Determination of the Λ c + spin via the reaction e + e − → Λ c Λ ¯ c
М. Н. Ачасов, P. Adlarson, S. Ahmed, M. Albrecht et autres
We report on a comparison of two possible ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}$ spin hypotheses, $J=\frac{1}{2}$ and $\frac{3}{2}$, via the process ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Lambda}}}_{c}^{+}{\overline{\mathrm{\ensuremath{\Lambda}}}}_{c}^{\ensuremath{-}}$, using the angular distributions of ${\mathrm{\ensuremath{\Lambda}}}_{c}^{+}$ decays into $p{K}_{S}^{0}$, $\mathrm{\ensuremath{\Lambda}}{\ensuremath{\pi}}^{+}$, ${\mathrm{\ensuremath{\Sigma}}}^{0}{\ensuremath{\pi}}^{+}$, and ${\mathrm{\ensuremath{\Sigma}}}^{+}{\ensuremath{\pi}}^{0}$. The data were recorded at $\sqrt{s}=4.6\text{ }\text{ }\mathrm{GeV}$ with the BESIII …
cn, ru, se, de, it, mn, us, tr, gb (code pays fourni par la source)