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5 results on '"Amelin D"'

1. Measurement of Form Factors for the Decay η′ → ηπ–π+.

Author

Amelin, D. V., Gavrilov, Yu. G., Gouz, Yu. P., Dorofeev, V. A., Dzhelyadin, R. I., Zaitsev, A. M., Zenin, A. V., Ivashin, A. V., Kachaev, I. A., Kabachenko, V. V., Karyukhin, A. N., Konoplyannikov, A. N., Konstantinov, V. F., Kostyukhin, V. V., Matveev, V. D., Nikolaenko, V. I., Ostankov, A. P., Polyakov, B. F., Ryabchikov, D. I., and Solodkov, A. A.

Subjects
*RADIOACTIVE decay, *NUCLEAR reactions, *PARAMETER estimation, *PARTICLE beams, *PARTICLES (Nuclear physics), *NUCLEAR physics
Abstract

Form factors measured for the decay η′ → ηπ–π+ in π–A → η′π–A* reactions at a beam momentum of pπ = 28 GeV are presented. The distribution in Dalitz variables for 7000 decay events is described well within a linear and a nonlinear parametrization of the relavant matrix element. The slope parameter in the variable y differs from zero significantly. It is Reα = –0.072 ± 0.012(stat.) ± 0.006(syst.) in the linear and a = –0.120 ± 0.027(stat.) ± 0.015(syst.) in the nonlinear parametrization. In this decay, the C-violation parameter is compatible with zero, c = 0.021 ± 0.024.© 2005 Pleiades Publishing, Inc. [ABSTRACT FROM AUTHOR]

Published
2005
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2. Investigation of Hybrid States in the VES Experiment at the Institute for High Energy Physics (Protvino).

Author

Amelin, D. V., Gavrilov, Yu. G., Gouz, Yu. P., Dorofeev, V. A., Dzhelyadin, R. I., Zaitsev, A. M., Zenin, A. V., Ivashin, A. V., Kachaev, I. A., Kabachenko, V. V., Karyukhin, A. N., Konoplyannikov, A. N., Konstantinov, V. F., Kostyukhin, V. V., Matveev, V. D., Nikolaenko, V. I., Ostankov, A. P., Polyakov, B. F., Ryabchikov, D. I., and Solodkov, A. A.

Subjects
*MESONS, *PARTICLE physics, *QUANTUM theory, *NUCLEAR physics, *HEAVY particles (Nuclear physics), *RESEARCH institutes
Abstract

Experimental investigations of candidates for hybrid mesons in the VES experiment at the Institute for High Energy Physics (Protvino) are surveyed. The data in question concern π1(1400) characterized by the exotic quantum numbers of JPC = 1–+ and observed in the ηπ– final state; JPC = 1–+π1(1600) in the η′π–, b1(1235)π, and f1(1285)π– final states; and JPC = 0–+π(1800) in the f0(980)π–, f0(1300)π–, f0(1500)π–, and a0–(980)η final states. New results are given along with data published previously.© 2005 Pleiades Publishing, Inc. [ABSTRACT FROM AUTHOR]

Published
2005
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3. Measurement of Form Factors for the Decay η′ → ηπ–π+.

Author

Amelin, D. V., Gavrilov, Yu. G., Gouz, Yu. P., Dorofeev, V. A., Dzhelyadin, R. I., Zaitsev, A. M., Zenin, A. V., Ivashin, A. V., Kachaev, I. A., Kabachenko, V. V., Karyukhin, A. N., Konoplyannikov, A. N., Konstantinov, V. F., Kostyukhin, V. V., Matveev, V. D., Nikolaenko, V. I., Ostankov, A. P., Polyakov, B. F., Ryabchikov, D. I., and Solodkov, A. A.

Subjects
RADIOACTIVE decay, NUCLEAR reactions, PARAMETER estimation, PARTICLE beams, PARTICLES (Nuclear physics), NUCLEAR physics
Abstract

Form factors measured for the decay η′ → ηπ–π+ in π–A → η′π–A* reactions at a beam momentum of pπ = 28 GeV are presented. The distribution in Dalitz variables for 7000 decay events is described well within a linear and a nonlinear parametrization of the relavant matrix element. The slope parameter in the variable y differs from zero significantly. It is Reα = –0.072 ± 0.012(stat.) ± 0.006(syst.) in the linear and a = –0.120 ± 0.027(stat.) ± 0.015(syst.) in the nonlinear parametrization. In this decay, the C-violation parameter is compatible with zero, c = 0.021 ± 0.024.© 2005 Pleiades Publishing, Inc. [ABSTRACT FROM AUTHOR]

Published
2005
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4. Antiproton annihilation on nuclei

Author

R. Duperray, K. Protasov, bibliotheque, LPSC, Amelin D. Zaitsev A.M., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics, Nuclear reaction, Antiparticle, Particle physics, Annihilation, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], Nuclear Theory, 020206 networking & telecommunications, 02 engineering and technology, Fermion, Nuclear physics, Baryon, Antiproton, Antimatter, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, [PHYS.HTHE] Physics [physics]/High Energy Physics - Theory [hep-th], Physics::Atomic Physics, Nuclear Experiment, Nucleon
Abstract

Recent experimental data on the antiproton in‐flight annihilation on light nuclei are analysed. The reasons of the observed equality of the p‐hydrogen, p‐deuterium, and p‐helium annihilation cross sections at low energies are discussed. The calculations within a simple optical model confirm that the S‐wave contribution to the antiproton‐nucleus annihilation cross section is approximately the same for all nuclei.

Published
2002

5. Radiative transitions in mesons within a non relativistic quark model

Author

R. Bonnaz, C. Gignoux, B. Silvestre‐Brac, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS), and Amelin D.

Subjects
Physics, Particle physics, Meson, [PHYS.HTHE]Physics [physics]/High Energy Physics - Theory [hep-th], High Energy Physics::Lattice, High Energy Physics::Phenomenology, Nuclear Theory, Down quark, 020206 networking & telecommunications, 02 engineering and technology, Top quark condensate, Bottom quark, Nuclear physics, Pion, Quark star, Up quark, 12.39.Jh, 13.40.Hq, 13.25.Jx, 0202 electrical engineering, electronic engineering, information engineering, High Energy Physics::Experiment, 020201 artificial intelligence & image processing, B meson, meson hadronic decay, electromagnetic decays, quark models
Abstract

[New Search] [General Search Help] [ Back To Hit List | Next Document | Issue Table of Contents | Bottom of Page] AIP Conference Proceedings -- June 7, 2002 -- Volume 619, Issue 1, pp. 839-844 Full Text: [ PDF (1439 kB) GZipped PS ] Order Rightslink Permissions for Reuse About Rightslink view MyArticles What is this? Radiative transitions in mesons within a non relativistic quark model R. Bonnaz, B. Silvestre-Brac, and C. Gignoux Institut des Sciences Nucléaires, 53 Avenue des martyrs, F38026 Grenoble-Cedex, France An exhaustive study of radiative transitions in mesons is performed in a non relativistic quark model. Three different types of mesons wave functions are tested. The effect of some usual approximations is commented. Overall agreement with experimental data is obtained.

Published
2001
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