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Featured researches published by J. R. P. Mahon.


Physical Review Letters | 1997

SEARCH FOR LIGHT SUPERSYMMETRIC BARYONS

R. Carrigan; P. S. Cooper; H. Gottschalk; J. Lach; A. Morelos; Dai Lisheng; Pf Lang; Cz Li; Ys Li; Hz Shi; F. Tang; Jie Yan; Wh Zhao; Sc Zheng; Yy Zhong; Nikolai F. Bondar; A. S. Denisov; A. V. Dobrovolsky; V. L. Golovtsov; V. T. Grachev; A. V. Khanzadeev; N. P. Kuropatkin; V.M. Samsonov; V. A. Schegelsky; N. K. Terentyev; I. I. Tkatch; L. N. Uvarov; Vorobyov Aa; M. A. Kubantsev; T. Dubbs

We have searched for the production and decay of light supersymmetric baryons produced in 800 GeV/c proton copper interactions in a charged hyperon beam experiment. We observe no evidence for the decays R{sup +}(uud{tilde g}){r_arrow} S{sup 0}(uds{tilde g}){pi}{sup +} and X{sup -}(ssd{tilde g}){r_arrow} S{sup 0}(uds{tilde g}){pi}{sup -} in the parent mass and lifetime ranges of 1700{endash}2500 MeV/c{sup 2} and 50{endash}500ps. Production upper limits for R{sup +} at x{sub F}=0.47, P{sub t}=1.4GeV/c{sup 2} and X{sup -} at x{sub F}=0.48, P{sub t}=0.65GeV/c{sup 2} of less than 10{sup -3} of all charged secondary particles produced are obtained for all but the highest masses and shortest lifetimes predicted. {copyright} {ital 1997} {ital The American Physical Society}


Physical Review Letters | 1992

First Observation of Magnetic Moment Precession of Channeled Particles in Bent Crystals

D. Chen; If Albuquerque; Vv Baublis; Nf Bondar; R. Carrigan; P. S. Cooper; Ls Dai; A. S. Denisov; A. V. Dobrovolsky; T. Dubbs; A. M. F. Endler; C. O. Escobar; M. Foucher; V. L. Golovtsov; Pa Goritchev; H. Gottschalk; P. Gouffon; V. T. Grachev; A. V. Khanzadeev; M. A. Kubantsev; N. P. Kuropatkin; J. Lach; Pf Lang; Vn Lebedenko; Cz Li; Ys Li; J. R. P. Mahon; E. McCliment; A. Morelos; Charles Ray Newsom


Physical Review Letters | 1992

Measurement of the asymmetry parameter in the hyperon radiative decay. Sigma. sup + r arrow p. gamma

M. Foucher; I. F. M. Albuquerque; Nikolai F. Bondar; R. Carrigan; D. Chen; Li Chengze; P. S. Cooper; A. S. Denisov; A. V. Dobrovolsky; T. Dubbs; A. M. F. Endler; C. O. Escobar; Tang Fukun; V. L. Golovtsov; P.A. Goritchev; H. Gottschalk; P. Gouffon; V. T. Grachev; Shi Huanzhang; Yan Jie; A. V. Khanzadeev; Kubantsev; N. P. Kuropatkin; J. Lach; M. Luksys; Lebedenko Vn; Dai Lisheng; J. R. P. Mahon; E. McCliment; A. Morelos


Physical Review Letters | 1993

MEASUREMENT OF THE MAGNETIC-MOMENTS OF THE SIGMA+ AND SIGMA-OVER-BAR-HYPERONS

A. Morelos; If Albuquerque; Nf Bondar; R. Carrigan; D. Chen; P. S. Cooper; Dai Lisheng; A. S. Denisov; A. V. Dobrovolsky; T. Dubbs; A. M. F. Endler; C. O. Escobar; M. Foucher; V. L. Golovtsov; H. Gottschalk; P. Gouffon; V. T. Grachev; A. V. Khanzadeev; M. A. Kubantsev; N. P. Kuropatkin; J. Lach; Pf Lang; Cz Li; Ys Li; M. Luksys; J. R. P. Mahon; E. McCliment; Charles Ray Newsom; Mcp Maia; V.M. Samsonov


Physical Review Letters | 1993

Polarization of Σ+ and Σ- hyperons produced by 800-GeV/c protons

A. Morelos; I. F. M. Albuquerque; Nikolai F. Bondar; R. Carrigan; D. Chen; P. S. Cooper; Dai Lisheng; A. S. Denisov; A. V. Dobrovolsky; T. Dubbs; A. M. F. Endler; C. O. Escobar; M. Foucher; V. L. Golovtsov; H. Gottschalk; P. Gouffon; V. T. Grachev; A. V. Khanzadeev; M. A. Kubantsev; N. P. Kuropatkin; J. Lach; Lang Pengfei; Li Chengze; Li Yanshan; M. Luksys; J. R. P. Mahon; E. McCliment; Charles Ray Newsom; M. C. P. Maia; V.M. Samsonov


Physical Review D | 2000

Measurement of the Sigma- lifetime and direct comparison with the Sigma+ lifetime

Rf Barbosa; Ivone F. M. Albuquerque; Nikolai F. Bondar; R. A. Jr. Carrigan; D. Chen; Peter S. Cooper; Dai Lisheng; A. S. Denisov; A. V. Dobrovolsky; T. Dubbs; A. M. F. Endler; C. O. Escobar; M. Foucher; V. L. Golovtsov; H. Gottschalk; P. Gouffon; V. T. Grachev; A. V. Khanzadeev; M. A. Kubantsev; N. P. Kuropatkin; J. Lach; J. Langland; Lang Pengfei; Li Chengze; Li Yunshan; M. Luksys; J. R. P. Mahon; E. McCliment; A. Morelos; Charles Ray Newsom


Archive | 2000

Measurement of the (Sigma)over-bar(-) lifetime and direct comparison with the Sigma(+) lifetime

Rf Barbosa; I. F. M. Albuquerque; Nikolai F. Bondar; R. Carrigan; D. Chen; P. S. Cooper; Ls Dai; A. S. Denisov; Ac Dobrovolsky; T. Dubbs; A. M. F. Endler; C. O. Escobar; M. Foucher; V. L. Golovtsov; H. Gottschalk; P. Gouffon; V. T. Grachev; A. V. Khanzadeev; M. A. Kubantsev; N. P. Kuropatkin; J. Lach; J. Langland; Pf Lang; Cz Li; Ys Li; M. Luksys; J. R. P. Mahon; E. McCliment; A. Morelos; Charles Ray Newsom


Physical Review D | 1999

Measurement of the Anti-Sigma- Lifetime and Direct comparison with the Sigma+ Lifetime

Rf Barbosa; M. Foucher; V. L. Golovtsov; C. O. Escobar; Zhong Yuanyuan; Nikolai F. Bondar; L. N. Uvarov; Tang Fukun; Vorobyov Aa; J. Lach; S. Timm; E. McCliment; V.M. Samsonov; Shi Huanzhang; Li Chengze; V. A. Schegelsky; A. Morelos; Dai Lisheng; J. Langland; Zhao Wenheng; I. F. M. Albuquerque; A. V. Khanzadeev; Charles Ray Newsom; M. Luksys; Vj Smith; H. Gottschalk; Kubantsev; Lang Pengfei; V. T. Grachev; Yan Jie


Physical Review D | 1995

{ital p}{sub {ital t}} and {ital x}{sub {ital F}} dependence of the polarization of Σ{sup +} hyperons produced by 800 GeV/{ital c} protons

A. Morelos; Ivone F. M. Albuquerque; Nikolai F. Bondar; R. A. Jr. Carrigan; D. Chen; Peter S. Cooper; Dai Lisheng; A. S. Denisov; A. V. Dobrovolsky; T. Dubbs; A. M. F. Endler; C. O. Escobar; M. Foucher; V. L. Golovtsov; H. Gottschalk; P. Gouffon; V. T. Grachev; A. V. Khanzadeev; M. A. Kubantsev; N. P. Kuropatkin; J. Lach; Lang Pengfei; Lebedenko Vn; Li Chengze; Li Yunshan; M. Luksys; J. R. P. Mahon; E. McCliment; Charles Ray Newsom; M. C. Pommot Maia


Physical Review D | 1995

Measurement of the branching ratio and asymmetry parameter for the Σ{sup +}â{ital p}γ radiative decay

S. Timm; Ivone F. M. Albuquerque; Nikolai F. Bondar; R. A. Jr. Carrigan; D. Chen; Peter S. Cooper; Dai Lisheng; A. S. Denisov; A. V. Dobrovolsky; T. Dubbs; A. M. F. Endler; C. O. Escobar; M. Foucher; V. L. Golovtsov; H. Gottschalk; P. Gouffon; V. T. Grachev; A. V. Khanzadeev; M. A. Kubantsev; N. P. Kuropatkin; J. Lach; Lang Pengfei; J. Langland; Li Chengze; Li Yunshan; M. Luksys; J. R. P. Mahon; E. McCliment; A. Morelos; Charles Ray Newsom

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A. Morelos

Petersburg Nuclear Physics Institute

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V. L. Golovtsov

Petersburg Nuclear Physics Institute

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M. Luksys

Federal University of Paraíba

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Nikolai F. Bondar

Petersburg Nuclear Physics Institute

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J. Lach

University of California

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