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

INSPIRE search

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

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

$\Gamma_{1}$

${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$

seen

356