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201. Improved measurement of the lifetime of the tau lepton

Author: M. Hapke, S. M. Gascon-Shotkin, D. E. Hutchcroft, M. J. Oreglia, P. Poffenberger, Matthew Evans, A. M. Rossi, G. W. Wilson, M. Hauschild, J. R. Carter, G. N. Patrick, P. Schütz, C. Markus, T. J. McMahon, P. Scharff-Hansen, Mathieu Doucet, R. D. Heuer, Fabrizio Fabbri, John Allison, W. J. McDonald, F. S. Merritt, B. C. Shen, Madjid Boutemeur, J. Schwiening, R. K. Carnegie, G. T. Jones, J. A. Wilson, W. Matthews, A. Gaidot, Siegfried Bethke, E. H. Vokurka, P. G. Estabrooks, Stefan Kluth, R. K. Keeler, A. M. Smith, M. A. Thomson, B. Lorazo, Shlomit Tarem, A. K. Honma, B. Nijjhar, W. G. Scott, G. Vasseur, H. M. Fischer, E. Lefebvre, A. Michelini, R. G. Kellogg, D. R. Rust, E. K. U. Gross, S. A. Robins, S. Braibant, F. Odorici, D. Rigby, R. J. Hemingway, R. Bartoldus, M. Sproston, N. Tesch, Csaba Hajdu, Stefano Marcellini, Tara Shears, Otmar Biebel, O. C. Cooke, P. Gagnon, Achim Stahl, J. Bechtluft, J. A. McKenna, P. M. Watkins, Gideon Bella, C. H. Shepherd-Themistocleous, H. J. Burckhart, Jacqueline Batley, B. W. Kennedy, P. Jovanovic, N. K. Watson, Gabriella Pasztor, Gregor Herten, J. von Krogh, N. I. Geddes, Michael Hildreth, N. L. Rodning, A. M. Lee, M. Tecchio, E. von Törne, Austin Ball, B. Poli, Peter Krieger, A. I. McNab, C. Y. Chang, B. Wilkens, P. A. Hart, James Pinfold, S. Yamashita, Sachio Komamiya, P. Igo-Kemenes, W. Mohr, D. G. Fong, C. Lewis, J. Gascon, A. Sittler, Dezso Horvath, M. J. Losty, A. Joly, G. Azuelos, J. Letts, Manuella Vincter, Alessandro Montanari, T. Omori, Norbert Wermes, J. Goldberg, Sherry Towers, T. Kawamoto, A. Posthaus, B. Nellen, G. A. Snow, C. P. Ward, B. Schmitt, J. P. Pansart, Hans-Christian Schultz-Coulon, L. A. del Pozo, C. Sbarra, H. Jeremie, R. E. Hughes-Jones, Randall Sobie, Jean-Arcady Meyer, P. Taras, U. Jost, R. Mir, Silvia Arcelli, Michael Kobel, Michael Schulz, G. D. Lafferty, J. O. Runolfsson, P. Weber, Theodoros Geralis, E. Ros, A. T. Watson, R. Kowalewski, R. Hawking, H. Mes, S. Söldner-Rembold, I. P. Duerdoth, Koji Yoshimura, J. E. Pilcher, G. Yekutieli, A. Malik, J. W. Gary, D. S. Koetke, M. J. Pearce, S. Orito, M. Rosvick, T. Behnke, C. Darling, A. Rooke, R. Howard, J. S. White, P. Fath, T. P. Kokott, H. G. Evans, M. J. Goodrick, A. A. Carter, E. do Couto e Silva, A. Luig, J. G. Layter, Marcello Mannelli, D. L. Rees, Andris Skuja, Ron Folman, Paul Kyberd, Roger Jones, S. Petzold, F. K. Loebinger, H. M. Bosch, E. A. Mckigney, K. Ametewee, J. Steuerer, Paolo Giacomelli, I. Cohen, F. Scharf, German Martinez, M. Hansroul, P. Mättig, G. D. Long, Gideon Alexander, H. Takeda, Julie Kirk, A. D. Schaile, F. G. Oakham, Tetsuro Mashimo, P. Utzat, Shoji Asai, W. P. Lai, Guenter Duckeck, R. W. Springer, Joleen Pater, Paolo Capiluppi, M. Gruwé, Sven Menke, M. G. Rison, Gunter Wolf, F. X. Gentit, Shlomo Dado, C. M. Hawkes, E. L. Barberio, Daniel Lellouch, R. Giacomelli, J. M. Roney, Dave Charlton, Takehiko Mori, A. S. Turcot, W. Gorn, O. Schaile, C. Dallapiccola, R. J. Homer, R. Bürgin, V. Zacek, R. Lahmann, D. C. Imrie, M. Palazzo, D. Axen, A. Jawahery, C. Charlesworth, Giora Mikenberg, S. Wotton, D. Chrisman, E. Tsur, Richard Nisius, Volker Blobel, N. Altekamp, M. Starks, D. M. Strom, M. Verzocchi, K. W. Bell, M. F. Turner-Watson, Peter Sherwood, Alexander Wagner, S. W. O'Neale, R. J. Barlow, D. J. Miller, M. Morii, Peter R Hobson, J. Pálinkás, Stephen Lloyd, J. C. Hill, Matthias Schröder, Marco Cuffiani, K. J. Anderson, M. Thiergen, H. Fukui, R. Rylko, J. Ludwig, K. Runge, P. Bock, J. Lauber, Misao Sasaki, P. Routenburg, S. B. Anderson, P. Szymanski, Ehud Duchovni, Stefania Xella, M. Jimack, S. L. Chu, G. P. Siroli, J. King, F. Strumia, Stan Bentvelsen, P. S. Wells, S. W. Gensler, T. Kobayashi, Terry Richard Wyatt, J. E. Bloomer, P. E.L. Clarke, M. K. Jones, J. P. Martin, M. Tscheulin, S. De Jong, U. Müller, A. J. Martin, H. Przysiezniak, A. N. Bell, I. J. Bloodworth, G. G. Hanson, C. K. Hargrove, G. Giacomelli, P. Schenk, Yoram Rozen, M. S. Dixit, Frans Meijers, M. Foucher, Junichi Kanzaki, D. Karlen, C. Burgard, B. Stockhausen, T. Wlodek, M. Fierro, J. E.G. Edwards, T. Hilse, C. Beeston, Claudio Grandi, Ekg Sarkisyan, P. W. Jeffreys, P. Bright-Thomas, J. J. Ward, P. Vikas, D. Lanske, C. Hartmann, D. E. Plane, Stephen Hillier, G. M. Dallavalle, Reda Tafirout, Frank Fiedler, M. R. Ingram, W. R. Gibson, H. O. Ogren, Christoph Geich-Gimbel, B. T. Bouwens, J. E. Conboy, A. Fürtjes, R. M. Brown, Lorne Levinson, Gilles Beaudoin, A. Skillman, R. Van Kooten, F. Wäckerle, D. M. Gingrich, T. J. Smith, K. Stephens, P. Berlich, V. Gibson, D. R. Ward, H. Lafoux, and T. Kress
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Electron–positron annihilation, Decay length, Impact parameter, Particle Physics - Experiment, Lepton
Abstract: A new measurement of the τ lifetime is presented. It uses data collected with the Opal detector during 1994, which almost doubles the size of the Opal τ sample. Two statistically independent techniques are used: an impact parameter analysis of one-prong decay tracks and a fit to the decay length distribution of three-prong decays. The lifetime obtained from the 1994 data by combining the results of these methods is τ τ = 289.7 ± 2.5 (stat)± 1.5 (sys) fs. When combined with the previous Opal τ lifetime measurement the improved τ lifetime is τ τ = 289.2 ± 1.7 (stat.) ± 1.2 (sys.) fs.

202. A STUDY OF CHARM MESON PRODUCTION IN SEMILEPTONIC B-DECAYS

Author: R. Lahmann, D. C. Imrie, N. J. Oldershaw, Gunter Wolf, M. Settles, T. Hilse, Yoram Rozen, R.J. Akers, D. E. Plane, G. P. Siroli, J. King, O. Runolfsson, M. Foucher, Christoph Schwick, O. Schaile, C. Beeston, S. Wotton, G. M. Dallavalle, Reda Tafirout, Claudio Grandi, P. Igo-Kemenes, Paolo Giacomelli, M. Fanti, T. Behnke, M. Starks, A. J. Martin, A. I. McNab, J. Goldberg, J. Steuerer, H. Jeremie, Junichi Kanzaki, D. Karlen, Alan Watson, U. Müller, H. Mes, I. P. Duerdoth, Eilam Gross, R. E. Hughes-Jones, U. Maur, C. Burgard, Madjid Boutemeur, C. H. Shepherd-Themistocleous, Kiyotomo Kawagoe, B. Nellen, A. Jawahery, P. Fath, R. J. Homer, R. W. Springer, K. Stephens, P. Weber, Otmar Biebel, Gregor Herten, P. Leblanc, C. M. Hawkes, W. R. Gibson, A. Beck, E. do Couto e Silva, Daniel Lellouch, D. L. Wagner, C. K. Hargrove, H. M. Fischer, G. A. Beck, Achim Stahl, P. Teixeira-Dias, S. G. Clowes, E. Heflin, Lorne Levinson, P. D. Phillips, Gilles Beaudoin, A. Skillman, Tohru Takeshita, G. G. Hanson, H. G. Evans, M. J. Goodrick, I. Cohen, R. D. Heuer, Shlomo Dado, P. Poffenberger, H. Deng, Fabrizio Fabbri, Dave Charlton, B. Wilkens, Matthias Schröder, Peter Fischer, M. Fierro, P. Schütz, B. Schmitt, T. Kobayashi, J. E.G. Edwards, M. Yurko, V. Zacek, Marco Cuffiani, P. G. Estabrooks, A. S. Turcot, Georges Azuelos, J. Letts, P. W. Jeffreys, James Pinfold, D. G. Fong, J. Gascon, J. E. Pilcher, Tara Shears, V. H. Winterer, Erez Etzion, R. Van Kooten, A. Michelini, Barry King, Stefan Kluth, D. Axen, Shlomit Tarem, Norbert Wermes, G. W. Wilson, Sherry Towers, T. Kawamoto, R. Bürgin, P. Le Du, B. Fabbro, S. L. Chu, P. Bright-Thomas, Margret Fincke-Keeler, P. A. Hart, M. Hauschild, C. Y. Chang, C. J. Oram, K. W. Bell, P. M. Watkins, V. Gibson, Peter Sherwood, G. Giacomelli, P. Taras, R. P. Middleton, P. Schenk, S. Orito, Alexander Wagner, C. Markus, Michael Kobel, E. Lefebvre, M. J. Pearce, Giora Mikenberg, M. Rosvick, J. J. Ward, Gideon Bella, P. Vikas, J. C. Hill, Misao Sasaki, Richard Keeler, I. Mori, Hans-Christian Schultz-Coulon, F. Odorici, J. Hagemann, Julie Kirk, H. Lafoux, S. A. Robins, M. W. Redmond, J. Ludwig, C. Darling, H. J. Burckhart, T. J. Smith, Jacqueline Batley, B. C. Shen, Randall Sobie, Michael Schulz, G. D. Lafferty, D. M. Gingrich, J. W. Gary, K. Runge, P. Bock, M. S. Dixit, Silvia Arcelli, D. R. Ward, D. S. Koetke, T. Kress, Frans Meijers, K. Ametewee, P. Berlich, O. Tousignant, P. Mättig, Shoji Asai, John Allison, M. Hausroul, S. Braibant, Siegfried Bethke, A. K. Honma, B. Nijjhar, T. W. Pritchard, Marcello Mannelli, J. E. Duboscq, Gideon Alexander, W. G. Scott, P. E.L. Clarke, M. J. Oreglia, U. C. Dunwoody, M. K. Jones, Andris Skuja, S. W. O'Neale, P. Gagnon, J. P. Martin, D. R. Rust, W. P. Lai, Paolo Capiluppi, M. Tscheulin, K. J. Anderson, Guenter Duckeck, Xinchou Lou, G. D. Long, Tetsuro Mashimo, R. G. Kellogg, S. De Jong, R. Kowalewski, J. R. Carter, J. M. Roney, A. M. Lee, G. N. Patrick, Stefano Marcellini, E. X. Gentit, P. Szymanski, H. Przysiezniak, G. A. Snow, C. P. Ward, D. L. Rees, M. J. Losty, S. Söldner-Rembold, B. Stockhausen, Paul Kyberd, F. K. Loebinger, Ehud Duchovni, C. Jui, D. Hochman, Stan Bentvelsen, G. T. Zorn, W. Gorn, R. Giacomelli, H. M. Bosch, J. C. Clayton, M. Jimack, Wolfram Dietrich Zeuner, N. I. Geddes, S. W. Gensler, S. J. Hillier, P. Scharff-Hansen, N. L. Rodning, A. M. Smith, G. Vasseur, B. Poli, B. Lorazo, Stephen Lloyd, M. Tecchio, Robert M Brown, R. Howard, Claude Leroy, J. P. Pansart, A. M. Rossi, T. J. McMahon, J. Schwiening, A. Buijs, R. K. Carnegie, D. M. Strom, C. Stegmann, M. Diumar, H. Fukui, J. A. Wilson, A. Yeaman, Sachio Komamiya, Theodoros Geralis, E. Ros, T. P. Kokott, A. Luig, Z. Li, P. S. Wells, M. F. Turner-Watson, O. C. Cooke, M. Morii, Peter R Hobson, Terry Richard Wyatt, P. Routenburg, R. Bartoldus, N. Capdevielle, J. von Krogh, H. O. Ogren, Christoph Geich-Gimbel, Dave Robinson, L. A. del Pozo, J. E. Conboy, A. Fürtjes, C. Sbarra, G. Yekutieli, F. S. Merritt, A. A. Carter, Ron Folman, Roger Jones, P. Utzat, J. A. McKenna, M. G. Rison, N. K. Watson, W. Mohr, A. Posthaus, P. A. Elcombe, F. Scharf, A. D. Schaile, W. Matthews, M. A. Thomson, A. Gaidot, T. Wlodek, M. Sproston, T. Tsukamoto, N. Tesch, C. Dallapiccola, J. D. Gillies, R. J. Barlow, D. J. Miller, D. Rigby, R. J. Hemingway, B. W. Kennedy, P. Jovanovic, Austin Ball, Peter Krieger, Manuella Vincter, Alessandro Montanari, R. Mir, J. Lauber, H. Takeda, F. G. Oakham, E. L. Barberio, J. G. Layter, C. Charlesworth, and I. J. Bloodworth
Subjects: Physics, Nuclear physics, Particle physics, Meson production, Muon, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Engineering (miscellaneous), Particle Physics - Experiment
Abstract: The results of a study of charm meson production in semileptonic B hadron decays are presented. Based on a sample of 1.72 million hadronic Z0 decays the following product branching ratios (averaged over electrons and muons) are obtained: $$\begin{gathered} B(b \to D^ + \ell X) \cdot B(D^ + \to K^ - \pi ^ + \pi ^ + ) \hfill \\ = (1.82 \pm 0.20 \pm 0.12) \times 10^{ - 3} , \hfill \\ B(b \to D^0 \ell X) \cdot B(D^0 \to K^ - \pi ^ + ) \hfill \\ = (2.52 \pm 0.14 \pm 0.17) \times 10^{ - 3} \hfill \\ B(b \to D^* \ell X) \cdot B(D^{* + } \to D^0 \pi ^ + ) \cdot B(D^0 \to K^ - \pi ^ + ) \hfill \\ = (7.53 \pm 0.47 \pm 0.56) \times 10^{ - 4} \hfill \\ \end{gathered} $$ where the first error is statistical and the second systematic.

203. Search for charged Higgs bosons using the OPAL detector at LEP

Author: M. Hapke, Siegfried Bethke, A. K. Honma, D. E. Hutchcroft, B. Nijjhar, W. G. Scott, C. Dallapiccola, N. J. Oldershaw, D. R. Rust, A. M. Lee, O. Schaile, M. Tecchio, E. von Törne, K. Ametewee, R. Kowalewski, N. K. Watson, Gideon Alexander, Paolo Capiluppi, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, N. Altekamp, M. J. Oreglia, C. M. Hawkes, Daniel Lellouch, Takehiko Mori, V. Zacek, E. Lefebvre, R. J. Barlow, D. J. Miller, C. Darling, T. J. Smith, P. Mättig, Shoji Asai, J. R. Carter, O. C. Cooke, F. Odorici, G. W. Wilson, M. Hauschild, G. N. Patrick, J. Palinkas, C. Hartmann, D. E. Plane, Ehud Duchovni, C. Markus, W. Mohr, A. Posthaus, P. Scharff-Hansen, R. W. Springer, T. Hilse, J. von Krogh, M. Jimack, Yoram Rozen, Shlomo Dado, G. M. Dallavalle, Otmar Biebel, O. Runolfsson, M. Foucher, T. Behnke, Gideon Bella, E. H. Vokurka, F. Palmonari, R. J. Hawkings, F. S. Merritt, J. Steuerer, C. H. Shepherd-Themistocleous, H. J. Burckhart, R. D. Heuer, L. A. del Pozo, C. Sbarra, D. Karlen, P. Gagnon, Tara Shears, D. Rigby, R. J. Hemingway, S. W. Gensler, C. Burgard, D. L. Wagner, Fabrizio Fabbri, Alan Watson, Eilam Gross, C. Beeston, S. J. Hillier, E. Tsur, Richard Keeler, Jacqueline Batley, Claudio Grandi, B. W. Kennedy, R. Van Kooten, K. W. Bell, P. Jovanovic, U. C. Dunwoody, Austin Ball, Giora Mikenberg, D. L. Rees, W. R. Gibson, G. Yekutieli, Peter Krieger, A. Sittler, I. J. Blood worth, J. C. Hill, G. Azuelos, P. A. Hart, B. T. Bouwens, Gregor Herten, Misao Sasaki, A. A. Carter, J. Bechtluft, J. A. McKenna, F. Scharf, Manuella Vincter, Alessandro Montanari, Stefan Kluth, F. Wäckerle, German Martinez, Richard Nisius, Ron Folman, Roger Jones, A. M. Smith, Shlomit Tarem, D. M. Gingrich, H. M. Bosch, T. Omori, S. W. O'Neale, B. Wilkens, M. J. Pearce, Lorne Levinson, U. Jost, R. Mir, H. Mes, I. P. Duerdoth, K. J. Anderson, A. D. Schaile, R. Howard, D. Chrisman, J. Letts, Marco Cuffiani, W. Matthews, P. Berlich, P. D. Phillips, B. J. King, Gilles Beaudoin, P. Utzat, S. L. Chu, S. Braibant, Gabriella Pasztor, J. Lauber, J. P. Pansart, A. Skillman, R. Bartoldus, P. Fath, C. Y. Chang, M. A. Thomson, J. E. Pilcher, M. G. Rison, H. Takeda, Norbert Wermes, Sherry Towers, G. Vasseur, B. Lorazo, John Allison, C. J. Oram, T. Kawamoto, G. A. Snow, C. P. Ward, F. G. Oakham, P. Taras, H. O. Ogren, Christoph Geich-Gimbel, Michael Kobel, Stephen Lloyd, S. Söldner-Rembold, E. L. Barberio, S. G. Clowes, M. Fierro, T. Wlodek, M. Sproston, T. J. McMahon, D. M. Strom, J. Schwiening, J. E. Conboy, Robert M Brown, J. E.G. Edwards, C. Stegmann, R. K. Carnegie, S. Orito, F. Strumia, Reda Tafirout, Julie Kirk, Matthias Schröder, T. Tsukamoto, N. Tesch, A. I. McNab, H. Fukui, J. A. Wilson, R. Rylko, M. Rosvick, J. Goldberg, Ekg Sarkisyan, P. W. Jeffreys, A. Fürtjes, P. Poffenberger, James Pinfold, B. Nellen, T. Kobayashi, P. Schütz, D. G. Fong, C. Lewis, P. Bright-Thomas, D. Axen, P. S. Wells, A. Jawahery, A. Gaidot, Dave Charlton, J. J. Ward, P. Vikas, J. Gascon, U. Müller, Terry Richard Wyatt, J. E. Bloomer, Peter Sherwood, D. Lanske, A. J. Martin, H. G. Evans, Alexander Wagner, M. J. Goodrick, I. Cohen, J. Ludwig, K. Runge, P. Bock, R. G. Kellogg, C. K. Hargrove, Gunter Wolf, F. X. Gentit, M. F. Turner-Watson, M. Morii, Peter R Hobson, P. Routenburg, Csaba Hajdu, S. Wotton, R. Bürgin, B. Fabbro, A. Malik, Stefano Marcellini, J. W. Gary, D. S. Koetke, R. Lahmann, D. C. Imrie, M. Palazzo, G. Giacomelli, Marcello Mannelli, Andris Skuja, G. P. Siroli, J. King, Sachio Komamiya, G. D. Long, Tetsuro Mashimo, Theodoros Geralis, E. Ros, B. Stockhausen, Paul Kyberd, F. K. Loebinger, Joleen Pater, T. P. Kokott, W. Gorn, A. Luig, P. Weber, R. Giacomelli, A. Joly, S. Yamashita, P. Igo-Kemenes, Margret Fincke-Keeler, H. Jeremie, R. E. Hughes-Jones, E. do Couto e Silva, Sven Menke, G. A. Beck, Achim Stahl, P. E.L. Clarke, M. K. Jones, B. Schmitt, J. P. Martin, M. Tscheulin, S. De Jong, Paolo Giacomelli, M. Hansroul, H. Przysiezniak, R. J. Homer, A. N. Bell, N. I. Geddes, Michael Hildreth, N. L. Rodning, B. Poli, J. G. Layter, H. M. Fischer, A. Michelini, C. Charlesworth, S. A. Robins, Stefania Xella, G. G. Hanson, S. M. Gascon-Shotkin, P. Schenk, A. M. Rossi, M. S. Dixit, Frans Meijers, Silvia Arcelli, E. A. Mckigney, W. P. Lai, J. M. Roney, Madjid Boutemeur, P. G. Estabrooks, M. St arks, P. M. Watkins, Hans-Christian Schultz-Coulon, Randall Sobie, Michael Schulz, G. D. Lafferty, T. W. Pritchard, Guenter Duckeck, A. S. Turcot, S. B. Anderson, P. Szymanski, Stan Bentvelsen, K. Stephens, V. Gibson, D. R. Ward, H. Lafoux, T. Kress, Frank Fiedler, D. Hochman, W. J. McDonald, and B. C. Shen
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Electron–positron annihilation, High Energy Physics::Phenomenology, Detector, Upper and lower bounds, Lower limit, Nuclear physics, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment, Boson
Abstract: A search is described to detect charged Higgs bosons via the process Z0 → H+H−, using data collected by the OPAL detector at LEP which correspond to an integrated luminosity of approximately 110 pb−1. It is assumed that the H+ boson decays only to τ+ντ and cs final states. From the negative outcome of this search a lower bound of 44.1 GeV (95% CL) is derived for the mass of the charged Higgs boson.

204. INCLUSIVE STRANGE VECTOR AND TENSOR MESON PRODUCTION IN HADRONIC Z(0) DECAYS

Author: G. D. Long, Otmar Biebel, A. S. Turcot, Tetsuro Mashimo, D. L. Wagner, W. Gorn, V. H. Winterer, H. Deng, J. G. Layter, P. A. Elcombe, Gregor Herten, J. Letts, D. Hochman, C. Charlesworth, Madjid Boutemeur, B. Wilkens, J. P. Pansart, Tara Shears, Norbert Wermes, Sherry Towers, T. Kawamoto, Richard Keeler, Kiyotomo Kawagoe, P. Szymanski, P. A. Hart, C. Jui, Stan Bentvelsen, Hans-Christian Schultz-Coulon, J. E. Pilcher, Randall Sobie, Michael Schulz, G. D. Lafferty, M. J. Pearce, T. W. Pritchard, Guenter Duckeck, P. Scharff-Hansen, R. Bartoldus, A. I. McNab, J. C. Clayton, S. Orito, M. Rosvick, J. Goldberg, R. Howard, Claude Leroy, F. Scharf, C. Y. Chang, J. Steuerer, P. Igo-Kemenes, A. M. Smith, B. Nellen, C. Sbarra, U. Müller, P. Leblanc, A. D. Schaile, G. Vasseur, B. Lorazo, T. Hilse, P. G. Estabrooks, P. E.L. Clarke, U. C. Dunwoody, M. K. Jones, J. P. Martin, M. Tscheulin, P. Weber, H. O. Ogren, Christoph Geich-Gimbel, E. Lefebvre, B. C. Shen, S. De Jong, G. W. Wilson, M. Fanti, H. Jeremie, M. F. Turner-Watson, P. Taras, H. G. Evans, M. Morii, James Pinfold, M. J. Goodrick, I. Cohen, F. Odorici, Siegfried Bethke, M. Hauschild, H. Przysiezniak, Peter R Hobson, C. K. Hargrove, A. M. Rossi, S. Braibant, M. J. Oreglia, R. E. Hughes-Jones, D. G. Fong, O. Runolfsson, U. Maur, Paolo Giacomelli, A. K. Honma, J. Gascon, D. E. Plane, B. Nijjhar, W. G. Scott, M. Hansroul, W. Matthews, Michael Kobel, C. Markus, K. Stephens, M. A. Thomson, Matthias Schröder, P. Routenburg, Michael Dittmar, A. Buijs, D. M. Strom, C. Stegmann, Erez Etzion, G. G. Hanson, Marco Cuffiani, Stefan Kluth, G. Yekutieli, J. E. Conboy, E. K. U. Gross, C. H. Shepherd-Themistocleous, T. Wlodek, M. Sproston, J. W. Gary, J. R. Carter, D. S. Koetke, N. J. Oldershaw, Marcello Mannelli, J. E. Duboscq, C. Dallapiccola, G. N. Patrick, C. Beeston, P. M. Watkins, H. Fukui, G. A. Snow, C. P. Ward, Shlomit Tarem, G. M. Dallavalle, G. Giacomelli, Stephen Lloyd, A. Fürtjes, R.J. Akers, C. J. Oram, M. J. Losty, B. Stockhausen, Paul Kyberd, F. K. Loebinger, R. J. Homer, D. L. Rees, P. Schenk, Sachio Komamiya, M. Tecchio, Theodoros Geralis, E. Ros, S. Söldner-Rembold, Margret Fincke-Keeler, M. S. Dixit, J. D. Gillies, Frans Meijers, V. Gibson, R. P. Middleton, N. I. Geddes, Ehud Duchovni, R. D. Heuer, Fabrizio Fabbri, M. Jimack, S. L. Chu, Alan Watson, Julie Kirk, H. Lafoux, E. do Couto e Silva, T. Tsukamoto, N. Tesch, N. K. Watson, Gunter Wolf, F. X. Gentit, H. Mes, D. R. Ward, T. Kress, T. P. Kokott, Claudio Grandi, R. Lahmann, D. C. Imrie, A. Luig, F. Palmonari, N. L. Rodning, O. Schaile, S. W. Gensler, S. J. Hillier, T. Kobayashi, R. W. Springer, S. Wotton, F. S. Merritt, P. S. Wells, D. R. Rust, Tohru Takeshita, I. P. Duerdoth, P. Fath, Shlomo Dado, A. A. Carter, Ron Folman, R. Giacomelli, Roger Jones, R. J. Barlow, D. J. Miller, B. Poli, Terry Richard Wyatt, G. P. Siroli, J. King, W. Mohr, Christoph Schwick, M. Starks, P. Poffenberger, A. Posthaus, Georges Azuelos, Barry King, A. J. Martin, A. M. Lee, P. Utzat, Reda Tafirout, R. Kowalewski, Gideon Bella, K. W. Bell, Giora Mikenberg, John Allison, Peter Fischer, J. C. Hill, Misao Sasaki, R. Mir, H. J. Burckhart, G. A. Beck, M. G. Rison, K. Ametewee, H. M. Fischer, Achim Stahl, Jacqueline Batley, P. Teixeira-Dias, A. Michelini, Gideon Alexander, P. Schütz, J. Lauber, Paolo Capiluppi, A. Yeaman, R. Van Kooten, J. A. McKenna, R. G. Kellogg, A. Gaidot, T. J. McMahon, H. Takeda, S. A. Robins, W. R. Gibson, Stefano Marcellini, F. G. Oakham, B. Schmitt, E. L. Barberio, D. M. Gingrich, D. Rigby, R. J. Hemingway, A. Beck, J. Schwiening, P. Berlich, E. Heflin, Xinchou Lou, O. Tousignant, R. K. Carnegie, R. M. Brown, Lorne Levinson, M. W. Redmond, B. W. Kennedy, P. Jovanovic, P. D. Phillips, Austin Ball, Peter Krieger, Gilles Beaudoin, J. A. Wilson, Manuella Vincter, A. Skillman, Alessandro Montanari, S. W. O'Neale, Dave Charlton, K. J. Anderson, R. Bürgin, B. Fabbro, O. C. Cooke, N. Capdevielle, J. von Krogh, Dave Robinson, L. A. del Pozo, Silvia Arcelli, W. P. Lai, J. M. Roney, T. Behnke, D. Axen, A. Jawahery, Peter Sherwood, S. G. Clowes, M. Fierro, J. E.G. Edwards, M. Yurko, P. W. Jeffreys, Alexander Wagner, J. Hagemann, J. Ludwig, K. Runge, P. Bock, P. Bright-Thomas, J. J. Ward, P. Vikas, P. Gagnon, G. T. Zorn, H. M. Bosch, Wolfram Dietrich Zeuner, C. Darling, T. J. Smith, P. Mättig, Shoji Asai, C. M. Hawkes, Daniel Lellouch, Takehiko Mori, V. Zacek, I. J. Bloodworth, M. Settles, Yoram Rozen, M. Foucher, Junichi Kanzaki, D. Karlen, C. Burgard, and Andris Skuja
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Hadron, Elementary particle, State (functional analysis), Nuclear physics, Field theory (psychology), Tensor, Quantum field theory, Engineering (miscellaneous), Particle Physics - Experiment
Abstract: Measurements have been made in the OPAL experiment at LEP of the inclusive production of strange vector φ(1020) and K*(892)0 mesons, and the tensor meson K2*(1430)0. The overall production rates per hadronic Z0 decay have been determined to be 0.100±0.004stat.±0.007syst. φ(1020) mesons, 0.74±0.03stat.±0.03syst. K*(892)0 mesons and (forxE

205. A measurement of the hadronic decay current and the ντ-helicity in τ- → π- π- π+ ντ

Author: Ackerstaff, K., Alexander, G., Allison, J., Altekamp, N., Ametewee, K., Anderson, K. J., Anderson, S., Arcelli, S., Asai, S., Axen, D., Azuelos, G., Ball, A. H., Barberio, E., Barlow, R. J., Bartoldus, R., Batley, J. R., Bechtluft, J., Beeston, C., Behnke, T., Bell, A. N., Bell, K. W., Bella, G., Bentvelsen, S., Berlich, P., Bethke, S., Biebel, O., Biguzzi, A., Bird, S. D., Blobel, V., Bloodworth, I. J., Bloomer, J. E., Bobinski, M., Bock, P., Bosch, H. M., Boutemeur, M., Bouwens, B. T., Braibant, S., Brown, R. M., Burckhart, H. J., Burgard, C., Bürgin, R., Capiluppi, P., Carnegie, R. K., Carter, A. A., Carter, J. R., Chang, C. Y., Charlton, D. G., Chrisman, D., Clarke, P. E. L., Cohen, I., Conboy, J. E., Cooke, O. C., Cuffiani, M., Dado, S., Dallapiccola, C., Dallavalle, G. M., Jong, S., Del Pozo, L. A., Desch, K., Dixit, M. S., Do Couto E Silva, E., Doucet, M., Duchovni, E., Duckeck, G., Duerdoth, I. P., Eatough, D., Edwards, J. E. G., Estabrooks, P. G., Evans, H. G., Evans, M., Fabbri, F., Fanti, M., Fath, P., Faust, A. A., Fiedler, F., Fierro, M., Fischer, H. M., Ron Folman, Fong, D. G., Foucher, M., Fürtjes, A., Gagnon, P., Gaidot, A., Gary, J. W., Gascon, J., Gascon-Shotkin, S. M., Geddes, N. I., Geich-Gimbel, C., Gentil, F. X., Geralis, T., Giacomelli, G., Giacomelli, P., Giacomelli, R., Gibson, V., Gibson, W. R., Gingrich, D. M., Glenzinski, D., Goldberg, J., Goodrick, M. J., Gorn, W., Grandi, C., Gross, E., Grunhaus, J., Gruwé, M., Hajdu, C., Hanson, G. G., Hansroul, M., Hapke, M., Hargrove, C. K., Hart, P. A., Hartmann, C., Hauschild, M., Hawkes, C. M., Hawkings, R., Hemingway, R. J., Herndon, M., Herten, G., Heuer, R. D., Hildreth, M. D., Hill, J. C., Hillier, S. J., Hilse, T., Hobson, P. R., Homer, R. J., Honma, A. K., Horváth, D., Howard, R., Hughes-Jones, R. E., Hutchcroft, D. E., Igo-Kemenes, P., Imrie, D. C., Ingram, M. R., Ishii, K., Jawahery, A., Jeffreys, P. W., Jeremie, H., Jimack, M., Joly, A., Jones, C. R., Jones, G., Jones, M., Jones, R. W. L., Jost, U., Jovanovic, P., Junk, T. R., Karlen, D., Kawagoe, K., Kawamoto, T., Keeler, R. K., Kellogg, R. G., Kennedy, B. W., Kirk, J., Kluth, S., Kobayashi, T., Kobel, M., Koetke, D. S., Kokott, T. P., Kolrep, M., Komamiya, S., Kress, T., Krieger, P., Krogh, J., Kyberd, P., Lafferty, G. D., Lafoux, H., Lahmann, R., Lai, W. P., Lanske, D., Lauber, J., Lautenschlager, S. R., Layter, J. G., Lazic, D., Lee, A. M., Lefebvre, E., Lellouch, D., Letts, J., Levinson, L., Lewis, C., Lloyd, S. L., Loebinger, F. K., Long, G. D., Losty, M. J., Ludwig, J., Macchiolo, A., Macpherson, A., Malik, A., Mannelli, M., Marcellini, S., Markus, C., Martin, A. J., Martin, J. P., Martinez, G., Mashimo, T., Matthews, W., Mättig, P., Mcdonald, W. J., Mckenna, J., Mckigney, E. A., Mcmahon, T. J., Mcnab, A. I., Mcpherson, R. A., Meijers, F., Menke, S., Merritt, F. S., Mes, H., Meyer, J., Michelini, A., Mikenberg, G., Miller, D. J., Mir, R., Mohr, W., Montanari, A., Mori, T., Morii, M., Müller, U., Nagai, K., Nakamura, I., Neal, H. A., Nellen, B., Nijjhar, B., Nisius, R., O Neale, S. W., Oakham, F. G., Odorici, F., Ogren, H. O., Oldershaw, N. J., Omori, T., Oreglia, M. J., Orito, S., Pálinkás, J., Pásztor, G., Pater, J. R., Patrick, G. N., Patt, J., Pearce, M. J., Petzold, S., Pfeifenschneider, P., Pilcher, J. E., Pinfold, J., Plane, D. E., Poffenberger, P., Poli, B., Posthaus, A., Przysiezniak, H., Rees, D. L., Rigby, D., Robertson, S., Robins, S. A., Rodning, N., Roney, J. M., Rooke, A., Ros, E., Rossi, A. M., Rosvick, M., Routenburg, P., Rozen, Y., Runge, K., Runolfsson, O., Ruppel, U., Rust, D. R., Rylko, R., Sachs, K., Sarkisyan, E. K. G., Sasaki, M., Sbarra, C., Schaile, A. D., Schaile, O., Scharf, F., Scharff-Hansen, P., Schenk, P., Schmitt, B., Schmitt, S., Schröder, M., Schultz-Coulon, H. C., Schulz, M., Schumacher, M., Schütz, P., Scott, W. G., Shears, T. G., Shen, B. C., Shepherd-Themistocleous, C. H., Sherwood, P., Siroli, G. P., Sittler, A., Skillman, A., Skuja, A., Smith, A. M., Smith, T. J., Snow, G. A., Sobie, R., Söldner-Rembold, S., Springer, R. W., Sproston, M., Stahl, A., Steiert, M., Stephens, K., Steuerer, J., Stockhausen, B., Strom, D., Szymanski, P., Tafirout, R., Talbot, S. D., Tanaka, S., Taras, P., Tarem, S., Thiergen, M., Thomson, M. A., Törne, E., Towers, S., Trigger, I., Tsukamoto, T., Tsur, E., Turcot, A. S., Turner-Watson, M. F., Utzat, P., Kooten, R., Vasseur, G., Verzocchi, M., Vikas, P., Vincter, M., Vokurka, E. H., Wäckerle, F., Wagner, A., Ward, C. P., Ward, D. R., Ward, J. J., Watkins, P. M., Watson, A. T., Watson, N. K., Wells, P. S., Wermes, N., White, J. S., Wilkens, B., Wilson, G. W., Wilson, J. A., Wolf, G., Wotton, S., Wyatt, T. R., Yamashita, S., Yekutieli, G., Zacek, V., and Zer-Zion, D.

206. An updated study of B meson oscillations using dilepton events

Author: Ackerstaff, K., Alexander, G., Allison, J., Altekamp, N., Anderson, K. J., Anderson, S., Arcelli, S., Asai, S., Axen, D., Azuelos, G., Ball, A. H., Barberio, E., Barlow, R. J., Bartoldus, R., Batley, J. R., Baumann, S., Bechtluft, J., Beeston, C., Behnke, T., Bell, A. N., Bell, K. W., Bella, G., Bentvelsen, S., Berlich, P., Bethke, S., Biebel, O., Biguzzi, A., Bird, S. D., Blobel, V., Bloodworth, I. J., Bloomer, J. E., Bobinski, M., Bock, P., Bonacorsi, D., Boutemeur, M., Bouwens, B. T., Braibant, S., Brigliadori, L., Brown, R. M., Burckhart, H. J., Burgard, C., Bürgin, R., Capiluppi, P., Carnegie, R. K., Carter, A. A., Carter, J. R., Chang, C. Y., Charlton, D. G., Chrisman, D., Clarke, P. E. L., Cohen, I., Conboy, J. E., Cooke, O. C., Cuffiani, M., Dado, S., Dallapiccola, C., Dallavalle, G. M., Jong, S., Del Pozo, L. A., Desch, K., Dixit, M. S., Do Couto E Silva, E., Doucet, M., Duchovni, E., Duckeck, G., Duerdoth, I. P., Eatough, D., Edwards, J. E. G., Estabrooks, P. O., Evans, H. G., Evans, M., Fabbri, F., Fanti, M., Faust, A. A., Fiedler, F., Fierro, M., Fischer, H. M., Fleck, I., Ron Folman, Fong, D. G., Foucher, M., Fukui, H., Fürtjes, A., Futyan, D. I., Gagnon, P., Gary, J. W., Gascon, J., Gascon-Shotkin, S. M., Geddes, N. I., Geich-Gimbel, C., Geralis, T., Giacomelli, G., Giacomelli, P., Giacomelli, R., Gibson, V., Gibson, W. R., Gingrich, D. M., Glenzinski, D., Goldberg, J., Goodrick, M. J., Gorn, W., Grandi, C., Gross, E., Grunhaus, J., Gruwé, M., Hajdu, C., Hanson, G. G., Hansroul, M., Hapke, M., Hargrove, C. K., Hart, P. A., Hartmann, C., Hauschild, M., Hawkes, C. M., Hawkings, R., Hemingway, R. J., Herndon, M., Herten, G., Heuer, R. D., Hildreth, M. D., Hill, J. C., Hillier, S. J., Hilse, T., Hobson, P. R., Homer, R. J., Honma, A. K., Horváth, D., Howard, R., Hutchcroft, D. E., Igo-Kemenes, P., Imrie, D. C., Ingram, M. R., Ishii, K., Jawahery, A., Jeffreys, P. W., Jeremie, H., Jimack, M., Joly, A., Jones, C. R., Jones, G., Jones, M., Jost, U., Jovanovic, P., Junk, T. R., Karlen, D., Kartvelishvili, V., Kawagoe, K., Kawamoto, T., Keeler, R. K., Kellogg, R. G., Kennedy, B. W., Kirk, J., Klier, A., Kluth, S., Kobayashi, T., Kobel, M., Koetke, D. S., Kokott, T. P., Kolrep, M., Komamiya, S., Kress, T., Krieger, P., Krogh, J., Kyberd, P., Lafferty, G. D., Lahmann, R., Lai, W. P., Lanske, D., Lauber, J., Lautenschlager, S. R., Layter, J. G., Lazic, D., Lee, A. M., Lefebvre, E., Lellouch, D., Letts, J., Levinson, L., Lloyd, S. L., Loebinger, F. K., Long, G. D., Losty, M. J., Ludwig, J., Macchiolo, A., Macpherson, A., Mannelli, M., Marcellini, S., Markus, C., Martin, A. J., Martin, J. P., Martinez, G., Mashimo, T., Mättig, P., Mcdonald, W. J., Mckenna, J., Mckigney, E. A., Mcmahon, T. J., Mcpherson, R. A., Meijers, F., Menke, S., Merritt, F. S., Mes, H., Meyer, J., Michelini, A., Mikenberg, G., Miller, D. J., Mincer, A., Mir, R., Mohr, W., Montanari, A., Mori, T., Morii, M., Müller, U., Nagai, K., Nakamura, I., Neal, H. A., Nellen, B., Nisius, R., O Neale, S. W., Oakham, F. G., Odorici, F., Ogren, H. O., Oldershaw, N. J., Oreglia, M. J., Orito, S., Pálinkás, J., Pásztor, G., Pater, J. R., Patrick, G. N., Patt, J., Pearce, M. J., Petzold, S., Pfeifenschneider, P., Pilcher, J. E., Pinfold, J., Plane, D. E., Poffenberger, P., Poli, B., Posthaus, A., Przysiezniak, H., Rees, D. L., Rigby, D., Robertson, S., Robins, S. A., Rodning, N., Roney, J. M., Rooke, A., Ros, E., Rossi, A. M., Rosvick, M., Routenburg, P., Rozen, Y., Runge, K., Runolfsson, O., Ruppel, U., Rust, D. R., Rylko, R., Sachs, K., Saeki, T., Sarkisyan, E. K. G., Sbarra, C., Schaile, A. D., Schaile, O., Scharf, F., Scharff-Hansen, P., Schenk, P., Schieck, J., Schleper, P., Schmitt, B., Schmitt, S., Schöning, A., Schröder, M., Schultz-Coulon, H. C., Schulz, M., Schumacher, M., Schwick, C., Scott, W. G., Shears, T. G., Shen, B. C., Shepherd-Themistocleous, C. H., Sherwood, P., Siroli, G. P., Sittler, A., Skillman, A., Skuja, A., Smith, A. M., Snow, G. A., Sobie, R., Söldner-Rembold, S., Springer, R. W., Sproston, M., Stephens, K., Steuerer, J., Stockhausen, B., Stoll, K., Strom, D., Szymanski, P., Tafirout, R., Talbot, S. D., Tanaka, S., Taras, P., Tarem, S., Teuscher, R., Thiergen, M., Thomson, M. A., Törne, E., Towers, S., Trigger, I., Tsur, E., Turcot, A. S., Turner-Watson, M. F., Utzat, P., Kooten, R., Verzocchi, M., Vikas, P., Vokurka, E. H., Voss, H., Wäckerle, F., Wagner, A., Ward, C. P., Ward, D. R., Watkins, P. M., Watson, A. T., Watson, N. K., Wells, P. S., Wermes, N., White, J. S., Wilkens, B., Wilson, G. W., Wilson, J. A., Wolf, G., Wyatt, T. R., Yamashita, S., Yekutieli, G., Zacek, V., and Zer-Zion, D.
Subjects: S system, Particle physics, Physics and Astronomy (miscellaneous), B%28B%29OVER-BAR%29%2FGAMMA%28Z%280%29->HADRONS%29%22">GAMMA(Z(0)->B(B)OVER-BAR)/GAMMA(Z(0)->HADRONS), Hadron, FOS: Physical sciences, FREQUENCY, 01 natural sciences, DECAYS, Lower limit, High Energy Physics - Experiment, Momentum, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, B meson, 010306 general physics, Eigenvalues and eigenvectors, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, LEP, MICROVERTEX DETECTOR, LEPTONS, JET CHARGE, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract: This paper reports a study of B meson oscillations using hadronic Z^0 decays with two identified leptons, and updates a previous publication by including data collected in 1994. Decay times are reconstructed for each of the semileptonic B decays by forming vertices which include the lepton and by estimating the B meson momentum. The mass difference, Delta(m_d), between the two mass eigenstates in the B^0_d system is measured to be 0.430 +/- 0.043 + 0.028 - 0.030 ps^-1, where the first error is statistical and the second error is systematic. For the B^0_s system, a lower limit of Delta(m_s) > 2.2 ps^-1 is obtained at 95% C.L., 18 pages, LaTeX, 5 eps figures included, submitted to Zeit. f. Physik

207. Bose-Einstein correlations in e+e- → W+W- at 172 and 183 GeV

Author: Abbiendi, G., Ackerstaff, K., Alexander, G., Allison, J., Altekamp, N., Anderson, K. J., Anderson, S., Arcelli, S., Asai, S., Ashby, S. F., Axen, D., Azuelos, G., Ball, A. H., Barberio, E., Barlow, R. J., Bartoldus, R., Batley, J. R., Baumann, S., Bechtluft, J., Behnke, T., Bell, K. W., Bella, G., Bellerive, A., Bentvelsen, S., Bethke, S., Betts, S., Biebel, O., Biguzzi, A., Bird, S. D., Blobel, V., Bloodworth, I. J., Bock, P., Böhme, J., Bonacorsi, D., Boutemeur, M., Braibant, S., Bright-Thomas, P., Brigliadori, L., Brown, R. M., Burckhart, H. J., Capiluppi, P., Carnegie, R. K., Carter, A. A., Carter, J. R., Chang, C. Y., Charlton, D. G., Chrisman, D., Ciocca, C., Clarke, P. E. L., Clay, E., Cohen, I., Conboy, J. E., Cooke, O. C., Couyoumtzelis, C., Coxe, R. L., Cuffiani, M., Dado, S., Dallavalle, G. M., Davis, R., Jong, S., Roeck, A., Dervan, P., Desch, K., Dienes, B., Dixit, M. S., Dubbert, J., Duchovni, E., Duckeck, G., Duerdoth, I. P., Eatough, D., Estabrooks, P. G., Etzion, E., Fabbri, F., Fanti, M., Faust, A. A., Fiedler, F., Fierro, M., Fleck, I., Ron Folman, Fürtjes, A., Futyan, D. I., Gagnon, P., Gary, J. W., Gascon, J., Gascon-Shotkin, S. M., Gaycken, G., Geich-Gimbel, C., Giacomelli, G., Giacomelli, P., Gibson, V., Gibson, W. R., Gingrich, D. M., Glenzinski, D., Goldberg, J., Gorn, W., Grandi, C., Graham, K., Gross, E., Grunhaus, J., Gruwé, M., Hanson, G. G., Hansroul, M., Hapke, M., Harder, K., Harel, A., Hargrove, C. K., Hartmann, C., Hauschild, M., Hawkes, C. M., Hawkings, R., Hemingway, R. J., Herndon, M., Herten, G., Heuer, R. D., Hildreth, I. M. D., Hill, J. C., Hobson, P. R., Hoch, M., Hocker, A., Hoffman, K., Homer, R. J., Honma, A. K., Horváth, D., Hossain, K. R., Howard, R., Hüntemeyer, P., Igo-Kemenes, P., Imrie, D. C., Ishii, K., Jacob, F. R., Jawahery, A., Jeremie, H., Jimack, M., Jones, C. R., Jovanovic, P., Junk, T. R., Karlen, D., Kartvelishvili, V., Kawagoe, K., Kawamoto, T., Kayal, P. I., Keeler, R. K., Kellogg, R. G., Kennedy, B. W., Kim, D. H., Klier, A., Kluth, S., Kobayashi, T., Kobel, M., Koetke, D. S., Kokott, T. P., Kolrep, M., Komamiya, S., Kowalewski, R. V., Kress, T., Krieger, P., Krogh, J., Kuhl, T., Kyberd, P., Lafferty, G. D., Landsman, H., Lanske, D., Lauber, J., Lautenschlager, S. R., Lawson, I., Layter, J. G., Lazic, D., Lee, A. M., Lellouch, D., Letts, J., Levinson, L., Liebisch, R., List, B., Littlewood, C., Lloyd, A. W., Lloyd, S. L., Loebinger, F. K., Long, G. D., Losty, M. J., Ludwig, J., Liu, D., Macchiolo, A., Macpherson, A., Mader, W., Mannelli, M., Marcellini, S., Markopoulos, C., Martin, A. J., Martin, J. P., Martinez, G., Mashimo, T., Mättig, P., Mcdonald, W. J., Mckenna, J., Mckigney, E. A., Mcmahon, T. J., Mcpherson, R. A., Meijers, F., Menke, S., Merritt, F. S., Mes, H., Meyer, J., Michelini, A., Mihara, S., Mikenberg, G., Miller, D. J., Mir, R., Mohr, W., Montanari, A., Mori, T., Nagai, K., Nakamura, I., Neal, H. A., Nellen, B., Nisius, R., O Neale, S. W., Oakham, F. G., Odorici, F., Ogren, H. O., Oreglia, M. J., Orito, S., Pálinkás, J., Pásztor, G., Pater, J. R., Patrick, G. N., Patt, J., Perez-Ochoa, R., Petzold, S., Pfeifenschneider, P., Pilcher, J. E., Pinfold, J., Plane, D. E., Poffenberger, P., Polok, J., Przybycień, M., Rembser, C., Rick, H., Robertson, S., Robins, S. A., Rodning, N., Roney, J. M., Roscoe, K., Rossi, A. M., Rozen, Y., Runge, K., Runolfsson, O., Rust, D. R., Sachs, K., Saeki, T., Sahr, O., Sang, W. M., Sarkisyan, E. K. G., Sbarra, C., Schaile, A. D., Schaile, O., Scharf, F., Scharff-Hansen, P., Schieck, J., Schmitt, B., Schmitt, S., Schöning, A., Schröder, M., Schumacher, M., Schwick, C., Scott, W. G., Seuster, R., Shears, T. G., Shen, B. C., Shepherd-Themistocleous, C. H., Sherwood, P., Siroli, G. P., Sittler, A., Skuja, A., Smith, A. M., Snow, G. A., Sobie, R., Söldner-Rembold, S., Spagnolo, S., Sproston, M., Stahl, A., Stephens, K., Steuerer, J., Stoll, K., Strom, D., Ströhmer, R., Surrow, B., Talbot, S. D., Tanaka, S., Taras, P., Tarem, S., Teuscher, R., Thiergen, M., Thomas, J., Thomson, M. A., Törne, E., Torrence, E., Towers, S., Trigger, I., Trócsányi, Z., Tsur, E., Turcot, A. S., Turner-Watson, M. F., Ueda, I., Kooten, R., Vannerem, P., Verzocchi, M., Voss, H., Wäckerle, F., Wagner, A., Ward, C. P., Ward, D. R., Watkins, P. M., Watson, A. T., Watson, N. K., Wells, P. S., Wermes, N., White, J. S., Wilson, G. W., Wilson, J. A., Wyatt, T. R., Yamashita, S., Yekutieli, G., Zacek, V., and Zer-Zion, D.

208. Measurements of the b quark forward-backward asymmetry around the Z(0) peak using jet charge and vertex charge

Author: B. C. Shen, M. Boutemeur, F. S. Merritt, U. Ruppel, M. R. Ingram, Tara Shears, Siegfried Bethke, A. K. Honma, B. Nijjhar, P. A. Hart, W. G. Scott, I. Nakamura, P. Gagnon, J. Bechtluft, J. A. McKenna, M. J. Pearce, A. Sittler, D. Glenzinski, Dezso Horvath, S. Robertson, Gregor Herten, G. W. Wilson, M. Hauschild, S. A. Wotton, C. Markus, Dave Charlton, B. Wilkens, S. Yamashita, M. Schumacher, E. Lefebvre, J. E. Pilcher, M. J. Losty, Jean-Arcady Meyer, G. T. Jones, E. H. Vokurka, Claire Shepherd-Themistocleous, F. Odorici, P. Igo-Kemenes, Otmar Biebel, H. M. Bosch, W. Mohr, K. Ametewee, A. Posthaus, Gideon Alexander, Paolo Capiluppi, J. Lauber, R. Bartoldus, Stefan Schmitt, R. Lahmann, D. C. Imrie, K. Ishii, H. Jeremie, R. E. Hughes-Jones, G. Yekutieli, R. Bürgin, M. Fanti, R. W. Springer, P. G. Estabrooks, N. J. Oldershaw, H. O. Ogren, Christoph Geich-Gimbel, T. J. Smith, R. K. Keeler, U. Müller, A. J. Martin, A. A. Carter, Ron Folman, G. P. Siroli, J. Letts, S. D. Talbot, Sachio Komamiya, N. K. Watson, D. L. Rees, A. A. Faust, Roger Jones, J. E. Conboy, D. Chrisman, G. D. Long, Volker Blobel, K. Stephens, P. Mättig, P. S. Wells, H. Mes, Shoji Asai, Norbert Wermes, Theodoros Geralis, Sherry Towers, T. Behnke, T. Kawamoto, Abish Malik, D. Eatough, C. Hartmann, D. E. Plane, O. Schaile, F. Scharf, E. do Couto e Silva, I. P. Duerdoth, Terry Richard Wyatt, Stephen Lloyd, P. M. Watkins, Georges Azuelos, E. Tsur, German Martinez, Stefan Kluth, J. E. Bloomer, Gideon Bella, Daniel Lellouch, F. X. Gentit, U. Jost, R. Mir, P. Fath, Takehiko Mori, Shlomit Tarem, S. Orito, E. Ros, A. T. Watson, Robert M Brown, M. Rosvick, V. Gibson, R. Hawkings, Paolo Giacomelli, M. Verzocchi, K. W. Bell, K. Sachs, J. Pálinkás, S. R. Lautenschlager, P. Utzat, M. Hansroul, Shlomo Dado, A. Macchiolo, A. Fürtjes, W. Matthews, Stephen Hillier, C. K. Hargrove, G. M. Dallavalle, Matthias Schröder, J. C. Hill, Misao Sasaki, A. Macpherson, H. J. Burckhart, H. A. Neal, Jacqueline Batley, M. Gruwé, C. M. Hawkes, M. Hapke, V. Zacek, T. R. Junk, M. A. Thomson, Robert McPherson, Silvia Arcelli, D. E. Hutchcroft, I. Trigger, Sven Menke, E. K. U. Gross, S. D. Bird, Richard Nisius, P. Schenk, N. I. Geddes, T. Hilse, M. Thiergen, H. Lafoux, C. Y. Chang, Michael Hildreth, T. P. Kokott, D. R. Ward, T. Kress, I. J. Bloodworth, T. Omori, A. Gaidot, Mathieu Doucet, R. D. Heuer, M. J. Oreglia, M. Sproston, Gunter Wolf, Giora Mikenberg, Fabrizio Fabbri, D. Axen, R. Howard, Marco Cuffiani, C. Burgard, J. S. White, A. Jawahery, T. J. McMahon, O. Runolfsson, E. A. Mckigney, W. R. Gibson, Peter Sherwood, K. Ackerstaff, N. L. Rodning, Yoram Rozen, B. Stockhausen, Paul Kyberd, R. K. Carnegie, Ehud Duchovni, F. K. Loebinger, B. T. Bouwens, M. Jimack, M. Foucher, P. Taras, K. Nagai, A. Michelini, J. R. Carter, B. Poli, S. Braibant, D. R. Rust, A. D. Schaile, G. N. Patrick, Gabriella Pasztor, W. P. Lai, R. J. Homer, Alexander Wagner, F. G. Oakham, B. Schmitt, C. R. Jones, J. Steuerer, E. L. Barberio, J. Ludwig, Kiyotomo Kawagoe, Michael Kobel, K. Runge, P. Bock, C. Beeston, D. Karlen, A. Biguzzi, A. Rooke, M. Herndon, M. Bobinski, J. A. Wilson, Lorne Levinson, Claudio Grandi, D. M. Strom, G. A. Snow, C. P. Ward, A. M. Lee, J. M. Roney, Joleen Pater, J. G. Layter, Ekg Sarkisyan, E. von Törne, C. Dallapiccola, J. Grunhaus, R. Giacomelli, Satoshi Tanaka, T. Kobayashi, P. W. Jeffreys, A. Skillman, S. Söldner-Rembold, R. Rylko, H. M. Fischer, D. Lazic, A. I. McNab, J. Goldberg, P. Pfeifenschneider, N. Altekamp, Reda Tafirout, Klaus Kurt Desch, Julie Kirk, R. Van Kooten, B. Nellen, P. E.L. Clarke, J. Patt, M. K. Jones, R. J. Barlow, D. J. Miller, J. J. Ward, John Allison, J. P. Martin, F. Wäckerle, O. C. Cooke, H. G. Evans, D. M. Gingrich, P. Vikas, D. Lanske, S. A. Robins, M. J. Goodrick, I. Cohen, S. De Jong, P. Berlich, D. Rigby, R. J. Hemingway, Achim Stahl, R. G. Kellogg, M. Steiert, M. F. Turner-Watson, M. Morii, Peter R Hobson, B. W. Kennedy, P. Jovanovic, Austin Ball, J. von Krogh, Csaba Hajdu, D. Zer-Zion, P. Routenburg, Peter Krieger, Manuella Vincter, Alessandro Montanari, S. W. O'Neale, Stefano Marcellini, K. J. Anderson, M. Fierro, J. E.G. Edwards, H. Przysiezniak, L. A. del Pozo, S. M. Gascon-Shotkin, P. Poffenberger, A. Joly, P. Schütz, A. N. Bell, C. Sbarra, Matthew Evans, A. M. Rossi, T. Tsukamoto, G. G. Hanson, P. Scharff-Hansen, G. Giacomelli, Hans-Christian Schultz-Coulon, Randall Sobie, Michael Schulz, G. D. Lafferty, M. S. Dixit, Frans Meijers, A. M. Smith, G. Vasseur, Guenter Duckeck, Andris Skuja, S. Petzold, Tetsuro Mashimo, W. Gorn, James Pinfold, D. G. Fong, C. Lewis, A. S. Turcot, F. Fiedler, J. Gascon, J. W. Gary, D. S. Koetke, Marcello Mannelli, M. Kolrep, S. B. Anderson, P. Szymanski, Stan Bentvelsen, and W. J. McDonald
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), media_common.quotation_subject, Hadron, Forward backward, Thrust, Bottom quark, Asymmetry, Vertex (geometry), Nuclear physics, Particle Physics - Experiment, media_common, Lepton
Abstract: The b quark forward-backward asymmetry has been measured using approximately four million hadronic Z(0) decays collected with the OPAL detector at LEP. Both jet charge and vertex charge were used to estimate whether the b quark was produced in the forward or backward thrust hemisphere. The measured values corrected to the hadron-level thrust axis areA(FB)(b) = 0.041 +/-0.021 +/-0.002 root s = 89.34 GeVA(FB)(b) = 0.0994 +/-0.0052 +/-0.0044 root s = 91.21 GeVA(FB)(b) = 0.145 +/-0.017 +/-0.007 root s = 92.91 GeVwhere in each case the first error is statistical and the second systematic. Within the framework of the Standard Model these measurements correspond to an effective weak mixing angle of sin(2) theta(W)(eff,e) = 0.2308 +/- 0.0013. The measurements are in agreement with the Standard Model and other measurements at LEP.

209. IMPROVED MEASUREMENTS OF THE B-0 AND B+ MESON LIFETIMES

Author: Silvia Arcelli, Sachio Komamiya, Theodoros Geralis, R. Bartoldus, T. J. Smith, O. Tousignant, A. T. Watson, S. W. O'Neale, C. Y. Chang, K. J. Anderson, P. Taras, Michael Kobel, Julie Kirk, G. G. Hanson, H. O. Ogren, Christoph Geich-Gimbel, K. Stephens, H. Mes, T. P. Kokott, A. Luig, G. Giacomelli, I. P. Duerdoth, T. Hilse, R. W. Springer, P. Schenk, A. I. McNab, P. Poffenberger, Peter Fischer, P. Fath, P. Schütz, Dave Charlton, W. P. Lai, J. M. Roney, Tohru Takeshita, Otmar Biebel, Claudio Grandi, M. Yurko, R. W. L. Jones, P. W. Jeffreys, P. Scharff-Hansen, W. R. Gibson, G. D. Lafferty, J. Goldberg, B. Nellen, Madjid Boutemeur, P. S. Wells, Georges Azuelos, Barry King, C. M. Hawkes, M. S. Dixit, P. Gagnon, F. X. Gentit, Margret Fincke-Keeler, J. E. Conboy, A. Fürtjes, R. Bürgin, B. Fabbro, R. Van Kooten, Frans Meijers, T. J. McMahon, A. Beck, D. L. Wagner, K. W. Bell, R. Kowalewski, E. Lefebvre, E. Heflin, P. G. Estabrooks, R. K. Keeler, C.J. Beeston, J. G. Layter, Gregor Herten, T. G. Shears, J. Allison, P. Leblanc, P. Bright-Thomas, F. Odorici, S. Braibant, J. C. Hill, Misao Sasaki, K. Ametewee, D. R. Ward, J. Schwiening, A. M. Smith, A. M. Rossi, T. Kress, D. M. Gingrich, Gideon Alexander, R. K. Carnegie, F. S. Merritt, D. Rigby, R. J. Hemingway, J. Steuerer, B. C. Shen, Lorne Levinson, P. M. Watkins, P. Berlich, J. J. Ward, Siegfried Bethke, Paolo Capiluppi, P. Vikas, M. A. Thomson, A. K. Honma, W. G. Scott, G. Vasseur, H. M. Fischer, C. Darling, P. D. Phillips, Kiyotomo Kawagoe, C. Charlesworth, B. W. Kennedy, H. G. Evans, M. Fanti, A. Michelini, Gideon Bella, G. T. Zorn, J. A. Wilson, Gilles Beaudoin, P. Igo-Kemenes, H. Deng, Fabrizio Fabbri, J. Letts, A. Skillman, P. E.L. Clarke, H. J. Burckhart, D. R. Rust, Jacqueline Batley, Norbert Wermes, P. Jovanovic, B. Lorazo, Andris Skuja, M. J. Goodrick, I. Cohen, Austin Ball, Peter Krieger, Manuella Vincter, Alessandro Montanari, U. C. Dunwoody, M. K. Jones, Ehud Duchovni, Sherry Towers, H. Jeremie, T. Kawamoto, A. D. Schaile, A. S. Turcot, T. R. Wyatt, M. Jimack, J. P. Martin, R. Mir, R. E. Hughes-Jones, G. D. Long, Tetsuro Mashimo, J. A. McKenna, H. M. Bosch, A. M. Lee, U. Maur, S. Orito, M. Tscheulin, S. A. Robins, R. J. Barlow, Wolfram Dietrich Zeuner, P. Weber, F. Palmonari, S. De Jong, M. Rosvick, G. A. Snow, C. P. Ward, S. G. Clowes, D. Hochman, B. Wilkens, M. Fierro, J. E.G. Edwards, S. W. Gensler, D. E. Plane, V. Gibson, H. Takeda, R. D. Heuer, D. L. Rees, W. Gorn, P. Mättig, S. J. Hillier, R. Howard, G. M. Dallavalle, M. J. Oreglia, S. Söldner-Rembold, J. R. Carter, H. Przysiezniak, B. Stockhausen, Paul Kyberd, Claude Leroy, M. J. Losty, F. K. Loebinger, Shoji Asai, T. Kobayashi, Erez Etzion, F. G. Oakham, E. L. Barberio, E. do Couto e Silva, J. P. Pansart, Marco Cuffiani, J. E. Pilcher, O. C. Cooke, V. H. Winterer, David Robinson, G. N. Patrick, O. Runolfsson, Stefan Kluth, M. W. Redmond, Shlomit Tarem, C. Dallapiccola, S. L. Chu, J. D. Gillies, R. Giacomelli, R. Lahmann, D. C. Imrie, J. C. Clayton, A. Buijs, G. W. Wilson, M. Hauschild, D. M. Strom, C. Stegmann, James Pinfold, N. I. Geddes, C. J. Oram, Eduardo Ros, Shlomo Dado, J.A. Lauber, G. P. Siroli, J. King, H. Fukui, T. Behnke, C. Markus, Reda Tafirout, Christoph Schwick, D. J. Miller, D. G. Fong, N. Capdevielle, J. von Krogh, R. G. Kellogg, J. Gascon, X. C. Lou, Stefano Marcellini, Daniel Lellouch, R. P. Middleton, N. J. Oldershaw, N. L. Rodning, D. Axen, Hans-Christian Schultz-Coulon, R.J. Akers, A. Jawahery, Gunter Wolf, Giora Mikenberg, Stephen Lloyd, Randall Sobie, G. A. Beck, L. A. del Pozo, M. Tecchio, Robert M Brown, C. Sbarra, Peter Sherwood, Achim Stahl, O. Schaile, J. W. Gary, D. S. Koetke, Alexander Wagner, J. Hagemann, Marcello Mannelli, J. E. Duboscq, Takehiko Mori, J. Ludwig, K. Runge, P. Bock, Michael Dittmar, Michael Schulz, G. Yekutieli, P. Teixeira-Dias, B. Poli, S. Wotton, A. A. Carter, M. Starks, Ron Folman, A. J. Martin, P. Utzat, M. G. Rison, B. Schmitt, T. W. Pritchard, V. Zacek, A. Yeaman, G. Duckeck, M. F. Turner-Watson, M. Morii, Peter R Hobson, I. J. Bloodworth, P. Routenburg, P. Szymanski, Paolo Giacomelli, M. Hansroul, M. Settles, Yoram Rozen, M. Foucher, C. H. Shepherd-Themistocleous, C. Jui, R. J. Homer, Stan Bentvelsen, Junichi Kanzaki, D. Karlen, C. Burgard, Matthias Schröder, H. Lafoux, N. K. Watson, W. Mohr, A. Posthaus, P. A. Elcombe, F. Scharf, U. Müller, W. Matthews, E. K. U. Gross, A. Gaidot, T. Wlodek, M. Sproston, T. Tsukamoto, N. Tesch, C. K. Hargrove, P. A. Hart, B. Nijjhar, and M. J. Pearce
Subjects: Nuclear physics, Physics, Decay time, Particle physics, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Hadron, B meson, Elementary particle, Engineering (miscellaneous), Particle Physics - Experiment
Abstract: Updated measurements of the B0 and B+ meson lifetimes are presented. From a data sample of 1.72 million hadronic Z0 decays recorded during the period 1991 to 1993, a sample of approximately 1000 semileptonic B meson decays containing a D0, D+ or D*+ has been isolated. From the distribution of decay times in the different samples the lifetimes of the B0 and B+ mesons are determined to be 1.53±0.12±0.08 ps and 1.52±0.14±0.09 ps, respectively, where the first error is statistical and the second systematic. The ratio of the B+ to B0 lifetimes is measured to be 0.99±0.14−0.04+0.05, confirming expectations that the lifetimes are similar.

210. A study of four-fermion final states with high multiplicity at LEP

Author: E. Lefebvre, J. Palinkas, Shlomo Dado, F. Odorici, Giora Mikenberg, Daniel Lellouch, Takehiko Mori, Dave Charlton, Silvia Arcelli, R. Bürgin, V. Zacek, S. Yamashita, P. Igo-Kemenes, W. Matthews, H. Jeremie, R. E. Hughes-Jones, G. Giacomelli, V. Gibson, E. do Couto e Silva, P. Weber, H. Mes, Sven Menke, I. P. Duerdoth, P. Fath, M. A. Thomson, N. I. Geddes, Otmar Biebel, R. Lahmann, D. C. Imrie, M. Palazzo, E. A. Mckigney, I. J. Bloodworth, G. P. Siroli, Michael Hildreth, J. King, A. Gaidot, N. L. Rodning, Hans-Christian Schultz-Coulon, Randall Sobie, R. W. Springer, W. P. Lai, B. Poli, Michael Schulz, S. Braibant, Gabriella Pasztor, Gunter Wolf, G. A. Snow, C. P. Ward, D. Axen, A. Jawahery, S. Söldner-Rembold, Gideon Bella, R. Kowalewski, T. Wlodek, M. Sproston, Yoram Rozen, M. Foucher, Peter Sherwood, Junichi Kanzaki, C. H. Shepherd-Themistocleous, D. Karlen, C. Burgard, Alexander Wagner, J. Ludwig, K. Runge, J. M. Roney, H. J. Burckhart, Jacqueline Batley, H. M. Fischer, A. Michelini, P. Bock, J. Letts, K. Stephens, Reda Tafirout, T. Hilse, Norbert Wermes, Sherry Towers, T. Kawamoto, C. Darling, T. J. Smith, S. A. Robins, T. Omori, N. Tesch, P. Gagnon, S. Orito, M. Rosvick, Georges Azuelos, S. Wotton, J. Allison, G. D. Lafferty, P. Mättig, Shoji Asai, E. Tsur, Guenter Duckeck, M. Hapke, O. Runolfsson, A. Sittler, A. Joly, C. M. Hawkes, M. Verzocchi, J. R. Carter, H. M. Bosch, K. W. Bell, M. J. Oreglia, A. I. McNab, J. Lauber, J. Goldberg, S. M. Gascon-Shotkin, R. Bartoldus, H. O. Ogren, Madjid Boutemeur, N. K. Watson, Christoph Geich-Gimbel, J. C. Hill, Misao Sasaki, G. N. Patrick, B. Nellen, F. Strumia, Claudio Grandi, W. J. McDonald, B. C. Shen, A. S. Turcot, K. Ametewee, Matthew Evans, A. M. Rossi, P. G. Estabrooks, F. X. Gentit, Siegfried Bethke, C. Y. Chang, A. K. Honma, W. G. Scott, H. G. Evans, J. E. Conboy, A. Fürtjes, M. J. Goodrick, W. Mohr, I. Cohen, C. Hartmann, D. E. Plane, Stephen Hillier, A. Posthaus, P. M. Watkins, D. J. Miller, Gideon Alexander, G. M. Dallavalle, F. S. Merritt, T. R. Wyatt, Paolo Capiluppi, Dezso Horvath, M. J. Losty, Jean-Arcady Meyer, S. B. Anderson, Koji Yoshimura, R. J. Barlow, Alan Watson, P. Szymanski, Stefan Kluth, P. Taras, Shlomit Tarem, M. Fierro, J. E.G. Edwards, Ekg Sarkisyan, D. L. Rees, Michael Kobel, P. W. Jeffreys, F. Scharf, German Martinez, W. R. Gibson, J. Bechtluft, B. T. Bouwens, M. F. Turner-Watson, J. A. McKenna, A. D. Schaile, M. Morii, Stan Bentvelsen, R. G. Kellogg, D. Chrisman, Peter R Hobson, Volker Blobel, Csaba Hajdu, J. J. Ward, P. Vikas, Lorne Levinson, Julie Kirk, Stefano Marcellini, D. Lanske, Gilles Beaudoin, A. Skillman, J. W. Gery, Stephen Lloyd, Robert M Brown, D. R. Ward, B. Stockhausen, Paul Kyberd, P. Routenburg, F. K. Loebinger, T. Kress, J. Steuerer, Ehud Duchovni, Joleen Pater, Sachio Komamiya, M. Jimack, Theodoros Geralis, E. Ros, R. Giacomelli, S. W. Gensler, T. Kobayashi, S. W. O'Neale, K. J. Anderson, P. Poffenberger, T. P. Kokott, A. Luig, P. Schütz, P. S. Wells, Gregor Herten, J. E. Bloomer, B. Wilkens, Frank Fiedler, Paolo Giacomelli, J. E. Pilcher, M. Hansroul, M. R. Ingram, D. M. Strom, H. Fukui, R. Rylko, O. Schaile, M. Starks, James Pinfold, G. W. Wilson, M. Hauschild, D. G. Fong, C. Lewis, C. Markus, G. T. Jones, J. Gascon, E. H. Vokurka, Richard Keeler, R. J. Homer, R. Howard, J. S. White, J. P. Pansart, A. Malik, Mathieu Doucet, D. S. Koetke, Marcello Mannelli, C. Sbarra, R. D. Heuer, P. Scharff-Hansen, Fabrizio Fabbri, Achim Stahl, G. Yekutieli, A. M. Smith, A. A. Carter, G. Vasseur, P. E.L. Clarke, B. Lorazo, M. K. Jones, J. P. Martin, Ron Folman, Roger Jones, R. Van Kooten, M. Tscheulin, Andris Skuja, S. Petzold, G. D. Long, S. De Jong, Tetsuro Mashimo, P. Utzat, D. E. Hutchcroft, C. Dallapiccola, H. Przysiezniak, M. G. Rison, A. N. Bell, U. Müller, T. J. McMahon, W. Gorn, J. Schwiening, R. K. Carnegie, A. J. Martin, J. A. Wilson, A. Rooke, J. G. Layter, C.J. Beeston, B. Schmitt, N. Altekamp, C. Charlesworth, O. C. Cooke, Stefania Xella, J. von Krogh, G. G. Hanson, C. K. Hargrove, F. Wäckerle, R. J. Hawkings, Matthias Schröder, M. Thiergen, H. Lafoux, L. A. del Pozo, P. Schenk, M. S. Dixit, Frans Meijers, D. M. Gingrich, Tara Shears, P. A. Hart, B. Nijjhar, M. J. Pearce, D. Rigby, R. J. Hemingway, B. W. Kennedy, P. Berlich, P. Jovanovic, Austin Ball, Peter Krieger, D. R. Rust, S. L. Chu, Manuella Vincter, Alessandro Montanari, A. M. Lee, U. Jost, R. Mir, M. Tecchio, E. von Törne, H. Takeda, F. G. Oakham, E. L. Barberio, T. Behnke, Eilam Gross, M. Gruwé, Richard Nisius, and Marco Cuffiani
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Monte Carlo method, High Energy Physics::Experiment, Fermion, High multiplicity, Atomic physics, Resonance (particle physics), Particle Physics - Experiment, Lepton, Standard Model
Abstract: A search for l + l − q q (l = e, μ) four-fermion final states in high multiplicity events has been performed at s ≈m Z and above the Z peak at s =130 GeV and s =136 GeV. The data taken with OPAL correspond to an integrated luminosity of 132.4 pb−1 and 5.3 pb−1 at s ≈m Z and s =130−136 GeV, respectively. While at the Z resonance the data are in good agreement with the Standard Model predictions, we find more events than expected at s =130−136 GeV, especially in the μ + μ − q q channel, where 5 events remain after all cuts, with only 0.6 predicted by the Monte Carlo simulation. For all center-of-mass energies the observed shapes of the differential distributions are consistent with the predictions.

211. Possibility of single-atom detection on a chip

Author: Jörg Schmiedmayer, E. A. Hinds, Peter Horak, Albrecht Haase, Ron Folman, Peter Domokos, and B.G. Klappauf
Subjects: Condensed Matter::Quantum Gases, Physics, Optical fiber, business.industry, Physics::Optics, Photodetector, Trapping, Atomic and Molecular Physics, and Optics, law.invention, Trap (computing), Finesse, Radiation pressure, law, Atom, Physics::Atomic and Molecular Clusters, Optoelectronics, Spontaneous emission, Physics::Atomic Physics, Atomic physics, business
Abstract: We investigate the optical detection of single atoms held in a microscopic atom trap close to a surface. Laser light is guided by optical fibers or optical microstructures via the atom to a photodetector. Our results suggest that with present-day technology microcavities can be built around the atom with sufficiently high finesse to permit unambiguous detection of a single atom in the trap with 10 µs of integration. We compare resonant and nonresonant detection schemes and discuss the requirements for detecting an atom without causing it to undergo spontaneous emission.

212. SEARCH FOR NEUTRAL HIGGS BOSONS IN THE MINIMAL SUPERSYMMETRIC EXTENSION OF THE STANDARD MODEL

Author: Antonio Rossi, P. Bright-Thomas, J. J. Ward, T. Hilse, O. Runolfsson, C. Beeston, H. Przysiezniak, S. G. Clowes, M. Fierro, Claudio Grandi, S. L. Chu, Andris Skuja, Claire Shepherd-Themistocleous, G. D. Long, Tetsuro Mashimo, O. Ganel, P. Igo-Kemenes, G. Beaudoin, W. Gorn, H. Jeremie, R. E. Hughes-Jones, U. Maur, R. Mir, J. Steuerer, R. Lahmann, A. Höcker, P. Scharff-Hansen, B. Stockhausen, Paul Kyberd, F. K. Loebinger, D. C. Imrie, Shlomo Dado, J. Lauber, E. do Couto e Silva, A. M. Smith, H. Takeda, J. King, G. Vasseur, B. Lorazo, F. G. Oakham, Christoph Schwick, H. Mes, E. L. Barberio, Otmar Biebel, James Pinfold, I. P. Duerdoth, Marco Cuffiani, D. G. Charlton, D. L. Wagner, D. G. Fong, Giora Mikenberg, J. Gascon, H. von der Schmitt, Tohru Takeshita, Kiyotomo Kawagoe, H. Deng, R. Humbert, P. Gagnon, Richard G Kellogg, D. Rigby, R. J. Hemingway, Tara Shears, Georges Azuelos, S. Braibant, J. W. Gary, R. Giacomelli, Madjid Boutemeur, Marcello Mannelli, J. E. Duboscq, R. Ströhmer, Barry King, H. M. Fischer, P. Le Du, B. Fabbro, B. W. Kennedy, P. Weber, P. A. Hart, Norbert Wermes, Sherry Towers, P. S. Wells, G. Giacomelli, P. Jovanovic, G. T. Zorn, Austin Ball, T. Kawamoto, Gideon Bella, A. Michelini, P. G. Estabrooks, S. Orito, J. C. Hill, H. J. Burckhart, Jacqueline Batley, Terry Richard Wyatt, Peter Krieger, M. J. Pearce, Misao Sasaki, G. A. Snow, C. P. Ward, M. Rosvick, D. L. Rees, E. Lefebvre, B. C. Shen, H. M. Bosch, Wolfram Dietrich Zeuner, Manuella Vincter, Alessandro Montanari, M. Coupland, F. Odorici, Siegfried Bethke, P. M. Watkins, A. K. Honma, B. Nijjhar, J. Hart, C. Dallapiccola, N. K. Watson, S. A. Robins, W. G. Scott, T. Kobayashi, Xinchou Lou, J. D. Gillies, M. J. Oreglia, R. Kowalewski, John Allison, D. Axen, Richard Keeler, R. Bartoldus, A. Astbury, Silvia Arcelli, Gunter Wolf, F. X. Gentit, H. O. Ogren, M. Fanti, U. Müller, Peter Sherwood, R. Howard, M. J. Losty, A. J. Martin, Gaetano-Marco Dallavalle, J. R. Carter, G. N. Patrick, R. J. Barlow, D. J. Miller, R. W. Springer, Alexander Wagner, R.J. Akers, Ken W Bell, Claude Leroy, Christoph Geich-Gimbel, J. Hagemann, J. Ludwig, Stephen Lloyd, K. Runge, P. Bock, M. Tecchio, Robert M Brown, S. Wotton, N. I. Geddes, Gian Piero Siroli, R. D. Heuer, Fabrizio Fabbri, Ehud Duchovni, D. Van den plas, C. K. Hargrove, A. Buijs, D. M. Strom, Matthias Schröder, C. Stegmann, J. M. Roney, P. Szymanski, B. Poli, H. Fukui, D. R. Rust, W. Mohr, D. A. Hinshaw, O. Schaile, J. Goldberg, B. Nellen, A. Jawahery, D. E. Plane, P. Leblanc, P. Bentkowski, M. Jimack, H. Ihssen, D. S. Koetke, A. M. Lee, A. Posthaus, Stefano Marcellini, H. G. Evans, M. J. Goodrick, C. Jui, I. Cohen, S. W. Gensler, S. J. Hillier, Stan Bentvelsen, Erez Etzion, James Letts, Stefan Kluth, Shlomit Tarem, P. A. Elcombe, R. Van Kooten, D. Pitman, S. Rossberg, Alan Watson, C. J. Oram, J. E. Conboy, A. Fürtjes, M. H. Lehto, R. P. Middleton, T. Behnke, D. M. Gingrich, P. Berlich, Z. Li, W. R. Gibson, Gregor Herten, A. Beck, E. Heflin, B. Wilkens, J. Mildenberger, Harold Nguyen, Lorne Levinson, V. H. Winterer, I. J. Bloodworth, P. D. Phillips, Gordon H. Hanson, J. P. Pansart, F. S. Merritt, J. Becker, J. E. Pilcher, M. Settles, M. F. Turner-Watson, F. Scharf, M. Morii, Peter R Hobson, Yoram Rozen, Hans-Christian Schultz-Coulon, M. Hauschild, Randall Sobie, E. Torrente, Michael Schulz, G. D. Lafferty, C. Markus, M. Foucher, A. D. Schaile, Gideon Alexander, P. Routenburg, T. W. Pritchard, M. W. Redmond, Paolo Capiluppi, G. W. Wilson, Sachio Komamiya, D. Karlen, Theodoros Geralis, E. Ros, A. Skillman, Guenter Duckeck, M. A. Thomson, C. Burgard, E. K. U. Gross, J. A. McKenna, T. Wlodek, T. P. Kokott, A. Luig, M. Sproston, C. Darling, T. J. Smith, T. Tsukamoto, P. Mättig, Shoji Asai, N. Tesch, C. M. Hawkes, Daniel Lellouch, Takehiko Mori, J. R. McNab, A. Yeaman, P. D. Grannis, D. Hochman, K. Stephens, J. R. McNutt, V. Gibson, D. R. Ward, J. C. Clayton, Paolo Giacomelli, M. Hansroul, P. E.L. Clarke, R. J. Homer, U. C. Dunwoody, M. K. Jones, J. P. Martin, S. De Jong, C. Moisan, G. A. Beck, Achim Stahl, P. Teixeira-Dias, F. Liu, B. Schmitt, S. W. O'Neale, K. J. Anderson, P. Schenk, J. von Krogh, Margret Fincke-Keeler, C. Y. Chang, Dave Robinson, M. S. Dixit, Frans Meijers, T. J. McMahon, Michael Kobel, J. Schwiening, R. K. Carnegie, J. A. Wilson, H. Lafoux, J. G. Layter, C. Charlesworth, P. Poffenberger, C. Sbarra, Peter Fischer, P. Schütz, P. Pfister, Michael Dittmar, G. Yekutieli, A. Gaidot, A. A. Carter, Ron Folman, Roger Jones, M. G. Rison, M. Yurko, and P. W. Jeffreys
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Elementary particle, Context (language use), Parameter space, Standard Model, symbols.namesake, symbols, Higgs boson, High Energy Physics::Experiment, Quantum field theory, Engineering (miscellaneous), Higgs mechanism, Particle Physics - Experiment, Boson
Abstract: A search for the neutral Higgs bosons h0 and A0, predicted by the Minimal Supersymmetric Extension of the Standard Model (MSSM), has been performed by the OPAL Collaboration at LEP. The analysis was based on approximately 75 pb−1 of data taken at centre-of-mass energies in the vicinity of the Z0 resonance. No Higgs boson signals have been detected. Using, in addition, an upper limit on the contribution of non-Standard Model processes to the Z0 boson width, almost the entire MSSM parameter space that can be reached at present LEP energies has been excluded. In particular, at the 95% confidence level, our results imply that$m_{h^0 } > 44.5$ GeV/c2 and$m_{A^0 } > 24.3$ GeV/c2, for tan β≥1. The sensitivity to this assumption is discussed and the search results are also interpreted in the context of general two-doublet models.

213. MEASUREMENT OF THE LONGITUDINAL, TRANSVERSE AND ASYMMETRY FRAGMENTATION FUNCTIONS AT LEP

Author: D. R. Ward, T. Kress, Frank Fiedler, D. Hochman, R. Van Kooten, J. C. Clayton, Tara Shears, R. Bartoldus, R. Mir, J. Steuerer, U. C. Dunwoody, W. Matthews, Otmar Biebel, P. A. Hart, D. L. Wagner, B. Nijjhar, M. J. Pearce, I. J. Bloodworth, C.J. Beeston, M. A. Thomson, A. Gaidot, Gideon Bella, E. Lefebvre, T. Wlodek, B. Stockhausen, Paul Kyberd, F. K. Loebinger, S. W. O'Neale, J. Lauber, K. J. Anderson, H. Deng, Margret Fincke-Keeler, F. Wäckerle, M. Sproston, W. R. Gibson, F. Odorici, H. O. Ogren, Christoph Geich-Gimbel, D. Axen, H. J. Burckhart, R. W. Springer, Eilam Gross, Andris Skuja, A. I. McNab, J. Goldberg, D. M. Gingrich, R. Lahmann, N. J. Oldershaw, C. Sbarra, R.J. Akers, M. Settles, P. Poffenberger, Yoram Rozen, J. Letts, F. G. Oakham, Jacqueline Batley, D. C. Imrie, T. Tsukamoto, P. Igo-Kemenes, N. Tesch, R. Giacomelli, Matthias Schröder, Norbert Wermes, Sherry Towers, P. Schütz, E. L. Barberio, T. Kawamoto, B. Nellen, M. Foucher, P. Berlich, A. Buijs, D. M. Strom, C. Stegmann, G. D. Long, A. Beck, F. X. Gentit, H. Jeremie, T. Hilse, R. E. Hughes-Jones, A. Jawahery, O. Schaile, J. E. Conboy, Peter Sherwood, Sachio Komamiya, D. E. Hutchcroft, A. Fürtjes, Theodoros Geralis, E. Ros, S. Orito, D. R. Rust, Tetsuro Mashimo, K. Ametewee, H. Mes, M. Rosvick, C. Dallapiccola, Junichi Kanzaki, Georges Azuelos, C. Y. Chang, O. Runolfsson, P. Fath, Alexander Wagner, G. P. Siroli, J. D. Gillies, M. Hapke, Gideon Alexander, J. Ludwig, J. King, H. Fukui, Marco Cuffiani, D. Karlen, Paolo Capiluppi, C. Burgard, P. Taras, Lorne Levinson, V. Gibson, M. Starks, K. W. Bell, Michael Kobel, T. P. Kokott, A. J. Martin, A. M. Lee, N. Altekamp, F. S. Merritt, K. Runge, A. Luig, U. Müller, P. Bock, M. J. Oreglia, P. D. Phillips, E. von Törne, G. Yekutieli, E. do Couto e Silva, J. C. Hill, Julie Kirk, Misao Sasaki, H. Lafoux, N. I. Geddes, B. C. Shen, S. L. Chu, D. J. Miller, J. Bechtluft, C. Darling, T. J. Smith, Claudio Grandi, Siegfried Bethke, A. K. Honma, Dave Charlton, W. G. Scott, J. A. McKenna, W. Gorn, R. G. Kellogg, H. G. Evans, P. Mättig, R. Bürgin, B. Fabbro, Gilles Beaudoin, Paolo Giacomelli, M. Hansroul, Shoji Asai, M. Fanti, G. N. Patrick, G. Giacomelli, D. Rigby, R. J. Hemingway, C. M. Hawkes, Daniel Lellouch, R. Kowalewski, B. W. Kennedy, Stefano Marcellini, P. S. Wells, P. Jovanovic, Stephen Lloyd, Takehiko Mori, A. Skillman, N. L. Rodning, M. Tecchio, Robert M Brown, M. J. Losty, Sven Menke, C. K. Hargrove, M. J. Goodrick, V. Zacek, Ehud Duchovni, R. D. Heuer, B. Poli, C. H. Shepherd-Themistocleous, Fabrizio Fabbri, M. Jimack, I. Cohen, F. Palmonari, R. J. Homer, Gregor Herten, S. W. Gensler, C. Hartmann, D. E. Plane, T. Behnke, S. J. Hillier, P. Scharff-Hansen, T. R. Wyatt, Richard Keeler, H. M. Fischer, A. Joly, Kiyotomo Kawagoe, G. M. Dallavalle, B. Wilkens, A. Michelini, A. A. Carter, Ron Folman, R. J. Barlow, M. W. Redmond, P. Gagnon, G. A. Beck, Achim Stahl, P. Teixeira-Dias, R. Howard, I. P. Ducrdoth, J. Allison, J. P. Pansart, S. G. Clowes, A. M. Smith, Roger Jones, M. F. Turner-Watson, M. Morii, G. T. Zorn, M. Fierro, J. E.G. Edwards, G. Vasseur, Stefan Kluth, S. A. Robins, Alan Watson, H. M. Bosch, B. Lorazo, Shlomit Tarem, P. W. Jeffreys, Wolfram Dietrich Zeuner, Peter R Hobson, C. J. Oram, J. E. Pilcher, B. Schmitt, James Pinfold, D. G. Fong, P. Routenburg, J. Gascon, P. Bright-Thomas, J. R. Carter, A. Malik, J. W. Gary, D. S. Koetke, Marcello Mannelli, J. E. Duboscq, Gunter Wolf, P. Weber, J. J. Ward, P. Vikas, G. W. Wilson, M. Hauschild, Reda Tafirout, D. Lanske, S. Wotton, Shlomo Dado, C. Markus, B. J. King, Giora Mikenberg, P. Utzat, A. M. Rossi, S. Braibant, M. G. Rison, T. Kobayashi, O. C. Cooke, G. A. Snow, C. P. Ward, S. Söldner-Rembold, Hans-Christian Schultz-Coulon, Randall Sobie, Michael Schulz, T. W. Pritchard, Guenter Duckeck, J. von Krogh, S. B. Anderson, P. Szymanski, Stan Bentvelsen, R. J. Hawkings, L. A. del Pozo, T. J. McMahon, A. S. Turcot, J. Schwiening, R. K. Carnegie, J. A. Wilson, Madjid Boutemeur, P. G. Estabrooks, P. M. Watkins, Silvia Arcelli, E. A. Mckigney, W. P. Lai, Austin Ball, J. M. Roney, Peter Krieger, G. D. Lafferty, Manuella Vincter, Alessandro Montanari, P. E.L. Clarke, M. K. Jones, J. P. Martin, M. Tscheulin, S. De Jong, N. K. Watson, H. Przysiezniak, W. Mohr, A. Posthaus, G. G. Hanson, P. Schenk, D. L. Rees, M. S. Dixit, Frans Meijers, F. Scharf, J. G. Layter, A. D. Schaile, C. Charlesworth, and K. Stephens
Subjects: Physics, Quantum chromodynamics, Particle physics, Physics and Astronomy (miscellaneous), media_common.quotation_subject, High Energy Physics::Phenomenology, Hadron, Fragmentation (computing), Elementary particle, Multiplicity (mathematics), Asymmetry, Charged particle, Gluon, Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), Particle Physics - Experiment, media_common
Abstract: The fragmentation function for the process e+e−→h+X, whereh represents a hadron, may be decomposed into transverse, longitudinal and asymmetric contributions by analysis of the distribution of polar production angles. A number of new tests of QCD have been proposed using these fragmentation functions, but so far no data have been published on the separate components. We have performed such a separation using data on charged particles from hadronic Z0 decays atOpal, and have compared the results with the predictions of QCD. By integrating the fragmentation functions, we determine the average charged particle multiplicity to be$\overline {n_{ch} } = 21.05 \pm 0.20$. The longitudinal to total cross-section ratio is determined to be σL/σtot=0.057±0.005. From the longitudinal fragmentation function we are able to extract the gluon fragmentation function. The connection between the asymmetry fragmentation function and electroweak asymmetrics is discussed.

214. Measurement of the semileptonic branching ratio of charm hadrons produced in Z0 → cc̄ decays

Author: Abbiendi, G., Ackerstaff, K., Alexander, G., Allison, J., Altekamp, N., Anderson, K. J., Anderson, S., Arcelli, S., Asai, S., Ashby, S. F., Axen, D., Azuelos, G., Ball, A. H., Barberio, E., Barlow, R. J., Bartoldus, R., Batley, J. R., Baumann, S., Bechtluft, J., Behnke, T., Bell, K. W., Bella, G., Bellerive, A., Bentvelsen, S., Bethke, S., Betts, S., Biebel, O., Biguzzi, A., Bird, S. D., Blobel, V., Bloodworth, I. J., Bobinski, M., Bock, P., Böhme, J., Bonacorsi, D., Boutemeur, M., Braibant, S., Bright-Thomas, P., Brigliadori, L., Brown, R. M., Burckhart, H. J., Burgard, C., Bürgin, R., Capiluppi, P., Carnegie, R. K., Carter, A. A., Carter, J. R., Chang, C. Y., Charlton, D. G., Chrisman, D., Ciocca, C., Clarke, P. E. L., Clay, E., Cohen, I., Conboy, J. E., Cooke, O. C., Couyoumtzelis, C., Coxe, R. L., Cuffiani, M., Dado, S., Dallavalle, G. M., Davis, R., Jong, S., Del Pozo, L. A., Roeck, A., Desch, K., Dienes, B., Dixit, M. S., Dubbert, J., Duchovni, E., Duckeck, G., Duerdoth, I. P., Eatough, D., Estabrooks, P. G., Etzion, E., Evans, H. G., Fabbri, F., Fanti, M., Faust, A. A., Fiedler, F., Fierro, M., Fleck, I., Ron Folman, Fürtjes, A., Futyan, D. I., Gagnon, P., Gary, J. W., Gascon, J., Gascon-Shotkin, S. M., Gaycken, G., Geich-Gimbel, C., Giacomelli, G., Giacomelli, P., Gibson, V., Gibson, W. R., Gingrich, D. M., Glenzinski, D., Goldberg, J., Gorn, W., Grandi, C., Gross, E., Grunhaus, J., Gruwé, M., Hanson, G. G., Hansroul, M., Hapke, M., Harder, K., Hargrove, C. K., Hartmann, C., Hauschild, M., Hawkes, C. M., Hawkings, R., Hemingway, R. J., Herndon, M., Herten, G., Heuer, R. D., Hildreth, M. D., Hill, J. C., Hillier, S. J., Hobson, P. R., Hocker, A., Homer, R. J., Honma, A. K., Horváth, D., Hossain, K. R., Howard, R., Hüntemeyer, P., Igo-Kemenes, P., Imrie, D. C., Ishii, K., Jacob, F. R., Jawahery, A., Jeremie, H., Jimack, M., Jones, C. R., Jovanovic, P., Junk, T. R., Karlen, D., Kartvelishvili, V., Kawagoe, K., Kawamoto, T., Kayal, P. I., Keeler, R. K., Kellogg, R. G., Kennedy, B. W., Klier, A., Kluth, S., Kobayashi, T., Kobel, M., Koetke, D. S., Kokott, T. P., Kolrep, M., Komamiya, S., Kowalewski, R. V., Kress, T., Krieger, P., Krogh, J., Kuhl, T., Kyberd, P., Lafferty, G. D., Lanske, D., Lauber, J., Lautenschlager, S. R., Lawson, I., Layter, J. G., Lazic, D., Lee, A. M., Lellouch, D., Letts, J., Levinson, L., Liebisch, R., List, B., Littlewood, C., Lloyd, A. W., Lloyd, S. L., Loebinger, F. K., Long, G. D., Losty, M. J., Ludwig, J., Liu, D., Macchiolo, A., Macpherson, A., Mader, W., Mannelli, M., Marcellini, S., Markopoulos, C., Martin, A. J., Martin, J. P., Martinez, G., Mashimo, T., Mättig, P., Mcdonald, W. J., Mckenna, J., Mckigney, E. A., Mcmahon, T. J., Mcpherson, R. A., Meijers, F., Menke, S., Merritt, F. S., Mes, H., Meyer, J., Michelini, A., Mihara, S., Mikenberg, G., Miller, D. J., Mir, R., Mohr, W., Montanari, A., Mori, T., Nagai, K., Nakamura, I., Neal, H. A., Nellen, B., Nisius, R., O Neale, S. W., Oakham, F. G., Odorici, F., Ogren, H. O., Oreglia, M. J., Orito, S., Pálinkás, J., Pásztor, G., Pater, J. R., Patrick, G. N., Patt, J., Perez-Ochoa, R., Petzold, S., Pfeifenschneider, P., Pilcher, J. E., Pinfold, J., Plane, D. E., Poffenberger, P., Polok, J., Przybycień, M., Rembser, C., Rick, H., Robertson, S., Robins, S. A., Rodning, N., Roney, J. M., Roscoe, K., Rossi, A. M., Rozen, Y., Runge, K., Runolfsson, O., Rust, D. R., Sachs, K., Saeki, T., Sahr, O., Sang, W. M., Sarkisyan, E. K. G., Sbarra, C., Schaile, A. D., Schaile, O., Scharf, F., Scharff-Hansen, P., Schieck, J., Schmitt, B., Schmitt, S., Schöning, A., Schröder, M., Schumacher, M., Schwick, C., Scott, W. G., Seuster, R., Shears, T. G., Shen, B. C., Shepherd-Themistocleous, C. H., Sherwood, P., Siroli, G. P., Sittler, A., Skuja, A., Smith, A. M., Snow, G. A., Sobie, R., Söldner-Rembold, S., Sproston, M., Stahl, A., Stephens, K., Steuerer, J., Stoll, K., Strom, D., Ströhmer, R., Surrow, B., Talbot, S. D., Tanaka, S., Taras, P., Tarem, S., Teuscher, R., Thiergen, M., Thomson, M. A., Törne, E., Torrence, E., Towers, S., Trigger, I., Trócsányi, Z., Tsur, E., Turcot, A. S., Turner-Watson, M. F., Kooten, R., Vannerem, P., Verzocchi, M., Voss, H., Wäckerle, F., Wagner, A., Ward, C. P., Ward, D. R., Watkins, P. M., Watson, A. T., Watson, N. K., Wells, P. S., Wermes, N., White, J. S., Wilson, G. W., Wilson, J. A., Wyatt, T. R., Yamashita, S., Yekutieli, G., Zacek, V., and Zer-Zion, D.

215. Measurement of the one-prong hadronic tau branching ratios at LEP

Author: W. R. Gibson, Reda Tafirout, Klaus Kurt Desch, R. M. Brown, Lorne Levinson, A. Skillman, E. Torrence, Silvia Arcelli, Tara Shears, R. Bartoldus, C. Hartmann, D. E. Plane, Stephen Hillier, G. M. Dallavalle, Alan Watson, K. Stoll, H. O. Ogren, Andris Skuja, Christoph Geich-Gimbel, T. Behnke, P. A. Hart, Sachio Komamiya, A. Biguzzi, U. Ruppel, M. R. Ingram, S. Baumann, S. B. Anderson, A. Rooke, J. G. Layter, C. Y. Chang, A. D. Schaile, P. Szymanski, Theodoros Geralis, R. W. Springer, S. Petzold, E. A. Mckigney, H. Mes, A. Macchiolo, S. Yamashita, P. Taras, Tetsuro Mashimo, Dave Charlton, R. Lahmann, D. C. Imrie, Michael Kobel, B. Stockhausen, Paul Kyberd, Gabriella Pasztor, F. K. Loebinger, D. Lui, P. Igo-Kemenes, R. Bürgin, Vakhtang Kartvelishvili, M. Gruwé, C. M. Hawkes, I. P. Duerdoth, S. Braibant, J. Steuerer, Ivor Fleck, W. P. Lai, Stan Bentvelsen, Georges Azuelos, Allen Mincer, U. Müller, G. A. Snow, K. Ishii, H. Jeremie, Julie Kirk, J. E. Conboy, T. P. Kokott, A. Fürtjes, E. Tsur, G. P. Siroli, Richard Nisius, A. J. Martin, Raimund Ströhmer, Gideon Bella, C. P. Ward, Joleen Pater, T. Saeki, A. Klier, W. Gorn, M. Verzocchi, P. E.L. Clarke, M. K. Jones, H. J. Burckhart, Jacqueline Batley, S. Söldner-Rembold, Lutz Feld, R. Giacomelli, Christoph Schwick, M. Fanti, K. W. Bell, J. Pálinkás, J. M. Roney, Marco Cuffiani, S. Betts, M. Hapke, J. P. Martin, P. Poffenberger, Alessandra Fanfani, A. Oh, P. Hüntemeyer, J. C. Hill, D. I. Futyan, C. K. Hargrove, D. E. Hutchcroft, S. De Jong, Hans-Christian Schultz-Coulon, M. Boutemeur, F. S. Merritt, Randall Sobie, G. D. Lafferty, Matthias Schröder, W. J. McDonald, B. C. Shen, J. Letts, M. Thiergen, C. R. Jones, Ehud Duchovni, P. Gagnon, Robert McPherson, S. A. Robins, Kiyotomo Kawagoe, W. M. Sang, Siegfried Bethke, A. K. Honma, S. M. Gascon-Shotkin, W. G. Scott, M. Jimack, M. J. Oreglia, P. Scharff-Hansen, A. Sittler, L. Brigliadori, Peter Schleper, Mathieu Doucet, I. Nakamura, A. Michelini, O. Schaile, Satoshi Mihara, S. R. Lautenschlager, H. A. Neal, R. D. Heuer, Fabrizio Fabbri, J. Bechtluft, J. A. McKenna, Z. Trácsanyi, K. Ackerstaff, K. Sachs, Shlomo Dado, A. N. Bell, Satoshi Tanaka, T. Kobayashi, Claire Shepherd-Themistocleous, J. R. Carter, G. N. Patrick, R. Van Kooten, A. Joly, R. Davis, D. Glenzinski, Otmar Biebel, S. D. Bird, Dezso Horvath, M. J. Losty, S. W. O'Neale, Guenter Duckeck, A. M. Smith, K. J. Anderson, K. R. Hossain, O. Runolfsson, D. Axen, M. F. Turner-Watson, Jean-Arcady Meyer, A. Jawahery, M. Schumacher, Matthew Evans, A. M. Rossi, E. Lefebvre, P. I. Kayal, C. Sbarra, A. A. Faust, Richard Teuscher, C. Beeston, Peter Sherwood, Peter R Hobson, F. Wäckerle, James Pinfold, D. M. Gingrich, Norbert Wermes, Alexander Wagner, Sherry Towers, G. G. Hanson, Daniel Lellouch, Takehiko Mori, R. Perez-Ochoa, Claudio Grandi, K. Stephens, A. S. Turcot, D. G. Fong, F. Fiedler, J. Ludwig, D. Zer-Zion, T. Kawamoto, K. Runge, P. Bock, F. Odorici, P. Mättig, Gideon Alexander, V. Zacek, J. Gascon, Ekg Sarkisyan, P. W. Jeffreys, Paolo Capiluppi, J. Lauber, S. Orito, John Allison, G. Giacomelli, P. Routenburg, R. L. Coxe, I. J. Bloodworth, Sven Menke, N. I. Geddes, Michael Hildreth, T. J. McMahon, A. Hocker, J. W. Gary, K. Nagai, D. Chrisman, G. D. Long, C. Couyoumtzelis, N. L. Rodning, S. D. Talbot, Volker Blobel, M. S. Dixit, R. K. Carnegie, B. Poli, J. Goldberg, Yoram Rozen, M. Foucher, P. Vikas, R. G. Kellogg, Giora Mikenberg, D. Eatough, J. Grunhaus, Stephen Lloyd, M. Herndon, D. Lanske, D. S. Koetke, Marcello Mannelli, B. Nellen, Junichi Kanzaki, O. C. Cooke, Frans Meijers, Csaba Hajdu, S. F. Ashby, P. Pfeifenschneider, M. Bobinski, J. A. Wilson, D. Karlen, D. R. Rust, Stefano Marcellini, H. M. Fischer, J. Patt, Stefan Schmitt, André Schöning, V. Gibson, M. Fierro, J. E.G. Edwards, P. S. Wells, H. G. Evans, Shoji Asai, M. J. Goodrick, Terry Richard Wyatt, I. Cohen, D. Lazic, A. M. Lee, E. von Törne, Christoph Rembser, J. E. Bloomer, T. R. Junk, M. Kolrep, Paolo Giacomelli, M. Hansroul, C. Burgard, Stefan Kluth, R. J. Homer, Shlomit Tarem, I. Trigger, D. M. Strom, D. R. Ward, G. Yekutieli, F. Scharf, R. Rylko, T. Kress, German Martinez, A. A. Carter, Ron Folman, A. Macpherson, N. J. Oldershaw, Richard Keeler, P. Utzat, R. Howard, J. S. White, M. A. Thomson, E. K. U. Gross, Daniele Bonacorsi, M. Sproston, J. Schieck, J. von Krogh, W. Mohr, A. Posthaus, G. W. Wilson, M. Hauschild, C. Markopoulos, L. A. del Pozo, C. Markus, G. T. Jones, E. H. Vokurka, S. Robertson, Gregor Herten, B. Wilkens, P. G. Estabrooks, J. E. Pilcher, N. K. Watson, P. M. Watkins, U. Jost, R. Mir, R. Hawkings, F. G. Oakham, B. Schmitt, E. L. Barberio, C. Dallapiccola, N. Altekamp, H. Voss, R. J. Barlow, D. J. Miller, R. J. Hemingway, B. W. Kennedy, P. Jovanovic, Austin Ball, Peter Krieger, and Alessandro Montanari
Subjects: Physics, Particle physics, Program, Opal, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Hadron, Microvertex Detector, Astrophysics::Cosmology and Extragalactic Astrophysics, Supersymmetry, Leptons, Energies, Radiative-Corrections, Nuclear physics, Couplings, High Energy Physics::Experiment, Pi%28K%29Nu%28Tau%29%22">Decay Tau->Pi(K)Nu(Tau), Engineering (miscellaneous), Particle Physics - Experiment, Lepton
Abstract: The branching ratios of the \tau^- -> h^- \nu_\tau, \tau^- -> h^- \pi^0 1991-1995 data recorded with the OPAL detector at LEP. These branching ratios are measured simultaneously using three selection criteria and are found to be BR(\tau^- -> h^- \nu_\tau) = (11.98 +/- 0.13 +/- 0.16)% BR(\tau^- -> h^- \pi^0 \nu_\tau) = (25.89 +/- 0.17 +/- 0.29)% BR(\tau^- -> h^- >=2 \pi^0 \nu_\tau) = ( 9.91 +/- 0.31 +/- 0.27)% where the first error is statistical and the second is systematic. The branching ratios of the \tau^- -> h^- \nu_\tau, \tau^- -> h^- \pi^0 \nu_\tau, \tau^- -> h^- >=2 \pi^0 \nu_\tau decays have been measured using the 1991-1995 data recorded with the OPAL detector at LEP. These branching ratios are measured simultaneously using three selection criteria and are found to be BR(\tau^- -> h^- \nu_\tau) = (11.98 +/- 0.13 +/- 0.16)% BR(\tau^- -> h^- \pi^0 \nu_\tau) = (25.89 +/- 0.17 +/- 0.29)% BR(\tau^- -> h^- >=2 \pi^0 \nu_\tau) = ( 9.91 +/- 0.31 +/- 0.27)% where the first error is statistical and the second is systematic.

216. Measurement of triple gauge boson couplings from W+W- production at root s=172GeV

Author: D. Rigby, R. J. Hemingway, W. J. McDonald, B. C. Shen, Ekg Sarkisyan, S. Braibant, Siegfried Bethke, A. K. Honma, P. W. Jeffreys, T. J. McMahon, W. G. Scott, A. Joly, I. Nakamura, A. D. Schaile, Gabriella Pasztor, Dave Charlton, H. Mes, B. W. Kennedy, P. Jovanovic, I. P. Duerdoth, P. Poffenberger, P. Hüntemeyer, R. Bartoldus, H. M. Fischer, R. K. Carnegie, M. Herndon, K. Stephens, Austin Ball, Peter Krieger, Richard Teuscher, G. A. Snow, C. P. Ward, H. O. Ogren, Christoph Geich-Gimbel, D. Glenzinski, Dezso Horvath, M. Bobinski, J. A. Wilson, S. Söldner-Rembold, R. Bürgin, W. R. Gibson, Alessandro Montanari, A. S. Turcot, F. Fiedler, V. Gibson, Beatrix Dienes, P. Vikas, P. S. Wells, M. Hapke, R. Van Kooten, C. Sbarra, E. von Türne, S. Yamashita, D. Lanske, J. Letts, P. Igo-Kemenes, M. J. Losty, Jean-Arcady Meyer, T. R. Junk, A. Schüning, B. T. Bouwens, U. Jost, R. Mir, R. Hawkings, Vakhtang Kartvelishvili, I. Trigger, L. Brigliadori, Terry Richard Wyatt, J. E. Bloomer, K. Ishii, H. Jeremie, M. Schumacher, E. Lefebvre, J. Grunhaus, D. E. Hutchcroft, D. R. Ward, T. Kress, K. Sachs, J. E. Conboy, D. Lazic, A. Fürtjes, D. L. Rees, Shlomo Dado, F. Wäckerle, D. M. Gingrich, F. Odorici, U. Ruppel, M. R. Ingram, Claire Shepherd-Themistocleous, F. Scharf, U. Müller, M. Kolrep, O. Schaile, German Martinez, N. J. Oldershaw, F. G. Oakham, Daniele Bonacorsi, M. Schrüder, R. M. Brown, E. do Couto e Silva, S. Robertson, Lorne Levinson, John Allison, B. Schmitt, S. W. O'Neale, R. W. Springer, Hans-Christian Schultz-Coulon, A. J. Martin, E. L. Barberio, M. Fanti, Gideon Bella, K. J. Anderson, Giora Mikenberg, Randall Sobie, G. D. Lafferty, Sachio Komamiya, Paolo Giacomelli, Sven Menke, M. J. Oreglia, C. Dallapiccola, M. Hansroul, H. J. Burckhart, Theodoros Geralis, E. Ros, A. T. Watson, C. Y. Chang, M. Boutemeur, F. S. Merritt, Georges Azuelos, E. Tsur, Jacqueline Batley, G. G. Hanson, Robert McPherson, M. Fierro, J. von Krogh, M. A. Thomson, A. A. Faust, J. E.G. Edwards, P. Taras, R. G. Kellogg, M. Verzocchi, K. W. Bell, J. Pálinkás, N. Altekamp, H. Voss, Mathieu Doucet, C. Burgard, R. D. Heuer, S. R. Lautenschlager, E. K. U. Gross, Csaba Hajdu, Michael Kobel, T. P. Kokott, H. A. Neal, T. Saeki, J. C. Hill, Satoshi Mihara, R. J. Barlow, Stefano Marcellini, D. J. Miller, J. R. Carter, G. N. Patrick, Fabrizio Fabbri, L. A. del Pozo, J. Bechtluft, G. Giacomelli, R. J. Homer, A. Skillman, M. Sproston, T. Behnke, K. Nagai, Allen Mincer, Guenter Duckeck, Gideon Alexander, Paolo Capiluppi, J. A. McKenna, D. R. Rust, Julie Kirk, Otmar Biebel, O. Runolfsson, C. R. Jones, S. M. Gascon-Shotkin, G. Yekutieli, R. Davis, A. Macchiolo, B. Stockhausen, Paul Kyberd, A. M. Lee, F. K. Loebinger, D. M. Strom, A. A. Carter, Ron Folman, M. Gruwé, C. Beeston, O. C. Cooke, C. M. Hawkes, P. Pfeifenschneider, M. S. Dixit, Frans Meijers, Claudio Grandi, J. Steuerer, Ivor Fleck, P. I. Kayal, C. K. Hargrove, G. W. Wilson, S. B. Anderson, P. Utzat, J. Patt, C. Hartmann, D. E. Plane, M. Hauschild, Joleen Pater, Richard Nisius, P. E.L. Clarke, A. Klier, J. M. Roney, P. Szymanski, Norbert Wermes, Sherry Towers, Marco Cuffiani, R. Giacomelli, T. Kawamoto, A. Oh, M. K. Jones, Stephen Hillier, J. P. Martin, G. M. Dallavalle, D. Chrisman, G. D. Long, Volker Blobel, C. Markus, S. Orito, J. Schieck, S. De Jong, R. Rylko, G. T. Jones, W. Mohr, M. F. Turner-Watson, A. Posthaus, M. Thiergen, E. H. Vokurka, Stephen Lloyd, M. Morii, Peter R Hobson, D. Zer-Zion, P. Routenburg, Matthew Evans, A. M. Rossi, A. N. Bell, Stan Bentvelsen, Ehud Duchovni, Reda Tafirout, Klaus Kurt Desch, M. Jimack, A. Biguzzi, A. Michelini, A. Rooke, J. G. Layter, Satoshi Tanaka, T. Kobayashi, Silvia Arcelli, A. Macpherson, S. Baumann, N. I. Geddes, Michael Hildreth, E. A. Mckigney, W. P. Lai, N. L. Rodning, Gregor Herten, B. Poli, D. I. Futyan, Tara Shears, P. G. Estabrooks, R. K. Keeler, R. Howard, J. S. White, B. Wilkens, N. K. Watson, P. M. Watkins, P. A. Hart, J. E. Pilcher, M. J. Pearce, J. Lauber, S. D. Talbot, D. Eatough, P. Gagnon, A. Sittler, Peter Schleper, Zoltan Laszlo Trocsanyi, Kiyotomo Kawagoe, S. D. Bird, P. Schenk, D. Axen, A. Jawahery, Peter Sherwood, P. Scharff-Hansen, Alexander Wagner, J. Ludwig, K. Runge, P. Bock, A. M. Smith, K. R. Hossain, R. Lahmann, Daniel Lellouch, D. C. Imrie, Takehiko Mori, James Pinfold, R. Perez-Ochoa, D. G. Fong, G. P. Siroli, J. Gascon, Christoph Schwick, I. J. Bloodworth, V. Zacek, J. W. Gary, D. S. Koetke, Yoram Rozen, M. Foucher, Marcello Mannelli, K. Stoll, Andris Skuja, S. Petzold, Tetsuro Mashimo, D. Karlen, Stefan Schmitt, J. Goldberg, W. Gorn, B. Nellen, P. Mättig, Shoji Asai, H. G. Evans, M. J. Goodrick, I. Cohen, S. A. Robins, Gunter Wolf, K. Ackerstaff, Stefan Kluth, and Shlomit Tarem
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Monte-Carlo Program, Microvertex Detector, Astrophysics::Cosmology and Extragalactic Astrophysics, Standard Model, Electroweak Vector Bosons, Angular distribution, Engineering (miscellaneous), Astrophysics::Galaxy Astrophysics, Coupling, Physics, Gauge boson, P(P)Over-Bar Collisions, 4-Fermion Processes, E+E Annihilation, High Energy Physics::Phenomenology, Cross-Sections, Trilinear Couplings, Optimal Observables, High Energy Physics::Experiment, Production (computer science), Astrophysics::Earth and Planetary Astrophysics, Energy (signal processing), W-Pair Production, Bar (unit)
Abstract: We present measurements of triple gauge boson coupling parameters using data recorded by the OPAL detector at LEP2, at a centre-of-mass energy of 172 GeV. A total of 120 W-pair candidates has been selected in the ${\rm q \bar q q \bar q}$, ${\rm q\bar q} \ell \bar\nu_\ell$ and $\ell \bar \nu_\ell \bar\ell^\prime \nu_{\ell^\prime }$ decay channels, for an integrated luminosity of 10.4 pb$^{-1}$. We use these data to determine several different anomalous coupling parameters using the measured cross-section and the distributions of kinematic variables. We measure $\alpha_{B\phi} = 0.35^{+1.29}_{-1.07} \pm 0.38$, $\alpha_{W\phi} = 0.00^{+0.30}_{-0.28} \pm 0.11$, $\alpha_W = 0.18^{+0.49}_{-0.47} \pm 0.23$, $\Delta g^{\rm z}_1 = -0.03^{+0.40}_{-0.37} \pm 0.14$, $\Delta\kappa_\gamma ^{(HISZ)} = 0.03^{+0.55}_{-0.51} \pm 0.20$, and $\Delta \kappa = 0.33^{+0.49}_{-0.46} \pm 0.21$. Combining the $\alpha_{W\phi}$ result with our previous result obtained from the 161 GeV data sample we measure $\alpha_{W\phi} = -0.08^{+0.28}_{-0.25} \pm 0.10$. All of these measurements are consistent with the Standard Model.

217. A STUDY OF B-MESON OSCILLATIONS USING DILEPTON EVENTS

Author: G. A. Beck, Achim Stahl, Tara Shears, P. Teixeira-Dias, P. A. Hart, C. M. Hawkes, Daniel Lellouch, B. Schmitt, S. G. Clowes, Takehiko Mori, M. Fierro, J. E.G. Edwards, M. J. Pearce, A. Buijs, V. Zacek, D. M. Strom, C. Stegmann, H. Fukui, D. Hochman, H. M. Fischer, James Pinfold, K. Stephens, B. Stockhausen, Paul Kyberd, F. K. Loebinger, T. Hilse, O. Runolfsson, A. Michelini, Margret Fincke-Keeler, C. Beeston, R. Van Kooten, Claudio Grandi, F. S. Merritt, D. G. Fong, Gregor Herten, B. Wilkens, Ehud Duchovni, P. S. Wells, J. P. Pansart, J. E. Pilcher, V. Gibson, J. Gascon, Kiyotomo Kawagoe, Terry Richard Wyatt, R. Giacomelli, D. Axen, I. J. Bloodworth, M. Jimack, M. Yurko, H. Mes, P. W. Jeffreys, G. W. Wilson, A. S. Turcot, M. Hauschild, Peter Sherwood, P. Igo-Kemenes, N. J. Oldershaw, Alexander Wagner, F. Palmonari, R.J. Akers, C. Markus, H. Jeremie, O. Schaile, M. Settles, Yoram Rozen, M. Starks, A. J. Martin, John Allison, J. Hagemann, J. Ludwig, Otmar Biebel, I. P. Duerdoth, D. R. Ward, P. Fath, T. Kress, M. Foucher, O. Tousignant, K. Runge, P. Bock, S. W. Gensler, Madjid Boutemeur, J. W. Gary, D. S. Koetke, R. E. Hughes-Jones, U. Maur, S. J. Hillier, Gideon Bella, Marcello Mannelli, J. E. Duboscq, J. A. McKenna, P. Bright-Thomas, D. L. Wagner, P. Gagnon, J. J. Ward, P. Vikas, Gunter Wolf, F. X. Gentit, S. A. Robins, Andris Skuja, Junichi Kanzaki, S. L. Chu, E. do Couto e Silva, H. J. Burckhart, Jacqueline Batley, D. Karlen, C. Burgard, V. H. Winterer, S. W. O'Neale, H. Deng, R. G. Kellogg, P. Weber, P. G. Estabrooks, K. J. Anderson, G. D. Long, D. M. Gingrich, J. C. Clayton, G. T. Zorn, Tetsuro Mashimo, U. Müller, R. Bartoldus, Richard Keeler, S. Braibant, H. M. Bosch, Stefano Marcellini, Wolfram Dietrich Zeuner, C. Darling, T. J. Smith, J. Letts, P. Berlich, H. O. Ogren, Christoph Geich-Gimbel, O. C. Cooke, S. Wotton, M. Fanti, Norbert Wermes, Sherry Towers, P. M. Watkins, P. Mättig, Shoji Asai, W. Gorn, C. Y. Chang, T. Kawamoto, R. Howard, Paolo Giacomelli, Claude Leroy, M. Hansroul, G. A. Snow, C. P. Ward, P. Taras, S. Orito, Stephen Lloyd, C. K. Hargrove, Matthias Schröder, Michael Kobel, Xinchou Lou, M. Tecchio, Robert M Brown, D. L. Rees, G. M. Dallavalle, J. E. Conboy, M. Rosvick, A. Fürtjes, S. Söldner-Rembold, E. Lefebvre, Silvia Arcelli, R. W. Springer, R. D. Heuer, Julie Kirk, T. Behnke, P. Scharff-Hansen, R. Lahmann, Fabrizio Fabbri, C. H. Shepherd-Themistocleous, D. C. Imrie, Erez Etzion, H. Lafoux, F. Odorici, M. W. Redmond, Tohru Takeshita, J. Steuerer, Stefan Kluth, Eilam Gross, Shlomit Tarem, D. E. Planc, Hans-Christian Schultz-Coulon, D. R. Rust, Randall Sobie, Michael Schulz, G. D. Lafferty, P. Poffenberger, R. J. Homer, Peter Fischer, N. Capdevielle, Shlomo Dado, J. von Krogh, Alan Watson, C. J. Oram, A. M. Smith, K. Ametewee, Dave Charlton, P. Schütz, Georges Azuelos, M. J. Oreglia, W. P. Lai, Gideon Alexander, G. Vasseur, Paolo Capiluppi, R. Bürgin, B. Fabbro, Barry King, B. Lorazo, T. W. Pritchard, A. M. Lee, A. Gaidot, W. R. Gibson, K. W. Bell, J. M. Roney, A. M. Rossi, R. P. Middleton, G. P. Siroli, J. King, G. Giacomelli, J. C. Hill, A. I. McNab, J. Goldberg, Marco Cuffiani, J. R. Carter, Misao Sasaki, B. Nellen, G. N. Patrick, Christoph Schwick, A. Beck, Giora Mikenberg, B. C. Shen, A. Jawahery, P. Leblanc, Guenter Duckeck, E. Heflin, Siegfried Bethke, A. K. Honma, Dave Robinson, B. Nijjhar, W. G. Scott, N. I. Geddes, Lorne Levinson, R. Kowalewski, P. D. Phillips, H. G. Evans, M. J. Goodrick, I. Cohen, Gilles Beaudoin, N. L. Rodning, M. J. Losty, A. Skillman, B. Poli, P. Szymanski, L. A. del Pozo, Reda Tafirout, C. Sbarra, C. Jui, Stan Bentvelsen, Michael Dittmar, G. Yekutieli, T. Kobayashi, A. A. Carter, Ron Folman, Roger Jones, P. Utzat, M. G. Rison, T. J. McMahon, J. Schwiening, R. K. Carnegie, J. A. Wilson, P. A. Elcombe, F. Scharf, A. D. Schaile, D. Rigby, R. J. Hemingway, B. W. Kennedy, P. Jovanovic, N. K. Watson, Austin Ball, Peter Krieger, W. Mohr, A. Posthaus, W. Matthews, Manuella Vincter, Alessandro Montanari, M. A. Thomson, T. Wlodek, M. Sproston, T. Tsukamoto, R. Mir, N. Tesch, J. Lauber, P. E.L. Clarke, U. C. Dunwoody, M. K. Jones, J. P. Martin, H. Takeda, M. Tscheulin, F. G. Oakham, S. De Jong, E. L. Barberio, A. Yeaman, C. Dallapiccola, J. D. Gillies, H. Przysiezniak, M. F. Turner-Watson, M. Morii, Peter R Hobson, P. Routenburg, R. J. Barlow, Sachio Komamiya, Theodoros Geralis, E. Ros, D. J. Miller, T. P. Kokott, A. Luig, J. G. Layter, C. Charlesworth, G. G. Hanson, P. Schenk, M. S. Dixit, and Frans Meijers
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Lower limit, Momentum, Nuclear physics, High Energy Physics::Experiment, B meson, Engineering (miscellaneous), Particle Physics - Experiment, Eigenvalues and eigenvectors, Lepton
Abstract: The time dependence of B meson oscillations is studied using hadronic Z0 decays with identified leptons in both thrust hemispheres. Decay times are reconstructed for each of the semileptonic B decays by forming vertices which include the lepton and by estimating the B meson momentum. The mass difference of the two mass eigenstates in the Bd0 system, Δmd, is measured to be$0.462_{ - 0.053 - 0.035}^{ + 0.040 + 0.052} ps^{ - 1}$, where the first error is statistical and the second systematic. For the Bs0 system, a lower limit of Δms>2.2 ps−1 at 95% C.L. is derived.

218. Quantum complementarity of clocks in the context of general relativity.

Author: Zhifan Zhou, Yair Margalit, Daniel Rohrlich, Yonathan Japha, and Ron Folman
Subjects: ATOMIC clocks, INTERFEROMETRY, QUANTUM mechanics
Abstract: Clocks play a special role at the interface of general relativity and quantum mechanics. We analyze a clock-interferometry thought experiment and go on to theoretically derive and experimentally test a complementarity relation for quantum clocks in the context of the gravitational time lag. The effect of time lag is simulated using a magnetic gradient. We study this relation in detail and discuss its application to various types of quantum clocks. [ABSTRACT FROM AUTHOR]
Published: 2018
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218 results on '"Ron Folman"'

201. Improved measurement of the lifetime of the tau lepton

202. A STUDY OF CHARM MESON PRODUCTION IN SEMILEPTONIC B-DECAYS

203. Search for charged Higgs bosons using the OPAL detector at LEP

204. INCLUSIVE STRANGE VECTOR AND TENSOR MESON PRODUCTION IN HADRONIC Z(0) DECAYS

205. A measurement of the hadronic decay current and the ντ-helicity in τ- → π- π- π+ ντ

206. An updated study of B meson oscillations using dilepton events

207. Bose-Einstein correlations in e+e- → W+W- at 172 and 183 GeV

208. Measurements of the b quark forward-backward asymmetry around the Z(0) peak using jet charge and vertex charge

209. IMPROVED MEASUREMENTS OF THE B-0 AND B+ MESON LIFETIMES

210. A study of four-fermion final states with high multiplicity at LEP

211. Possibility of single-atom detection on a chip

212. SEARCH FOR NEUTRAL HIGGS BOSONS IN THE MINIMAL SUPERSYMMETRIC EXTENSION OF THE STANDARD MODEL

213. MEASUREMENT OF THE LONGITUDINAL, TRANSVERSE AND ASYMMETRY FRAGMENTATION FUNCTIONS AT LEP

214. Measurement of the semileptonic branching ratio of charm hadrons produced in Z0 → cc̄ decays

215. Measurement of the one-prong hadronic tau branching ratios at LEP

216. Measurement of triple gauge boson couplings from W+W- production at root s=172GeV

217. A STUDY OF B-MESON OSCILLATIONS USING DILEPTON EVENTS

218. Quantum complementarity of clocks in the context of general relativity.

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