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Your search keyword '"George P Yost"' showing total 14 results
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14 results on '"George P Yost"'

1. Study of χc2 production in photon-photon collisions

Author

A. R. Clark, D. E. Pellet, William A. Wenzel, D. J. Lambert, S. C. Loken, G. Masek, B. C. Shen, J. Lys, J. J. Eastman, Ronald R. Ross, K. T. Knöpfle, S. J. Yellin, G. S. Greenbaum, R. L. Holtzapple, M. K. Sullivan, C. Zeitlin, H. H. Bingham, W. Vernon, D. O. Caldwell, D. A. Bauer, J. M. Hauptman, S. Khacheryan, J. G. Layter, E. M. Wang, S. B. Chun, K. H. Fairfield, G. Lynch, M. G. Strauss, C. D. Buchanan, Werner Hofmann, M. T. Ronan, A. P.T. Palounek, H. Yamamoto, N. A. Nicol, M. L. Stevenson, R. C. Berg, W. T. Lin, A. M. Eisner, A. Lu, Y. T. Oyang, Orin I. Dahl, H. Marsiske, George P Yost, D. R. Nygren, R. R. Kofler, G. Zapalac, M. Daoudi, G. Godfrey, R. Belcinski, H. P. Paar, Y. X. Wang, Gilbert Shapiro, R. W. Stephens, E. S. Miller, and R. J. Madaras

Subjects
Quantum chromodynamics, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Photon, Meson, law, Elementary particle, State (functional analysis), Collider, law.invention, Lepton
Abstract

Two-photon production of the charmonium state χ c has been studied by the TPC/Two-Gamma experiment at the SLAC e + e − collider PEP. We observe evidence of the χ c 2 state in the channel γγ → χ c 2 , χ c 2 → γJ / ψ , J / ψ → l + l − and obtain a value of Γ γγ ( χ c 2 )=3.4±1.7±0.9 keV. This is the first observation of the two-photon production of a χ c state. Comparison is made with previous experimental results and QCD predictions for Γ γγ ( χ c 2 ).

Published
1993
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2. Erratum

Author

Thomas G Trippe, G. Conforto, Mahiko Suzuki, Alan Rittenberg, K Gieselmann, L. Montanet, F. C. Porter, Kaoru Hagiwara, R. Shrock, R. J. Morrison, R. M. Barnett, Keith A. Olive, R. H. Schindler, G. Höhler, G. R. Lynch, J. J. Hernandez, R A Eichler, K. R. Schubert, Nils A. Tornqvist, J J Eastman, George P Yost, Ken Ichi Hikasa, S. Kawabata, C. Caso, Matts Roos, H G Hayes, James R. Stone, D. E. Groom, Charles G Wohl, M. Aguilar-Benitez, B. Armstrong, and G.S. Wagman

Subjects
Physics, Baryon, Nuclear and High Energy Physics, Particle physics, Particle properties, Meson, Bibliography, Table (database), Data compilation, Statistical physics, Lepton
Published
1991
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3. Pion and nucleon dissociation in π−p→π−π+π−p at 205 GeV/c

Author

H. H. Bingham, C. Pascaud, S. M. Pruss, G. S. Abrams, R. Hanft, B.Y. Daugeras, J. A. Kadyk, George P Yost, F. C. Winkelmann, G. H. Trilling, A. D. Johnson, D.M. Chew, D. Bogert, W. Smart, C. E. Friedberg, F. R. Huson, Gerson Goldhaber, L. Stutte, W.B. Fretter, W.R. Graves, and D. Ljung

Subjects
Physics, Nuclear and High Energy Physics, Pion, Factorization, Hydrogen bubble, Fermilab, Atomic physics, Nucleon, Dissociation (chemistry)
Abstract

In a 48 000-picture exposure of the Fermilab 30-inch hydrogen bubble chamber to a 205 GeV/ c π − beam, we have measured 169 events of the reaction, π − p → π − π + π − p, with a cross section of 635 ± 61 μ b. This reaction proceeds almost entirely via low mass π − → 3 π and p → p ππ dissociation. Factorization is satisfied for p → pππ dissociation in πp and pp interactions.

Published
1974
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4. Introduction

Author

R L Crawford, Charles G Wohl, M. Aguilar-Benitez, Alan Rittenberg, G.S. Wagman, G. R. Lynch, K. R. Schubert, B. Armstrong, G. Höhler, F. C. Porter, R Frosch, R. H. Schindler, G. Gopal, R A Eichler, L D Roper, Matts Roos, Ian Hinchliffe, D. M. Manley, Tokuzo Shimada, Robert Shrock, J. J. Hernandez, L. Montanet, Joel R Primack, Thomas G Trippe, Nils A. Tornqvist, W P Trower, George P Yost, Kenneth G. Hayes, and R. M. Barnett

Subjects
Baryon, Physics, Nuclear and High Energy Physics, Particle physics, Particle properties, Meson, Data compilation, Table (information), Lepton
Published
1986
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5. Diffractive dissociation and N∗ production in π−n → π−π−p at 15 GeV/c

Author

George P Yost, W.R. Graves, Henry Lubatti, H. H. Bingham, W.B. Fretter, K. Moriyasu, Frank C. Porter, and R. Harris

Subjects
Physics, Nuclear and High Energy Physics, Pomeron, biological sciences, Neutron, Atomic physics, Dissociation (chemistry)
Abstract

Diffractive dissociation of neutrons and N ∗ production are studied in the reaction π − n → π − π − p at 15 GeV/ c . The reaction is dominated by a broad, low-mass diffractive enhancement in the pπ − mass. Evidence is presented for the production of at least one N ∗ resonance in the mass region 1.4–1.8 GeV. Comparison with ISR data suggest that this N ∗ resonance is produced by pomeron exchange. The N ∗ production occurs predominantly at t ′ > 0.1 GeV 2 which suggests a different coupling from the usual diffractive reactions. The non-resonant diffractive background is compared with a double-Regge model and the statistical dissociation model.

Published
1977
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6. A neutrino (antineutrino)-induced four lepton event

Author

H. C. Ballagh, A. Greene, D. Minette, D. Gee, M. W. Peters, Sherwood Parker, N. Wyatt, D. Holmgren, George P Yost, M. D. Jones, M. E. Duffy, R. J. Cence, W. M. Smart, Bruce L. Chrisman, G. Harigel, D.D. Reeder, H. Rudnicka, J. P. Marriner, Henry Lubatti, T. Murphy, M.D. Sokoloff, G. Lynch, B. S. Yuldashev, Vincent Z. Peterson, E. E. Schmidt, Ugo Camerini, T. Lawry, T. H. Burnett, M. L. Stevenson, M. Ngai, W. F. Fry, J. Orthel, G.M. Swider, K. Moriyasu, J. Lys, H. H. Bingham, R. Benada, F. A. Harris, E. Wolin, R. Loveless, P. McCabe, F. R. Huson, W.B. Fretter, and J. Wolfson

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Physics::Instrumentation and Detectors, chemistry.chemical_element, Electron, Nuclear physics, Neon, chemistry, Bubble chamber, High Energy Physics::Experiment, Neutrino, Event (particle physics), Lepton
Abstract

We report observation of a neutrino (antineutrino)-induced event with two electrons, one positron, one positively charged muon, a neutral K meson, and seven gammas in an experiment performed in the FNAL 15-ft. bubble chamber with a 47% atomic mixture of neon in hydrogen. Estimated experimental electron backgrounds are ∼10 −4 per track. At present we have no plausible interpretation of this event.

Published
1978
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7. Inclusive ϱ° production in π−p interactions at 205 GeV/c

Author

D. Bogert, D.M. Chew, B.Y. Daugeras, W. Smart, F. R. Huson, C. Pascaud, Gerson Goldhaber, J. A. Kadyk, D. Ljung, S. Kahn, A. D. Johnson, W.B. Fretter, F. C. Winkelmann, G. H. Trilling, W.R. Graves, H. H. Bingham, S. M. Pruss, L. Stute, R. Hanft, and George P Yost

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Cross section (physics), Pion, Production (computer science), Central region
Abstract

The inclusive ϱ ° production cross section has been measured in the reaction π − p → π + π − X at 205 GeV/ c . We find σ ( ϱ ° ) = 13.5 ± 3.4 mb, with most of the production occuring in the central region. Assuming σ ( ϱ + ) ≈ σ ( ϱ − ) ≈ σ ( ϱ ° ), it is concluded that approximately one-third of the pions at this energy come from ϱ -decay.

Published
1975
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8. Production of a low-mass dπ+π− enhancement

Author

R. Harris, H. H. Bingham, W. J. Podolsky, L.A. Dunn, L. Stutte, Henry Lubatti, K. Moriyasu, Frank C. Porter, George P Yost, W.R. Graves, and W.B. Fretter

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Simple (abstract algebra), Production (computer science), Low Mass
Abstract

A broad threshold dπ+π− enhancement has been observed in π−d → dπ+π−π− at 15 GeV/c. It can be described by a model which assumes terms involving intermediate N12∗ production, plus a Deck type enhancement. A simple calculation based on π±p data is successful in reproducing the main features of the data.

Published
1975
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9. Tables of particle properties

Author

Thomas G Trippe, L D Roper, Charles G Wohl, C Walck, B. Armstrong, M. Aguilar-Benitez, George P Yost, Robert L Kelly, R L Crawford, Matts Roos, G. Gopal, L. Montanet, M. J. Losty, F. C. Porter, R Frosch, Alan Rittenberg, R. E. Hendrick, Tokuzo Shimada, and Robert Shrock

Subjects
Physics, Nuclear and High Energy Physics, Particle properties, Computer graphics (images), Bibliography, Table (database), Data compilation
Published
1982
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10. New particle searches and discoveries

Author

M.J. Losty, R.J. Hemingway, Naomi Barash-Schmidt, Vladimir Chaloupka, Robert L. Kelly, Arthur Hinton Rosenfeld, Angela Barbaro-Galtieri, Thomas G. Trippe, Matts Roos, Alan Rittenberg, Charles P. Horne, George P. Yost, C. Bricman, and B. Armstrong

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle properties, Bearing (mechanical), law, High Energy Physics::Phenomenology, Particle, High Energy Physics::Experiment, Particle Data Group, Lepton, law.invention
Abstract

This supplement to the 1976 edition of “Review of particle properties”, Particle Data Group [Rev. Mod. Phys. 48, No. 2, Part II (1976)], contains tabulations of experimental data bearing on the “new particles” and related topics; categories covered include charmed particles, ψ's and their decay products, and heavy leptons. Errata to the previous edition are also given.

Published
1977
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11. Study of diffractively produced five-pion final states

Author

Frank C. Porter, H. H. Bingham, W.B. Fretter, George P Yost, R. Harris, W.R. Graves, K. Moriyasu, W. J. Podolsky, and Henry Lubatti

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Pion, Deuterium, Mass spectrum, High Energy Physics::Experiment, Statistical model, Nuclear Experiment, Bootstrap model, Dissociation (chemistry)
Abstract

Diffractively produced five-pion final states are studied in the reaction π−d → 3π−2π+d at 15 GeV/c and compared with predictions of the statistical dissociation model and multiperipheral models.

Published
1975
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12. Charge asymmetry in inelastic π−p interactions at 205 GeV/c for particles with transverse momentum > 1.0

Author

D.M. Chew, F. C. Winkelmann, G. H. Trilling, George P Yost, D. Bogert, F. R. Huson, L. Stutte, S. M. Pruss, S. Kahn, R. Hanft, W. Smart, A. D. Johnson, H. H. Bingham, J. A. Kadyk, B.Y. Daugeras, W.R. Graves, W.B. Fretter, and D. Ljung

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, Transverse momentum, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment, Asymmetry, media_common
Abstract

In 205 GeV / c π − p inelastic interactions, negative particles with transverse momentum greater than 1.0 GeV / c moving forward in the center of mass outnumber similar positive particles by a factor of 3.7 to 1, greatly in excess of the corresponding ratio for small transverse momentum. The asymmetry is reversed in the backward direction. The forward asymmetry is most prominent in 2-, 4-, and 6-prong interactions, but both forward and backward asymmetries are also substantial for higher multiplicity interactions.

Published
1975
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13. Observation of short-lived particles produced in high energy neutrino interactions

Author

D.D. Reeder, R. Benada, G.M. Swider, T. Lawry, T. H. Burnett, R. J. Cence, H. Rudnicka, V. Z. Peterson, W. M. Smart, Henry Lubatti, M. L. Stevenson, M. E. Duffy, George P Yost, G. Harigel, E. E. Schmidt, E. Wolin, G. Lynch, J. Lys, M. W. Peters, M. D. Jones, Ugo Camerini, J. Orthel, H. H. Bingham, W.B. Fretter, R. Loveless, M. Ngai, V. J. Stenger, M.D. Sokoloff, P. McCabe, W. F. Fry, E. Treadwell, F. R. Huson, H. C. Ballagh, K. Moriyasu, D. Gee, L. Fluri, F. A. Harris, D. Holmgren, Bruce L. Chrisman, J. Wolfson, Sherwood Parker, and D. Rees

Subjects
Nuclear physics, Semileptonic decay, Physics, Nuclear and High Energy Physics, Particle physics, Particle decay, Pair production, Meson, D meson, Bubble chamber, High Energy Physics::Experiment, Neutrino, Lepton
Abstract

Examination of a sample of 89 high-energy, neutrino-induced dilepton events produced in the Fermilab 15 ft bubble chamber has resulted in the direct observation of the production and visible semi-leptonic decay of short-lived particles. One charged decay, two neutral decays, and one decay candidate of undetermined charge are found. Assuming these events and the remaining dilepton signal result from D meson decays, we obtain τ D + = 2.5 −1.5 +3.5 × 10 −13 s and τ D 0 = 3.5 −1.7 +3.5 × 10 −13 s, using a maximum likelihood analysis.

Published
1980
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14. Review of particle properties

Author

R. H. Schindler, Kenneth G. Hayes, Charles G Wohl, R. M. Barnett, M. Aguilar-Benitez, G.S. Wagman, Thomas G Trippe, G. Höhler, George P Yost, Alan Rittenberg, L D Roper, J. J. Hernandez, Kaoru Hagiwara, D. M. Manley, K. R. Schubert, Ronald R. Ross, Mahiko Suzuki, R. Shrock, S. Kawabata, G. Conforto, B. Armstrong, B Cabrera, F. C. Porter, R L Crawford, Keith A. Olive, Nils A. Tornqvist, R A Eichler, W P Trower, Matts Roos, L. Montanet, G. R. Lynch, and Ian Hinchliffe

Subjects
Physics, Baryon, Nuclear and High Energy Physics, Particle physics, Particle properties, Meson, Bibliography, Table (database), Data compilation, Lepton
Published
1988
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