pdgLive Home   >   Baryon Summary Table   >   ${{\mathit \Xi}_{{{c}}}{(2645)}}$

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 PDGID: B146

${{\mathit \Xi}_{{{c}}}{(2645)}}$ $I(J^P)$ = $1/2(3/2^{+})$

The natural assignment is that this is the $\mathit J{}^{P} = 3/2{}^{+}$ excitation of the ${{\mathit \Xi}_{{{c}}}}$ in the same SU(4) multiplet as the ${{\mathit \Delta}{(1232)}}$, but the quantum numbers have not been measured.

Expand/Collapse All

▸  exp ${{\mathit \Xi}_{{{c}}}{(2645)}}$ MASSES

${{\mathit \Xi}_{{{c}}}{(2645)}^{+}}$ MASS $2645.10$ $\pm0.30$ MeV (S = 1.2)

${{\mathit \Xi}_{{{c}}}{(2645)}^{0}}$ MASS $2645.7^{+0.6}_{-0.7}$ MeV

▸  exp ${{\mathit \Xi}_{{{c}}}{(2645)}}&$ MASS DIFFERENCES

${\mathit m}_{{{\mathit \Xi}_{{{c}}}{(2645)}^{+}}}-{\mathit m}_{{{\mathit \Xi}_{{{c}}}^{0}}}$ $174.66$ $\pm0.09$ MeV

${\mathit m}_{{{\mathit \Xi}_{{{c}}}{(2645)}^{0}}}-{\mathit m}_{{{\mathit \Xi}_{{{c}}}^{+}}}$ $178.45$ $\pm0.10$ MeV

${{\mathit \Xi}_{{{c}}}{(2645)}^{+}}-{{\mathit \Xi}_{{{c}}}{(2645)}^{0}}$ MASS DIFFERENCE $-1.06$ $\pm0.27$ MeV (S = 1.1)

▸  exp ${{\mathit \Xi}_{{{c}}}{(2645)}}$ WIDTHS

${{\mathit \Xi}_{{{c}}}{(2645)}^{+}}$ WIDTH $2.14$ $\pm0.19$ MeV (S = 1.1)

${{\mathit \Xi}_{{{c}}}{(2645)}^{0}}$ WIDTH $2.35$ $\pm0.22$ MeV

${{\mathit \Xi}_{{{c}}}{(2645)}}$ DECAY MODES
${{\mathit \Xi}_{{{c}}}}{{\mathit \pi}}$ is the only strong decay allowed to a ${{\mathit \Xi}_{{{c}}}}$ resonance having this mass.
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit \Xi}_{{{c}}}^{0}}{{\mathit \pi}^{+}}$ seen 102   $\Gamma_{2}$ ${{\mathit \Xi}_{{{c}}}^{+}}{{\mathit \pi}^{-}}$ seen 106