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 search

${{\mathit \Xi}_{{{c}}}{(2790)}}$ $I(J^P)$ = $1/2(1/2^{-})$

Seen in ${{\mathit \Xi}_{{{c}}}^{\,'}}{{\mathit \pi}}$ decays. The simplest assignment, based on the mass, width, and decay mode, is that this belongs in the same SU(4) multiplet as the ${{\mathit \Lambda}{(1405)}}$ and the ${{\mathit \Lambda}_{{{c}}}{(2595)}^{+}}$, but the spin and parity have not been measured.

${{\mathit \Xi}_{{{c}}}{(2790)}}$ MASSES

${{\mathit \Xi}_{{{c}}}{(2790)}^{+}}$ MASS

$2792.0 \pm0.5$ MeV

${{\mathit \Xi}_{{{c}}}{(2790)}^{0}}$ MASS

$2794.0 \pm0.5$ MeV

${{\mathit \Xi}_{{{c}}}{(2790)}}–{{\mathit \Xi}_{{{c}}}^{\,'}}$ MASS DIFFERENCES

${\mathit m}_{{{\mathit \Xi}_{{{c}}}{(2790)}^{+}}}–{\mathit m}_{{{\mathit \Xi}_{{{c}}}^{'0}}}$

$213.20 \pm0.22$ MeV

${\mathit m}_{{{\mathit \Xi}_{{{c}}}{(2790)}^{0}}}–{\mathit m}_{{{\mathit \Xi}_{{{c}}}^{'+}}}$

$215.70 \pm0.22$ MeV

${{\mathit \Xi}_{{{c}}}{(2790)}^{+}}–{{\mathit \Xi}_{{{c}}}{(2790)}^{0}}$ MASS DIFFERENCE

$-2.0 \pm0.7$ MeV