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Your search keyword '"J. R. P. Mahon"' showing total 2 results
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1. Polarization ofΣ+and Σ¯−hyperons produced by 800-GeV/cprotons

Author

P. Gouffon, M. Foucher, M. Luksys, V.A. Schegelsky, A. V. Dobrovolsky, Li Yunshan, Zhao Wenheng, Zheng Shuchen, I. I. Tkatch, Lang Pengfei, Yan Jie, Vincent J Smith, J. Lach, N. P. Kuropatkin, V. T. Grachev, J. R. P. Mahon, Tang Fukun, A. M. F. Endler, Dai Lisheng, H. Gottschalk, Shi Huanzhang, A. A. Vorobyov, N. K. Terentyev, A. V. Khanzadeev, M. A. Kubantsev, A. S. Denisov, V. M. Samsonov, E. McCliment, A. Morelos, S. Timm, R.A. Carrigan, Zhong Yuanyuan, D Chen, T. Dubbs, V. L. Golovtsov, I. F. Albuquerque, Li Chengze, L. N. Uvarov, M. C. Pommot Maia, N. F. Bondar, Carlos Escobar, P. S. Cooper, and C. R. Newsom

Subjects
Physics, Hyperon, General Physics and Astronomy, Sigma, High Energy Physics::Experiment, Elementary particle, Atomic physics, Nuclear Experiment, Polarization (waves), Sigma baryon
Abstract

We have measured the polarization of 375-GeV/c SIGMA+ and SIGMABAR- hyperons produced by 800-GeV/c protons incident on a Cu target. We find that the SIGMA+ polarization rises with increasing p(t) to a maximum of 16% at p(t) = 1.0 GeV/c and then decreases to 10% at p(t) = 1.8 GeV/c. We compare this SIGMA+ polarization with data at lower energies. The SIGMABAR- polarization has been measured for the first time. It has the same sign as the SIGMA+ but smaller magnitude in a similar kinematical region.

Published
1993
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2. A Search for Light Super Symmetric Baryons

Author

M. C. Pommot Maia, N. F. Bondar, I. F. Albuquerque, L. N. Uvarov, J. R. P. Mahon, P. S. Cooper, J. Lach, A. Morelos, WH Zhao, C. R. Newsom, J. Langland, An.A. Vorobyov, I. I. Tkatch, Vincent J Smith, Dai Lisheng, M. Foucher, A. M. F. Endler, T. Dubbs, H. Gottschalk, M. Luksys, V.A. Schegelsky, A. S. Denisov, V. L. Golovtsov, Carlos Escobar, Chloe Li, SC Zheng, N. K. Terentyev, A. V. Khanzadeev, J. Yan, A. V. Dobrovolsky, E. McCliment, R.A. Carrigan, F. Tang, Yanhong Li, PF Lang, M. A. Kubantsev, S. Timm, HZ Shi, N. P. Kuropatkin, V. T. Grachev, P. Gouffon, D. Chen, YY Zhong, and V. M. Samsonov

Subjects
Physics, Nuclear reaction, Particle physics, Proton, Hadron, Hyperon, FOS: Physical sciences, General Physics and Astronomy, Elementary particle, Charged particle, High Energy Physics - Experiment, Baryon, High Energy Physics - Experiment (hep-ex), Crystallography, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Production (computer science)
Abstract

We have searched for the production and decay of light super-symmetric baryons produced in 800 GeV/c proton copper interactions in a charged hyperon beam experiment. We observe no evidence for the decays R+(uud \g^~) -> S(uds \g^~) pi+ and X-(ssd \g^~) -> S(uds \g^~) pi- in the predicted parent mass and lifetime ranges of 1700-2500 Mev/c2 and 50-500 ps. Production upper limits for R+ at xF=0.47, Pt=1.4 GeV/c2 and X- at xF=0.48, Pt=0.65 GeV/c2 of less than 10^-3 of all charged secondary particles produced are obtained for all but the highest masses and shortest lifetimes predicted., 9 pages, uuencoded postscript 4 figures uuencoded, tar-compressed file (submitted to PRL)

Published
1996

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