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CHARMED BARYONS ($\mathit C$ = $+1$) ${{\mathit \Lambda}_{{{c}}}^{+}}$ = ${{\mathit u}}{{\mathit d}}{{\mathit c}}$ , ${{\mathit \Sigma}_{{{c}}}^{++}}$ = ${{\mathit u}}{{\mathit u}}{{\mathit c}}$ , ${{\mathit \Sigma}_{{{c}}}^{+}}$ = ${{\mathit u}}{{\mathit d}}{{\mathit c}}$ , ${{\mathit \Sigma}_{{{c}}}^{0}}$ = ${{\mathit d}}{{\mathit d}}{{\mathit c}}$ , ${{\mathit \Xi}_{{{c}}}^{+}}$ = ${{\mathit u}}{{\mathit s}}{{\mathit c}}$ , ${{\mathit \Xi}_{{{c}}}^{0}}$ = ${{\mathit d}}{{\mathit s}}{{\mathit c}}$ , ${{\mathit \Omega}_{{{c}}}^{0}}$ = ${{\mathit s}}{{\mathit s}}{{\mathit c}}$

INSPIRE   JSON  (beta) PDGID: B150

${{\mathit \Lambda}_{{{c}}}{(2765)}^{+}}$ $~$or ${{\mathit \Sigma}_{{{c}}}{(2765)}}$ $I(J^P)$ = $?(?^{?})$

A broad, statistically significant peak ($997$ ${}^{+141}_{-129}$ events) seen in ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ . However, nothing at all is known about its quantum numbers, including whether it is a ${{\mathit \Lambda}_{{{c}}}^{+}}$ or a ${{\mathit \Sigma}_{{{c}}}}$, or whether the width might be due to overlapping states.

${{\mathit \Lambda}_{{{c}}}{(2765)}^{+}}$ MASS   $2766.6 \pm2.4$ MeV

${{\mathit \Lambda}_{{{c}}}{(2765)}^{+}}–{{\mathit \Lambda}_{{{c}}}^{+}}$ MASS DIFFERENCE   $480.1 \pm2.4$ MeV

${{\mathit \Lambda}_{{{c}}}{(2765)}^{+}}$ WIDTH   $50$ MeV

Decay Modes
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$   seen 356
FOOTNOTES