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Your search keyword '"Filin, A.P."' showing total 2 results
Start Over Author "Filin, A.P." Topic nuclear reactions
2 results on '"Filin, A.P."'

1. Search for light pseudoscalar sgoldstino in decays

Author

Tchikilev, O.G., Akimenko, S.A., Britvich, G.I., Datsko, K.V., Filin, A.P., Inyakin, A.V., Khmelnikov, V.A., Konstantinov, A.S., Konstantinov, V.F., Korolkov, I.Y., Leontiev, V.M., Novikov, V.P., Obraztsov, V.F., Polyakov, V.A., Romanovsky, V.I., Shelikhov, V.I., Smirnov, N.E., Uvarov, V.A., Yushchenko, O.P., and Bolotov, V.N.

Subjects
*SYNCHROTRONS, *PARTICLE accelerators, *NUCLEAR reactions, *MASS (Physics)
Abstract

Abstract: A search for the light pseudoscalar sgoldstino production in the three-body decay has been performed with the “ISTRA+” detector exposed to the negative secondary beam of the U-70 proton synchrotron. No signal is observed. An upper limit for the branching ratio , at 90% confidence level, is determined to be in the effective mass range from 0 to , excluding the region near where it degrades to . [Copyright &y& Elsevier]

Published
2004
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2. High statistic measurement of the <f>K-→π0e-ν</f> decay form-factors

Author

Yushchenko, O.P., Akimenko, S.A., Britvich, G.I., Datsko, K.V., Filin, A.P., Inyakin, A.V., Konstantinov, A.S., Konstantinov, V.F., Korolkov, I.Y., Khmelnikov, V.A., Leontiev, V.M., Novikov, V.P., Obraztsov, V.F., Polyakov, V.A., Romanovsky, V.I., Ronjin, V.M., Shelikhov, V.I., Smirnov, N.E., Tchikilev, O.G., and Uvarov, V.A.

Subjects
*NUCLEAR reactions, *NUCLEAR counters, *APPROXIMATION theory, *CALCULUS of tensors
Abstract

The decay K-→π0e-ν is studied using in-flight decays detected with the “ISTRA+” spectrometer. About 920K events are collected for the analysis. The λ+ slope parameter of the decay form-factor f+(t) in the linear approximation (average slope) is measured: λ+lin=0.02774±0.00047(stat)±0.00032(syst). The quadratic contribution to the form-factor was estimated to be λ′+=0.00084±0.00027(stat)±0.00031(syst). The linear slope, which has a meaning of df+(t)/dt&z.sfnc;t=0 for this fit, is λ+=0.02324±0.00152(stat)±0.00032(syst). The limits on possible tensor and scalar couplings are derived: fT/f+(0)=-0.012±0.021(stat)±0.011(syst), fS/f+(0)=-0.0037+0.0066-0.0056(stat)±0.0041(syst). [Copyright &y& Elsevier]

Published
2004
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