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IHEP 2011 - 30 (In Russian) | |
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M.Yu.Bogolyubskij, S.V.Evdokimov, V.I.Izucheev,
D.I.Patalakha, B.V.Polishchuk, S.A.Sadovskij,
A.S.Solov'ev, M.V.Stolpovskij, Yu.V.Kharlov
(IHEP, Protvino, Russia),
N.A.Kuz'min, V.P.Obudovskij, Yu.P.Petuxov, S.Ya.Sychkov
(JINR, Dubna, Russia)
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| Mass measurements of the light neutral
mesons in meson-nuclei interactions at momentum of 7 GeV/c the
HYPERON setup |
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| Protvino, 2011. – p. 22, figs. 15, tables 7, refs.: 13. | ||
With the Hyperon-M setup in the meson-nuclei interactions at momentum of 7 GeV/c the mass mesurements of $\pi^o$-, $\eta$-, $K^o$-, $\omega$- and $f_2(1270)$- mesons have been performed with six targets: Be, C, Al, Cu, Sn, Pb. The experiment is not sensitive to the expected effects of $\omega$-mass midification in nuclear matter. As for the parameters of $f_2(1270)$-meson the obtained values are in statistical agreement with the table values for $f_2(1270)$-meson. The average values of the mass and width over all data of experiment, $m_{f_2} = 1275.8\pm1.0(stat.)\pm0.4(syst.)~MeV/c^2$ and $\Gamma_{f_2} = 190.3\pm1.9(stat.)\pm1.8(syst.)~MeV/c^2$, are in a good agreement with the table data. At the same time the experiment data are not allow to eliminate the possible effect of $f_2(1270)$-meson mass modification at the level better than $0.4\%$ at heavy nuclei.
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