Author: "E. H. Thorndike" - Searchworks@Jio Institute Digital Library Search Results

651. Measurement of the Branching Ratio ofϒ(3S)→π+π−ϒ(1S)

Author: R. S. Panvini, E. H. Thorndike, G. Parkhurst, F. M. Pipkin, R. Cabenda, M. D. Mestayer, A. Snyder, N. Horwitz, C. J. Bebek, E. Nordberg, M. Jibaly, H. Van Hecke, C. Rosenfeld, V. Kistiakowsky, M. Ogg, P. Avery, Robert Stone, G. C. Moneti, M. S. Alam, P. Skubic, J. Chauveau, G. Rucinski, D. L. Kreinick, R. Galik, P. C. Stein, J. Kandaswamy, S. E. Csorna, F. Morrow, A. Chen, F. Sannes, R. Ehrlich, S. L. Olsen, D. Herrup, M. Ito, R. Perchonok, K. Chadwick, A. Fridman, H. Jawahery, T. Ferguson, N. B. Mistry, Ron Poling, Sheldon Stone, Richard Wilson, S. Holzner, R. D. Kass, Joseph Izen, R. G. Hicks, J. Rohlf, W. W. MacKay, P. Ganci, M. Hempstead, H. Kagan, J. W. Dewire, A. J. Sadoff, M. Goldberg, D. Weber, J. Hassard, A. Silverman, P. Lipari, R. Plunkett, D. G. Cassel, R. Wilcke, Murdock Gilchriese, B. Gittelman, Y. Kubota, T. Gentile, D. L. Hartill, James C. Green, A. C. Melissinos, and D. Andrews
Subjects: Physics, Particle decay, Pair production, Pion, Meson, Branching fraction, Electron–positron annihilation, Hadron, Mass spectrum, Analytical chemistry, General Physics and Astronomy
Abstract: The branching ratio of UPSILON(3S)..--> pi../sup +/..pi../sup -/UPSILON(1S) has been measured to be (4.9 +- 0.9 +- 0.5)%. The di-pion invariant-mass distribution for this decay is flatter than that for the decays UPSILON(2S)..--> pi../sup +/..pi../sup -/UPSILON(1S) and psi'..--> pi../sup +/..pi../sup -/psi.
Published: 1982

652. Evidence for theFMeson at 1970 MeV

Author: J. Chauveau, C. Rosenfeld, Richard Wilson, Karl Berkelman, V. Kistiakowsky, Joan A. Guida, J. Kandaswamy, A. Jawahery, D. G. Cassel, R. S. Panvini, D. L. Hartill, D. L. Kreinick, E. Nordberg, H. Van Hecke, R. Wilcke, N. Horwitz, A. Chen, Murdock Gilchriese, F. Sannes, D. Weber, A. Snyder, P. Skubic, A. J. Sadoff, B. Gittelman, S. L. Olsen, James C. Green, T. Gentile, J. Hassard, A. Silverman, M. D. Mestayer, Xia Yi, R. Plunkett, Ron Poling, E. H. Thorndike, M. Ogg, F. M. Pipkin, P. Lipari, M. S. Alam, H. Halling, D. Peterson, D. Herrup, J. W. Dewire, Y. Kubota, L. Garren, Jan M. Guida, R. G. Hicks, R. Ehrlich, M. Hempstead, P. Avery, Paul Tipton, A. C. Melissinos, N. B. Mistry, R. Perchonok, K. Chadwick, C. G. Trahern, F. Morrow, P. C. Stein, S. E. Csorna, T. Ferguson, K. Kinoshita, R. T. Giles, R. Galik, Harris Kagan, G. C. Moneti, S. Holzner, S. Behrends, W. W. MacKay, R. D. Kass, P. Ganci, Sheldon Stone, M. Goldberg, C. Bebek, G. Parkhurst, M. Ito, Robert Stone, and G. Rucinski
Subjects: Physics, Particle physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, Elementary particle, Nuclear physics, Particle decay, Pion, High Energy Physics::Experiment, Continuum (set theory), Nuclear Experiment
Abstract: Evidence is presented for a narrow meson resonance of mass 1970\ifmmode\pm\else\textpm\fi{}5\ifmmode\pm\else\textpm\fi{}5 MeV produced in continuum ${e}^{+}{e}^{\ensuremath{-}}$ annihilations at $\sqrt{s}$ of 10.5 GeV, and decaying into a $\ensuremath{\phi}$ and a charged $\ensuremath{\pi}$.
Published: 1983

653. Observation of the decayB→FX

Author: P. Haas, M. Hempstead, T. Jensen, H. Kagan, R. Kass, S. Behrends, T. Gentile, Jan M. Guida, Joan A. Guida, F. Morrow, R. Poling, C. Rosenfeld, E. H. Thorndike, P. Tipton, J. Green, R. Namjoshi, F. Sannes, R. Stone, M. S. Alam, N. Katayama, I. J. Kim, C. R. Sun, V. Tanikella, D. Bortoletto, A. Chen, L. Garren, M. Goldberg, N. Horwitz, A. Jawahery, P. Lubrano, G. C. Moneti, S. E. Csorna, M. D. Mestayer, R. S. Panvini, G. B. Word, Xia Yi, A. Bean, G. J. Bobbink, I. Brock, A. Engler, T. Ferguson, R. Kraemer, C. Rippich, R. Sutton, H. Vogel, C. Bebek, K. Berkelman, E. Blucher, D. G. Cassel, T. Copie, R. DeSalvo, J. W. DeWire, R. Ehrlich, R. S. Galik, M. G. D. Gilchriese, B. Gittelman, S. W. Gray, A. M. Halling, D. L. Hartill, B. K. Heltsley, S. Holzner, M. Ito, J. Kandaswamy, R. Kowalewski, D. L. Kreinick, Y. Kubota, N. B. Mistry, J. Mueller, E. Nordberg, M. Ogg, D. Peterson, D. Perticone, M. Pisharody, K. Read, D. Riley, A. Silverman, S. Stone, A. J. Sadoff, P. Avery, D. Besson, T. Bowcock, R. T. Giles, J. Hassard, K. Kinoshita, F. M. Pipkin, and Richard Wilson
Subjects: Physics, Nuclear physics, Particle decay, Pion, Meson, Branching fraction, Electron–positron annihilation, Hadron, Mass spectrum, General Physics and Astronomy, B meson
Abstract: We present evidence for inclusive F-italic-meson production in B-italic-meson decay. The product branching fraction B-italic(B-italic..-->..F-italicX-italic)B-italic(F-italic/sup +/..-->..phi..pi../sup +/) is measured to be 0.0038 +- 0.010. The F-italic momentum spectrum indicates the presence of a large component of two-body final states in the decay B-italic..-->..F-italicX-italic.
Published: 1986

654. Experimental evidence for the non-Abelian nature of QCD from a study of multijet events produced ine+e−annihilation

Author: W. Metcalf, I. H. Park, S. Sakamoto, T. Ishizuka, F. Naito, Kazumasa Miyano, F. Sannes, K. Sparks, K. Toyoshima, Y. C. Zhu, S. L. Olsen, Hiroyuki Sagawa, T. Mori, C. G. Trahern, T. Kumita, R. Coombes, R. R. McNeil, L. E. Piilonen, E. H. Thorndike, Sarah Catherine Eno, Susumu Terada, J. Lim, J. Li, T. Takeda, Alan Sill, R. Chiba, M. C.S. Williams, J. S. Kang, S. K. Kim, H. Kagan, S. Igarashi, H. Ichinose, J. Vinson, H. Miyata, R. L. Imlay, F. Kajino, Y. K. Li, A. Murakami, S. Kobayashi, M. H. Lee, H. S. Budd, P. N. Kirk, C. A. Fry, S. S. Myung, R. Poling, D. Blanis, C. P. Cheng, Y. Yamashita, H. Itoh, M. E. Mattson, K. Eguchi, Y. Sakai, Hideo Yokota, James C. Green, Yusuke Higashi, A. Maki, S. Lusin, K. L. Sterner, K. Ohta, Winston Ko, Yoshimasa Kurihara, A. Bacala, Y. H. Ho, Tsunehiko Omori, Robert Stone, Kazuo Abe, G. N. Kim, N. M. Shaw, Dong-Chul Son, J. R. Smith, Kaori Maeshima, Ryuki Tanaka, S. Matsumoto, Y. Takaiwa, S. Trentalange, D. Perticone, E. H. Low, P. Perez, T. L.T. Thomas, Kiyosumi Tsuchiya, A. T.M. Wang, Z. P. Mao, A. Abashian, Steve Schnetzer, H. Harada, R. L. Lander, M. Frautschi, Hyunyong Kim, K. Gotow, S. Wilson, K. Ueno, R. L. Malchow, Yongsun Kim, R. D. Kass, Y. T. Xu, H. Kozuka, T. Nozaki, Y. Ishi, H. W. Zheng, E. J. Kim, Takashi Sasaki, Y. Fujii, Yasuhiro Sugimoto, A. Bodek, and C. Rosenfeld
Subjects: Physics, Quantum chromodynamics, Coupling constant, Particle physics, Annihilation, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, General Physics and Astronomy, Elementary particle, Nuclear physics, High Energy Physics::Experiment, Production (computer science), Abelian group
Abstract: We present evidence for the non-Abelian nature of QCD from a study of multijet events produced in ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ annihilations from \ensuremath{\surd}s =50 to 57 GeV in the AMY detector at the KEK storage ring TRISTAN. A comparison of the three-jet event fraction at TRISTAN to the fraction of the DESY storage ring PETRA shows that the QCD coupling strength ${\ensuremath{\alpha}}_{s}$ decreases with increasing ${Q}^{2}$. In addition, measurements of the angular distributions of four-jet events show evidence for the triple-gluon vertex.
Published: 1989

655. D0Spectrum fromB-Meson Decay

Author: Robert Stone, Xia Yi, D. G. Cassel, C. G. Trahern, P. C. Stein, S. E. Csorna, N. Horwitz, H. Kagan, J. Chauveau, K. Kinoshita, S. L. Olsen, M. Halling, R. Plunkett, E. H. Thorndike, A. Jawahery, F. M. Pipkin, D. Weber, A. J. Sadoff, J. Hassard, Ron Poling, Y. Kubota, C. Bebek, G. Parkhurst, A. Snyder, A. Silverman, Karl Berkelman, A. C. Melissinos, Jan M. Guida, A. Chen, L. Garren, F. Sannes, K. Chadwick, M. Hempstead, D. Herrup, D. L. Kreinick, D. Andrews, S. Holzner, S. Behrends, R. Ehrlich, M. Ogg, P. Skubic, C. Rosenfeld, M. Ito, M. S. Alam, T. Ferguson, M. D. Mestayer, R. Wilcke, Murdock Gilchriese, P. Lipari, P. Avery, R. S. Panvini, B. Gittelman, R. Perchonok, R. Galik, D. Peterson, N. B. Mistry, E. Nordberg, M. Jibaly, H. Van Hecke, Joan A. Guida, D. L. Hartill, J. Kandaswamy, F. Morrow, V. Kistiakowsky, R. D. Kass, R. G. Hicks, James C. Green, G. Rucinski, T. Gentile, Sheldon Stone, R. T. Giles, G. C. Moneti, J. W. Dewire, M. Goldberg, W. W. MacKay, P. Ganci, and Richard Wilson
Subjects: Physics, Quark, Semileptonic decay, Meson, Branching fraction, High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, General Physics and Astronomy, Nuclear physics, Particle decay, Pion, High Energy Physics::Experiment, B meson, Nuclear Experiment
Abstract: The inclusive branching fraction for B-meson decay into D/sup 0/ mesons and the momentum spectrum of the D/sup 0/'s have been measured. 0.8 +- 0.2 +- 0.2 D/sup 0/ per B decay was found. The shape of the spectrum suggests an interesting picture of B-meson decay.
Published: 1983

656. Inclusive photoproduction ofηmesons at 9.7 GeV

Author: M. Singer, J. Harvey, E. H. Thorndike, D. E. Andrews, J. Abramson, E. N. May, M. E. Nordberg, F. Lobkowicz, and C. A. Nelson
Subjects: Physics, Nuclear physics, Particle physics, SIMPLE (dark matter experiment), Cross section (physics), Meson, Deuterium, Hydrogen, chemistry, Momentum transfer, chemistry.chemical_element, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Inclusive $\ensuremath{\eta}$ photoproduction has been studied at 9.7 GeV, on hydrogen and deuterium targets. A simple, parameter-free ${\ensuremath{\rho}}^{0}$-dominance model adequately fits the forward cross sections, but overestimates the cross section at large momentum transfer.
Published: 1979

657. Exclusive decays and masses of theBmesons

Author: I. J. Kim, D. Riley, D. L. Hartill, V. Tanikella, V. Sharma, R. Ehrlich, Paul Tipton, C. Bebek, M. Hempstead, B. K. Heltsley, R. S. Galik, Kenneth Francis Read, M. Ito, R. DeSalvo, Hans J. Vogel, G. C. Moneti, Y. Kubota, F. Morrow, Richard Wilson, R. T. Giles, D. Perticone, S. Holzner, S. Behrends, N. Katayama, D. G. Cassel, T. Jensen, D. Xiao, M. Goldberg, M. S. Alam, P. Lubrano, A. M. Halling, T. Gentile, L. Garren, D. Besson, D. L. Kreinick, R. Holmes, M. Pisharody, Ian Brock, S. E. Csorna, M. D. Mestayer, James Mueller, Karl Berkelman, R. Kowalewski, E. H. Thorndike, Themistocles Bowcock, Alice Bean, A. Chen, F. M. Pipkin, S. Nandi, Ron Poling, K. Kinoshita, Daniela Bortoletto, N. B. Mistry, P. Thoma, J. W. Dewire, E. Blucher, M. Ogg, N. Horwitz, G. B. Word, J. Wolinski, R. Namjoshi, E. Nordberg, P. Haas, A. Silverman, A. Jawahery, Thomas Ferguson, Sheldon Stone, S. W. Gray, Paul Avery, H. Kagan, Murdock Gilchriese, C. Rippich, B. Gittelman, Chih-Ree Sun, T. Copie, R. D. Kass, A. J. Sadoff, R. S. Panvini, A. Engler, G. J. Bobbink, Jan M. Guida, Joan A. Guida, J. Kandaswamy, R. W. Kraemer, and D. Peterson
Subjects: Physics, Nuclear physics, Particle physics, Pion, Branching fraction, Electron–positron annihilation, High Energy Physics::Experiment, B meson
Abstract: We report on the observation of exclusive decays of B mesons to modes containing a D or ${D}^{\mathrm{*}+}$ and one or two charged pions. From kinematic reconstruction we determine the masses of the neutral and charged B mesons to be 5280.6\ifmmode\pm\else\textpm\fi{}0.8\ifmmode\pm\else\textpm\fi{}2.0 and 5278.6\ifmmode\pm\else\textpm\fi{}0.8\ifmmode\pm\else\textpm\fi{}2.0 MeV, respectively. The mass difference is 2.0\ifmmode\pm\else\textpm\fi{}1.1\ifmmode\pm\else\textpm\fi{}0.3 MeV. Branching ratios for these modes are given. From the charged-particle momentum spectrum in \ensuremath{\Upsilon}(4S) decay, we find the average branching fraction for B-meson decay into a D or ${D}^{\mathrm{*}}$ plus a charged pion to be (0.81\ifmmode\pm\else\textpm\fi{}0.16)%. We find no signal for exclusive decays which would arise from the b\ensuremath{\rightarrow}u transition and set upper limits for several such modes.
Published: 1987

658. Decay ofb-Flavored Hadrons to Single-Muon and Dimuon Final States

Author: J. Rohlf, W. Tanenbaum, H. Kooy, A. Chen, F. Sannes, N. B. Mistry, Murdock Gilchriese, W. W. MacKay, J. Haggerty, B. Gittelman, T. Gentile, Richard Talman, P. Ganci, E. Nordberg, D. L. Hartill, Harris Kagan, D. L. Kreinick, Sheldon Stone, P. Skubic, S. L. Olsen, C. J. Bebek, M. S. Alam, R. Plunkett, W. A. Loomis, H. G. Thonemann, Robert Stone, D. Herrup, R. Perchonok, Karl Berkelman, Richard Wilson, J. S. Poucher, J. Mueller, R. D. Kass, P. C. Stein, C. Rosenfeld, S. E. Csorna, J. Kandaswamy, D. G. Cassel, A. J. Sadoff, E. H. Thorndike, N. Horwitz, K. A. Shinsky, Ron Poling, C. Longuemare, J. W. Dewire, D. Potter, M. Goldberg, G. C. Moneti, F. M. Pipkin, R. H. Siemann, G. Rucinski, P. Lariccia, R. Cabenda, A. Brody, R. S. Panvini, M. Herzlinger, D. L. Bridges, R. Ehrlich, F. Lobkowicz, Joseph Izen, A. C. Melissinos, D. Andrews, D. Weber, A. Silverman, K. Chadwick, and T. Ferguson
Subjects: Nuclear physics, Physics, Particle decay, Particle physics, Muon, Meson, Branching fraction, Quark model, Hadron, General Physics and Astronomy, B meson, Lepton
Abstract: An enhancement in the inclusive cross section for single muons produced in e/sup +/e/sup -/ annihilations at the UPSILON(4S) is observed, confirming the interpretation that a new bare flavor (B mesons) is produced at the UPSILON(4S). A branching ratio for B..-->..X..mu nu.. of (9.4 +- 3.6)% is obtained. The two-muon decay, B..-->..X..mu../sup +/..mu../sup -/, is not observed, providing a 90%-confidence-level upper limit for the branching ratio for the decay of 1.7%. Combining this with our previously reported limit of 5% for B..-->..Xe/sup +/e/sup -/, we obtain 1.3% as an upper limit for B..-->..Xl/sup + -/.
Published: 1981

659. Charged-Particle Multiplicities inB-Meson Decay

Author: R. G. Hicks, J. Rohlf, E. H. Thorndike, R. Wilcke, Murdock Gilchriese, F. M. Pipkin, M. Herzlinger, M. Goldberg, W. W. MacKay, P. Ganci, B. Gittelman, R. S. Panvini, D. L. Kreinick, E. Nordberg, D. Herrup, P. Lipari, M. S. Alam, R. Plunkett, A. Chen, F. Sannes, A. Snyder, R. Ehrlich, C. Rosenfeld, Ron Poling, P. C. Stein, J. Chauveau, Joseph Izen, S. E. Csorna, S. L. Olsen, J. Haggerty, D. G. Cassel, W. A. Loomis, R. D. Kass, P. Avery, P. Skubic, K. Chadwick, M. Hempstead, Robert Stone, T. Gentile, T. Ferguson, A. Fridman, A. Brody, W. Tanenbaum, J. W. Dewire, C. J. Bebek, N. B. Mistry, Richard Wilson, A. J. Sadoff, Sheldon Stone, D. Weber, F. Morrow, J. Kandaswamy, A. Silverman, R. Cabenda, Harris Kagan, D. L. Hartill, R. Perchonok, James C. Green, P. Pistilli, A. C. Melissinos, D. Andrews, G. C. Moneti, N. Horwitz, G. Rucinski, Karl Berkelman, S. Holzner, and H. Kooy
Subjects: Physics, Particle physics, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, General Physics and Astronomy, Multiplicity (mathematics), Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, Charged particle, Nuclear physics, Particle decay, High Energy Physics::Experiment, B meson, Lepton
Abstract: The charged multiplicity has been measured at the UPSILON(4S) and a value of 5.75 +- 0.1 +- 0.2 has been obtained for the mean charged multiplicity in B-meson decay. Combining this result with the measurement of prompt letpons from B decay, the values 4.1 +- 0.35 +- 0.2 and 6.3 +- 0.2 +- 0.2 are found for the semileptonic and nonleptonic charged multiplicities, respectively. If b..-->..c dominance is assumed for the weak decay of the B meson, then the semileptonic multiplicity is consistent with the recoil mass determined from the lepton momentum spectrum.
Published: 1982

660. DecayB→ψX

Author: P. Haas, M. Hempstead, T. Jensen, H. Kagan, R. Kass, S. Behrends, T. Gentile, Jan M. Guida, Joan A. Guida, F. Morrow, R. Poling, C. Rosenfeld, E. H. Thorndike, P. Tipton, D. Besson, J. Green, R. Namjoshi, F. Sannes, P. Skubic, R. Stone, D. Bortoletto, A. Chen, M. Goldberg, N. Horwitz, A. Jawahery, P. Lubrano, G. C. Moneti, C. G. Trahern, H. van Hecke, S. E. Csorna, L. Garren, M. D. Mestayer, R. S. Panvini, G. B. Word, Xia Yi, M. S. Alam, A. Bean, T. Ferguson, P. Avery, C. Bebek, K. Berkelman, E. Blucher, D. G. Cassel, T. Copie, R. DeSalvo, J. W. DeWire, R. Ehrlich, R. S. Galik, M. G. D. Gilchriese, B. Gittelman, S. W. Gray, A. M. Halling, D. L. Hartill, B. K. Heltsley, S. Holzner, M. Ito, J. Kandaswamy, D. L. Kreinick, Y. Kubota, N. B. Mistry, E. Nordberg, M. Ogg, D. Peterson, D. Perticone, M. Pisharody, K. Read, A. Silverman, P. C. Stein, S. Stone, Xu Kezun, A. J. Sadoff, T. Bowcock, R. T. Giles, J. Hassard, K. Kinoshita, F. M. Pipkin, and Richard Wilson
Subjects: Physics, Muon, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, Nuclear physics, Pair production, High Energy Physics::Experiment, B meson, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Astrophysics::Galaxy Astrophysics, Lepton
Abstract: We have measured the inclusive branching ratio for B..-->..psiX to be (1.10 +- 0.21 +- 0.23)%. The momentum distribution of the psi mesons suggests a significant fraction of two-body decays.
Published: 1985

661. Search for magnetically charged particles produced ine+e−annihilations at√s =10.6GeV

Author: V. Tanikella, R. S. Galik, R. DeSalvo, Y. Kubota, Joan A. Guida, J. Kandaswamy, R. W. Kraemer, G. C. Moneti, Xia Yi, D. Peterson, H. Kagan, T. Jensen, L. Garren, I. J. Kim, S. E. Csorna, K. Kinoshita, A. M. Halling, Murdock Gilchriese, M. Pisharody, A. Jawahery, B. Gittelman, D. Xiao, M. S. Alam, Karl Berkelman, D. L. Kreinick, Jan M. Guida, N. Horwitz, M. Goldberg, G. B. Word, E. Nordberg, Ian Brock, R. Kowalewski, Paul Tipton, James Mueller, Themistocles Bowcock, F. Morrow, P. Haas, E. H. Thorndike, D. G. Cassel, E. Blucher, A. Chen, F. M. Pipkin, N. B. Mistry, Sheldon Stone, A. J. Sadoff, M. Ito, T. Gentile, V. Sharma, Paul Avery, R. Namjoshi, D. L. Hartill, R. Ehrlich, P. Lubrano, M. D. Mestayer, J. Hassard, Hans J. Vogel, A. Silverman, R. Holmes, J. Wolinski, B. K. Heltsley, N. Katayama, Kenneth Francis Read, Thomas Ferguson, Alice Bean, C. Bebek, C. Rippich, R. S. Panvini, G. J. Bobbink, T. Copie, M. Ogg, R. T. Giles, Ron Poling, A. Engler, R. D. Kass, D. Perticone, S. Holzner, S. Behrends, Richard Wilson, Chih-Ree Sun, D. Riley, M. Hempstead, S. W. Gray, Daniela Bortoletto, J. W. Dewire, and D. Besson
Subjects: Nuclear physics, Physics, Particle physics, Annihilation, Spectrometer, High Energy Physics::Experiment, Elementary particle, Cornell Electron Storage Ring, Tracking (particle physics), Charged particle, Particle identification, Magnetic field
Abstract: Energetic particles carrying magnetic charge can be identified by their trajectory in a magnetic field. We report here the first application of this property to a search in e/sup +/e/sup -/ annihilations. By tracking the paths of particles in the CLEO magnetic spectrometer at the Cornell Electron Storage Ring we place upper limits on the production of magnetically charged particles with mass m
Published: 1987

662. Measurement of the tau lifetime

Author: T. Gentile, Ian Shipsey, V. Tanikella, A. Jawahery, P. Thoma, M. Procario, B. K. Heltsley, Murdock Gilchriese, B. Gittelman, C. Bebek, D. Perticone, S. Holzner, S. Behrends, P. Haas, Kenneth Francis Read, D. Xiao, V. Sharma, F. Morrow, I. J. Kim, S. E. Csorna, R. Ehrlich, E. H. Thorndike, D. Besson, R. S. Galik, A. Silverman, Y. Kubota, D. L. Kreinick, K. Kinoshita, F. M. Pipkin, Ron Poling, W. C. Li, T. Jensen, D. Riley, Daniela Bortoletto, Joan A. Guida, L. Garren, A. M. Halling, J. W. Dewire, Thomas Ferguson, N. Horwitz, J. Kandaswamy, S. W. Gray, T. Copie, R. W. Kraemer, M. D. Mestayer, Hans J. Vogel, R. Kowalewski, M. Hempstead, R. DeSalvo, N. Katayama, Paul Tipton, A. Engler, James Mueller, D. Peterson, G. C. Moneti, Chih-Ree Sun, M. Goldberg, Xinchou Lou, D. L. Hartill, Ian Brock, Richard Wilson, M. Pisharody, A. J. Sadoff, Karl Berkelman, Sheldon Stone, Paul Avery, M. S. Alam, N. B. Mistry, J. Wolinski, Harris Kagan, C. Rippich, Themistocles Bowcock, R. D. Kass, A. Chen, E. Blucher, R. Namjoshi, P. Lubrano, R. Holmes, Alice Bean, Jan M. Guida, D. G. Cassel, E. Nordberg, R. S. Panvini, G. J. Bobbink, and G. B. Word
Subjects: Physics, Particle physics, Particle decay, Pair production, Muon, Branching fraction, High Energy Physics::Experiment, Elementary particle, Neutrino, Lepton, Standard Model
Abstract: If the tau lepton couples to the charged weak current with universal strength, its lifetime can be expressed in terms of the muon's lifetime, the ratio of the masses of the muon and the tau, and the tau's branching ratio into e anti nu/sub e/ nu/sub tau/ as tau/sub tau/ = tau/sub ..mu../ (m/sub ..mu..//m/sub tau/)/sup 5/ B(tau ..-->.. e anti nu/sub e/nu/sub tau/) = 2.8 +- 0.2 x 10/sup -13/ s. This paper describes the measurement of the tau lifetime made by the Mark II collaboration, using a new high precision drift chamber in contunction with the Mark II detector at PEP. The results of other tau lifetime measurements are summarized.
Published: 1987

663. Limits onB0B¯0mixing and &

Author: Xia Yi, Thomas Ferguson, R. Namjoshi, P. Haas, G.J. Bobbink, M. Ito, S. W. Gray, E. Blucher, D. Z. Besson, H. Kagan, M. Pisharody, Karl Berkelman, S. E. Csorna, M. D. Mestayer, Sheldon Stone, Joan A. Guida, J. Kandaswamy, A. J. Sadoff, R. Ehrlich, Paul Avery, V. Tanikella, Richard Wilson, G. B. Word, K. Kinoshita, R. S. Panvini, C. Rippich, A. M. Halling, A. Chen, Murdock Gilchriese, D. L. Hartill, B. Gittelman, Daniela Bortoletto, D. Peterson, P. Thoma, I. J. Kim, T. Gentile, M. S. Alam, E. H. Thorndike, D. Perticone, J. W. Dewire, N. Horwitz, F. M. Pipkin, S. Holzner, S. Behrends, Jan M. Guida, T. J. V. Bowcock, A. Jawahery, James Mueller, M. Hempstead, L. Garren, Hans J. Vogel, D. Riley, R. S. Galik, R. Kowalewski, C. R. Sun, R. D. Kass, N. B. Mistry, D. G. Cassel, I. C. Brock, R. Poling, Yuichi Kubota, T. Jensen, E. Nordberg, Paul Tipton, John Hassard, D. L. Kreinick, J. Wolinski, C. Bebek, B. K. Heltsley, Kenneth Francis Read, A. Silverman, R. W. Kraemer, T. Copie, A. Engler, R. Desalvo, R. T. Giles, N. Katayama, P. Lubrano, R. Holmes, Alice Bean, M. Goldberg, G. C. Moneti, Vivek Sharma, F. Morrow, D. Xiao, and M. Ogg
Subjects: Semileptonic decay, Physics, Nuclear physics, Particle physics, Particle decay, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, B meson, Lepton
Abstract: Limits are set on B/sup 0/B-bar/sup 0/ mixing by use of dilepton events from UPSILON(4S) decay. On the assumption that the charged- and neutral-B semileptonic branching ratios are equal and that 41% of the B mesons from the UPSILON(4S) are neutral, a 90%-confidence-level upper limit of 24% is set on B/sup 0/B-bar/sup 0/ mixing. Limits are also given for the ratio of the lifetimes of neutral and charged B mesons. The 90%-confidence-level limits are 0.44
Published: 1987

664. Inclusive Decay ofBMesons into ChargedD*

Author: P. Avery, J. W. Dewire, T. Copie, D. L. Kreinick, C. Bebek, G. Parkhurst, Harris Kagan, W. W. MacKay, E. Nordberg, Xu Kezun, R. T. Giles, J. Hassard, Richard Wilson, Robert Stone, L. Garren, M. D. Mestayer, A. Silverman, D. G. Cassel, T. Jensen, R. Ehrlich, R. D. Kass, A. Chen, M. Ogg, Joan A. Guida, F. Morrow, J. Kandaswamy, F. Sannes, P. Skubic, R. S. Galik, M. S. Alam, T. Ferguson, Y. Kubota, T. Gentile, Kenneth Francis Read, A. Jawahery, Jan M. Guida, Murdock Gilchriese, B. Gittelman, E. H. Thorndike, Sheldon Stone, M. Goldberg, N. B. Mistry, N. Horwitz, F. M. Pipkin, Paul Tipton, P. Haas, H. Van Hecke, Karl Berkelman, P. C. Stein, S. E. Csorna, K. Kinoshita, D. Peterson, M. Halling, R. Namjoshi, C. G. Trahern, D. Perticone, S. Holzner, S. Behrends, M. Ito, R. DeSalvo, G. C. Moneti, D. L. Hartill, C. Rosenfeld, D. Besson, R. S. Panvini, James C. Green, A. J. Sadoff, Ron Poling, M. Hempstead, and Xia Yi
Subjects: Physics, Particle physics, General Physics and Astronomy, B meson
Published: 1985

665. Measurement of the Branching Fraction of the Decayϒ(1S)→τ+τ−

Author: P. Skubic, A. Snyder, T. Gentile, N. B. Mistry, Joan A. Guida, J. Kandaswamy, L. Garren, F. Morrow, Ron Poling, J. Chauveau, E. Nordberg, M. Jibaly, E. H. Thorndike, Robert Stone, H. Van Hecke, V. Kistiakowsky, R. Galik, S. Holzner, S. Behrends, J. W. Dewire, Richard Wilson, F. M. Pipkin, D. L. Kreinick, R. Ehrlich, M. Hempstead, M. Halling, P. Lipari, H. Kagan, A. Chen, P. Avery, D. Peterson, F. Sannes, M. S. Alam, G. Rucinski, A. J. Sadoff, D. Weber, C. Bebek, G. Parkhurst, C. Rosenfeld, J. Hassard, A. Silverman, M. Ogg, R. G. Hicks, R. D. Kass, Joseph Izen, R. T. Giles, K. Chadwick, R. S. Panvini, T. Ferguson, A. Jawahery, R. Perchonok, C. G. Trahern, S. L. Olsen, Sheldon Stone, R. Plunkett, P. C. Stein, S. E. Csorna, K. Kinoshita, A. C. Melissinos, D. Herrup, D. Andrews, D. G. Cassel, M. D. Mestayer, M. Ito, M. Goldberg, D. L. Hartill, James C. Green, J. Rohlf, W. W. MacKay, P. Ganci, G. C. Moneti, Jan M. Guida, Y. Kubota, R. Wilcke, Murdock Gilchriese, B. Gittelman, Karl Berkelman, and N. Horwitz
Subjects: Physics, Particle physics, Muon, Meson, Branching fraction, Hadron, General Physics and Astronomy, Elementary particle, Astrophysics::Cosmology and Extragalactic Astrophysics, Fermion, Particle decay, High Energy Physics::Experiment, Astrophysics::Galaxy Astrophysics, Lepton
Abstract: The branching fraction for the decay of the UPSILON(1S) into tau pairs has been measured to be 3.4 +- 0.4 +- 0.4%. This result agrees with the previously measured branching ratio of the decay into muon pairs.
Published: 1983

666. Measurement of the isospin mass splitting Ξ+cΞ0c

Author: W. M. Yao, Themistocles Bowcock, J. D. Lewis, K. Sparks, C. R. Ng, A. M. Halling, M. Goldberg, G. C. Moneti, C. R. Sun, M. Worris, R. D. Kass, R. Ammar, D. Besson, N. Katayama, A. Jawahery, N. Horwitz, Marina Artuso, P. S. Drell, J. Whitmore, Thomas Ferguson, M. Procario, Xinchou Lou, L. Garren, Ian Shipsey, A. Silverman, J. Kandaswamy, C. Bebek, H. Worden, W. Y. Chen, Y. Kubota, Daniela Bortoletto, D. Peterson, Ha Lam, M. Sapper, J. W. Dewire, D. R. Johnson, R. Fulton, R. Poling, J. Alexander, F. Morrow, Sheldon Stone, E. I. Shibata, Paul Avery, R. Kowalewski, E. H. Thorndike, E. Nordberg, W. C. Li, T. Jensen, F. M. Pipkin, S. W. Gray, D. Xiao, C. H. Park, C. O'Grady, N. B. Mistry, Tomasz Skwarnicki, R. S. Galik, B. Gittelman, I. J. Kim, V. Sharma, J. Wolinski, R. Ehrlich, D. L. Hartill, M. Pisharody, Karl Berkelman, D. Perticone, P. Haas, James Mueller, Philip Baringer, M. D. Mestayer, D. G. Cassel, Elliott Cheu, Glen D. Crawford, H. Kagan, R. L. McIlwain, M. S. Alam, A. J. Sadoff, John Yelton, D. M. Coffman, B. K. Heltsley, D. L. Kreinick, J. Dominick, R. Namjoshi, S. Nandi, D. Riley, M. Hempstead, I. C. Brock, Richard Wilson, T. Letson, D. H. Miller, S. E. Csorna, and K. Kinoshita
Subjects: Physics, Nuclear and High Energy Physics, Molecular, Nuclear & Particles Physics, Atomic, Xi baryon, Baryon, Nuclear physics, Charmed baryons, Particle and Plasma Physics, Effective mass (solid-state physics), Pion, Isospin, Mass spectrum, Nuclear, Invariant mass, Atomic physics, Astronomical and Space Sciences, Mathematical Physics
Abstract: Using the CLEO detector, we present a measurement of the mass of the charged charmed strange baryon Ξ + c and its neutral counterpart the Ξ 0 c . The Ξ + c is observed through its decay to Ξ - π + π + , and its mass is measured to be (2467±3±4) MeV. The isospin mass splitting of the Ξ c system is found to be M ( Ξ + c )- M ( Ξ 0 c )=(−5±4±1)MeV.
Published: 1989

667. Limits on rare exclusive decays of B mesons

Author: D. G. Cassel, A. M. Halling, R. DeSalvo, P. Lubrano, V. Tanikella, R. Poling, B. K. Heltsley, Jan M. Guida, Kenneth Francis Read, R. S. Panvini, D. Riley, L. Garren, R. Holmes, D. L. Kreinick, James Mueller, R. Kowalewski, C. Bebek, G. B. Word, Alice Bean, E. H. Thorndike, A. Jawahery, F. Morrow, F. M. Pipkin, A. Chen, T. J. V. Bowcock, V. Sharma, R. Ehrlich, I. C. Brock, N. B. Mistry, P. Haas, G.J. Bobbink, Yuichi Kubota, S. E. Csorna, D. Xiao, K. Kinoshita, R. T. Giles, C. Rippich, R. S. Galik, N. Katayama, Xia Yi, C. R. Sun, R. Namjoshi, John Hassard, R. D. Kass, S. W. Gray, M. D. Mestayer, D. Z. Besson, M. Goldberg, Joan A. Guida, J. Kandaswamy, G. C. Moneti, E. Nordberg, D. Perticone, S. Holzner, S. Behrends, Thomas Ferguson, E. Blucher, D. Peterson, M. Ito, T. Jensen, Richard Wilson, M. S. Alam, Daniela Bortoletto, Murdock Gilchriese, Sheldon Stone, Paul Avery, M. Ogg, B. Gittelman, Hans J. Vogel, J. W. Dewire, I. J. Kim, T. Gentile, A. J. Sadoff, J. Wolinski, M. Pisharody, Karl Berkelman, D. L. Hartill, N. Horwitz, M. Hempstead, Paul Tipton, A. Silverman, T. Copie, A. Engler, R. W. Kraemer, and Harris Kagan
Subjects: Physics, Semileptonic decay, Nuclear and High Energy Physics, Particle physics, Meson, Branching fraction, High Energy Physics::Phenomenology, Hadron, Electroweak interaction, Elementary particle, Nuclear physics, Particle decay, High Energy Physics::Experiment, B meson
Abstract: We have set upper limits for rare exclusive decays of B mesons arising from higher order processes in the standard model of electroweak interactions. Such decays may occur via “penguin diagrams” in B decay. We also set an upper limit on a lepton-number-violating decay mode of the neutral B meson.
Published: 1987

668. Inclusive ChargedD*Production ine+e−Annihilations atW=10.4GeV

Author: H. Kagan, C. Rosenfeld, Robert Stone, A. J. Sadoff, R. Galik, J. Kandaswamy, Y. Kubota, J. Chauveau, T. Gentile, J. W. Dewire, R. Perchonok, A. Fridman, Ron Poling, S. Holzner, P. Skubic, R. Cabenda, G. Parkhurst, D. Weber, M. Hempstead, N. B. Mistry, P. Lipari, A. Snyder, F. Morrow, R. Plunkett, R. S. Panvini, R. Ehrlich, J. Hassard, A. Silverman, A. Chen, P. Avery, R. D. Kass, D. Herrup, V. Kistiakowsky, P. C. Stein, S. E. Csorna, R. G. Hicks, F. Sannes, M. S. Alam, D. G. Cassell, E. Nordberg, G. Rucinski, M. Jibaly, H. Van Hecke, D. L. Kreinick, S. L. Olsen, J. Rohlf, M. D. Mestayer, C. J. Bebek, M. Goldberg, G. C. Moneti, M. Ogg, Sheldon Stone, E. H. Thorndike, W. W. MacKay, F. M. Pipkin, P. Ganci, A. C. Melissinos, R. Wilcke, H. Jawahery, Murdock Gilchriese, B. Gittelman, Joseph Izen, M. Ito, Richard Wilson, D. L. Hartill, James C. Green, D. Andrews, K. Chadwick, T. Ferguson, and N. Horwitz
Subjects: Physics, Nuclear physics, Particle physics, Particle decay, Annihilation, Meson, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Electron–positron annihilation, Hadron, General Physics and Astronomy, Elementary particle, Boson, Charm quark
Abstract: A measurement is presented of inclusive charged D* (2010) production from nonresonant e/sup +/e/sup -/ annihilation in the center-of-mass energy (W) range 10.2 GeV..D/sup 0/..pi../sup +/..-->..K/sup -/..pi../sup +/..pi../sup +/ and the charge conjugate mode. It is found that 40 +- 7 +- 13% of the charm quarks from the process e/sup +/e/sup -/..-->..cc-bar result in D* mesons with z>0.7 (z = 2E/W, where E is the D* energy).
Published: 1982

669. Inclusiveφproduction inB-meson decay

Author: I. J. Kim, T. Copie, Ron Poling, R. S. Galik, Y. Kubota, Jan M. Guida, M. Goldberg, D. Perticone, S. Holzner, S. Behrends, H. Kagan, C. Bebek, R. T. Giles, P. Skubic, Themistocles Bowcock, D. G. Cassel, A. Chen, E. H. Thorndike, A. Jawahery, H. Van Hecke, F. Sannes, P. Avery, C. G. Trahern, P. C. Stein, R. Kowalewski, F. M. Pipkin, P. Haas, D. L. Kreinick, S. E. Csorna, Daniela Bortoletto, T. Jensen, A. J. Sadoff, M. Pisharody, Thomas Ferguson, E. Blucher, Sheldon Stone, M. Ito, Karl Berkelman, K. Kinoshita, Murdock Gilchriese, R. Namjoshi, J. Hassard, A. Silverman, Paul Tipton, J. W. Dewire, N. B. Mistry, C. Rosenfeld, S. W. Gray, N. Horwitz, L. Garren, N. Katayama, B. Gittelman, R. DeSalvo, A. M. Halling, D. Riley, G. B. Word, G. C. Moneti, P. Lubrano, Robert Stone, Joan A. Guida, J. Kandaswamy, M. Ogg, D. Besson, R. S. Panvini, M. Hempstead, Alice Bean, Chih-Ree Sun, R. D. Kass, M. D. Mestayer, Richard Wilson, E. Nordberg, F. Morrow, D. Peterson, M. S. Alam, T. Gentile, V. Tanikella, Xia Yi, R. Ehrlich, James Mueller, D. L. Hartill, James C. Green, B. K. Heltsley, and Kenneth Francis Read
Subjects: Physics, Particle physics, Annihilation, Meson, Branching fraction, Hadron, General Physics and Astronomy, Elementary particle, Nuclear physics, Particle decay, Pair production, High Energy Physics::Experiment, B meson, Astrophysics::Earth and Planetary Astrophysics
Abstract: We have measured the inclusive branching ratio for B..-->..phiX to be 0.023 +- 0.006 +- 0.005. The momentum distribution of the phi mesons is compared with that expected from the cascade decays B..-->..F..-->..phi and B..-->..D..-->..phi. .AE
Published: 1986

670. Decay ofBMesons into Charged and Neutral Kaons

Author: J. Haggerty, N. B. Mistry, A. Snyder, C. Rosenfeld, D. Andrews, R. S. Panvini, G. C. Moneti, R. Plunkett, N. Horwitz, Harris Kagan, D. Herrup, R. G. Hicks, D. L. Hartill, C. J. Bebek, Ron Poling, J. Rohlf, J. W. Dewire, H. Kooy, W. W. MacKay, James C. Green, Richard Talman, P. Ganci, D. G. Cassel, R. H. Siemann, W. A. Loomis, R. Cabenda, A. C. Melissinos, G. Rucinski, P. C. Stein, S. E. Csorna, S. L. Olsen, M. Goldberg, Robert Stone, M. S. Alam, T. Gentile, C. Longuemare, R. Wilcke, E. H. Thorndike, M. Hempstead, A. Brody, Murdock Gilchriese, Karl Berkelman, B. Gittelman, F. M. Pipkin, Sheldon Stone, M. Herzlinger, K. Chadwick, P. Pistilli, T. Ferguson, J. Mueller, R. D. Kass, A. Chen, F. Sannes, A. J. Sadoff, W. Tanenbaum, P. Avery, D. L. Kreinick, E. Nordberg, R. Perchonok, P. Skubic, D. Weber, A. Silverman, Joseph Izen, J. Kandaswamy, Richard Wilson, F. Morrow, R. Ehrlich, A. Fridman, K. A. Shinsky, and J. Chauveau
Subjects: Physics, Nuclear physics, Particle decay, Particle physics, Annihilation, Meson, Electron–positron annihilation, Hadron, General Physics and Astronomy, Context (language use), B meson, Elementary particle
Abstract: Data on inclusive kaon production in e/sup +/e/sup -/ annihilations at energies in the vicinity of the UPSILON(4S) resonance are presented. A clear excess of kaons is observed on the UPSILON(4S) compared to the continuum. Under the assumption that the UPSILON(4S) decays into BB-bar, a total of 3.38 +- 0.34 +- 0.68 kaons per UPSILON(4S) decay is found. In the context of the standard B-decay model this leads to a value for (b..-->..c)/(b..-->..all) of 1.09 +- 0.33 +- 0.13.
Published: 1982

671. Observation of New Structure in thee+e−Cross Section above theϒ(4S)

Author: R. D. Kass, C. Bebek, G. Parkhurst, A. Jawahery, T. Jensen, P. Lipari, M. S. Alam, Joan A. Guida, D. L. Kreinick, J. Kandaswamy, P. Skubic, M. Ito, Robert Stone, D. G. Cassel, Murdock Gilchriese, R. T. Giles, L. Garren, R. DeSalvo, D. Peterson, Sheldon Stone, B. Gittelman, D. Perticone, S. Holzner, S. Behrends, K. Chadwick, Richard Wilson, James C. Green, T. Gentile, R. Ehrlich, Xu Kezun, J. W. Dewire, H. Van Hecke, T. Ferguson, P. Haas, C. Rosenfeld, Karl Berkelman, R. S. Panvini, A. Chen, Kenneth Francis Read, M. Ogg, J. Hassard, N. B. Mistry, Jan M. Guida, A. Silverman, F. Sannes, M. D. Mestayer, Xia Yi, A. Snyder, Y. Kubota, W. W. MacKay, P. Avery, D. Besson, N. Horwitz, T. Copie, A. C. Melissinos, M. Goldberg, G. C. Moneti, Paul Tipton, E. Nordberg, R. Namjoshi, M. Halling, C. G. Trahern, F. Morrow, P. C. Stein, S. E. Csorna, K. Kinoshita, S. L. Olsen, D. L. Hartill, Ron Poling, E. H. Thorndike, F. M. Pipkin, R. S. Galik, M. Hempstead, H. Kagan, and A. J. Sadoff
Subjects: Nuclear physics, Physics, Particle decay, Particle physics, Annihilation, Meson, Electron–positron annihilation, Hadron, General Physics and Astronomy, Multiplicity (mathematics), Elementary particle, Lepton
Abstract: Measurements of the ${e}^{+}{e}^{\ensuremath{-}}$ cross section above $B\overline{B}$ threshold are reported. Structures are observed which could be the $\ensuremath{\Upsilon}(5S)$ and $\ensuremath{\Upsilon}(6S)$ resonances. The masses and widths are given and compared with various potential-model predictions. Average charged multiplicities and inclusive lepton yields are also presented.
Published: 1985

672. Evidence for New-Flavor Production at theϒ(4S)

Author: P. C. Stein, S. E. Csorna, C. Longuemare, Robert Stone, D. Andrews, J. Kandaswamy, P. Skubic, C. Rosenfeld, K. A. Shinsky, Karl Berkelman, R. Plunkett, S. L. Olsen, D. L. Bridges, B. Gittleman, Ron Poling, E. H. Thorndike, J. W. Dewire, F. M. Pipkin, H. Kooy, M. Herzlinger, D. Herrup, D. L. Hartill, R. S. Panvini, M. S. Alam, D. Weber, D. Potter, G. Rucinski, R. Ehrlich, J. Haggerty, G. Warren, C. J. Bebek, A. Silverman, P. Lariccia, K. Chadwick, A. J. Sadoff, R. D. Kass, R. H. Siemann, A. C. Melissinos, T. Ferguson, R. Cabenda, R. Perchonok, N. B. Mistry, W. Tanenbaum, G. C. Moneti, Sheldon Stone, D. L. Kreinick, Harris Kagan, J. Rohlf, D. Bechis, M. Goldberg, E. Nordberg, W. A. Loomis, Richard Talman, H. G. Thonemann, J. S. Poucher, P. Ganci, D. G. Cassel, Murdock Gilchriese, T. Gentile, J. Mueller, A. Brody, Richard Wilson, A. Chen, F. Sannes, F. Lobkowicz, Joseph Izen, and N. Horwitz
Subjects: Nuclear physics, Physics, Particle physics, Particle decay, Annihilation, Meson, Branching fraction, Electron–positron annihilation, Hadron, General Physics and Astronomy, High Energy Physics::Experiment, B meson, Elementary particle
Abstract: An enhancement has been observed in the inclusive cross section for direct single electrons produced in e/sup +/e/sup -/ annihilation at the UPSILON(4S). This is interpreted as evidence for a new weakly decaying particle, the B meson. A branching ratio for B..-->..Xe..nu.. of (13 +- 3( +- 3))% is inferred, where the first set of errors is statistical and the estimated systematic error is enclosed in parentheses.
Published: 1981

673. Measurements of cross sections and charge asymmetries for ee→ττ ee→μμ from 52 to 57 GeV

Author: E. H. Thorndike, T. Mori, R. Childers, Y. Sakai, Y. K. Li, W. Metcalf, S. Sakamoto, K. Hanaoka, C. W. Darden, T. Nozaki, R. Coombes, Z. P. Mao, A. Sill, H. Miyata, R. Poling, S. K. Kim, K. Ohta, Winston Ko, H. Kozuka, S. Trentalange, F. Sannes, Yoshimasa Kurihara, S. Kobayashi, M. H. Lee, Tsunehiko Omori, H. Harada, H. W. Zheng, Y. H. Ho, James C. Green, T. Sasaki, M. Frautschi, F. Naito, Kazumasa Miyano, K. Sparks, Hyunyong Kim, E. H. Low, A. Murakami, S. Matsumoto, R. Imlay, L. E. Piilonen, H. Asakura, K. Eguchi, T. Takeda, S. Wilson, J. Li, Y. Fujii, Steve Schnetzer, P. N. Kirk, Y. C. Zhu, Sarah Catherine Eno, C. G. Trahern, R. L. Lander, T. Kumita, Yusuke Higashi, Susumu Terada, H. Kagan, S. L. Olsen, C. A. Fry, Y. Sugimoto, A. Maki, S. Chakrabarti, H. Itoh, Y. Yamashita, R. Tanaka, H. Yokota, R. L. Malchow, Yongsun Kim, M. Ogawa, A. T.M. Wang, Rr Mcneil, R. D. Kass, N. M. Shaw, Y. Ishi, G. N. Kim, C. P. Cheng, S. Igarashi, Y. Yan, E. J. Kim, Y. T. Xu, M. C.S. Williams, P. Perez, F. Kajino, Dong-Chul Son, Y. Takaiwa, J. R. Smith, A. Bodek, Kiyosumi Tsuchiya, C. Rosenfeld, K. Gotow, D. Blanis, Kazuo Abe, D. Zimmerman, Kaori Maeshima, K. Toyoshima, H. Murata, S. Lusin, J. S. Kang, K. Ueno, I. H. Park, T. Ishizuka, S. S. Myung, A. Bacala, Robert Stone, A. Abashian, Hiroyuki Sagawa, H. S. Budd, and R. Chiba
Subjects: Physics, Coupling constant, Nuclear and High Energy Physics, Charge (physics), Atomic physics, Standard Model
Abstract: Measurements of the differential cross sections for e + e − →μ + μ − and e + e − →τ + τ − at values of s from 52 to 57 GeV are reported. The forward-backward asymmetries and the total cross sections for these reactions are found to be in agreement with predictions of the standard model of the electro-weak interactions. These measurements are used to extract values of the weak coupling constant g v e g v l and g A e g A l , where l = μ or τ .
Published: 1989

674. Search for the production of fractionally charged particles ine+e−annihilations ats=10.5GeV

Author: D. Xiao, F. Morrow, S. E. Csorna, K. Kinoshita, W. C. Li, T. Jensen, M. Goldberg, D. G. Cassel, M. Procario, Ian Shipsey, Ian Brock, A. M. Halling, D. Riley, R. Kowalewski, M. Worris, T. J. V. Bowcock, B. Gittelman, E. H. Thorndike, L. Garren, Ha Lam, Sheldon Stone, T. Letson, D. H. Miller, F. M. Pipkin, I. J. Kim, C. R. Ng, Paul Avery, A. Silverman, M. Hempstead, R. S. Galik, Xinchou Lou, C. O'Grady, C. Bebek, C. H. Park, D. L. Hartill, Marina Artuso, W. Y. Chen, Y. Kubota, R. Poling, Tomasz Skwarnicki, S. W. Gray, M. Pisharody, M. Sapper, N. B. Mistry, Karl Berkelman, D. R. Johnson, Thomas Ferguson, G. C. Moneti, D. Perticone, M. D. Mestayer, J. D. Lewis, S. Nandi, J. Wolinski, C. R. Sun, R. D. Kass, J. Kandaswamy, R. Fulton, P. Haas, James Mueller, Philip Baringer, Daniela Bortoletto, E. I. Shibata, J. W. Dewire, E. Nordberg, D. Peterson, V. Sharma, R. Ehrlich, N. Katayama, J. Whitmore, H. Worden, Philip Daniel Mauskopf, A. Jawahery, D. Besson, N. Horwitz, H. Kagan, J. Byrd, A. J. Sadoff, D. L. Kreinick, J. Dominick, John Yelton, Elliott Cheu, Glen D. Crawford, D. M. Coffman, B. K. Heltsley, W. M. Yao, R. L. McIlwain, M. S. Alam, Persis S. Drell, Richard Wilson, R. Namjoshi, and P. Lubrano
Subjects: Nuclear physics, Physics, Particle physics, Annihilation, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Charged particle
Abstract: We report the results of a search for particles with electric charge /ital Q/=(2/3)/ital e/ produced in /ital e//sup +/e/sup /minus// annihilations at/ital W/=10.5 GeV. The ratio of the cross section for the inclusiveproduction of fractionally charged particles (/ital q/) to the dimuon pointcross section,/ital R//sub /ital q//=/sigma/(e/sup +/e/sup /minus///r arrow/qX)//sigma/(/ital e//sup +/minus///r arrow//mu//sup +//mu//sup /minus//), is found to have an upper limitat a 90%confidence level of 1.0/times/10/sup /minus/4/ for masses less than3.5 GeV//ital c//sup 2/.
Published: 1989

675. Branching ratios ofBmesons toK+,K−, andK0/K¯0

Author: A. M. Halling, R. Ehrlich, P. Thoma, Paul Tipton, C. Rippich, D. G. Cassel, V. Tanikella, T. Jensen, E. H. Thorndike, F. M. Pipkin, F. Morrow, R. Poling, Thomas Ferguson, B. K. Heltsley, T. J. V. Bowcock, D. Xiao, A. Silverman, Kenneth Francis Read, D. Z. Besson, R. S. Panvini, M. Pisharody, D. L. Kreinick, C. Bebek, Karl Berkelman, G. B. Word, P. Haas, G.J. Bobbink, M. Ito, T. Copie, R. S. Galik, L. Garren, A. Engler, Jan M. Guida, James Mueller, R. Kowalewski, Hans J. Vogel, A. Jawahery, M. D. Mestayer, E. Blucher, Murdock Gilchriese, R. Namjoshi, N. B. Mistry, M. Ogg, B. Gittelman, S. W. Gray, A. Chen, Joan A. Guida, J. Kandaswamy, I. J. Kim, T. Gentile, Daniela Bortoletto, M. S. Alam, E. Nordberg, D. Peterson, N. Horwitz, M. Goldberg, G. C. Moneti, Vivek Sharma, C. R. Sun, R. D. Kass, D. Perticone, S. E. Csorna, S. Holzner, S. Behrends, K. Kinoshita, P. Lubrano, R. Holmes, H. Kagan, Alice Bean, Sheldon Stone, Paul Avery, A. J. Sadoff, D. L. Hartill, M. Hempstead, D. Riley, I. C. Brock, Yuichi Kubota, Richard Wilson, J. W. Dewire, J. Wolinski, R. T. Giles, N. Katayama, R. W. Kraemer, and R. Desalvo
Subjects: Combinatorics, Physics, General Physics and Astronomy, B meson
Abstract: By studying lepton-kaon angular correlations in \ensuremath{\Upsilon}(4S) decays, we have measured the branching ratios for B\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}${K}^{+}$X, B\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}${K}^{\mathrm{\ensuremath{-}}}$X, B\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}${K}^{0}$/K${\ifmmode\bar\else\textasciimacron\fi{}}^{0}$X, B\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}${l}^{\mathrm{\ensuremath{-}}}$${K}^{+}$X, B\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}${l}^{\mathrm{\ensuremath{-}}}$${K}^{\mathrm{\ensuremath{-}}}$X, and B\ifmmode\bar\else\textasciimacron\fi{}\ensuremath{\rightarrow}${l}^{\mathrm{\ensuremath{-}}}$${K}^{0}$/K${\ifmmode\bar\else\textasciimacron\fi{}}^{0}$X. Their values imply that (b\ensuremath{\rightarrow}c)/(b\ensuremath{\rightarrow}all)=0.98\ifmmode\pm\else\textpm\fi{}0.16\ifmmode\pm\else\textpm\fi{}0.12.
Published: 1987

676. Upper Limit on Flavor-Changing Neutral-Current Decays of thebQuark

Author: D. L. Hartill, E. H. Thorndike, D. Weber, J. Hassard, A. Silverman, F. M. Pipkin, M. S. Alam, P. Haas, Murdock Gilchriese, Paul Tipton, T. Jensen, C. Bebek, G. Parkhurst, C. G. Trahern, James C. Green, B. Gittelman, P. C. Stein, Joan A. Guida, J. Kandaswamy, M. D. Mestayer, S. E. Csorna, P. Avery, K. Chadwick, M. Goldberg, D. G. Cassel, H. Van Hecke, Richard Wilson, P. Lipari, K. Kinoshita, S. Holzner, S. Behrends, D. Peterson, T. Ferguson, S. L. Olsen, W. W. MacKay, Karl Berkelman, A. Jawahery, M. Ito, E. Nordberg, M. E. Hejazifar, P. Skubic, A. Snyder, T. Gentile, G. C. Moneti, Robert Stone, R. Namjoshi, J. W. Dewire, N. Horwitz, Harris Kagan, D. L. Kreinick, R. S. Galik, Y. Kubota, R. T. Giles, A. Chen, F. Sannes, Sheldon Stone, N. B. Mistry, R. D. Kass, Jan M. Guida, R. Wilcke, Ron Poling, R. G. Hicks, A. C. Melissinos, M. Hempstead, J. Chauveau, M. Halling, A. J. Sadoff, C. Rosenfeld, M. Ogg, L. Garren, F. Morrow, D. Besson, R. S. Panvini, R. Ehrlich, and Xia Yi
Subjects: Quark, Semileptonic decay, Nuclear physics, Physics, Particle physics, Meson, Branching fraction, Flavor-changing neutral current, Quark model, General Physics and Astronomy, B meson, Bottom quark
Abstract: We have searched for flavor-changing neutral-current weak decays of the b quark and find R/sub B/(b..-->..l/sup +/l/sup -/X)
Published: 1984

677. DecayD0→φK¯0

Author: L. Garren, P. Lubrano, A. Jawahery, D. Besson, Alice Bean, R. DeSalvo, Joan A. Guida, J. Kandaswamy, M. Ito, A. M. Halling, E. Nordberg, R. T. Giles, Robert Stone, Themistocles Bowcock, E. H. Thorndike, C. Rippich, Murdock Gilchriese, A. Chen, D. Peterson, C. R. Sun, F. Sannes, F. M. Pipkin, T. Jensen, R. S. Galik, R. Namjoshi, S. W. Gray, R. B. Sutton, V. Tanikella, C. Bebek, P. C. Stein, S. E. Csorna, K. Kinoshita, R. W. Kraemer, J. Hassard, A. Silverman, Daniela Bortoletto, J. W. Dewire, B. Gittelman, I. J. Kim, M. S. Alam, R. S. Panvini, R. D. Kass, Sheldon Stone, R. Kowalewski, N. B. Mistry, M. Pisharody, Karl Berkelman, D. Perticone, S. Holzner, S. Behrends, James C. Green, Paul Avery, E. Blucher, Richard Wilson, T. Copie, M. D. Mestayer, D. L. Kreinick, D. G. Cassel, N. Horwitz, Y. Kubota, Hans J. Vogel, D. Riley, A. Engler, F. Morrow, Paul Tipton, T. Gentile, N. Katayama, M. Hempstead, I. C. Brock, P. Haas, C. Rosenfeld, Thomas Ferguson, B. K. Heltsley, Kenneth Francis Read, Jan M. Guida, D. L. Hartill, Ron Poling, H. Kagan, A. J. Sadoff, R. Ehrlich, Xia Yi, G. J. Bobbink, G. B. Word, James Mueller, M. Ogg, M. Goldberg, and G. C. Moneti
Subjects: General Physics and Astronomy
Published: 1986

678. Experimental Mass Limit for a Fourth-Generation Sequential Lepton frome+e−Annihilations ats=56GeV

Author: H. Asakura, S. Trentalange, R. Chiba, Y. Sugimoto, R. Tanaka, E. H. Thorndike, Z. P. Mao, Hiroyuki Sagawa, H. Harada, Hj Kim, Rr Mcneil, T. Nozaki, Yk Kim, A. Bacala, H. Miyata, A. Bodek, R. L. Lander, H. Kagan, Y. Yan, W. Metcalf, K. Gotow, S. Sakamoto, Robert Stone, F. Kajino, Yasuo Higashi, H. S. Budd, S. Wilson, S. K. Kim, S. S. Myung, R. Coombes, K. Toyoshima, H. Kozuka, C. G. Trahern, H. Itoh, H. Murata, Y. C. Zhu, S. L. Olsen, F. Sannes, T. Kumita, D. Zimmerman, K. Eguchi, I. H. Park, T. Sasaki, H. W. Zheng, S. Chakrabarti, Tsunehiko Omori, R. L. Malchow, R. D. Kass, G. N. Kim, T. Takeda, T. Mori, A. Sill, Y. Ishi, T. Ishizuka, K. Ohta, Winston Ko, C. A. Fry, S. Kobayashi, Y. H. Ho, L. E. Piilonen, D. Blanis, A. Abashian, S. Lusin, E. J. Kim, Smith, Y. T. Xu, J. S. Kang, Y. Fujii, C. Darden, Steve Schnetzer, K. Ueno, A. Maki, M. H. Lee, Kazuo Abe, Y. Sakai, Kaori Maeshima, S. Matsumoto, C. P. Cheng, M. Ogawa, Dong-Chul Son, P. Perez, K. Miyano, Kiyosumi Tsuchiya, Yoshimasa Kurihara, E. H. Low, A. Murakami, N. M. Shaw, Y. Takaiwa, M. C.S. Williams, P. N. Kirk, Y. Yamashita, K. Hanaoka, R. Poling, James C. Green, F. Naito, K. Sparks, M. Frautschi, Sarah Catherine Eno, Susumu Terada, H. Yokota, S. Igarashi, R. Imlay, R. Childers, and C. Rosenfeld
Subjects: Physics, Particle physics, Annihilation, High Energy Physics::Phenomenology, General Physics and Astronomy, Elementary particle, Fermion, Spectral line, Nuclear physics, Pair production, High Energy Physics::Experiment, Limit (mathematics), Nuclear Experiment, Event (particle physics), Lepton
Abstract: A search for pair production for fourth-generation sequential leptons in e/sup +/e/sup -/ annihilation at a center-of-mass energy ..sqrt..s = 56 GeV is reported. Event topologies corresponding to the cases where one particle decays leptonically while the other decays hadronically as well as those where both particles decay hadronically were explored. We set a 95%-confidence-level lower limit of 27.6 GeV/c/sup 2/ for the mass of a fourth-generation lepton.
Published: 1988

679. Measurement of the D0, D+ and Ds+ meson lifetimes at √s = 10.58 GeV

Author: L. Garren, M. S. Alam, G. B. Word, D. Riley, A. M. Halling, D. Xiao, C. Bebek, D. L. Kreinick, D. Besson, T. Jensen, F. Morrow, A. Jawahery, S. E. Csorna, M. Hempstead, E. H. Thorndike, D. Perticone, S. Holzner, S. Behrends, G. J. Bobbink, F. M. Pipkin, K. Kinoshita, Hans J. Vogel, I. C. Brock, H. Kagan, M. Goldberg, Themistocles Bowcock, N. Katayama, V. Sharma, G. C. Moneti, M. D. Mestayer, A. Chen, R. Kowalewski, R. Ehrlich, M. Ito, R. S. Galik, R. S. Panvini, Daniela Bortoletto, R. DeSalvo, T. Gentile, J. W. Dewire, B. K. Heltsley, C. Rippich, Kenneth Francis Read, Sheldon Stone, Paul Avery, S. W. Gray, N. B. Mistry, A. J. Sadoff, Paul Tipton, P. Haas, M. Ogg, Richard Wilson, E. Nordberg, D. L. Hartill, Ron Poling, V. Tanikella, James Mueller, Joan A. Guida, J. Kandaswamy, C. R. Sun, D. Peterson, R. D. Kass, Xia Yi, J. Wolinski, R. W. Kraemer, Jan M. Guida, J. Hassard, A. Silverman, N. Horwitz, T. Copie, A. Engler, Thomas Ferguson, Y. Kubota, M. Pisharody, Karl Berkelman, Murdock Gilchriese, D. G. Cassel, B. Gittelman, I. J. Kim, E. Blucher, R. Namjoshi, P. Lubrano, R. Holmes, Alice Bean, and R. T. Giles
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Antiparticle, Particle decay, Annihilation, Pion, Pair production, Meson, Antimatter, Hadron
Abstract: We have measured the lifetimes of the D0, D+ and Ds+ mesons with data from the CLEO detector. We find τD0 = (5.0 ± 0.7 ± 0.4) × 10−13s, τD+ = (11.4 ± 1.6 ± 0.7) × 10−13s and τDs+ = (4.7 ± 2.2 ± 0.5) × 10−13s, giving lifetime ratios τD+/τD0 = 2.3 ± 0.5 and τDs+/τD0 = 0.9 ± 0.5.
Published: 1987

680. Observation of Radiative Decays of theϒ(2S)

Author: H. Kagan, F. Morrow, D. Weber, J. Hassard, A. Silverman, R. D. Kass, A. Chen, F. Sannes, C. Bebek, G. Parkhurst, A. J. Sadoff, Richard Wilson, L. Garren, W. W. MacKay, C. Rosenfeld, Y. Kubota, R. Wilcke, R. Ehrlich, P. Skubic, T. Jensen, M. S. Alam, Jan M. Guida, H. Van Hecke, Robert Stone, Xia Yi, R. T. Giles, D. Besson, Murdock Gilchriese, R. Namjoshi, D. L. Hartill, E. H. Thorndike, Ron Poling, B. Gittelman, T. Gentile, A. Jawahery, R. G. Hicks, F. M. Pipkin, J. Chauveau, P. Lipari, D. G. Cassel, D. Peterson, D. L. Kreinick, S. Holzner, S. Behrends, M. Halling, C. G. Trahern, M. Hempstead, Karl Berkelman, M. Ogg, M. D. Mestayer, M. Ito, R. S. Panvini, K. Chadwick, Paul Tipton, Joan A. Guida, P. Avery, J. Kandaswamy, R. S. Galik, N. Horwitz, S. L. Olsen, M. Goldberg, T. Ferguson, G. C. Moneti, James C. Green, A. C. Melissinos, E. Nordberg, A. Snyder, P. Haas, N. B. Mistry, Sheldon Stone, P. C. Stein, S. E. Csorna, J. W. Dewire, and K. Kinoshita
Subjects: Physics, Nuclear physics, Massless particle, Photon, Meson, Branching fraction, Hadron, Radiative transfer, General Physics and Astronomy, High Energy Physics::Experiment, Elementary particle, Atomic physics, Spectral line
Abstract: Evidence is reported from the CLEO detector for the chi/sub b/(1P) states from radiative decays of the UPSILON(2S). Photons are detected by pair conversion in the beam pipe or a lead radiator, and the pair momenta are measured in the drift chamber. Two photon lines are well resolved, with energies 109.5 +- 0.7 +- 1 and 129.0 +- 0.8 +- 1 MeV.
Published: 1984

681. Inelastic photoproduction ofωandρ±mesons

Author: J. Harvey, J. Abramson, C. A. Nelson, E. N. May, M. Singer, D. E. Andrews, M. E. Nordberg, E. H. Thorndike, and F. Lobkowicz
Subjects: Nuclear physics, Baryon, Physics, Pion, Meson, Deuterium, Scattering, Hadron, High Energy Physics::Experiment, Elementary particle, Nuclear Experiment, Omega
Abstract: We report measurements of inelastic photoproduction of ..omega.. and rho/sup + -/mesons from hydrogen and deuterium at incident photon energies in the range 7.5-10.5 GeV. For ..omega delta.. and rho/sup -/..delta../sup + +/ production differential cross sections dsigma/dt' and spin density matrices are presented. For higher missing masses the cross sections dsigma/dM/sub X//sup 2/ and invariant structure functions F(x) are also given. The data are compared to a one-pion-exchange model. We conclude that pion exchange is dominant for inelastic ..omega.. photoproduction, but unimportant for rho/sup + -/during annealing, even though the resistively determined transport scattering time increased by a factor of 7.8 during annealing. Orbital depairing was found to follow a relation zeta = zeta/sub 0/ + ..cap alpha..H/sup 2/ and to increase with annealing in a manner expected from the change in mean free path determined from measurements of H/sub cnu/.
Published: 1978

682. Observation of Baryons inB-Meson Decay

Author: G. Parkhurst, Richard Wilson, D. G. Cassel, M. S. Alam, C. Rosenfeld, A. Chen, Harris Kagan, E. H. Thorndike, D. L. Kreinick, F. Sannes, J. W. Dewire, F. M. Pipkin, J. Chauveau, Y. Kubota, Robert Stone, S. Holzner, S. Behrends, W. W. MacKay, M. Halling, P. Ganci, R. Wilcke, Jan M. Guida, D. Herrup, Murdock Gilchriese, B. Gittelman, Sheldon Stone, Ron Poling, Paul Tipton, P. Lipari, T. Gentile, R. T. Giles, D. Peterson, G. C. Moneti, L. Garren, P. Skubic, M. Hempstead, M. D. Mestayer, M. Goldberg, V. Kistiakowsky, R. S. Panvini, R. Ehrlich, N. B. Mistry, P. Avery, D. Weber, A. Snyder, A. J. Sadoff, Xia Yi, S. L. Olsen, E. Nordberg, H. Van Hecke, J. Hassard, A. Silverman, R. D. Kass, R. Plunkett, A. Jawahery, Joan A. Guida, R. Perchonok, J. Kandaswamy, M. Ito, K. Chadwick, M. Ogg, T. Ferguson, F. Morrow, R. Galik, D. L. Hartill, James C. Green, R. G. Hicks, A. C. Melissinos, C. G. Trahern, P. C. Stein, S. E. Csorna, K. Kinoshita, G. Rucinski, N. Horwitz, Karl Berkelman, and C. Bebek
Subjects: Physics, Quark, Particle physics, Meson, Branching fraction, Nuclear Theory, Hadron, General Physics and Astronomy, Nuclear physics, Particle decay, Physics::Accelerator Physics, High Energy Physics::Experiment, B meson, Cornell Electron Storage Ring, Nuclear Experiment, Nucleon
Abstract: In a sample of B mesons from the decay of the UPSILON(4S) produced in e/sup +/e/sup -/ collisions at the Cornell Electron Storage Ring, inclusive protons, antiprotons, lambdas and antilambdas have been observed. Lower limits to the B-to-baryon branching ratios are derived.
Published: 1983

683. Proton-Deuteron Elastic Triple Scattering at 140 MeV

Author: J. Lefrancois, E. H. Thorndike, and R. A. Hoffman
Subjects: Nuclear physics, Physics, Elastic scattering, Scattering amplitude, Amplitude, Proton, Scattering, Nuclear Theory, Scattering parameters, General Physics and Astronomy, Impulse (physics), Nuclear Experiment, Nucleon
Abstract: Measurements of the proton-deuteron elastic triple scattering parameters R and A have been made at the indicated laboratory energies. Formulas, based on the impulse approximation, are given relating various elastic scattering parameters to nucleon-nucleon scattering amplitudes. The expressions were evaluated using nucleonnucleon amplitudes of Breit and collaborators, and of Gammel and Thaler, and were compared with the R and A measurements, and with cross-section and polarization measurements of Postma and Wilson. The fit for solutions YLAN 3 and 3M is adequate for angles less than 45 degree lab. (Author)
Published: 1963

684. Photoproduction ofωMesons from Complex Nuclei

Author: E. H. Thorndike, A. A. Wehmann, F. Lobkowicz, H. J. Behrend, and M. E. Nordberg
Subjects: Physics, General Physics and Astronomy
Published: 1970

685. Quasifree Proton-Neutron and Proton-Proton Scattering at 140 MeV

Author: E. H. Thorndike, R. A. Hoffman, Richard Wilson, and J. Lefrancois
Subjects: Nuclear physics, Physics, Deuterium, Proton, Scattering, Proton scattering, General Physics and Astronomy, Neutron, Neutron scattering
Published: 1963

686. Photoproduction ofωMesons from Hydrogen and Deuterium

Author: E. H. Thorndike, C. K. Lee, F. Lobkowicz, H. J. Behrend, M. E. Nordberg, and A. A. Wehmann
Subjects: Physics, Nuclear physics, Particle physics, Meson, Deuterium, Hydrogen, chemistry, General Physics and Astronomy, chemistry.chemical_element, Omega
Published: 1971

687. Test of Parity Conservation inN−NScattering

Author: E. H. Thorndike and E. J. Gucker
Subjects: Nuclear physics, Physics, Particle physics, Conservation law, Scattering, Parity (physics), Nucleon
Published: 1971

688. Protron-Proton Bremsstrahlung at 204 MeV with a Polarized Beam

Author: E. H. Thorndike, P.F.M. Koehler, and K.W. Rothe
Subjects: Physics, Nuclear physics, Photon, Angular distribution, Proton, Bremsstrahlung, General Physics and Astronomy, Atomic physics, Polarization (waves)
Published: 1967

689. Determination of theω→π+π−Decay Amplitude from Photoproduction

Author: E. H. Thorndike, C. K. Lee, A. A. Wehmann, H. J. Behrend, M. E. Nordberg, and F. Lobkowicz
Subjects: Phase difference, Physics, Particle physics, Amplitude, Branching fraction, General Physics and Astronomy, Production (computer science), Omega
Abstract: Interference between ${\ensuremath{\rho}}^{0}$ and $\ensuremath{\omega}$ photoproduced from carbon, aluminum, and lead has been studied in the $2\ensuremath{\pi}$ decay mode. The branching ratio $\frac{(\ensuremath{\omega}\ensuremath{\rightarrow}2\ensuremath{\pi})}{(\ensuremath{\omega}\ensuremath{\rightarrow}3\ensuremath{\pi})}$ is 2.8 \ifmmode\pm\else\textpm\fi{} 0.6%. The phase difference between the decay amplitudes $\ensuremath{\omega}\ensuremath{\rightarrow}2\ensuremath{\pi}$ and ${\ensuremath{\rho}}^{0}\ensuremath{\rightarrow}2\ensuremath{\pi}$ is 63\ifmmode^\circ\else\textdegree\fi{} \ifmmode\pm\else\textpm\fi{} 16\ifmmode^\circ\else\textdegree\fi{}.
Published: 1971

690. Photoproduction of 8-GeV Rho Mesons from Nuclei

Author: A. A. Wehmann, E. H. Thorndike, H. J. Behrend, and F. Lobkowicz
Subjects: Nuclear physics, Physics, Particle physics, Meson, General Physics and Astronomy
Published: 1970

691. Depolarization and Time Reversal inp−pScattering at 142 Mev

Author: T. R. Ophel, C. F. Hwang, E. H. Thorndike, and Richard Wilson
Subjects: Physics, Scattering, General Physics and Astronomy, Depolarization, Atomic physics
Published: 1960

692. Measurement of the Rotation ParameterRin Proton-Proton Scattering at 140 Mev

Author: E. H. Thorndike, J. Lefrancois, and Richard Wilson
Subjects: Physics, Nuclear physics, Range (particle radiation), Proton, Scattering, Proton scattering, General Physics and Astronomy, Atomic physics, Rotation
Abstract: The proton-proton rotation parameter R was measured at a laboratory energy of 140.5 Mev over a range of scattering angles theta /sub 2/ by means of a triple-scattering experiment. The following values were obtained: theta /sub 2/(lab) = 15 deg , 30 deg , -0.146 plus or minus 0.037; 35 deg , -0.151 plus or minus 0.055; 40 deg , -0.047 plus or minus 0.080. (auth)
Published: 1960

693. Nuclear Levels Excited by Inelastic Neutron Scattering

Author: A. T. Moffet, E. H. Thorndike, and F. I. Boley
Subjects: Nuclear physics, Physics, Scattering, Excited state, Gamma ray, General Physics and Astronomy, Phosphorus-31 NMR spectroscopy, Neutron, Inelastic scattering, Isotopes of cobalt, Inelastic neutron scattering
Abstract: Gamma-ray, neutron, and gamma-gamma coincidence spectra have been obtained from inelastic interactions of 2.48-Mev neutrons with P/sup 31/, Mn/sup 56/, Co/sup 59/, As/sup 75/, Nb/sup and Bi/sup 209/. The following previously unreported gamma rays have been observed: Co/sup 59/ 2.11 plus or minus 0.05, 0.698 plus or minus 1.61 plus or minus 0.04, 1.32 plus or minus 0.04 Mev; Nb/ sup 93/ 2.11 plus or minus 0.08, 1.94 plus or minus found for the existence of a 1.56 plus or minus 0.03 Mev level in Mn/sup 56/ and possibly a 1.02 plus or minus 0.05 Mev level in As/sup 75/. The following previously unreported coincidences have been observed: Co/sup 59/ 0.132--2.11 Mev; and As/sup 75/ 0.576- -0.136 Mev. (auth)
Published: 1958

694. Proton-Proton Bremsstrahlung at 204 MeV

Author: E. H. Thorndike, K.W. Rothe, and P.F.M. Koehler
Subjects: Nuclear physics, Physics, Proton, Bremsstrahlung, General Physics and Astronomy
Published: 1966

695. Neutron-Proton Bremsstrahlung at 197 MeV

Author: K.W. Rothe, E. H. Thorndike, and P.F.M. Koehler
Subjects: Physics, Nuclear physics, Deuterium, Proton, Particle model, Bremsstrahlung, General Physics and Astronomy, Neutron, Atomic physics
Published: 1967

696. Quasifree Nucleon-Nucleon Bremsstrahlung at 197 MeV

Author: E. H. Thorndike, K.W. Rothe, and P.F.M. Koehler
Subjects: Physics, Nuclear physics, Particle physics, Bremsstrahlung, General Physics and Astronomy, Nucleon
Published: 1968

697. Measurement of the Triple-Scattering ParameterAin Proton-Proton and Proton-Carbon Scattering at 139 MeV

Author: Stanley Hee and E. H. Thorndike
Subjects: Systematic error, Nuclear physics, Physics, Range (particle radiation), Angular distribution, chemistry, Proton, Scattering, General Physics and Astronomy, chemistry.chemical_element, Carbon
Abstract: The proton-proton triple-scattering parameter A was measured at a laboratory energy of 139 Mev over a range of scattering angles theta /sub 2/. The following values were obtained: theta /sub 2/(lab) = 15 deg , -0.368 plus or minus 0.032; 20 deg , --0.344 plus or minus 0.03l; 25 deg , --0.311 plus or minus 0.035; 30 deg , -0.231 plus or minus 0.046; 35 deg , -0.187 plus or minus 0.058; 40 deg , --0.099 plus or minus 0.079. The parameter was also determined for p-carbon scattering at theta /sub 2/(lab) = 15 deg with a laboratory scattering energy of 138 1/2 Mev. The value obtained was --0.531 plus or minus 0.048. The measurements are subject to a systematic error that could shift all values of A up or down together by perhaps 4%. In the errors listed above, this systematic error was combined quadratically with the other errors, which are of a nonsystematic nature. (auth)
Published: 1963

698. Photoproduction ofηπ±resonances

Author: C. A. Nelson, J. Harvey, J. Abramson, E. H. Thorndike, D. E. Andrews, E. N. May, F. Lobkowicz, M. Singer, R. Busnello, and M. E. Nordberg
Subjects: Physics, Nuclear physics
Published: 1977

699. Observation of a Fourth Upsilon State ine+e−Annihilations

Author: D. Potter, R. H. Siemann, R. Cabenda, N. B. Mistry, P. Skubic, K. Chadwick, E. H. Thorndike, D. Weber, H. G. Thonemann, F. M. Pipkin, A. Silverman, R. Plunkett, R. Ehrlich, T. Ferguson, J. Mueller, M. Herzlinger, G. Rucinski, M. S. Alam, Richard Wilson, Murdock Gilchriese, Harris Kagan, A. Chen, F. Sannes, T. Gentile, E. Nordberg, B. Gittelman, Richard Talman, J. W. Dewire, N. Horwitz, P. Ganci, F. Lobkowicz, Sheldon Stone, C. J. Bebek, C. Rosenfeld, Joseph Izen, K. A. Shinsky, A. C. Melissinos, D. G. Cassel, D. L. Bridges, S. L. Olsen, D. Bechis, J. Haggerty, D. L. Hartill, Karl Berkelman, D. Herrup, R. D. Kass, H. Kooy, D. L. Kreinick, J. Rohlf, P. Lariccia, D. Andrews, R. Perchonok, Robert Stone, J. S. Poucher, J. Kandaswamy, P. C. Stein, A. Brody, S. E. Csorna, R. S. Panvini, W. A. Loomis, M. Goldberg, W. Tanenbaum, G. Warren, A. J. Sadoff, Ron Poling, and G. C. Moneti
Subjects: Physics, Particle physics, Annihilation, Meson, Hadron, General Physics and Astronomy, Resonance, Threshold energy, Nuclear physics, Physics::Accelerator Physics, High Energy Physics::Experiment, B meson, Cornell Electron Storage Ring, Nuclear Experiment, Boson
Abstract: A fourth state in the upsilon energy region has been seen in e/sup +/e/sup -/ collisions at the Cornell Electron Storage Ring. A resonance is observed with a mass 1112 +- 5 MeV above the lowest upsilon state. The 9.6-MeV rms width is greater than the 4.6-MeV energy resolution of the e/sup +/e/sup -/ beams. The observed characteristics of the new state make it a likely candidate for the 4/sup 3/S state of the bb-bar system, lying above the threshold for the production of B mesons.
Published: 1980

700. Search for Photoproduction ofψ(3105)

Author: C. A. Nelson, D. E. Andrews, F. Lobkowicz, E. H. Thorndike, M. E. Nordberg, J. Harvey, and E. N. May
Subjects: Physics, Nuclear physics, Particle physics, Positron, Branching fraction, Scintillation counter, Bremsstrahlung, General Physics and Astronomy, Electron
Published: 1975

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