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${{\mathit \Sigma}^{+}}$ DECAY PARAMETERS

See the ``Note on Baryon Decay Parameters'' in the neutron Listings. A few early results have been omitted.

$\phi _{0}$ ANGLE FOR ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}^{0}}$ ($\phi _{0}$ = $\beta /\gamma $)

INSPIRE   PDGID:

S019F0

VALUE ($^\circ{}$) EVTS DOCUMENT ID TECN  COMMENT $\bf{ 36 \pm34}$ OUR AVERAGE $38.1$ ${}^{+35.7}_{-37.1}$ 1259 1 LIPMAN 1973 OSPK ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\mathit K}^{+}}$ $22$ $\pm90$ 2 HARRIS 1970 OSPK ${{\mathit \pi}^{+}}$ ${{\mathit p}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\mathit K}^{+}}$ 1  Decay proton scattered off aluminum. 2  Decay protons scattered off carbon.

References:

LIPMAN 1973 PL 43B 89 Test of the ${{\mathit \Delta}}\mathit I={1\over 2}$ Rule and the Lee-Sugawara Relation in the Decay ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}^{0}}$ HARRIS 1970 PRL 24 165 Proton Polarization in ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}^{0}}$

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