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${{\mathit \Sigma}^{+}}$ MASS
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$1189.37 \pm0.07$ MeV (S = 2.2)
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${{\mathit \Sigma}^{+}}$ MEAN LIFE
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$(8.018 \pm0.026) \times 10^{-11}$ s
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(${\mathit \tau}_{{{\mathit \Sigma}^{+}}}{\mathit \tau}_{{{\overline{\mathit \Sigma}}^{-}}}$) $/$ ${\mathit \tau}_{{{\mathit \Sigma}^{+}}}$
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$-0.0006 \pm0.0012$
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${{\mathit \Sigma}^{+}}$ MAGNETIC MOMENT
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$2.458 \pm0.010$ $\mu _{\mathit N}$ (S = 2.1)
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(${\mathit \mu}_{{{\mathit \Sigma}^{+}}}$ $+$ ${\mathit \mu}_{{{\overline{\mathit \Sigma}}^{-}}}$) $/$ ${\mathit \mu}_{{{\mathit \Sigma}^{+}}}$
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$0.014 \pm0.015$
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$\alpha _{0}$ FOR ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}^{0}}$
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$-0.980 {}^{+0.017}_{-0.015}$
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$\phi _{0}$ ANGLE FOR ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}^{0}}$ ($\phi _{0}$ = $\beta /\gamma $)
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$36 \pm34$ $^\circ{}$
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$\alpha _{+}$ $/$ $\alpha _{0}$
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$-0.069 \pm0.013$
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$\alpha _{+}$ FOR ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}^{+}}$
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$0.068 \pm0.013$
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$\phi _{+}$ ANGLE FOR ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}^{+}}$ ($\phi _{+}$ = $\beta /\gamma $)
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$167 \pm20$ $^\circ{}$ (S = 1.1)
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$\alpha _{\gamma }$ FOR ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \gamma}}$
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$-0.76 \pm0.08$
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