${{\mathit \Lambda}_{{{c}}}^{+}}$ DECAY PARAMETERS

See the review on ``Baryon Decay Parameters.''

$\alpha $ FOR ${{\mathit \Lambda}_{{{c}}}^{+}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}^{+}}$

INSPIRE   JSON  (beta) PDGID:
S033A11
VALUE EVTS DOCUMENT ID TECN  COMMENT
$\bf{ -0.546 \pm0.035}$ OUR AVERAGE
$-0.516$ $\pm0.041$ $\pm0.021$ 1k 1
AAIJ
2024AH
 LHCB ${{\mathit p}}{{\mathit p}}$ at 13 TeV
$-0.585$ $\pm0.049$ $\pm0.018$ 11k 2
LI
2023C
 BELL ${{\mathit e}^{+}}{{\mathit e}^{-}}\approx{}{{\mathit \Upsilon}{(nS)}}$, n=1,...,5
1  AAIJ 2024AH also reports the measurements of the decay parameters $\beta $ and $\gamma $, the phase difference $\Delta $, the $\mathit CP$ asymmetry ${{\mathit R}_{{{\beta}}}}$ and the $\mathit CP$ average ${{\mathit R}_{{{\beta}}}^{\,'}}$ for ${{\mathit \Lambda}_{{{c}}}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit K}}$ and its charge-conjugated decay.
2  LI 2023C obtained the value by a fit for the product $\alpha $ ${\times }$ $\alpha {}^{avg}_{{{\mathit \Lambda}}}$, and dividing by the value $\alpha {}^{avg}_{{{\mathit \Lambda}}}$ = $0.7542$ $\pm0.0026$ reported in ABLIKIM 2022AG.
References