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Your search keyword '"J.G. Guy"' showing total 5 results
Start Over Author "J.G. Guy" Topic chemistry.chemical_element
5 results on '"J.G. Guy"'

1. Production of Ds∗- mesons in antineutrino-neon charged current interactions

Author

Stephane Willocq, Grégoire Wallenborn, W. Wittek, S.P. Krutchinin, P. V. Pitukhin, O. Erriquez, J. P. Baton, G. S. Gapienko, K. Varvell, A. D. Andryakov, W. Venus, G. T. Jones, D. R. O. Morrison, V. A. Korotkov, V. V. Ammosov, V.S. Burtovoy, I.V. Makhlueva, J.G. Guy, Vyacheslav Klyukhin, M. Neveu, T. Coghen, V. S. Kaftanov, Jean Sacton, V.G. Zaetz, V. A. Gapienko, A.E. Asratyan, Pierre Marage, Mikael Berggren, and M. A. Kubantsev

Subjects
Physics, Nuclear and High Energy Physics, Meson, Branching fraction, Hadron, chemistry.chemical_element, Quarkonium, Nuclear physics, Neon, Pion, Pair production, chemistry, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, Particle Physics - Experiment, Charged current
Abstract

Evidence of the production of the Ds∗-(2111) meson in v μ Ne collisions is presented. The Ds∗- production rates the Ds−→φπ− branching fraction is estimated to be (2.3±0.7) × 10−3 of all charged currents having a hadronic mass W above 3 GeV.

Published
1991

2. Observation of the relativistic rise in bubble density in a neon-hydrogen bubble chamber

Author

J.G. Guy, W.A. Venus, and C.M. Fisher

Subjects
Physics, Bubble density, Freon, Bubble, Nuclear Theory, chemistry.chemical_element, General Medicine, Electron, Nuclear physics, Momentum, Neon, Pion, chemistry, Bubble chamber, Atomic physics, Nuclear Experiment
Abstract

In a bubble chamber containing a neon-hydrogen mixture surrounding a hydrogen-filled track sensitive target, electrons with momenta above 100 MeV/ c are observed to have (1.25 ± 0.02) times more bubbles per unit length in neon-hydrogen than pions with momenta between 400 and 1500 MeV/ c . We interpret this difference as due to a relativistic rise in bubble density, such as has been observed previously in a freon bubble chamber. The total magnitude of the rise from minimum to plateau is estimated to be (28 ± 2)%. This should provide a method for distinguishing between relativistic pions, kaons and protons of the same momentum. It could in particular be exploited in high energy experiments using the track sensitive target technique in large bubble chambers such as BEBC.

Published
1976

3. Observation of coherent diffractive charged current interactions of antineutrinos on neon nuclei

Author

M. Calicchio, E. Zevgolatakos, M. Aderholz, N. Armenise, C. Vallée, E. Simopoulou, J. H. Bartley, V. Brisson, K. L. Wernhard, R. A. Sansum, Salvatore Nuzzo, D. R. O. Morrison, A. M. Cooper, T. Azemoon, F. Ruggieri, F. W. Bullock, Jon-Paul R. Wells, Keith W. J. Barnham, J.G. Guy, A. Vayaki, W. Wittek, T. Coghen, G. Gerbier, Steve O'Neale, C. Kochowski, K. Varvell, P. Kasper, W. Venus, O. Erriquez, J. Chwastowski, P. O. Hulth, D. Bertrand, Pierre Marage, Jean Sacton, M. A. Parker, P. Petiau, M. M. Mobayyen, S. Leighton-Davies, G. T. Jones, M. Talebzadeh, J. P. Baton, R. P. Middleton, P. J. Fitch, E. F. Clayton, and M. Neveu

Subjects
Physics, Nuclear and High Energy Physics, Nuclear Theory, Hadron, chemistry.chemical_element, High momentum, Nuclear physics, Neon, Fragmentation (mass spectrometry), chemistry, Physique des particules élémentaires, Atomic physics, Nuclear Experiment, Charged current
Abstract

First observation is reported of semi-inclusive coherent diffractive charged current interactions of antineutrinos on neon nuclei. A sharp peaking towards zero is observed in the, 0, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1984

4. An investigation of the EMC effect using antineutrino interactions in deuterium and neon

Author

S. Natali, G. T. Jones, J. Sacton, P. Capiluppi, A. Romero, A. Vayaki, A. M. Cooper, C. Kochowski, M. L. Faccini-Turluer, K. Varvell, P. J. Fitch, P. Petiau, V. Flaminio, M.T. Fogli-Muciaccia, F. Romano, T. Azemoon, A. Marzari-Chiesa, A. M. Rossi, C. Vallée, J. H. Bartley, F. Bobisut, R. Pazzi, P. O. Hulth, K. L. Wernhard, V. Brisson, G. W. Van Apeldoorn, E. F. Clayton, R. A. Sansum, K. W. J. Barnham, J.G. Guy, Norbert Schmitz, M. A. Parker, M. Calicchio, F. Ruggieri, A. Tenner, R. P. Middleton, R. Wigmans, A. Petridis, P. Marage, H. Wachsmuth, F. W. Bullock, M. Neveu, E. Simopoulou, M. Aderholz, H. Klein, D. Bertrand, P. Kasper, L. Deck, G. Gerbier, S. W. O. Neale, J. Derkaoui, O. Villalobos-Baillie, D. Vignaud, D. Allasia, Jon-Paul R. Wells, H. Huzita, W. Venus, and A. Baldini

Subjects
Physics, Nuclear and High Energy Physics, Muon, Scattering, EMC effect, chemistry.chemical_element, Spectral line, Nuclear physics, Neon, chemistry, Deuterium, Physique des particules élémentaires, Atomic physics, Nucleon, Charged current, Particle Physics - Phenomenology
Abstract

Antineutrino interactions in BEBC are compared to look for differences between the differential cross sections per nucleon in neon and in deuterium. The identical geometries, beam spectra and muon identification criteria and acceptances allow comparison with very small systematic errors. The results are compared in detail with μ and e scattering data from EMC and SLAC. We find no rise in the ratio dσ/dx (ν Ne)/σ/dx (ν D2) at low x, independent of Q2 up to Q2 ∼ 14 GeV2. © 1984., 0, 58 auteurs, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
1984

5. Positron production by muon neutrinos BEBC filled with a neon-hydrogen mixture

Author

H.H. Bingham, Jh Wickens, V. Brisson, T. Myndel, G. Gerbier, J. H. Bartley, S. W. O'Neale, P. Petiau, Salvatore Nuzzo, C. Vander Velde-Wilquet, O. Erriquez, C. Kochowski, D.C. Colley, T. W. Jones, D.J. Crennell, F. Romano, N.J. Bakker, G. Bertrand-Coremans, F. W. Bullock, A. Pullia, W. Venus, G.E. Kalmus, J. P. Baton, W. Cameron, G. T. Jones, M. Neveu, D.H. Davis, J.G. Guy, J. Alitti, S. J. Sewell, Jean Sacton, H. Mulkens, L. Lowe, A.G. Michette, and S. Natali

Subjects
Physics, Nuclear and High Energy Physics, Neon, Muon, Positron, chemistry, Hydrogen, Neutral current, Analytical chemistry, chemistry.chemical_element, Neutrino, Atomic physics
Abstract

For e + energy > 0.3 GeV and 10 GeV ƒ = (v μ + Ne → μ − e + )/(v μ + Ne → μ − ) = (0.41 ± 0.15)% ; (ii) 1.2 ± 0.5 neutral strange particles are produced per μ − e + event; (iii) the lifetime of possible positron-parent particles is −10 s (90% C.L.); (iv) the cross section for direct e + production via the neutral current is + , decaying into e + … is −3 times that for μ − production, implying M (L + ) > 10 GeV.

Published
1978

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