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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 PDGID: B115

${{\mathit \Sigma}_{{{c}}}{(2520)}}$ $I(J^P)$ = $1(3/2^{+})$

Seen in the ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit \pi}^{\pm}}$ mass spectrum. The natural assignment is that this is the $\mathit J{}^{P} = 3/2{}^{+}$ excitation of the ${{\mathit \Sigma}_{{{c}}}{(2455)}}$, the charm counterpart of the ${{\mathit \Sigma}{(1385)}}$, but neither $\mathit J$ nor ${}^{P}$ has been measured.

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▸  exp ${{\mathit \Sigma}_{{{c}}}{(2520)}}$ MASSES

${{\mathit \Sigma}_{{{c}}}{(2520)}^{++}}$ MASS $2518.41$ $\pm0.22$ MeV (S = 1.3)

${{\mathit \Sigma}_{{{c}}}{(2520)}^{+}}$ MASS $2517.4^{+0.7}_{-0.5}$ MeV

${{\mathit \Sigma}_{{{c}}}{(2520)}^{0}}$ MASS $2518.48$ $\pm0.21$ MeV (S = 1.2)

▸  exp ${{\mathit \Sigma}_{{{c}}}{(2520)}}$ MASS DIFFERENCES

${\mathit m}_{{{\mathit \Sigma}_{{{c}}}{(2520)}^{++}}}-{\mathit m}_{{{\mathit \Lambda}_{{{c}}}^{+}}}$ $231.95$ $\pm0.16$ MeV (S = 1.6)

${\mathit m}_{{{\mathit \Sigma}_{{{c}}}{(2520)}^{+}}}-{\mathit m}_{{{\mathit \Lambda}_{{{c}}}^{+}}}$ $230.9^{+0.7}_{-0.5}$ MeV

${\mathit m}_{{{\mathit \Sigma}_{{{c}}}{(2520)}^{0}}}-{\mathit m}_{{{\mathit \Lambda}_{{{c}}}^{+}}}$ $232.02$ $\pm0.15$ MeV (S = 1.4)

${\mathit m}_{{{\mathit \Sigma}_{{{c}}}{(2520)}^{++}}}-{\mathit m}_{{{\mathit \Sigma}_{{{c}}}{(2520)}^{0}}}$ $0.01$ $\pm0.15$ MeV

▸  exp ${{\mathit \Sigma}_{{{c}}}{(2520)}}$ WIDTHS

${{\mathit \Sigma}_{{{c}}}{(2520)}^{++}}$ WIDTH $14.78^{+0.30}_{-0.40}$ MeV

${{\mathit \Sigma}_{{{c}}}{(2520)}^{+}}$ WIDTH $17.2^{+4.0}_{-2.2}$ MeV

${{\mathit \Sigma}_{{{c}}}{(2520)}^{0}}$ WIDTH $15.3^{+0.4}_{-0.5}$ MeV

${{\mathit \Sigma}_{{{c}}}{(2520)}}$ DECAY MODES
${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit \pi}}$ is the only strong decay allowed to a ${{\mathit \Sigma}_{{{c}}}}$ having this mass.
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit \Lambda}_{{{c}}}^{+}}{{\mathit \pi}}$ $\sim100$ $\%$ 179