Evidence for a scalar meson resonance in the π−p→nωφreaction

A V Ivashin, A Ekimov,Yu Gouz, I A Kachaev,A N Karyukhin,V F Konstantinov, Mikhail Makouski,V I Matveev,A G Myagkov, B Polyakov, D I Ryabchikov, N Shalanda, M M Soldatov, A V Solodkov,O Solovianov, V P Sugonyaev, Y Salomatin, E P Volkov,Yu A Khokhlov,V Nikolaenko,A I Zaitsev

AIP Conference Proceedings（2010）

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摘要

The charge-exchange reaction it pi(-) p -> n omega(780)phi(1020) is studied with the YES setup. The (omega phi) system is observed at relatively low background. Its invariant mass distribution peaks near threshold. The two-particles partial wave analyses shows that the J(PC) = 0(++) state dominates. This wave is compared with 0(++) component in the (omega omega) system at the comparable mass, which was measured earlier.

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quark model

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