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${{\mathit \Lambda}}$ DECAY PARAMETERS

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

R = $\vert G_{E}/G_{M}\vert $ in ${{\mathit \Lambda}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \pi}^{-}}$ , ${{\overline{\mathit \Lambda}}}$ $\rightarrow$ ${{\overline{\mathit p}}}{{\mathit \pi}^{+}}$

INSPIRE   PDGID:

S018A02

VALUE DOCUMENT ID TECN  COMMENT $0.96$ $\pm0.14$ $\pm0.02$ 1 ABLIKIM 2019 BF BES3 ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\overline{\mathit \Lambda}}}{{\mathit \Lambda}}$ at $\sqrt {s }$ = 2.396 GeV 1  Determined using the latest BES-III value on the asymmetry parameter ${{\mathit \alpha}}$ = $0.750$ $\pm0.010$.

References:

ABLIKIM 2019BF PRL 123 122003 Complete Measurement of the $\Lambda$ Electromagnetic Form Factors

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