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Your search keyword '"Sugonyaev, V. P."' showing total 10 results
Start Over Author "Sugonyaev, V. P." Journal physics of atomic nuclei
10 results on '"Sugonyaev, V. P."'

7. Measurement of the matrix element for the decay η′ → ηπ0 π0 with the GAMS-4 π spectrometer.

Author

Blik, A. M., Gorin, A. M., Donskov, S. V., Kolosov, V. N., Lednev, A. A., Lishin, V. A., Mikhailov, Yu. V., Polyakov, V. A., Samoylenko, V. D., Sobol, A. E., Sugonyaev, V. P., and Khaustov, G. V.

Subjects
SPECTROMETERS, SPECTRUM analysis instruments, CHEMICAL reactions, ELECTRONS, EXCHANGE reactions
Abstract

The parameters of the Dalitz diagram for the decay η′ → ηπ0 π0 in a generalized and a linear representation were determined by using a statistical sample of 15 × 103 events. A charge-exchange reaction at a momentum of 32 GeV/ c was a source of monoenergetic η′ mesons. The experiment was performed with the aid of the GAMS-4 π spectrometer. [ABSTRACT FROM AUTHOR]

Published
2009
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8. Investigation of the decay η′ → 3 π 0 with the GAMS-4 π spectrometer.

Author

Blik, A. M., Gorin, A. M., Donskov, S. V., Kolosov, V. N., Lednev, A. A., Lishin, V. A., Mikhailov, Yu. V., Polyakov, V. A., Samoylenko, V. D., Sobol, A. E., Sugonyaev, V. P., and Khaustov, G. V.

Subjects
MESONS, EXCHANGE reactions, SPECTRUM analysis instruments, SPECTROMETERS, PARTICLES (Nuclear physics), NUCLEAR physics
Abstract

An experiment performed with the GAMS-4 π spectrometer resulted in observing 235 ± 45 events of the decay η′ → 3 π 0. The respective charge-exchange reaction at a momentum of 32.5 GeV/ c was used as a source of η′ mesons. The decay branching ratio was found to be Br( η′ → 3 π 0) = (1.8 ± 0.4) × 10−3. The slope parameter of the square of the respective matrix element in the linear approximation proved to be β = −0.59 ± 0.18. [ABSTRACT FROM AUTHOR]

Published
2008
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9. Observation of the f 2(1525) resonance in the ηη system produced in K − p interactions at a momentum of 32.5 GeV/ c.

Author

Binon, F., Blick, A. M., Donskov, S. V., Inaba, S., Kolosov, V. N., Kut'in, V. M., Ladygin, M. E., Lednev, A. A., Lishin, V. A., Mikhailov, Yu. V., Peigneux, J. P., Polyakov, V. A., Samoylenko, V. D., Sobol, A. E., Stroot, J. P., Sugonyaev, V. P., Takamatsu, K., Tsuru, T., Fujii, Y., and Khaustov, G. V.

Subjects
PARTICLES (Nuclear physics), SPECTRUM analysis, RESONANCE, ACCELERATOR mass spectrometry, NUCLEAR reactions
Abstract

The reaction K − p → ηη(Λ/Σ0) at a momentum of 32.5 GeV/ c was studied for the first time. The experiment was performed by using the GAMS-4π spectrometer at the 70-GeV accelerator of the Institute for High Energy Physics (IHEP, Protvino). The f 2(1525) resonance was observed in the effective-mass spectrum of the ηη system at a low background level. The cross section for f 2(1525) production was measured. The branching ratio for f 2(1525)-meson decay to ηη and K $$\bar K$$ was found to be R = 0.119 ± 0.015(stat.) ± 0.036(syst.), which is in agreement with the world-average value. [ABSTRACT FROM AUTHOR]

Published
2007
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10. Investigation of the ηη System in π–p Interactions at a Momentum of 32.5 GeV/c at the GAMS-4π Spectrometer.

Author

Binon, F., Blik, A. M., Donskov, S. V., Inaba, S., Kolosov, V. N., Lednev, A. A., Lishin, V. A., Mikhailov, Yu. V., Peigneux, J. P., Polyakov, V. A., Sadovsky, S. A., Samoilenko, V. D., Sobol, A. E., Stroot, J. P., Sugonyaev, V. P., Takamatsu, K., Tsuru, T., Fujii, I., Khaustov, G. V., and Shimizu, H.

Subjects
MOMENTUM (Mechanics), SPECTROMETERS, SPECTRUM analysis instruments, MESONS
Abstract

The ηη system produced in charge-exchange π–p interaction at a momentum of 32.5 GeV/c is studied in an experiment performed with the GAMS-4π spectrometer at the 70-GeV accelerator of the Institute for High-Energy Physics (IHEP, Protvino). A partial-wave analysis is performed in the mass range between 1.1 and 3.9 GeV for –t < 0.2 (GeV/c)2, S, D, G, and J waves being taken into account in this analysis. The S wave has a complicated structure, displaying peaks at about 1.5 and 1.7 GeV. These peaks are associated with the f0(1500) and f0(1710) mesons. One of the solutions (preferable one) involves the f0(2200) and f2(1950) resonances. The mass region above 2.4 GeV is dominated by the G wave. A broad state of mass about 3 GeV and width 0.7 GeV is found in the J wave. The parameters of the resonances in question and their production cross sections are measured.© 2005 Pleiades Publishing, Inc. [ABSTRACT FROM AUTHOR]

Published
2005
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