac, M., Hauschild, J., Hauschildt, C. M., Hawke, R., Hawking, R. J., Hemingway, C., Hensel, G., Herten, R. D., Heuer, J. C., Hill, K., Hoffman, R. J., Homer, D., Horvath, R., Howard, P., Huntemeyer, P., Igo Kemene, K., Ishii, H., Jeremie, P., Jovanovic, T. R., Junk, N., Kanaya, J., Kanzaki, G., Karapetian, D., Karlen, V., Kartvelishvili, K., Kawagoe, T., Kawamoto, R. K., Keeler, R. G., Kellogg, B. W., Kenndy, D. H., Kim, K., Klein, A., Klier, S., Kluth, T., Kobayashi, M., Kobel, S., Komamiya, L., Kormo, R. V., Kowalewski, T., Kramer, T., Kre, P., Krieger, J., von Krogh, D., Krop, K., Kruger, M., Kupper, G. D., Lafferty, H., Landsman, D., Lanske, J. G., Layter, A., Lein, D., Lellouch, J., Lett, L., Levinson, J., Lillich, S. L., Lloyd, F. K., Loebinger, J., Lu, J., Ludwig, A., Macpherson, W., Mader, S., Marcellini, T. E., Marchant, A. J., Martin, J. P., Martin, G., Masetti, T., Mashim, P., Madttig, W. J., Mcdonald, J., Mckenna, T. J., Mcmahon, R. A., Mcpherson, F., Meijer, P., Mendez Lorenzo, W., Menge, F. S., Merritt, H., Me, A., Michelini, S., Mihara, G., Mikenberg, D. J., Miller, S., Moed, W., Mohr, T., Mori, A., Mutter, K., Nagai, I., Nakamura, H. A., Neal, R., Nisiu, S. W., O'Neale, A., Oh, A., Okpara, M. J., Oreglia, S., Orito, C., Pahl, G., Pasztor, J. R., Pater, G. N., Patrick, J. E., Pilcher, J., Pinfold, D. E., Plane, B., Poli, J., Polok, O., Pooth, M., Przybycien, A., Quadt, K., Rabbertz, C., Rembser, P., Renke, H., Rick, J. M., Roney, S., Rosati, Y., Rozen, K., Runge, K., Sach, T., Saeki, O., Sahr, E. K., G., A. D., Schaile, O., Schaile, P., Scharff Hansen, J., Schieck, T., Schorner Sadeniu, M., Schroder, M., Schumacher, C., Schwick, W. G., Scott, R., Seuster, T. G., Shear, B. C., Shen, C. H., Shepherd Themistocleou, P., Sherwood, G., Siroli, A., Skuja, A. M., Smith, R., Sobie, S., Soldner Rembold, Spagnolo, Stefania Antonia, F., Spano, A., Stahl, K., Stephen, D., Strom, R., Strohmer, S., Tarem, M., Tasevsky, R. J., Taylor, R., Teuscher, M. A., Thomson, E., Torrence, D., Toya, P., Tran, T., Trefzger, A., Tricoli, I., Trigger, Z., Trocsanyi, E., Tsur, M. F., Turner Watson, I., Ueda, B., Ujvari, B., Vachon, C. F., Vollmer, P., Vannerem, M., Verzocchi, H., Vo, J., Vossebeld, D., Waller, C. P., Ward, D. R., Ward, P. M., Watkin, A. T., Watson, N. K., Watson, P. S., Well, T., Wengler, N., Werme, D., Wetterling, G. W., Wilson, J. A., Wilson, G., Wolf, T. R., Wyatt, S., Yamashita, D., Zer Zion, and L., Zivkovic
Published: 2003

248. SOIL CHEMICAL PROPERTIES AND HYDROLOGIC PROCESSES ALONG THE BORDER OF JAPANESE CYPRESS (HINOKI) AND MIXED BROADLEAF FORESTS

Author: S. Yamashita and R. C. Sidle
Subjects: biology, chemistry.chemical_element, Reforestation, Forestry, biology.organism_classification, Nitrogen, Infiltration (hydrology), Geography, chemistry, Soil water, Chamaecyparis, Cypress, Surface runoff, Temperate rainforest
Abstract: Unique hydrologic processes have been observed in hinoki (Chamaecyparis obtuse) forests. Soils in hinoki forests often have thin, poorly decomposed litter layers, resulting in lower infiltration capacities than other temperate forests, thus enabling the occurrence of “true overland flow” during relatively high, but not unusual rainfall intensities. The very thin organic layers in hinoki forests occur due to poor decomposition characteristics of hinoki bark, in spite of the humid climate. The most recent forest research in Japan suggests mixing hinoki trees with other natural tree species during reforestation. In Aichi Prefecture, we measured soil chemical properties, such as nitrogen, phosphorus, pH, and electrical conductivity near the border between a hinoki forest and a mixed broadleaf forest. An area of high total soluble nitrogen was found a few meters inside the natural forest near the border with the hinoki forest; however, the other soil chemical properties did not show such unique distributions. This phenomenon may be related to the interaction of soil water flow and nitrogen uptake by hinoki tree roots. This paper discusses these processes based on field observations, soil water flow and chemical distribution along the border between these forest types.
Published: 2013
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249. Persistence of Staphylococcus aureus colonization among individuals with immune-mediated inflammatory diseases treated with TNF-α inhibitor therapy

Author: S. Yamashita, Atul Deodhar, Cara D. Varley, Andrew Blauvelt, Robert Vega, Benjamin D. Ehst, Antony C. Bakke, and Kevin L. Winthrop
Subjects: Male, Immunoconjugates, medicine.disease_cause, Receptors, Tumor Necrosis Factor, Persistence (computer science), Etanercept, Antibodies, Monoclonal, Murine-Derived, Risk Factors, Prevalence, Pharmacology (medical), Colonization, Prospective Studies, Aged, 80 and over, Antibodies, Monoclonal, Middle Aged, Staphylococcal Infections, Staphylococcus aureus, Rheumatoid arthritis, Female, Rheumatic Fever, Rituximab, Immunosuppressive Agents, Adult, Methicillin-Resistant Staphylococcus aureus, medicine.medical_specialty, Adolescent, Antibodies, Monoclonal, Humanized, Abatacept, Young Adult, Rheumatology, Psoriasis, Internal medicine, medicine, Humans, Aged, business.industry, Tumor Necrosis Factor-alpha, Adalimumab, Odds ratio, medicine.disease, Infliximab, Immunoglobulin G, Immunology, Multivariate Analysis, Immune-mediated inflammatory diseases, business, Follow-Up Studies
Abstract: Objective. We investigated the relationship between Staphylococcus aureus colonization and the use of immunosuppressive therapies in patients with immune-mediated inflammatory diseases (IMIDs). Methods. We prospectively enrolled IMID patients from the rheumatology and dermatology departments of Oregon Health & Science University. At enrolment, we surveyed patients for S. aureus infection risk factors and those using immune-modulating therapies, and evaluated their colonization status with bilateral nares and inguinal fold cultures. Patients were asked to follow up 612 months later for reassessment of colonization status by repeat culture. S. aureus isolates were tested for the presence of methicillin resistance by PCR. Results. We enrolled a total of 548 IMID patients. At enrolment, 219 (40.0%) patients were colonized with S. aureus, of which 27 (12.3%) were methicillin-resistant S. aureus (MRSA). Baseline colonization rates were similar between TNF-a inhibitor users and non-users (40.5% and 39.4%, P = 0.79), but were significantly higher for psoriasis patients compared with those with RA (43.5% and 31.8%, P = 0.02). A total of 384 patients were available for follow-up. Patients who were colonized at enrolment were more likely to be colonized at follow-up if they were treated with TNF-a inhibitors during the study as compared to patients without TNF-a inhibitor exposure [odds ratio (OR) = 2.2 (95% CI 1.1, 4.2), P = 0.02]. Conclusion. Patients with psoriasis are more likely to be colonized with S. aureus than patients with RA. Patients who are colonized with S. aureus are more likely to remain colonized if exposed to TNF-a inhibitors.
Published: 2013

250. Vecuronium pharmacokinetics in patients with major burns

Author: S. Yamashita, T. H. Han, K. Kaneda, Sukyung Woo, and Karina R. Vega-Villa
Subjects: Adult, Male, Burn injury, Vecuronium Bromide, business.industry, Liter, Middle Aged, Pathophysiology, NONMEM, Young Adult, Anesthesiology and Pain Medicine, Pharmacokinetics, Anesthesia, Pharmacodynamics, Medicine, Humans, In patient, Female, Neuromuscular Blocking Agents, business, Burns, Total body surface area
Abstract: Burn patients develop resistance to non-depolarizing neuromuscular blocking agents (NDNMBAs) and require a significantly large dose to produce a desired clinical response. Pathophysiological changes related to burn injury may alter pharmacokinetics (PK) and pharmacodynamics of NDNMBAs. The purpose of this study was to compare vecuronium PK in burns vs non-burns.Twenty adults, aged 23-58 yr, with 27-81% total body surface area (TBSA) burn, were studied at 4-57 post-burn days and compared with age- and sex-matched, non-burn controls. Vecuronium 0.12 mg kg(-1) was given i.v. as a single bolus within 10 s. Blood samples (n=20) were collected over 12 h at predetermined time points. NONMEM was used to describe plasma drug concentration-time profiles for burns and non-burns.A three-compartment model best described vecuronium concentration-time profiles. Burn patients showed enhanced distributional clearance at the terminal phase (0.12 vs 0.095 litre min(-1), P0.0001), which yielded shorter elimination half-life for vecuronium (5.5 vs 6.6 h, P0.001). BURN was the single most significant covariate that explained the altered vecuronium disposition in burns.The altered drug distribution between tissues may partially explain the known resistance to vecuronium in patients with major burns.
Published: 2013

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