Author: "M. Pipkin" / Journal: physical review d - Searchworks@Jio Institute Digital Library Search Results

1. Proton and deuteron structure functions in muon scattering at 470 GeV

Author: Michael Schmitt, Andris Skuja, V. Eckardt, H. E. Montgomery, A. Manz, A. Zghiche, Richard Wilson, Jan Figiel, S. Söldner-Rembold, Tiefu Zhao, G. Siegert, V. Papavassiliou, F. M. Pipkin, F. S. Dietrich, R. W. Finlay, S. Magill, L.S. Osborne, R. Otten, Henry Lubatti, S. B. Kaufman, Norbert Schmitz, A. A. Bhatti, B. Baller, H. L. Melanson, K. Olkiewicz, T. Dreyer, R. A. Swanson, C. Halliwell, R. B. Nickerson, M. Erdmann, H. J. Gebauer, M. D. Baker, H. Schellman, R. Davisson, Janet Conrad, Jorge G. Morfin, J. Haas, H. E. Jackson, Timothy J. Carroll, D. H. Potterveld, W. Dougherty, B. Pawlik, K. A. Griffioen, D. Hantke, G. Y. Fang, S. Wolbers, P. Spentzouris, J. Novak, D. G. Michael, G. A. Snow, W. Wittek, U. Ecker, A. Röser, Shuichi Kunori, H. G. E. Kobrak, E. J. Ramberg, H. M. Braun, D. McLeod, P. Madden, H. L. Clark, E. R. Kinney, C. W. Salgado, D. M. Jansen, Mark Raymond Adams, J. J. Lord, D. A. Averill, A. Banerjee, D. F. Geesaman, G. Jancso, A. V. Kotwal, P. L. Anthony, S. O'Day, M. Wilhelm, D. E. Jaffe, R. S. Guo, J. J. Ryan, S. Aïd, U. Bratzler, K. Hicks, P. Stopa, R. D. Kennedy, H. E. Stier, H. Venkataramania, A. Salvarani, Z. Jin, and I. Derado
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Muon, Proton, Scattering, Hadron, High Energy Physics::Experiment, HERA, Atomic physics, Connection (algebraic framework), Twist, Inelastic scattering
Abstract: The proton and deuteron structure functions F2 p and F2 d are measured in inelastic muon scattering with an average beam energy of 470 GeV. The data were taken at Fermilab experiment E665 during 1991 and 1992 using liquid hydrogen and deuterium targets. The F2 measurements are reported in the range 0.0008
Published: 1996
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2. Scaled energy (z) distributions of charged hadrons observed in deep-inelastic muon scattering at 490 GeV from xenon and deuterium targets

Author: S. Magill, A. Eskreys, W. Wittek, B. Pawlik, R. A. Swanson, P. H. Steinberg, H. Venkataramania, H. Schellman, M. Wilhelm, S. Wolbers, H. G. E. Kobrak, H. M. Braun, U. Ecker, P. Malecki, Ronald Gilman, W. Dougherty, M. D. Baker, S. Krzywdzinski, S. Aïd, R. L. Talaga, Satish Dhawan, C. Halliwell, D. Hantke, N. Schmitz, Shuichi Kunori, G. A. Snow, J. Wilkes, A. Salvarani, D. G. Michael, Jim Hanlon, D. F. Geesaman, S. Söldner-Rembold, R. Davisson, Jorge G. Morfin, H. E. Jackson, T. Kirk, V. Papavassiliou, K. Dziunikowska, F. M. Pipkin, M. C. Green, A. A. Bhatti, H. L. Melanson, V. W. Hughes, H. J. Trost, Richard Wilson, G. Coutrakon, A. Manz, S. O'Day, Wit Busza, Janet Conrad, H. J. Seyerlein, Timothy J. Carroll, H. E. Stier, Andris Skuja, J. F. Bartlett, I. Derado, W. Mohr, Michael Schmitt, S. Tentindo-Repond, A. Röser, V. Eckardt, H. E. Montgomery, H. J. Gebauer, D. McLeod, T. Dreyer, L.S. Osborne, M. Vidal, M. R. Adams, J. J. Ryan, J. Haas, P.L. Anthony, Tiefu Zhao, E. J. Ramberg, Martin Erdmann, S. B. Kaufman, D. M. Jansen, D. E. Jaffe, K. P. Schüler, P. Stopa, R. D. Kennedy, Henry Lubatti, G. Jancso, J. J. Lord, K. Olkiewicz, R. B. Nickerson, and Jan Figiel
Subjects: Physics, Nuclear reaction, Particle physics, Muon, Scattering, Computer Science::Information Retrieval, Momentum transfer, Hadron, Inelastic scattering, Deep inelastic scattering, Nuclear physics, Deuterium, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Fermilab Experiment-665 measured deep-inelastic scattering of 490 GeV muons off deuterium and xenon targets. Events were selected with a range of energy exchange [nu] from 100 GeV to 500 GeV and with large ranges of [ital Q][sup 2] and [ital x][sub Bj]: 0.1 GeV[sup 2]/[ital c][sup 2][lt][ital Q][sup 2][lt]150 GeV[sup 2]/[ital c][sup 2] and 0.001[lt][ital x][sub Bj][lt]0.5. The fractional energy ([ital z]) distributions of forward-produced hadrons from the two targets have been compared as a function of the kinematics of the scattering; specifically, the kinematic region of shadowing'' has been compared to that of nonshadowing. The dependence of the distributions upon the [ital order] of the hadrons, determined by the fractional energies, has been examined as well; a strong degree of similarity has been observed in the shapes of the distributions of the different order hadrons. These [ital z] distributions, however, show no nuclear dependence, even in the kinematic region of shadowing.
Published: 1994
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3. Perturbative QCD effects observed in 490 GeV deep-inelastic muon scattering

Author: K. P. Schüler, S. Aïd, Norbert Schmitz, D. F. Geesaman, U. Ecker, M. Erdmann, Mark Raymond Adams, K. Olkiewicz, K. Dziunikowska, R. L. Talaga, T. Kirk, P. L. Anthony, Pa. Malecki, Wit Busza, M. D. Baker, Ronald Gilman, H. J. Trost, B. Pawlik, S. Krzywdzinski, H. J. Gebauer, H. L. Melanson, A. Eskreys, S. O'Day, D. McLeod, Shuichi Kunori, R. A. Swanson, P. H. Steinberg, H. Schellman, Jan Figiel, R. Davisson, J. J. Lord, H. E. Stier, Jorge G. Morfin, D. G. Michael, F. M. Pipkin, E. J. Ramberg, S. Wolbers, S. Magill, R. D. Kennedy, V. Papavassiliou, D. E. Jaffe, R. B. Nickerson, W. Dougherty, D. M. Jansen, Michael Schmitt, C. Halliwell, L. S. Osborne, V. W. Hughes, C. W. Salgado, J. Wilkes, S. K. Dhawan, A. Röser, Richard Wilson, H. Venkataramania, A. A. Bhatti, A. Manz, A. Salvarani, D. Hantke, Andris Skuja, V. Eckardt, G. A. Snow, H. E. Montgomery, Janet Conrad, G. Coutrakon, J. J. Ryan, T. Dreyer, J. Haas, H. M. Braun, P. Stopa, S. Söldner-Rembold, Tiefu Zhao, M. C. Green, S. B. Kaufman, H. E. Jackson, W. Wittek, H. G. E. Kobrak, J. F. Bartlett, G. Jancso, I. Derado, S. Tentindo-Repond, W. Mohr, Jim Hanlon, Henry Lubatti, and M. Wilhelm
Subjects: Quantum chromodynamics, Physics, Particle physics, Muon, Computer Science::Information Retrieval, High Energy Physics::Phenomenology, Hadron, Perturbative QCD, Elementary particle, Parton, Inelastic scattering, Deep inelastic scattering, Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Results on forward charged hadrons in 490 GeV deep-inelastic muon scattering are presented. The transverse momenta, azimuthal asymmetry, and energy flow of events with four or more forward charged hadrons are studied. The range of the invariant hadronic mass squared 300[lt][ital W][sup 2][lt]900 GeV[sup 2]/[ital c][sup 4] extends higher than previous deep-inelastic muon scattering experiments. Data are compared to the predictions of the Lund Monte Carlo model with perturbative QCD simulated by matrix elements, parton showers, and color dipole radiation. All of the QCD-based models are consistent with the data while a model without QCD processes is not. Correlations with the multiplicity-independent event variable [Pi][congruent][summation][vert bar][ital p][sub [ital T]][vert bar] are studied. The relationship between the azimuthal asymmetry and transverse momentum of forward hadrons is also presented. The data are most consistent with intrinsic parton transverse momentum squared [ital k][sub [ital T]][sup 2] of 0.25 GeV[sup 2]/[ital c][sup 2].
Published: 1993
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4. Study of continuumD*+spin alignment

Author: G. C. Moneti, E. I. Shibata, B. Nemati, F. Morrow, D. Besson, J. Whitmore, M. Pisharody, Karl Berkelman, B. Gittelman, T. Haupt, R. Davis, S. Hederson, Chunjie Wang, I. J. Kim, R. Malchow, John Yelton, W. C. Li, T. Jensen, P. Rubin, D. L. Hartill, R. Poling, L. Garren, D. Perticone, K. Honscheid, N. Kwak, Ian Shipsey, Yoram Rozen, W. M. Yao, C. Bebek, R. Fulton, P. Haas, T. E. Browder, Philip Baringer, P. Wilson, M. Sapper, R. L. McIlwain, A. M. Halling, M. Procario, A. V. Barnes, K. Sparks, C. R. Ng, A. Silverman, B. Geiser, M. Worris, S. Schrenk, Daniela Bortoletto, R. Ehrlich, Richard Wilson, S. Ro, M. Thusalidas, Hubert Kroha, M. D. Mestayer, Marina Artuso, D. L. Kreinick, D. N. Brown, N. Horwitz, D. Riley, Maurice Garcia-Sciveres, Elliott Cheu, V. Jain, G. Crawford, J. Dominick, S. F. Schaffner, J. Bartelt, E. Nordberg, M. S. Alam, E. H. Thorndike, M. M. Zoeller, G. S. Ludwig, N. Katayama, H. Kagan, F. M. Pipkin, D. M. Coffman, D. Coppage, P. S. Drell, Yuichi Kubota, B. K. Heltsley, T. Letson, D. H. Miller, Jorge Luis Rodriguez, R. Ammar, G. Zhu, J. P. Alexander, V. Romero, H. Worden, J. K. Nelson, P. N. Wang, Mats A Selen, D. R. Johnson, A. J. Sadoff, D. G. Cassel, C. O'Grady, Tomasz Skwarnicki, S. Nandi, S. E. Csorna, K. Kinoshita, J. Mevissen, J. Kandaswamy, D. Peterson, M. Battle, N. B. Mistry, M. Goldberg, Ha Lam, Sheldon Stone, Paul Avery, J. Masui, J. Wolinski, J. D. Lewis, C. R. Sun, R. D. Kass, M. Modesitt, M. L. Kelly, and S. W. Gray
Subjects: Physics, Momentum, Particle physics, Angular distribution, Annihilation, Spin polarization, Meson, Electron–positron annihilation, High Energy Physics::Experiment, Continuum (set theory), Nuclear Experiment, Spin-½
Abstract: The spin alignment of ${D}^{*+}$ mesons produced in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation at $\sqrt{s}=10.5$ GeV is obtained from a study of the angular distribution of the decay ${D}^{*+}\ensuremath{\rightarrow}{D}^{0}{\ensuremath{\pi}}^{+}$. The alignment is studied as a function of momentum and compared to theoretical predictions. We find an average value of the spin alignment parameter $\ensuremath{\eta}$ of $〈\ensuremath{\eta}〉=0.04\ifmmode\pm\else\textpm\fi{}0.02\ifmmode\pm\else\textpm\fi{}0.01$. We obtain a model-dependent measurement of the probability of producing a vector particle $〈{P}_{V}〉=0.77\ifmmode\pm\else\textpm\fi{}0.02\ifmmode\pm\else\textpm\fi{}0.01$ for $D$ mesons.
Published: 1991
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5. Inclusive production of the charmed baryonΛc+frome+e−annihilations ats=10.55GeV

Author: E. H. Thorndike, F. M. Pipkin, Y. Zhu, D. Coppage, N. Kwak, Mats A Selen, A. Silverman, M. D. Mestayer, A. J. Sadoff, S. R. Ro, D. Z. Besson, T. Haupt, R. L. McIlwain, R. S. Galik, D. G. Cassel, W. M. Yao, J. D. Lewis, M. Thulasidas, Cong Wang, Richard Wilson, P. Haas, R. Poling, Ha Lam, K. Sparks, M. Procario, John Yelton, D. Perticone, Yoram Rozen, M. Pisharody, G. Zhu, Karl Berkelman, W. Y. Chen, James Mueller, M. S. Alam, R. Ammar, D. M. Coffman, Philip Baringer, D. L. Hartill, T. Skwarnicki, I. P. J. Shipsey, B. K. Heltsley, V. Romero, H. Worden, Wei Li, Vipul Jain, D. H. Miller, R. Ehrlich, Janice Nelson, M. M. Zoeller, Marina Artuso, N. Horwitz, D. Riley, M. Goldberg, G. C. Moneti, M. Sapper, D. L. Kreinick, C. Bebek, Vivek Sharma, S.F. Schaffner, T. E. Browder, Elliott Cheu, J. Dominick, Glen D. Crawford, C. R. Ng, C. O'Grady, Yuichi Kubota, P. Rubin, J. Alexander, A. M. Halling, N. Katayama, J. Wolinski, F. Morrow, M. Worris, R. Fulton, J. Kandaswamy, D. Xiao, S. E. Csorna, T. Jensen, E. Nordberg, S. W. Gray, G. S. Ludwig, D. Peterson, K. Kinoshita, T. Letson, D. R. Johnson, Daniela Bortoletto, Xinchou Lou, Sheldon Stone, J. W. Dewire, Paul Avery, P. S. Drell, P. Wilson, Soumitra Nandi, L. Garren, B. Gittelman, C. R. Sun, R. D. Kass, I. J. Kim, N. B. Mistry, J. Whitmore, Pu Wang, E. I. Shibata, and H. Kagan
Subjects: Baryon, Physics, Particle physics, Branching fraction, Production (computer science), Continuum (set theory)
Abstract: We report results on inclusive production of the charmed baryon ${{\ensuremath{\Lambda}}_{c}}^{+}$ from ${e}^{+}{e}^{\ensuremath{-}}$ annihilations at $\sqrt{s}=10.5$ GeV. Measurements are presented of the inclusive cross section times branching fraction for the continuum production of ${{\ensuremath{\Lambda}}_{c}}^{+}$ as observed in six different decay modes, and of a new, improved value of the ${{\ensuremath{\Lambda}}_{c}}^{+}$ mass. The inclusive cross section times the branching fraction into $p{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ is measured to be 10.0\ifmmode\pm\else\textpm\fi{}1.5\ifmmode\pm\else\textpm\fi{}1.5 pb summed over all ${x}_{p}$. The branching fractions of ${{\ensuremath{\Lambda}}_{c}}^{+}$ into $p{\overline{K}}^{0}$, $p{\overline{K}}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, $\ensuremath{\Lambda}{\ensuremath{\pi}}^{+}$, $\ensuremath{\Lambda}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, and ${\ensuremath{\Xi}}^{\ensuremath{-}}{K}^{+}{\ensuremath{\pi}}^{+}$ relative to that into $p{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$ are measured to be 0.44\ifmmode\pm\else\textpm\fi{}0.07\ifmmode\pm\else\textpm\fi{}0.05, 0.43\ifmmode\pm\else\textpm\fi{}0.12\ifmmode\pm\else\textpm\fi{}0.04, 0.18\ifmmode\pm\else\textpm\fi{}0.03\ifmmode\pm\else\textpm\fi{}0.03, 0.65\ifmmode\pm\else\textpm\fi{}0.11\ifmmode\pm\else\textpm\fi{}0.12, and 0.15\ifmmode\pm\else\textpm\fi{}0.04\ifmmode\pm\else\textpm\fi{}0.03, respectively. The ${{\ensuremath{\Lambda}}_{c}}^{+}$ mass is measured to be 2284.7\ifmmode\pm\else\textpm\fi{}0.6\ifmmode\pm\else\textpm\fi{}0.7 MeV/${\mathit{c}}^{2}$. The measured momentum distributions for continuum production of ${{\ensuremath{\Lambda}}_{c}}^{+}$ are compared to analytical fragmentation functions and to other measurements.
Published: 1991
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6. Study ofD0decays into final states with aπ0orη

Author: M. Procario, H. Kagan, A. M. Halling, E. H. Thorndike, M. Worris, J. Masui, S. F. Schaffner, Daniela Bortoletto, J. Bartelt, D. G. Cassel, Y. Zhu, T. Letson, D. H. Miller, D. Coppage, P. S. Drell, R. Fulton, Mats A Selen, R. Ammar, J. Whitmore, M. S. Alam, A. J. Sadoff, T. E. Browder, J. P. Alexander, F. Morrow, J. Wolinski, T. Haupt, P. N. Wang, D. Besson, P. Wilson, Yuichi Kubota, E. Nordberg, S. E. Csorna, N. Katayama, R. Malchow, Ha Lam, C. Bebek, J. D. Lewis, G. S. Ludwig, John Yelton, B. Geiser, A. Silverman, K. Kinoshita, V. Romero, C. O'Grady, Tomasz Skwarnicki, J. K. Nelson, R. S. Galik, W. C. Li, D. Xiao, M. L. Kelly, T. Jensen, C. R. Sun, Hubert Kroha, N. Kwak, Richard Wilson, S. W. Gray, M. Modesitt, R. D. Kass, F. M. Pipkin, L. Garren, M. Goldberg, K. Honscheid, Elliott Cheu, N. Horwitz, G. Crawford, G. C. Moneti, B. Gittelman, Maurice Garcia-Sciveres, M. M. Zoeller, N. B. Mistry, R. L. McIlwain, H. Worden, I. J. Kim, Chunjie Wang, E. I. Shibata, J. Mevissen, M. Sapper, A. V. Barnes, S. Schrenk, V. Jain, J. Kandaswamy, K. Sparks, M. Pisharody, Karl Berkelman, D. Peterson, C. R. Ng, S. Nandi, Sheldon Stone, G. Zhu, M. D. Mestayer, D. N. Brown, Paul Avery, Marina Artuso, D. R. Johnson, M. Thusalidas, I. P.J. Shipsey, R. Davis, P. Rubin, D. L. Kreinick, J. Dominick, M. Battle, D. Perticone, Yoram Rozen, W. M. Yao, P. Haas, Philip Baringer, R. Ehrlich, S. Ro, D. M. Coffman, B. K. Heltsley, D. L. Hartill, R. Poling, and D. Riley
Subjects: Physics, Crystallography, Pion, Meson, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Isospin, Hadron, Elementary particle, Cornell Electron Storage Ring, Omega
Abstract: We have made measurements of decay modes of neutral {ital D} mesons into exclusive final states containing photons using data collected with the CLEO detector at the Cornell Electron Storage Ring. We report observation of {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{pi}{sup +}{pi}{sup {minus}}{pi}{sup +}{pi}{sup 0} (charge conjugates are implicit), and present new measurements of the branching ratios for {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{pi}{sup +}{pi}{sup 0}, {ital D}{sup 0}{r arrow}{ital {bar K}}{sup 0}{pi}{sup +}{pi}{sup 0}{pi}{sup {minus}}, {ital D}{sup 0}{r arrow}{ital {bar K}}{sup 0}{pi}{sup 0}, {ital {bar K}}{sup *0}{eta}, and {ital D}{sup 0}{r arrow}{ital {bar K}}{sup 0}{omega}. Where possible, results are compared with theoretical predictions for two-body {ital D}{sup 0} decays.
Published: 1991
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7. Study ofπ+π−transitions from theϒ(3S)and a search for thehb

Author: R. DeSalvo, G. C. Moneti, E. I. Shibata, Thomas Ferguson, A. M. Halling, Y. Kubota, M. Worris, D. L. Hartill, R. Poling, Daniela Bortoletto, F. Morrow, J. W. Dewire, B. Gittelman, Ian Shipsey, D. Chen, V. Sharma, I. J. Kim, W. C. Li, M. Procario, R. Ehrlich, Xinchou Lou, T. Jensen, R. Fulton, C. Bebek, E. Nordberg, L. Garren, R. L. McIlwain, T. Skwarnicki, D. Besson, A. Silverman, R. Ng, F. M. Pipkin, M. D. Mestayer, M. S. Alam, T. Copie, D. G. Cassel, S. Nandi, P. Baringer, T. Letson, D. H. Miller, D. L. Kreinick, H. Kagan, Richard Wilson, P. Lubrano, R. S. Galik, James Mueller, S. E. Csorna, R. Holmes, K. Kinoshita, D. Riley, P. Haas, J. Byrd, M. Hempstead, A. J. Sadoff, T. J. V. Bowcock, D. Xiao, D. M. Coffman, John Yelton, B. K. Heltsley, E. Blucher, N. Horwitz, R. Namjoshi, Elliott Cheu, Glen D. Crawford, M. Pisharody, Karl Berkelman, V. Tanikella, D. R. Johnson, J. Kandaswamy, A. Jawahery, D. Peterson, Ian Brock, R. Kowalewski, C. H. Park, N. B. Mistry, Hans J. Vogel, N. Katayama, M. Goldberg, J. Wolinski, J. D. Lewis, C. R. Sun, R. D. Kass, Sheldon Stone, Paul Avery, D. Perticone, S. W. Gray, and J. Whitmore
Subjects: Physics, Crystallography, Particle decay, ComputingMilieux_THECOMPUTINGPROFESSION, Meson, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Electron–positron annihilation, Hadron, Bound state, Dalitz plot, Elementary particle
Abstract: We have investigated the transitions {Upsilon}(3{ital S}){r arrow}{pi}{sup +}{pi}{sup {minus}}{Upsilon}(1{ital S}), {Upsilon}(3{ital S}){r arrow}{pi}{sup +}{pi}{sup {minus}}{Upsilon}(2{ital S}) and the cascade process {Upsilon}(3{ital S}){r arrow}{Upsilon}(2{ital S})+{ital X},{Upsilon}(2{ital S}){r arrow}{pi}{sup +}{pi}{sup {minus}}{Upsilon}(1{ital S}), both in the exclusive decay mode, with the daughter {Upsilon} state decaying into two leptons, and in the inclusive decay mode, with the daughter {Upsilon} state decaying hadronically. Results are presented on the branching fractions and properties of the {pi}{sup +}{pi}{sup {minus}} system. The {pi}{sup +}{pi}{sup {minus}} invariant-mass spectra for the decays {Upsilon}(3{ital S}){r arrow}{pi}{sup +}{pi}{sup {minus}}{Upsilon}(1{ital S}) and {Upsilon}(3{ital S}){r arrow}{pi}{sup +}{pi}{sup {minus}}{Upsilon}(2{ital S}) are measured and compared with theoretical predictions. We also present the results of a search for the {ital h}{sub {ital b}}(1 {sup 1}{ital P}{sub 1}) and {Upsilon}(1 {sup 3}{ital D}) states in inclusive {Upsilon}(3{ital S}) decays, and for the exclusive decay {Upsilon}(3{ital S}){r arrow}{eta}{Upsilon}(1{ital S}).
Published: 1991
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8. Exclusive and inclusive semileptonic decays ofBmesons toDmesons

Author: Ron Poling, Maurice Garcia-Sciveres, G. C. Moneti, F. Morrow, Elliott Cheu, B. Geiser, J. Masui, Glen D. Crawford, K. Sparks, D. G. Cassel, E. I. Shibata, C. R. Ng, M. D. Mestayer, Y. Zhu, W. C. Li, M. Pisharody, S. W. Gray, Karl Berkelman, A. M. Halling, N. Katayama, Marina Artuso, T. Jensen, P. S. Drell, John Yelton, M. Worris, J. Whitmore, N. Horwitz, L. Garren, D. L. Kreinick, B. Gittelman, E. H. Thorndike, R. Ammar, V. Romero, J. K. Nelson, I. J. Kim, D. Xiao, F. M. Pipkin, P. Rubin, M. Thulasidas, J. Dominick, C. Bebek, Mats A Selen, D. Coppage, K. Honscheid, P. N. Wang, J. P. Alexander, A. J. Sadoff, M. Battle, Harris Kagan, W. Y. Chen, V. Sharma, S. Nandi, M. Sapper, R. Ehrlich, D. R. Johnson, S. Ro, R. Davis, R. S. Galik, D. M. Coffman, Chunjie Wang, M. M. Zoeller, B. K. Heltsley, D. Perticone, G. Zhu, Yoram Rozen, P. Haas, Richard Wilson, Philip Baringer, D. Riley, S. F. Schaffner, Yuichi Kubota, N. B. Mistry, J. Mevissen, J. Kandaswamy, D. Peterson, Daniela Bortoletto, J. W. Dewire, Sheldon Stone, Paul Avery, J. D. Lewis, C. R. Sun, R. D. Kass, D. Besson, R. Fulton, E. Nordberg, G. S. Ludwig, T. Letson, D. H. Miller, H. Worden, C. O'Grady, Ian Shipsey, Tomasz Skwarnicki, T. E. Browder, P. Wilson, A. Silverman, W. M. Yao, S. E. Csorna, K. Kinoshita, T. Haupt, J. Wolinski, V. Jain, D. L. Hartill, N. Kwak, Ha Lam, R. L. McIlwain, M. S. Alam, M. Procario, and M. Goldberg
Subjects: Semileptonic decay, Physics, Particle decay, Particle physics, Crystallography, Meson, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Electron–positron annihilation, Hadron, B meson
Abstract: We report new measurements of the branching fractions {ital B}({ital B}{sup {minus}}{r arrow}{ital D}{sup 0}{ital l{minus}}{bar {nu}}), {ital B}({ital {bar B}}{sup 0}{r arrow}{ital D}{sup +}{ital l{minus}}{bar {nu}}), and {ital B}({ital B}{sup {minus}}{r arrow}{ital D}{sup *0}{ital l{minus}}{bar {nu}}). Combining these results with our previous measurement of {ital B}({ital {bar B}}{sup 0}{r arrow}{ital D}{sup *+}{ital l{minus}}{bar {nu}}), we find that the ratio of semileptonic widths for final states with a vector meson and pseudoscalar meson is (2.6{sub {minus}0.6{minus}0.8}{sup +1.1+1.0}) and the ratio of charged- to neutral-{ital B}-meson lifetimes is (0.89{plus minus}0.19{plus minus}0.13)({ital f}{sub 00}/{ital f}{sub +{minus}}) where ({ital f}{sub 00}/{ital f}{sub +{minus}}) is the ratio of neutral- to charged-{ital B}-meson production at the {Upsilon}(4{ital S}). From the {ital {bar B}}{r arrow}{ital Dl}{sup {minus}}{bar {nu}} branching fraction, we calculate {vert bar}{ital V}{sub {ital c}{ital b}}{vert bar}=0.040{plus minus}0.006 {plus minus}0.006, where the first error is statistical and the second is systematic and dominated by the uncertainty in the {ital B}-meson lifetime.
Published: 1991
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9. Radiativeϒ(1S)decays

Author: Thomas Ferguson, B. Gittelman, I. J. Kim, R. S. Galik, Y. Kubota, F. Morrow, J. Whitmore, H. Kagan, Daniela Bortoletto, D. L. Hartill, W. M. Yao, V. Sharma, R. Ehrlich, J. W. Dewire, A. Jawahery, A. M. Halling, R. Poling, W. C. Li, E. H. Thorndike, T. Copie, James Alexander, M. Worris, D. G. Cassel, D. L. Kreinick, M. Procario, T. Jensen, F. M. Pipkin, M. Pisharody, J. Byrd, L. Garren, Helmut Vogel, P. Lubrano, Karl Berkelman, A. J. Sadoff, S. Nandi, D. Xiao, Xinchou Lou, Themistocles Bowcock, Ian Shipsey, M. S. Alam, S. E. Csorna, C. Bebek, J. Dominick, Richard Wilson, M. Sapper, John Yelton, K. Sparks, W. Y. Chen, C. R. Ng, D. Perticone, D. Riley, Ian Brock, D. R. Johnson, R. Kowalewski, T. Skwarnicki, M. Hempstead, Persis S. Drell, A. Silverman, P. Haas, James Mueller, K. Kinoshita, C. H. Park, Marina Artuso, D. Besson, Philip Baringer, Elliott Cheu, H. Worden, Glen D. Crawford, N. B. Mistry, N. Horwitz, R. L. McIlwain, N. Katayama, D. M. Coffman, M. D. Mestayer, E. Blucher, B. K. Heltsley, R. Namjoshi, C. O'Grady, J. Kandaswamy, D. Peterson, R. Fulton, T. Letson, D. H. Miller, E. Nordberg, J. Wolinski, M. Goldberg, Ha Lam, Sheldon Stone, Paul Avery, J. D. Lewis, C. R. Sun, R. D. Kass, G. C. Moneti, E. I. Shibata, and S. W. Gray
Subjects: Physics, Crystallography, Particle physics, Angular distribution, Meson, Branching fraction, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Hadron, Radiative transfer, Elementary particle, Quarkonium, Boson
Abstract: We report on a study of exclusive radiative decays of the {Upsilon}(1{ital S}) resonance. We have considered decays into final states of the form {Upsilon}{r arrow}{gamma}{ital n}({ital h}{sup +}{ital h}{sup {minus}}), with ({ital h}{sup +}{ital h}{sup {minus}}) denoting a charged-hadron pair (either {pi}{sup +}{pi}{sup {minus}},{ital K}{sup +}{ital K}{sup {minus}}, or {ital p{bar p}}), and {ital n} denoting the number of such pairs in the event. We measure branching ratios for {ital n}=2, 3, and 4, and search for structure in the recoiling hadronic system. For the {ital n}=1 case, we present upper limits. No evidence is observed for two-body radiative decays of the {Upsilon}(1{ital S}) meson in any of the above channels.
Published: 1990
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10. P-wave charmed mesons ine+e−annihilation

Author: M. Procario, R. S. Galik, R. Fulton, Y. Kubota, D. Riley, L. Garren, J. K. Nelson, R. L. McIlwain, Ian Shipsey, E. Nordberg, A. Silverman, C. Bebek, C. H. Park, D. L. Hartill, S. F. Schaffner, Daniela Bortoletto, N. B. Mistry, R. Poling, Ha Lam, M. Hempstead, W. Y. Chen, H. Worden, K. Sparks, J. D. Lewis, G. C. Moneti, D. G. Cassel, C. R. Ng, M. Sapper, J. W. Dewire, C. R. Sun, E. I. Shibata, R. D. Kass, Richard Wilson, C. O'Grady, F. Morrow, E. H. Thorndike, Marina Artuso, F. M. Pipkin, M. Pisharody, Karl Berkelman, N. Katayama, M. S. Alam, James Alexander, J. Kandaswamy, A. M. Halling, N. Horwitz, Themistocles Bowcock, R. Namjoshi, D. M. Coffman, Sheldon Stone, W. C. Li, S. Nandi, Paul Avery, M. D. Mestayer, T. Jensen, M. Worris, Persis S. Drell, D. Peterson, B. K. Heltsley, J. Whitmore, T. Letson, D. H. Miller, B. Gittelman, J. Wolinski, Xinchou Lou, S. E. Csorna, D. Besson, I. J. Kim, K. Kinoshita, D. R. Johnson, M. Goldberg, A. Jawahery, R. Ammar, V. Sharma, R. Ehrlich, H. Kagan, D. L. Kreinick, T. Skwarnicki, J. Dominick, D. Xiao, A. J. Sadoff, D. Perticone, Elliott Cheu, Glen D. Crawford, P. Haas, James Mueller, Philip Baringer, John Yelton, W. M. Yao, and S. W. Gray
Subjects: Physics, Particle physics, Annihilation, Meson, Electron–positron annihilation, Mass spectrum, State (functional analysis), Cornell Electron Storage Ring
Abstract: Author(s): Avery, P; Besson, D; Garren, L; Yelton, J; Bowcock, T; Kinoshita, K; Pipkin, FM; Procario, M; Wilson, R; Wolinski, J; Xiao, D; Ammar, R; Baringer, P; Haas, P; Lam, H; Jawahery, A; Park, CH; Nelson, JK; Perticone, D; Poling, R; Chen, W; Dominick, J; McIlwain, RL; Miller, DH; Ng, CR; Schaffner, SF; Shibata, EI; Yao, W; Sparks, K; Thorndike, EH; Alam, MS; Kim, IJ; Li, WC; Lou, XC; Sun, CR; Fulton, R; Hempstead, M; Jensen, T; Johnson, DR; Kagan, H; Kass, R; Morrow, F; Whitmore, J; Bortoletto, D; Goldberg, M; Horwitz, N; Mestayer, MD; Moneti, GC; Sharma, V; Shipsey, IP; Skwarnicki, T; Csorna, SE; Letson, T; Alexander, J; Artuso, M; Bebek, C; Berkelman, K; Cassel, DG; Cheu, E; Coffman, DM; Crawford, G; DeWire, JW; Drell, PS; Ehrlich, R | Abstract: Using the CLEO detector at the Cornell Electron Storage Ring, we have found evidence for L=1 charmed mesons in e+e- annihilations. We observe a D**0 state at mass 2461±3±1 MeV/c2 and width 20-12-10+9+9 MeV/c2 decaying to D+-. We also see an enhancement in the m(D*+-)-m(D*+) mass-difference spectrum and by examining D*+ decay-angle dependence, we see structure consistent with two states decaying to D*+-. We observe a lower-mass state, at mass (2428±3±2) MeV/c2 and width (23-6-4+8+10) MeV/c2, assuming that the higher-mass component is from the decay D**0(2461)D*+-. We present arguments for the spin-parity assignments of these states. We also report observation of candidate L=1 cs» state decaying to D*+Ks0. © 1990 The American Physical Society.
Published: 1990
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11. 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
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12. 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
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13. Limit on the mass of the tau neutrino

Author: Harris Kagan, Paul Tipton, M. S. Alam, Richard Wilson, C. Bebek, Ron Poling, S. E. Csorna, I. J. Kim, Sheldon Stone, A. M. Halling, Paul Avery, Ian Brock, R. Kowalewski, Chih-Ree Sun, Themistocles Bowcock, P. Haas, James Mueller, D. L. Kreinick, R. DeSalvo, K. Kinoshita, A. Chen, D. Perticone, J. Hassard, T. Jensen, N. B. Mistry, S. Holzner, S. Behrends, M. Pisharody, A. Silverman, G. C. Moneti, Karl Berkelman, M. D. Mestayer, D. Riley, V. Sharma, R. Ehrlich, T. Copie, C. Rippich, M. Goldberg, B. K. Heltsley, Kenneth Francis Read, A. Engler, R. D. Kass, M. Hempstead, Hans J. Vogel, Xia Yi, Joan A. Guida, J. Kandaswamy, N. Katayama, S. W. Gray, L. Garren, R. W. Kraemer, M. Ito, J. Wolinski, E. Nordberg, D. Peterson, P. Lubrano, R. Holmes, N. Horwitz, M. Ogg, Alice Bean, G. B. Word, R. T. Giles, F. Morrow, R. S. Panvini, G. J. Bobbink, E. H. Thorndike, F. M. Pipkin, D. L. Hartill, V. Tanikella, E. Blucher, R. Namjoshi, A. Jawahery, T. Gentile, D. Xiao, D. Besson, D. G. Cassel, Murdock Gilchriese, B. Gittelman, A. J. Sadoff, R. S. Galik, Daniela Bortoletto, Y. Kubota, Thomas Ferguson, J. W. Dewire, and Jan M. Guida
Subjects: Nuclear physics, Massless particle, Physics, Particle decay, Particle physics, Annihilation, Tau neutrino, High Energy Physics::Experiment, Elementary particle, Limit (mathematics), Neutrino, Lepton
Abstract: We place an upper limit on the mass of the tau neutrino by using the total-charged-energy distribution in three-track tau decays. Including both statistical and systematic uncertainties, the 95%-confidence-level limit is m/sub ..nu../
Published: 1987
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14. Measurement of theϒmass

Author: R. T. Giles, M. Hempstead, J. Hassard, Richard Wilson, L. N. Hand, K. Kinoshita, F. M. Pipkin, and W. W. MacKay
Subjects: Nuclear physics, Physics, Antiparticle, Meson, CLEO, Electron–positron annihilation, Antimatter, Hadron, CUSB, Atomic physics, Cornell Electron Storage Ring
Abstract: We have detected the polarization of the positron beam in the Cornell Electron Storage Ring (CESR) with a polarimeter which detects back-scattered laser light. The beam was resonantly depolarized using a vertical shaker magnet with a rf field, thus measuring the $g\ensuremath{-}2$ frequency. This gave us a precise value for the beam energy in CESR. By scanning the $\ensuremath{\Upsilon}$ resonance with the CUSB detector, we obtained a mass ${M}_{\ensuremath{\Upsilon}}=9459.97\ifmmode\pm\else\textpm\fi{}0.11\ifmmode\pm\else\textpm\fi{}0.07$ MeV. We also give rescaled values for the excited $\ensuremath{\Upsilon}$ states.
Published: 1984
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15. Electroproduction ofK+mesons along the virtual-photon direction

Author: S. W. Raither, F. M. Pipkin, L. K. Sisterson, S.D. Holmes, M. Herzlinger, C. N. Brown, Philip H. Bucksbaum, C. J. Bebek, and C. A. Lichtenstein
Subjects: Baryon, Physics, Nuclear physics, Particle physics, Meson, Deuterium, Hadron, Hyperon, Virtual particle, Elementary particle, Boson
Abstract: We report measurements of kaon electroproduction from hydrogen and deuterium targets carried out at the Wilson Synchrotron Laboratory at Cornell University. The reactions ..gamma../sub V/p ..-->.. K/sup +/X/sup 0/, K/sup +/..lambda.., and K/sup +/..sigma../sup 0/ were studied in the kinematic region 2.15 .. 0 as Q/sup 2/ increases.
Published: 1977
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16. Production ratios for hadrons produced in muon-proton inelastic scattering at 219 GeV

Author: W. R. Francis, H. S. Matis, R. G. Hicks, F. M. Pipkin, T. W. Quirk, Richard Wilson, W. D. Shambroom, J. Proudfoot, L. C. Myrianthopoulos, A. L. Sessoms, C. Tao, W. A. Loomis, Herbert L. Anderson, T. Kirk, W. W. Kinnison, L. W. Mo, S. C. Wright, B. A. Gordon, W. S. C. Williams, N. E. Booth, and Andris Skuja
Subjects: Nuclear physics, Physics, Quasielastic scattering, Muon, Proton, Quasielastic neutron scattering, Hadron, Inelastic scattering, Deep inelastic scattering
Published: 1981
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17. Measurement of the muonic branching fractions of the Υ(1S) and Υ(3S)

Author: C. O'Grady, M. Procario, N. Horwitz, Tomasz Skwarnicki, L. Garren, A. Silverman, D. L. Hartill, R. Poling, Ha Lam, W. M. Yao, D. Besson, E. H. Thorndike, F. M. Pipkin, M. Sapper, C. Bebek, T. Letson, D. H. Miller, Richard Wilson, W. Y. Chen, M. S. Alam, Sheldon Stone, John Yelton, Paul Avery, M. Pisharody, F. Morrow, Karl Berkelman, H. Worden, Thomas Ferguson, M. Goldberg, J. Kandaswamy, W. C. Li, Persis S. Drell, T. Jensen, D. Peterson, D. M. Coffman, B. K. Heltsley, R. Fulton, D. Xiao, S. Nandi, A. M. Halling, J. D. Lewis, J. Wolinski, D. Riley, Elliott Cheu, Ian Brock, M. Worris, Glen D. Crawford, E. Blucher, D. L. Kreinick, M. D. Mestayer, H. Kagan, R. Kowalewski, C. R. Sun, S. W. Gray, R. L. McIlwain, R. D. Kass, M. Hempstead, Themistocles Bowcock, R. Namjoshi, S. E. Csorna, J. Byrd, C. H. Park, A. J. Sadoff, D. R. Johnson, N. B. Mistry, Xinchou Lou, K. Kinoshita, D. G. Cassel, N. Katayama, E. Nordberg, A. Jawahery, C. R. Ng, Marina Artuso, Daniela Bortoletto, J. W. Dewire, V. Sharma, B. Gittelman, R. Ehrlich, I. J. Kim, D. Perticone, R. S. Galik, Y. Kubota, J. Whitmore, P. Haas, James Mueller, Philip Baringer, R. DeSalvo, G. C. Moneti, E. I. Shibata, and Ian Shipsey
Subjects: Physics, Analytical chemistry, Atomic physics, Cornell Electron Storage Ring
Abstract: Author(s): Chen, W; McIlwain, RL; Miller, DH; Ng, CR; Shibata, EI; Yao, W; Thorndike, EH; Alam, MS; Katayama, N; Kim, IJ; Li, WC; Lou, XC; Sun, CR; Bortoletto, D; Goldberg, M; Horwitz, N; Mestayer, MD; Moneti, GC; Sharma, V; Shipsey, IP; Skwarnicki, T; Csorna, SE; Letson, T; Brock, IC; Ferguson, T; Artuso, M; Bebek, C; Berkelman, K; Blucher, E; Byrd, J; Cassel, DG; Cheu, E; Coffman, DM; Crawford, G; DeSalvo, R; DeWire, JW; Drell, PS; Ehrlich, R; Galik, RS; Gittelman, B; Gray, SW; Halling, AM; Hartill, DL; Heltsley, BK; Kandaswamy, J; Kowalewski, R; Kreinick, DL; Kubota, Y; Lewis, JD; Mistry, NB; Mueller, J; Namjoshi, R; Nandi, S; Nordberg, E; O'Grady, C; Peterson, D; Pisharody, M; Riley, D; Sapper, M; Silverman, A; Stone, S; Worden, H; Worris, M; Sadoff, AJ | Abstract: Using the CLEO detector at the Cornell Electron Storage Ring, we have measured the muonic branching fractions B of the (1S) and (3S) to be (2.520.070.07)% and (2.020.190.33)%, respectively. © 1989 The American Physical Society.
Published: 1989
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18. Hadron production in muon-proton and muon-deuteron collisions

Author: T. B. W. Kirk, T. W. Quirk, S. H. Pordes, B. A. Gordon, W. A. Loomis, L. C. Myrianthopoulos, L. W. Mo, W. R. Francis, W. D. Shambroom, Herbert L. Anderson, W. S. C. Williams, N. E. Booth, L. J. Verhey, R. H. Heisterberg, G. I. Kirkbride, V. K. Bharadwaj, A. Skuja, H. S. Matis, R. G. Hicks, S. C. Wright, M. A. Staton, F. M. Pipkin, R. M. Fine, and Richard Wilson
Subjects: Physics, Particle physics, Muon, Proton, Scattering, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Virtual particle, Inelastic scattering, Jet (particle physics), Nuclear physics, High Energy Physics::Experiment, Neutron, Nuclear Experiment
Abstract: This paper reports measurements of the hadrons produced in the inelastic scattering of 147-GeV muons by protons and deuterons in an experiment carried out at Fermi National Accelerator Laboratory. Both the scattered muon and the hadrons were measured in a large spectrometer. Properties of the hadron spectra are presented for proton, deuteron, and neutron targets and compared with theoretical models and with hadron spectra from related processes. Emphasis is placed on the quark-parton model and the data are found to be in substantial agreement with it. The average transverse momentum of the hadrons with respect to the virtual photon direction shows no dependence on the muon scattering variables. The data display "jet behavior" of the inclusive hadrons comparable to that found in ${e}^{+}{e}^{\ensuremath{-}}$ annihilations.
Published: 1979
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19. Spectrometer study ofφ-meson electroproduction

Author: M. Herzlinger, R. Dixon, A. Silverman, S.D. Holmes, F. M. Pipkin, R.L. Wagner, S. W. Raither, R. S. Galik, and D. Larson
Subjects: Nuclear physics, Quark, Physics, Particle physics, Particle decay, Meson, Hadron, High Energy Physics::Experiment, Elementary particle, Phi meson, Helicity, Boson
Abstract: We report measurements of the electroproduction of phi mesons from hydrogen at Q/sup 2/ values of 0.23, 0.43, and 0.97 GeV/sup 2/ with vertical-bartvertical-bar varying from 0.125 to 1.3 GeV/sup 2/ at each Q/sup 2/ point. The data show no evidence for a Q/sup 2/ dependence of the slope of the t distribution, the forward cross section falls with increasing Q/sup 2/ as the square of the phi propagator, the decay angular distributions agree with the predictions of s-channel helicity conservation, and the ratio of the longitudinal to the transverse component increases linearly with Q/sup 2/.
Published: 1979
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20. Charm production in nonresonante+e−annihilations at√s =10.55 GeV

Author: D. G. Cassel, Thomas Ferguson, W. C. Li, Daniela Bortoletto, T. Jensen, Ian Brock, J. W. Dewire, V. Tanikella, R. Kowalewski, Murdock Gilchriese, B. Gittelman, R. DeSalvo, R. S. Galik, Y. Kubota, G. C. Moneti, I. J. Kim, M. Procario, Ian Shipsey, D. Perticone, S. Holzner, S. Behrends, E. H. Thorndike, D. Riley, D. R. Johnson, N. B. Mistry, F. M. Pipkin, L. Garren, A. M. Halling, D. Besson, S. E. Csorna, M. S. Alam, F. Morrow, E. Blucher, E. I. Shibata, G. B. Word, Xinchou Lou, K. Kinoshita, A. Silverman, Ron Poling, M. Hempstead, C. Bebek, Joan A. Guida, J. Kandaswamy, R. W. Kraemer, R. S. Panvini, G. J. Bobbink, A. Jawahery, J. Wolinski, R. Namjoshi, Paul Tipton, S. W. Gray, Jan M. Guida, D. Peterson, D. Xiao, H. Kagan, Sheldon Stone, Paul Avery, T. Letson, D. H. Miller, T. Copie, M. Goldberg, Richard Wilson, M. D. Mestayer, C. R. Sun, A. J. Sadoff, R. L. McIlwain, R. D. Kass, T. J. V. Bowcock, D. L. Hartill, P. Haas, P. Lubrano, Hans J. Vogel, R. Holmes, N. Katayama, P. Thoma, N. Horwitz, Alice Bean, M. Pisharody, Karl Berkelman, D. L. Kreinick, B. K. Heltsley, Kenneth Francis Read, E. Nordberg, V. Sharma, R. Ehrlich, P. Baringer, and James Mueller
Subjects: Nuclear physics, Quantum chromodynamics, Charmed baryons, Baryon, Physics, Particle physics, Annihilation, Meson, Electron–positron annihilation, Hadron, Charm (quantum number), GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries)
Abstract: This is the publisher's version also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.37.1719
Published: 1988
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21. Further measurements of forward-charged-pion electroproduction at largek2

Author: D. L. Hartill, Karl Berkelman, M. Herzlinger, L. K. Sisterson, C. N. Brown, C. J. Bebek, F. M. Pipkin, D. Andrews, S.D. Holmes, C. A. Lichtenstein, and D. G. Cassel
Subjects: Physics, Particle physics, Pion, Momentum transfer, Form factor (quantum field theory), Virtual particle, Electron, Angular scan, Nuclear Experiment, Energy (signal processing)
Abstract: Measurements of the electroproduction reaction ${e}^{\ensuremath{-}}+p\ensuremath{\rightarrow}{e}^{\ensuremath{-}}+{\ensuremath{\pi}}^{+}+n$ carried out at the Wilson Synchrotron Laboratory are reported. For fixed virtual photon-hadron center-of-mass energy, $W=2.67$ GeV, data are presented with the mass of the virtual photon, $\ensuremath{-}{k}^{2}$, centered at 0.6, 1.2, and 2.0 Ge${\mathrm{V}}^{2}$. At the central $\ensuremath{-}{k}^{2}=1.2$ ${(\mathrm{GeV})}^{2}$ point, results are also given for $W=2.15$ GeV. For the $W=2.67$, $\ensuremath{-}{k}^{2}=1.2$ Ge${\mathrm{V}}^{2}$ setting, an angular scan is presented and the longitudinal transverse-interference term is extracted. The data are compared with an electron Born-model calculation of Berends which has as its only free parameter the pion electromagnetic form factor. The theory is used to extract new results for the pion form factor up to $\ensuremath{-}{k}^{2}=2.0$ Ge${\mathrm{V}}^{2}$.
Published: 1974
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22. Improved upper limit on flavor-changing neutral-current decays of thebquark

Author: A. M. Halling, I. J. Kim, S. W. Gray, Murdock Gilchriese, Chih-Ree Sun, D. Perticone, P. Lubrano, B. Gittelman, S. Holzner, S. Behrends, Xinchou Lou, D. Riley, T. Copie, C. Bebek, R. Holmes, A. Engler, W. C. Li, Paul Tipton, T. Jensen, Thomas Ferguson, M. Hempstead, N. Horwitz, Themistocles Bowcock, L. Garren, R. S. Galik, Y. Kubota, Ron Poling, Ian Shipsey, A. Chen, Harris Kagan, Alice Bean, E. H. Thorndike, Joan A. Guida, E. Nordberg, F. M. Pipkin, J. Kandaswamy, P. Thoma, R. W. Kraemer, Jan M. Guida, G. B. Word, S. E. Csorna, F. Morrow, V. Tanikella, A. Silverman, D. Peterson, M. Pisharody, Karl Berkelman, R. S. Panvini, G. J. Bobbink, K. Kinoshita, C. Rippich, D. Xiao, D. G. Cassel, Ian Brock, R. Kowalewski, Hans J. Vogel, R. D. Kass, A. J. Sadoff, R. DeSalvo, J. Wolinski, Richard Wilson, G. C. Moneti, N. Katayama, N. B. Mistry, P. Haas, Sheldon Stone, Paul Avery, A. Jawahery, E. Blucher, M. Goldberg, R. Namjoshi, M. S. Alam, M. D. Mestayer, Daniela Bortoletto, James Mueller, J. W. Dewire, V. Sharma, R. Ehrlich, D. Besson, M. Procario, D. L. Hartill, B. K. Heltsley, Kenneth Francis Read, and D. L. Kreinick
Subjects: Physics, Particle decay, Particle physics, Meson, Branching fraction, Electron–positron annihilation, Flavor-changing neutral current, High Energy Physics::Phenomenology, Hadron, High Energy Physics::Experiment, B meson, Bottom quark
Abstract: We report the results of a new search for flavor-changing neutral-current decays of the b quark and present a 90%-confidence-level upper limit for the branching fraction for B\ensuremath{\rightarrow}${l}^{+}$${l}^{\mathrm{\ensuremath{-}}}$X of 1.2\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}3}$.
Published: 1987
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23. Diffractive production of vector mesons in muon-proton scattering at 150 and 100 GeV

Author: L. J. Verhey, G. I. Kirkbride, T. W. Quirk, R. H. Heisterberg, S. C. Wright, W. A. Loomis, H. S. Matis, R. G. Hicks, L. W. Mo, F. M. Pipkin, V. K. Bharadwaj, R. M. Fine, W. S. C. Williams, W. R. Francis, W. D. Shambroom, Herbert L. Anderson, N. E. Booth, S. H. Pordes, Richard Wilson, L. C. Myrianthopoulos, T. B. W. Kirk, B. A. Gordon, and A. Skuja
Subjects: Nuclear physics, Physics, Particle physics, Muon, Proton, Meson, Hadron, Production (computer science), Elementary particle, Helicity, Boson
Abstract: We have studied the production of $\ensuremath{\rho}$ and $\ensuremath{\varphi}$ mesons from muon scattering on a liquidhydrogen target at 150 and 100 GeV. For the $\ensuremath{\rho}$ we observe a skewed mass distribution which becomes somewhat more normal with increasing ${Q}^{2}$ (the square of the four-momentum transferred from the muon), and an exponential distribution in $t$ (the square of the four-momentum transferred to the target proton) with a slope which is consistent with a slight decrease as ${Q}^{2}$ increases. The dependence of the cross section on ${Q}^{2}$ follows that of the square of the $\ensuremath{\rho}$ propagator with little contribution from longitudinal $\ensuremath{\rho}$ production. The angular distribution of the $\ensuremath{\rho}$ decay confirms the smallness of the contribution from longitudinal $\ensuremath{\rho}$ production at our energies. The cross section when extrapolated to ${Q}^{2}=0$ agrees with that measured in real photoproduction. The decay angular distribution of the $\ensuremath{\rho}$ decay shows that $s$-channel helicity is largely conserved, although we detect a helicity-single-flip contribution at the 10-15% level. Natural-parity exchange in the $t$ channel dominates, and the transverse and longitudinal amplitudes are found to be in phase. These characteristics are consistent with the diffractive nature of the vectordominance model. The $t$ distribution of $\ensuremath{\varphi}$ production is also exponential, although less steep than that for the $\ensuremath{\rho}$. We observe an elastically produced four-pion state at a mass of approximately 1600 MeV. We identify this state with the ${\ensuremath{\rho}}^{\ensuremath{'}}(1600)$, and find it to be produced with a distribution exponential in $t$.
Published: 1982
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24. Study of the decayB→ψX

Author: Jan M. Guida, C. Rippich, T. Copie, Chih-Ree Sun, Ron Poling, R. D. Kass, D. Perticone, S. Holzner, S. Behrends, I. J. Kim, J. Wolinski, C. Bebek, M. Pisharody, S. W. Gray, N. Katayama, Karl Berkelman, P. Lubrano, Joan A. Guida, Richard Wilson, E. H. Thorndike, J. Kandaswamy, Sheldon Stone, D. G. Cassel, M. D. Mestayer, B. K. Heltsley, A. Jawahery, Kenneth Francis Read, Paul Avery, F. M. Pipkin, R. Kraemer, R. Holmes, A. Engler, Alice Bean, D. Riley, A. Chen, T. J. V. Bowcock, J. Hassard, A. Silverman, R. S. Panvini, D. Peterson, Ian Brock, Thomas Ferguson, R. Kowalewski, M. Hempstead, H. Kagan, R. DeSalvo, T. Jensen, M. Goldberg, G. C. Moneti, E. Nordberg, R. S. Galik, N. Horwitz, D. L. Kreinick, Y. Kubota, M. Ogg, S. E. Csorna, N. B. Mistry, A. J. Sadoff, E. Blucher, R. Namjoshi, P. Haas, Murdock Gilchriese, B. Gittelman, D. Xiao, M. Ito, R.B. Sutton, F. Morrow, Hans J. Vogel, R. T. Giles, K. Kinoshita, C. Rosenfeld, M. S. Alam, G. B. Word, Paul Tipton, L. Garren, Daniela Bortoletto, J. W. Dewire, D. Besson, D. L. Hartill, T. Gentile, Xia Yi, G. J. Bobbink, James Mueller, V. Sharma, R. Ehrlich, V. Tanikella, and A. M. Halling
Subjects: Physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, Quark model, Mass spectrum, Analytical chemistry, B meson, Elementary particle
Abstract: We have measured the inclusive branching ratio for B..-->..psiX to be (1.09 +- 0.16 +- 0.21)%, and the exclusive branching ratios for B/sup -/..-->..psiK/sup -/ and B-bar /sup 0/..-->..psiK-bar /sup *//sup 0/ to be (0.09 +- 0.05)% and (0.41 +- 0.18)%, respectively. The mass difference between neutral and charged B mesons is 1.1 +- 2.1 MeV, while the difference between the mass of UPSILON(4S) and twice the mean B-meson mass is 18.5 +- 3.0 MeV. The psi momentum distribution implies a substantial two-body decay (in agreement with direct measurements), but also some combination of B..-->..psiX with M/sub X/>1.5 GeV, and B..-->..psi'X.
Published: 1986
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25. Observation of the decay B¯D+0ρ−

Author: Xia Yi, M. S. Alam, Robert Stone, Xu Kezun, Joan A. Guida, J. Kandaswamy, A. Jawahery, L. Garren, M. Halling, M. D. Mestayer, C. G. Trahern, R. T. Giles, R. Ehrlich, D. Peterson, D. L. Kreinick, M. Ito, P. Skubic, P. C. Stein, C. Bebek, G. Parkhurst, D. Besson, P. Avery, Kenneth Francis Read, S. E. Csorna, E. H. Thorndike, A. Chen, F. M. Pipkin, M. Goldberg, P. Haas, N. B. Mistry, F. Sannes, Karl Berkelman, G. C. Moneti, T. Ferguson, R. Namjoshi, K. Kinoshita, C. Rosenfeld, D. Perticone, S. Holzner, R. S. Galik, Sheldon Stone, S. Behrends, M. Ogg, And H. Van Hecke, R. D. Kass, N. Horwitz, Paul Tipton, R. DeSalvo, E. Nordberg, D. L. Hartill, Ron Poling, M. Hempstead, W. W. MacKay, H. Kagan, Richard Wilson, A. J. Sadoff, J. Hassard, A. Silverman, D. G. Cassel, T. Copie, J. W. Dewire, T. Jensen, Jan M. Guida, Y. Kubota, Murdock Gilchriese, B. Gittelman, R. S. Panvini, F. Morrow, T. Gentile, and James C. Green
Subjects: Physics, Particle physics, Particle decay, Pair production, Pion, Meson, Branching fraction, Hadron, Elementary particle, B meson
Abstract: The decay B-bar /sup 0/..-->..D/sup asterisk+/rho/sup -/ has been observed and the branching ratio is found to be (8.1 +- 2.9/sub -2.4//sup +5.9/)%. The result is compared with theoretical predictions.
Published: 1985
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26. Total cross section for electron-positron annihilation into hadron final states in the upsilon energy region

Author: Ron Poling, Harris Kagan, R. S. Galik, Y. Kubota, P. Avery, M. Hempstead, R. Perchonok, A. Jawahery, Robert Stone, Sheldon Stone, R. D. Kass, Murdock Gilchriese, J. W. Dewire, K. Chadwick, B. Gittelman, G. Rucinski, E. H. Thorndike, R. T. Giles, H. Van Hecke, L. Garren, G. C. Moneti, A. C. Melissinos, F. M. Pipkin, C. Bebek, M. Ogg, T. Gentile, G. Parkhurst, T. Ferguson, P. Skubic, Karl Berkelman, A. J. Sadoff, R. Ehrlich, F. Morrow, P. Lipari, Jan M. Guida, N. Horwitz, Xia Yi, A. Chen, W. W. MacKay, D. Weber, F. Sannes, P. Ganci, D. L. Kreinick, M. Ito, R. G. Hicks, Paul Tipton, J. Hassard, M. S. Alam, D. Peterson, S. L. Olsen, D. Herrup, A. Silverman, R. Plunkett, D. G. Cassel, D. L. Hartill, R. Wilcke, M. Goldberg, E. Nordberg, James C. Green, Richard Wilson, T. Jensen, S. Holzner, S. Behrends, R. Namjoshi, M. D. Mestayer, J. Chauveau, M. Halling, C. G. Trahern, P. Haas, D. Besson, R. S. Panvini, A. Snyder, P. C. Stein, S. E. Csorna, Joan A. Guida, J. Kandaswamy, C. Rosenfeld, K. Kinoshita, and N. B. Mistry
Subjects: Nuclear physics, Physics, Particle physics, Particle decay, Muon, Meson, Electron–positron annihilation, Production (computer science), Continuum (set theory), Cornell Electron Storage Ring, Energy (signal processing)
Abstract: We report measurements made with the CLEO detector at the Cornell Electron Storage Ring (CESR) of the total cross section for ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathrm{hadrons}$ at the $\ensuremath{\Upsilon}(1S)$, $\ensuremath{\Upsilon}(2S)$, and $\ensuremath{\Upsilon}(3S)$, and in the nearby nonresonant continuum. We find $R=3.77\ifmmode\pm\else\textpm\fi{}0.06 (\mathrm{statistical}) \ifmmode\pm\else\textpm\fi{} 0.24 (\mathrm{systematic})$ for the ratio of the nonresonant hadronic cross section to the cross section for muon-pair production at a center-of-mass total energy $W=10.4$ GeV. For the leptonic decay widths ${\ensuremath{\Gamma}}_{\mathrm{ee}}$ of the $\ensuremath{\Upsilon}(1S)$, $\ensuremath{\Upsilon}(2S)$, and $\ensuremath{\Upsilon}(3S)$ we obtain 1.30\ifmmode\pm\else\textpm\fi{}0.05\ifmmode\pm\else\textpm\fi{}0.08, 0.52\ifmmode\pm\else\textpm\fi{}0.03\ifmmode\pm\else\textpm\fi{}0.04, and 0.42\ifmmode\pm\else\textpm\fi{}0.04\ifmmode\pm\else\textpm\fi{}0.03 keV, respectively.
Published: 1984
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27. Semileptonic decays ofBmesons

Author: E. H. Thorndike, N. B. Mistry, P. Avery, F. M. Pipkin, F. Morrow, M. Herzlinger, D. Herrup, G. Rucinski, J. S. Dewire, A. Snyder, A. J. Sadoff, M. S. Alam, N. Horwitz, W. Tanenbaum, Ron Poling, R. Perchonok, D. Weber, Joan A. Guida, J. Kandaswamy, P. Pistilli, A. C. Melissinos, D. Andrews, R. S. Panvini, K. Chadwick, Sheldon Stone, H. Kooy, A. Fridman, A. Silverman, T. Gentile, T. Ferguson, Robert Stone, M. Hempstead, R. Cabenda, D. L. Hartill, R. Plunkett, C. Rosenfeld, S. L. Olsen, A. Chen, James C. Green, C. J. Bebek, R. D. Kass, G. C. Moneti, J. Chauveau, F. Sannes, J. Haggerty, R. Ehrlich, W. W. MacKay, Joseph Izen, Richard Wilson, P. Ganci, D. G. Cassel, A. Brody, D. L. Kreinick, R. G. Hicks, J. Rohlf, P. C. Stein, S. E. Csorna, M. Goldberg, Harris Kagan, R. Wilcke, Murdock Gilchriese, B. Gittelman, J. Mueller, W. A. Loomis, E. Nordberg, and P. Skubic
Subjects: Semileptonic decay, Physics, Particle physics, Meson, Branching fraction, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Nuclear physics, Particle decay, High Energy Physics::Experiment, B meson, Nuclear Experiment, Lepton
Abstract: We have studied the production of B mesons in e/sup +/e/sup -/ annihilations and present new measurements of the semileptonic branching fractions for B-meson decay. We find B(B..-->..e..nu..X) = 0.127 +- 0.017 +- 0.013 and B(B..--> mu nu..X) = 0.122 +- 0.017 +- 0.031, where the errors are statistical and systematic, respectively. The observed lepton momentum spectra from B decays are presented. From these spectra we find the mean hadronic mass (M/sub X/) recoiling against the detected lepton to be M/sub X/ = 2.2 +- 0.2 GeV/c/sup 2/. We have also observed an enhancement in the lepton yield from the continuum above BB-bar threshold. This enhancement is interpreted as continuum B production and is consistent with what is expected from the naive quark model.
Published: 1983
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28. High-statistics study ofϒ(2S)→π+π−ϒ(1S)

Author: D. L. Hartill, Ron Poling, Y. Kubota, S. Holzner, S. Behrends, M. Goldberg, G. C. Moneti, Richard Wilson, R. Namjoshi, Paul Tipton, Joan A. Guida, J. Kandaswamy, D. G. Cassel, M. Hempstead, R. Wilcke, S. L. Olsen, Murdock Gilchriese, T. Gentile, B. Gittelman, L. Garren, W. W. MacKay, R. D. Kass, E. H. Thorndike, A. Chen, M. Ogg, H. Van Hecke, J. W. Dewire, F. M. Pipkin, F. Sannes, N. B. Mistry, R. Ehrlich, Jan M. Guida, C. Bebek, G. Parkhurst, M. D. Mestayer, M. S. Alam, D. Weber, R. S. Panvini, R. G. Hicks, Xia Yi, F. Morrow, Karl Berkelman, J. Hassard, A. Silverman, N. Horwitz, R. S. Galik, H. Kagan, M. Ito, J. Chauveau, M. Halling, R. T. Giles, A. C. Melissinos, A. J. Sadoff, C. G. Trahern, P. Avery, P. Haas, Robert Stone, D. Besson, P. C. Stein, S. E. Csorna, James C. Green, K. Kinoshita, C. Rosenfeld, P. Lipari, D. Peterson, T. Jensen, Sheldon Stone, K. Chadwick, E. Nordberg, T. Ferguson, P. Skubic, A. Jawahery, D. L. Kreinick, and A. Snyder
Subjects: Physics, Particle decay, Pion, Meson, Branching fraction, Electron–positron annihilation, Hadron, Analytical chemistry, Elementary particle, Cornell Electron Storage Ring
Abstract: A detailed investigation of the decay UPSILON(2S)..--> pi../sup +/..pi../sup -/UPSILON(1S) has been made from 128 000 UPSILON(2S) decays observed in the CLEO detector at the Cornell Electron Storage Ring (CESR). We find this branching ratio to be (19.1 +- 1.2 +- 0.6)%. The properties of the ..pi pi.. system have been studied using 491 exclusive events of the type UPSILON(2S)..--> pi../sup +/..pi../sup -/UPSILON(1S), UPSILON(1S)..-->..e/sup +/e/sup -/ or ..mu../sup +/..mu../sup -/. Assuming e-..mu.. universality we find B(UPSILON(1S)..--> mu../sup +/..mu../sup -/) = (2.84 +- 0.18 +- 0.20)%. A search for UPSILON(2S)..-->..etaUPSILON(1S) yields an upper limit of 1% at the 90% confidence level for this branching ratio. We have also searched for (UPSILON(2S) or UPSILON(3S))..--> pi../sup +/..pi../sup -/UPSILON(1S), UPSILON(1S)..-->..noninteracting particles.
Published: 1984
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29. Investigation of the total charm-pair cross section in nonresonante+e−annihilations at√s =10.5GeV

Author: Ian Shipsey, C. Bebek, E. Nordberg, J. Wolinski, A. Silverman, M. Goldberg, M. Pisharody, Karl Berkelman, S. E. Csorna, V. Tanikella, K. Kinoshita, D. Perticone, T. Copie, I. J. Kim, F. M. Pipkin, A. M. Halling, L. Garren, J. D. Lewis, D. L. Kreinick, M. Worris, N. Horwitz, E. Blucher, D. H. Miller, R. Namjoshi, R. DeSalvo, T. J. V. Bowcock, B. Gittelman, D. R. Johnson, G. C. Moneti, C. R. Sun, R. D. Kass, A. Jawahery, E. I. Shibata, J. Kandaswamy, D. L. Hartill, R. Holmes, Xinchou Lou, C. Ray Ng, S. Nandi, S. W. Gray, D. M. Coffman, D. Peterson, M. Procario, B. K. Heltsley, F. Morrow, D. G. Cassel, D. Riley, Ian Brock, Sheldon Stone, D. Xiao, R. Kowalewski, Paul Avery, W. C. Li, N. B. Mistry, M. Hempstead, T. Jensen, Thomas Ferguson, Hans J. Vogel, N. Katayama, Richard Wilson, R. S. Galik, Y. Kubota, P. Haas, M. D. Mestayer, R. L. McIlwain, D. Besson, P. Baringer, Daniela Bortoletto, J. W. Dewire, M. S. Alam, H. Kagan, J. Byrd, A. J. Sadoff, Ron Poling, James Mueller, V. Sharma, and R. Ehrlich
Subjects: Nuclear physics, Hadronic decay, Physics, Particle physics, Meson, Electron–positron annihilation, Hadron, Elementary particle, Boson
Abstract: We report results from two new methods for measuring the total production of charmed particles in nonresonant e/sup +/e/sup -/ annihilations at ..sqrt..s = 10.5 GeV. The rate for detection of events containing two reconstructed charmed mesons relative to that for events containing one is used to extract information about total charm production independent of decay branching fractions. The value of ..delta..R/sub c//sub c-bar/, the total charm-pair cross section normalized to the pointlike ..mu..-pair cross section, is found to be 1.13/sub -0.13//sup +0.17/ +- 0.09, under an assumption of limited particle correlations. In an independent analysis the inclusive cross section for e/sup +/e/sup -/..-->..qq-bar..-->..e/sup +- /X is measured to be 0.293 +- 0.017 +- 0.017 nb. Using measured relative production rates and semileptonic branching fractions of D/sup 0/ and D/sup +/ mesons and estimates of these quantities for D/sub s/ and ..lambda../sub c/, this is found to correspond to ..delta..R/sub c//sub c-bar/ = 2.07 +- 0.12 +- 0.26. These two measurements are discussed in the context of measurements made by reconstruction of exclusive hadronic decay modes and of theoretical expectations.
Published: 1988
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30. Photoproduction of high-mass kaon pairs

Author: C. J. Bebek, F. M. Pipkin, D. Peterson, M. Herzlinger, R. Ehrlich, R.L. Wagner, R. S. Galik, A. Silverman, D. Larson, S. W. Raither, and R. Dixon
Subjects: Physics, Particle physics, Meson, Branching fraction, Nuclear Theory, Hadron, Bremsstrahlung, Particle identification, Nuclear physics, Pion, Pair production, Mass spectrum, High Energy Physics::Experiment, Nuclear Experiment
Abstract: This paper reports a measurement of the photoproduction of charged-kaon pairs from hydrogen which was carried out to search for high-mass resonances in the mass range from 1.4 to 2.4 GeV. The only structure observed in the mass spectrum was a dip near 1.83 GeV. An analysis of the data indicates that this structure could be produced by a high-mass meson with a mass of about 1.83 GeV and a width of roughly 120 MeV which interfers with the kaon Soeding amplitude.
Published: 1978
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31. Electroproduction of forward protons up toQ2=9.5GeV2

Author: L. K. Sisterson, D. Larson, C. N. Brown, F. M. Pipkin, K. M. Hanson, S. W. Raither, R. V. Kline, C. J. Bebek, A. Browman, and A. Silverman
Subjects: Nuclear physics, Baryon, Physics, Particle physics, Proton, Deuterium, Hadron, Quark model, Parton, Elementary particle, Nucleon
Abstract: We report new measurements of inclusive proton electroproduction. Data were taken with a hydrogen target at the (W,Q/sup 2/) points (2.2 GeV, 1.2 GeV/sup 2/), (2.7, 2.0), (2.7, 3.3), (2.7, 6.2), and (2.7, 9.5) and with a deuterium target at (2.2, 1.2), (2.7, 2.0), (2.7, 6.2), and (2.7, 9.5). The invariant structure function is studied as a function of W, Q/sup 2/, ..omega.., and x'. The data are compared with the predictions of the constituent-interchange model.
Published: 1977
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32. Measurement of the nucleon structure functions

Author: T. W. Quirk, V. K. Bharadwaj, L. C. Myrianthopoulos, W. D. Shambroom, S. C. Wright, W. R. Francis, T. Kirk, Andris Skuja, J. Proudfoot, Nicola Booth, W. W. Kinnison, H. S. Matis, L. J. Verhey, Charling Tao, A. L. Sessoms, W. S. C. Williams, R. G. Hicks, L. W. Mo, M. A. Staton, Herbert L. Anderson, S. H. Pordes, W. A. Loomis, Brittney Gordon, F. M. Pipkin, R. M. Fine, G. I. Kirkbride, R. H. Heisterberg, and Richard Wilson
Subjects: Quantum chromodynamics, Baryon, Nuclear physics, Coupling constant, Physics, Particle physics, Muon, Hadron, Quark model, Inelastic scattering, Nucleon
Abstract: Measurements have been made of the inclusive scattering of 96, 147, and 219 GeV muons from hydrogen, and of 147 GeV muons from deuterium. Results are presented for the nucleon structure function F/sub 2/(x,Q/sup 2/) (equivalent..nu..W/sub 2/(x,Q/sup 2/)) for 10 < ..nu.. < 200 GeV and 0.2 < Q/sup 2/ < 80 GeV/sup 2/. The value of F/sub 2/ rises with Q/sup 2/ at small x, and falls with Q/sup 2/ at large x, in agreement with the ideas of quantum chromodynamics. An average value of the ratio sigma/sub L//sigma/sub T/ equivalent R = 0.52 +- 0.35 has been obtained for the region 0.003 < x < 0.10 and 0.4 < Q/sup 2/ < 30 GeV/sup 2/. The values of F/sub 2/ from this experiment have been combined with those from other charged-lepton scattering experiments to determine moments of the structure functions. The variation with Q/sup 2/ of these moments is used to derive values for ..lambda.., taking into account corrections up to second order in ..cap alpha../sub s/. The fit to the data is very good.
Published: 1979
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33. Electroproduction of forwardΛbaryons

Author: F. M. Pipkin, R.L. Wagner, R. S. Galik, S.D. Holmes, R. Dixon, M. Herzlinger, A. Silverman, D. Larson, and S. W. Raither
Subjects: Baryon, Physics, Particle physics, Annihilation, Quark model, Hadron, Hyperon, Virtual particle, Elementary particle, Lambda
Abstract: We report measurements of the inclusive electroproduction reaction e + p ..-->.. e + ..lambda.. + anything for ..lambda..'s produced along and near the direction of the virtual photon. The measurements cover the kinematic range 2.1 < W < 3.55 GeV, 0.1 < Q/sup 2/ < 1.5 GeV/sup 2/, 0 < p/sub T//sup ts2/
Published: 1978
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34. 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
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35. Polarization parameters and angular distributions inπ±pelastic scattering at 100 GeV/cand inppelastic scattering at 100 and 300 GeV/c

Author: I. P. Auer, M. E. Zeller, F. M. Pipkin, A. Jonckheere, W. Johnson, R. V. Kline, D. G. Underwood, D. Hill, H. M. Steiner, A. Yokosawa, Gilbert Shapiro, J. H. Snyder, B. Sandler, P. F. M. Koehler, W. Brückner, Owen Chamberlain, and M. E. Law
Subjects: Physics, Elastic scattering, Momentum, Particle physics, Angular distribution, Transverse momentum, Polarization (waves)
Abstract: Measurements of the polarization parameters and angular distributions are reported for ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}p$ elastic scattering at 100 GeV/c and for $\mathrm{pp}$ elastic scattering at 100- and 300-GeV/c incident momentum. The ${\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}p$ data cover the kinematic range $0.18\ensuremath{\le}\ensuremath{-}t\ensuremath{\le}1.10$ Ge${\mathrm{V}}^{2}$ and are in agreement with current Regge-model predictions. The $\mathrm{pp}$ data cover the kinematic range $0.15\ensuremath{\le}\ensuremath{-}t\ensuremath{\le}1.10$ Ge${\mathrm{V}}^{2}$ and $0.15\ensuremath{\le}\ensuremath{-}t\ensuremath{\le}2.00$ Ge${\mathrm{V}}^{2}$ at 100 and 300 GeV/c, respectively, and are found to be consistent with absorption-model predictions.
Published: 1980
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36. Inclusive charged-pion electroproduction

Author: F. M. Pipkin, S. W. Raither, S.D. Holmes, L. K. Sisterson, C. A. Lichtenstein, C. J. Bebek, M. Herzlinger, and C. N. Brown
Subjects: Nuclear physics, Physics, Particle physics, Pion, Deuterium, Meson, Hadron, Elementary particle, Parton, Omega, Boson
Abstract: We report measurements of semi-inclusive pion electroproduction from both hydrogen and deuterium targets carried out at the Wilson Synchrotron Laboratory at Cornell University. Measurements were made at the (W,Q/sup 2/) points (2.15 GeV, 1.2 GeV/sup 2/), (2.15, 4.0), and (3.11, 1.2) with hydrogen and deuterium, and at (2.15, 2.0), (2.67, 3.3), and (3.11, 1.7) with hydrogen only. The invariant virtual-photoproduction cross section for pions scaled by the total cross section is studied as a function of x', P/sub T/ /sup 2/, W, and Q/sup 2/. The invariant structure function shows no Q/sup 2/ dependence and a weak W dependence. The ratio of ..pi../sup +/ to ..pi../sup -/ production is also presented, but a distinction between a universal ..omega.. or W dependence cannot be made.
Published: 1977
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37. 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
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38. Determination of the pion form factor up toQ2=4GeV2from single-charged-pion electroproduction

Author: C. J. Bebek, C. N. Brown, S. W. Raither, S.D. Holmes, L. K. Sisterson, F. M. Pipkin, M. Herzlinger, and C. A. Lichtenstein
Subjects: Physics, Nuclear physics, Pion, Meson, Deuterium, Isovector, Isoscalar, Hadron, Form factor (quantum field theory), Nucleon
Abstract: New measurements of the electroproduction of single charged pions hydrogen and deuterium targets carried out at the Wilson Synchrotron at Cornell University are reported. Measurements were made at the (W, Q$sup 2$) points (2.15 GeV, 1.2 GeV$sup 2$), (2.15, 4.0), and (3.11, 1.2) with hydrogen and deuterium and at (2.15, 2.0), (2.67, 3.4), and (3.11, 1.7) with only hydrogen. The deuterium data were used to determine the ratio of the cross sections for the reactions $gamma$/subV/d $Yields$ $pi$$sup +$nn/subs/ and $gamma$/subV/d $Yields$ $pi$$sup -$pp/subs/ and thus to measure the isoscalar contribution to the reaction $gamma$/subV/p $Yields$ $pi$$sup +$n. The data are consistent with the hypothesis that this ratio is a universal function of the momentum transfer. The measured ratio was used to determine from the hydrogen data and the data taken in earlier experiments the isovector component of the cross section. The dispersion theory formulated by Berends was then used to determine from the isovector component the pion form factor in the Q$sup 2$ range from 0.2 to 4.0 GeV$sup 2$. A simple pole expression of the form 1 + Q$sup 2$/(0.471 +- 0.010)$sup -1$ gives a good fit to the data. (AIP)
Published: 1976
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39. Electroproduction of single pions at lowεand a measurement of the pion form factor up toQ2=10GeV2

Author: K. M. Hanson, R. V. Kline, C. J. Bebek, D. Larson, A. Browman, A. Silverman, C. N. Brown, F. M. Pipkin, S. W. Raither, S.D. Holmes, and L. K. Sisterson
Subjects: Nuclear physics, Physics, Particle physics, Pion, Distribution (mathematics), Deuterium, Meson, Hadron, Form factor (quantum field theory), Elementary particle, Boson
Abstract: We report measurements of the electroproduction of single charged pions from hydrogen and deuterium targets for values of $\ensuremath{\epsilon}$ in the range $0.35l\ensuremath{\epsilon}l0.45$. Data were taken with a hydrogen target at the ($W, {Q}^{2}$) points (2.15 GeV, 1.2 ${\mathrm{GeV}}^{2}$), (2.65, 2.0), (2.65, 3.4), (2.65, 6.0), and (2.65, 10.0). Data were taken with a deuterium target at the ($W, {Q}^{2}$) points (2.15, 1.2) and (2.65, 2.0). The transverse cross section obtained by using these data in conjunction with earlier data at high $\ensuremath{\epsilon}$ to separate the longitudinal and transverse components is used in conjunction with the new data and the $t$-channel Born term to determine the pion form factor and to re-evaluate previously reported measurements. In the range $0.15 \mathrm{Ge}{\mathrm{V}}^{2}l{Q}^{2}l10.0 \mathrm{Ge}{\mathrm{V}}^{2}$ the pion form factor can be described by the simple pole form ${[1+\frac{{Q}^{2}}{(0.462\ifmmode\pm\else\textpm\fi{}0.024)}]}^{\ensuremath{-}1}$.
Published: 1978
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40. Electroproduction of inclusive pions at highQ2

Author: F. M. Pipkin, R. V. Kline, C. J. Bebek, K. M. Hanson, L. K. Sisterson, A. Browman, C. N. Brown, S. W. Raither, A. Silverman, and D. Larson
Subjects: Physics, Particle physics, Proton, Scalar (mathematics), Virtual particle, Astrophysics::Cosmology and Extragalactic Astrophysics, Nuclear physics, symbols.namesake, Pion, symbols, Feynman diagram, High Energy Physics::Experiment, Production (computer science), Neutron, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, Scaling
Abstract: This paper reports measurements of the inclusive pion electroproduction reaction $e+N\ensuremath{\rightarrow}e+{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}+$ anything with both proton and neutron targets for pions produced along and near the direction of the virtual photon. Two independent purposes of these measurements were to provide data at low $\ensuremath{\epsilon}$ and at high ${Q}^{2}$. Data are reported for the ($W$,${Q}^{2}$,$\ensuremath{\epsilon}$) points (2.2 GeV, 1.2 ${\mathrm{GeV}}^{2}$, 0.45), (2.7, 2.0, 0.35), (2.7, 3.3, 0.40), (2.7, 6.2, 0.40), and (2.7, 9.5, 0.40). The data are used to test Feynman scaling and to compare the ratio of the cross sections for charged-pion production to the quark-model predictions. The data are also used in conjunction with the data from earlier experiments to separate the scalar and transverse components of the cross section.
Published: 1977
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41. Coincidence Electroproduction of Charged Pions and the Pion Form Factor

Author: V. B. Montana, C. N. Brown, F. M. Pipkin, C. A. Lichtenstein, C. R. Canizares, A. M. Eisner, W. Lockeretz, W. E. Cooper, G. J. Feldman, and L. Litt
Subjects: Physics, Particle physics, Pion, Form factor (quantum field theory), Energy (signal processing), Particle identification, Coincidence
Abstract: We report measurements of the electroproduction reaction ${e}^{\ensuremath{-}}+p\ensuremath{\rightarrow}{e}^{\ensuremath{-}}+{\ensuremath{\pi}}^{+}+n$ carried out at the Cambridge Electron Accelerator by observing the final electron and pion in coincidence. The apparatus consisted of two focusing magnetic spectrometers equipped with wire spark chambers for determining the trajectories of the particles and with \ifmmode \check{C}\else \v{C}\fi{}erenkov counters for particle identification. Data were collected in three scans which varied in turn one of the three variables: the photon mass squared ${k}^{2}$, the virtual photon-hadron center-of-mass energy $W$, or the angle $\ensuremath{\theta}$ between the virtual photon and the electroproduced pion in the virtual-photon-hadron center-of-mass system. The ${k}^{ 2}$-scan central settings were ${k}^{ 2}=\ensuremath{-}0.18,\ensuremath{-}0.30,\ensuremath{-}0.40,\ensuremath{-}0.80$, and -1.20 Ge${\mathrm{V}}^{2}$ for $W=2.15$ GeV and $\ensuremath{\theta}={0}^{\ensuremath{\circ}}$; the $W$-scan central settings were $W=1.85,2.05,2.15$, and 2.50 GeV for ${k}^{ 2}=\ensuremath{-}0.30$ Ge${\mathrm{V}}^{2}$ and $\ensuremath{\theta}={0}^{\ensuremath{\circ}}$; the central settings for the $\ensuremath{\theta}$ scan were $\ensuremath{\theta}={0}^{\ensuremath{\circ}},{7}^{\ensuremath{\circ}}$, and 15\ifmmode^\circ\else\textdegree\fi{} for $\ensuremath{\varphi}={0}^{\ensuremath{\circ}}$ and 180\ifmmode^\circ\else\textdegree\fi{} and for ${k}^{ 2}=\ensuremath{-}0.40$ Ge${\mathrm{V}}^{2}$ and $W=2.15$ GeV. The data are analyzed to determine the longitudinal-transverse interference term and are compared with the predictions of a dispersion-theory calculation by Berends. The dispersion-theory model is used to extract the pion electromagnetic form factor. The result is consistent with ${F}_{\ensuremath{\pi}}={F}_{1}^{V}$, but a simple $\ensuremath{\rho}$-pole form factor cannot be ruled out.
Published: 1973
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42. Photoproduction of Electron-Positron Pairs at 2.3 and 5.6 GeV

Author: J. Tenenbaum, G. J. Feldman, J. K. Randolph, W. Lockeretz, F. M. Pipkin, and A. M. Eisner
Subjects: Nuclear physics, Physics, Pair production, Photon, Positron, chemistry, chemistry.chemical_element, Electron, Atomic physics, Carbon
Published: 1970
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43. Bound on Virtual Compton Scattering at 185 and 460 MeV/c2

Author: W. Lockeretz, J. K. Randolph, A. M. Eisner, F. M. Pipkin, G. J. Feldman, and J. Tenenbaum
Subjects: Physics, Nuclear physics, Electron pair, Positron, Compton scattering, Electron, Compton wavelength, Atomic physics, Inelastic scattering
Published: 1970
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44. Search for monoenergetic photons from Υ(1S)→γ+X

Author: P. Skubic, I. J. Kim, M. D. Mestayer, D. L. Kreinick, E. H. Thorndike, D. Riley, F. Morrow, Xia Yi, F. M. Pipkin, T. Gentile, P. Lubrano, T. Copie, N. Horwitz, Joan A. Guida, H. Kagan, M. Hempstead, J. Kandaswamy, P. C. Stein, V. Tanikella, S. E. Csorna, Daniela Bortoletto, D. L. Hartill, D. Peterson, J. W. Dewire, A. M. Halling, R. DeSalvo, K. Kinoshita, Alice Bean, C. Rosenfeld, G. C. Moneti, A. Jawahery, R. Kowalewski, Robert Stone, James C. Green, A. J. Sadoff, R. Ehrlich, E. Nordberg, M. Ogg, L. Garren, G. B. Word, Chih-Ree Sun, P. Haas, N. B. Mistry, A. Chen, Richard Wilson, J. Hassard, A. Silverman, T. Jensen, M. Ito, B. K. Heltsley, D. Perticone, S. Holzner, S. Behrends, F. Sannes, R. T. Giles, Kenneth Francis Read, R. D. Kass, H. Van Hecke, D. Besson, R. S. Panvini, Ron Poling, C. Bebek, T. J. V. Bowcock, James Mueller, M. S. Alam, M. Goldberg, M. Pisharody, Karl Berkelman, R. Namjoshi, S. W. Gray, P. Avery, N. Katayama, Sheldon Stone, Paul Tipton, E. Blucher, C. G. Trahern, Murdock Gilchriese, B. Gittelman, Jan M. Guida, Thomas Ferguson, R. S. Galik, Y. Kubota, and D. G. Cassel
Subjects: Nuclear physics, Physics, Range (particle radiation), Photon, Meson, Branching fraction, Hadron, Elementary particle, Particle identification, Boson
Abstract: We present the results of a search for monoenergetic photons from the process UPSILON(1S) el+X. Upper limits at 90% confidence level for the branching ratio B(UPSILON(1S) el+X) range from 0.1% to 1.4% for photon energies between 150 and 2000 MeV.
Published: 1986
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45. Scalar-transverse separation of electroproducedK+ΛandK+Σ0final states

Author: F. M. Pipkin, K. M. Hanson, C. N. Brown, A. Browman, L. K. Sisterson, R. V. Kline, C. J. Bebek, A. Silverman, D. Larson, and S. W. Raither
Subjects: Physics, Baryon, Particle physics, Meson, Hadron, Scalar (mathematics), Hyperon, Elementary particle, Mathematical physics, Boson, Lepton
Abstract: We present evidence for a large scalar contribution to the cross section for the reaction $\mathrm{ep}\ensuremath{\rightarrow}e{K}^{+}\ensuremath{\Lambda}$. No evidence for a scalar contribution is found for the reaction $\mathrm{ep}\ensuremath{\rightarrow}e{K}^{+}{\ensuremath{\Sigma}}^{0}$. This is reminiscent of the results for the ${\ensuremath{\pi}}^{+}n$ and ${\ensuremath{\pi}}^{+}{\ensuremath{\Delta}}^{0}$ final states.
Published: 1977
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46. Search for axion production inϒdecay

Author: D. Weber, J. Hassard, A. Silverman, P. Lipari, P. Skubic, E. H. Thorndike, F. M. Pipkin, M. S. Alam, J. W. Dewire, C. Rosenfeld, D. L. Kreinick, T. Gentile, A. Chen, J. Chauveau, E. Nordberg, M. Jibaly, F. Sannes, S. Holzner, Richard Wilson, R. D. Kass, D. G. Cassel, J. Rohlf, S. L. Olsen, R. S. Galik, R. Plunkett, Y. Kubota, R. S. Panvini, A. Snyder, R. Wilcke, M. D. Mestayer, Murdock Gilchriese, B. Gittelman, C. J. Bebek, V. Kistiakowsky, M. Goldberg, Joseph Izen, G. Rucinski, P. C. Stein, Sheldon Stone, S. E. Csorna, R. G. Hicks, P. Avery, W. W. MacKay, K. Kinoshita, P. Ganci, N. B. Mistry, A. Fridman, Joan A. Guida, G. Trahern, J. Kandaswamy, Ron Poling, L. Garren, R. Ehrlich, M. Hempstead, H. Kagan, F. Morrow, M. Ito, A. Jawahery, N. Horwitz, D. Herrup, G. C. Moneti, H. Van Hecke, A. J. Sadoff, R. Perchonok, K. Chadwick, Karl Berkelman, T. Ferguson, M. Ogg, A. M. Halling, Robert Stone, G. Parkhurst, D. L. Hartill, James C. Green, D. Andrews, and A. C. Melissinos
Subjects: Nuclear physics, Massless particle, Physics, Particle physics, Meson, Branching fraction, CLEO, High Energy Physics::Experiment, Elementary particle, Cornell Electron Storage Ring, Axion, Particle identification
Abstract: We have searched for decays of the UPSILON(1S) into a single high-energy photon and a noninteracting long-lived particle, using the CLEO detector at the Cornell Electron Storage Ring. An upper limit of 3 x 10/sup -4/ (at 90% confidence level) is obtained for the branching ratio for such decays.
Published: 1983
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47. Coherent production ofρmesons in muon-carbon scattering at 150 and 100 GeV

Author: R. M. Fine, L. C. Myrianthopoulos, A. Skuja, G. I. Kirkbride, T. W. Quirk, S. H. Pordes, T. B. W. Kirk, H. S. Matis, R. G. Hicks, F. M. Pipkin, W. R. Francis, W. D. Shambroom, Richard Wilson, N. E. Booth, W. A. Loomis, W. S. C. Williams, L. W. Mo, V. K. Bharadwaj, B. A. Gordon, R. H. Heisterberg, L. J. Verhey, Herbert L. Anderson, and S. C. Wright
Subjects: Physics, Nuclear physics, Nuclear reaction, Particle physics, Muon, Meson, Scattering, Nuclear Theory, Hadron, Elementary particle, Nuclear Experiment, Helicity, Boson
Abstract: We have observed coherent production of $\ensuremath{\rho}$ mesons by muon scattering on carbon. The differential cross section falls steeply with increasing $t$ (the square of the four-momentum transferred to the nucleus) and helicity is conserved in the $s$ channel. Dominance by coherent production, as well as the radius of the carbon nucleus and the total $\ensuremath{\rho}$-nucleus cross section derived from our measurements, are consistent with what is observed in other related processes.
Published: 1981
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48. Erratum: Charm production in nonresonante+e−annihilations ats=10.55GeV

Author: T. Letson, N. Horwitz, M. Pisharody, Karl Berkelman, D. Perticone, R. Desalvo, S. Holzner, D. L. Kreinick, S. Behrends, C. Bebek, D. L. Hartill, I. P. J. Shipsey, S. E. Csorna, D. Z. Besson, Joan A. Guida, J. Kandaswamy, K. Kinoshita, R. S. Panvini, Hans J. Vogel, Jan M. Guida, R. W. Kraemer, Wei Li, D. Peterson, D. H. Miller, A. M. Halling, M. Hempstead, James Mueller, Paul Tipton, Philip Baringer, M. Goldberg, D. R. Johnson, G. C. Moneti, Xinchou Lou, Vivek Sharma, C. R. Sun, D. G. Cassel, M. D. Mestayer, R. D. Kass, V. Tanikella, R. L. McIlwain, R. Poling, R. Ehrlich, E. H. Thorndike, M. S. Alam, F. M. Pipkin, T. J. V. Bowcock, R. S. Galik, F. Morrow, D. Xiao, Thomas Ferguson, G. B. Word, A. Jawahery, P. Haas, G.J. Bobbink, R. Namjoshi, Murdock Gilchriese, E. Nordberg, M. Procario, B. Gittelman, S. W. Gray, E. I. Shibata, I. J. Kim, H. Kagan, B. K. Heltsley, Kenneth Francis Read, A. J. Sadoff, P. Thoma, T. Copie, J. Wolinski, P. Lubrano, T. Jensen, R. Holmes, Richard Wilson, Alice Bean, E. Blucher, A. Silverman, N. Katayama, L. Garren, R. Kowalewski, N. B. Mistry, Daniela Bortoletto, Sheldon Stone, Paul Avery, D. Riley, J. W. Dewire, I. C. Brock, and Yuichi Kubota
Subjects: Physics, Nuclear physics, Particle physics, Charm (quantum number)
Published: 1989
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49. Leptonic branching ratio of theϒ(2S)

Author: H. Van Hecke, Y. Kubota, E. H. Thorndike, F. M. Pipkin, Karl Berkelman, Paul Tipton, A. Snyder, M. D. Mestayer, C. Bebek, G. Parkhurst, T. Gentile, J. Chauveau, P. C. Stein, S. E. Csorna, M. Halling, C. G. Trahern, R. S. Galik, Jan M. Guida, K. Kinoshita, Sheldon Stone, D. L. Hartill, Ron Poling, R. S. Panvini, K. Chadwick, T. Jensen, D. G. Cassel, N. Horwitz, D. Besson, N. B. Mistry, Robert Stone, A. C. Melissinos, Murdock Gilchriese, B. Gittelman, Joan A. Guida, J. Kandaswamy, M. Hempstead, R. Wilcke, S. L. Olsen, H. Kagan, A. Chen, F. Sannes, P. Hass, P. Lipari, T. Ferguson, M. Ito, J. W. De Wire, W. W. MacKay, R. D. Kass, A. J. Sadoff, C. Rosenfeld, D. Peterson, M. E. Hejazifar, James C. Green, A. Jawahery, Kenneth Francis Read, J. Hassard, A. Silverman, Xu Kezun, D. L. Kreinick, R. T. Giles, F. Morrow, P. Skubic, M. Ogg, P. Avery, M. Goldberg, G. C. Moneti, E. Nordberg, S. Holzner, S. Behrends, Richard Wilson, L. Garren, R. Namjoshi, R. Ehrlich, Xia Yi, and M. S. Alam
Subjects: Physics, Particle decay, Particle physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, Elementary particle, Cornell Electron Storage Ring, Lepton
Abstract: Using the CLEO magnetic detector at the Cornell Electron Storage Ring, we find B(UPSILON(2S)..--> mu../sup +/..mu../sup -/) = 0.018 +- 0.008 (statistical) +- 0.005 (systematic) and B(UPSILON(2S)..-->..tau/sup +/tau/sup -/) = 0.017 +- 0.015 +- 0.006. .AE
Published: 1984
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50. Erratum: Investigation of the total charm-pair cross section in nonresonante+e−annihilations ats=10.5GeV

Author: L. Garren, D. Xiao, R. Kowalewski, M. D. Mestayer, R. L. McIlwain, Sheldon Stone, Paul Avery, N. B. Mistry, P. Haas, Hans J. Vogel, D. Riley, A. M. Halling, Daniela Bortoletto, M. Worris, V. Tanikella, D. Z. Besson, J. W. Dewire, P. Lubrano, M. S. Alam, D. R. Johnson, M. Pisharody, D. G. Cassel, Soumitra Nandi, Xinchou Lou, Karl Berkelman, D. Perticone, I. C. Brock, E. Nordberg, F. M. Pipkin, C. R. Sun, R. Poling, R. D. Kass, J. Kandaswamy, M. Goldberg, G. C. Moneti, Vivek Sharma, R. Holmes, Yuichi Kubota, T. J. V. Bowcock, Thomas Ferguson, N. Horwitz, Wei Li, D. Peterson, E. Blucher, J. Wolinski, I. P. J. Shipsey, D. H. Miller, B. Gittelman, A. Jawahery, A. Silverman, I. J. Kim, J. D. Lewis, R. S. Galik, Richard Wilson, T. Copie, R. Namjoshi, S. W. Gray, N. Katayama, D. L. Hartill, F. Morrow, M. Hempstead, H. Kagan, J. Byrd, A. J. Sadoff, S. E. Csorna, E. I. Shibata, K. Kinoshita, James Mueller, Philip Baringer, R. Ehrlich, M. Procario, T. Jensen, C. Ray Ng, D. M. Coffman, B. K. Heltsley, D. L. Kreinick, C. Bebek, and R. Desalvo
Subjects: Physics, Particle physics, Cross section (physics), Charm (quantum number)
Published: 1989
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