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

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

$\alpha _{+}$ FOR ${{\mathit \Sigma}^{+}}$ $\rightarrow$ ${{\mathit n}}{{\mathit \pi}^{+}}$

INSPIRE   JSON  (beta) PDGID:
S019A+
VALUE ($ 10^{-2} $) EVTS DOCUMENT ID TECN  COMMENT
$\bf{ 4.89 \pm0.26}$ OUR FIT
$\bf{ 4.9 \pm0.4}$ OUR AVERAGE  Error includes scale factor of 1.2.
$4.81$ $\pm0.31$ $\pm0.19$ 754k 1
ABLIKIM
2023BN
BES3 ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\overline{\mathit \Sigma}}^{-}}$
$3.7$ $\pm4.9$ 4101
BERLEY
1970B
HBC
$6.9$ $\pm1.7$ 35k
BANGERTER
1969
HBC ${{\mathit K}^{-}}{{\mathit p}}$ 0.4 ${\mathrm {GeV/}}\mathit c$
1  ABLIKIM 2023BN uses production through ${{\mathit e}^{+}}$ ${{\mathit e}}$ $\rightarrow$ ${{\mathit J / \psi}}$ $\rightarrow$ ${{\mathit \Sigma}^{+}}{{\overline{\mathit \Sigma}}^{-}}$ with 10G ${{\mathit J / \psi}}$ events.
References