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Model independent amplitude analyses of $\pi^- p_\uparrow \to \pi^- \pi^+ n$on polarized target at 17.2 GeV/c reveal resonant structure of S-wavetransversity amplitudes $|\bar S|^2\Sigma$ and $|S|^2\Sigma$ near 750 MeV.Simultaneous fit to $|\bar S|^2\Sigma$ and $|S|^2\Sigma$ with a single $\sigma$pole yields $m_\sigma = 775 \pm 17$ MeV and $\Gamma_\sigma = 147 \pm 33$ MeV.Simultaneous fit with two common $\sigma$ poles yields a lower $\chi^2/dpt$.Their resonance parameters are $m_\sigma = 786 \pm 24$ MeV, $\Gamma_\sigma =130 \pm 47$ MeV and $m_{\sigma^\prime} = 670 \pm 30$ MeV,$\Gamma_{\sigma^\prime} = 59 \pm 58$ MeV.Comment: 4 pages, 3 figure

Mass and width of σ(750) scalar meson from measurements of π[sup −]p→π[sup −]π[sup +]n on polarized target