pdgLive Home   >   Baryon Summary Table   >   ${{\mathit \Lambda}_{{c}}{(2940)}^{+}}$

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: B122

${{\mathit \Lambda}_{{c}}{(2940)}^{+}}$ $I(J^P)$ = $0(3/2^{-})$

A narrow peak seen in ${{\mathit p}}{{\mathit D}^{0}}$ and in ${{\mathit \Lambda}_{{c}}^{+}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ . It is not seen in ${{\mathit p}}{{\mathit D}^{+}}$ , and therefore it is a ${{\mathit \Lambda}_{{c}}^{+}}$ and not a ${{\mathit \Sigma}_{{c}}}$. $\mathit J{}^{P} = 3/2-$ is favored, but not certain.

${{\mathit \Lambda}_{{c}}{(2940)}^{+}}$ MASS   $2939.6 {}^{+1.3}_{-1.5}$ MeV

${{\mathit \Lambda}_{{c}}{(2940)}^{+}}$ WIDTH   $20 {}^{+6}_{-5}$ MeV

${{\mathit \Lambda}_{{c}}{(2940)}^{+}}$ DECAY MODES
Mode   Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/ Conf. Level P(MeV/c)   $\Gamma_{1}$ ${{\mathit p}}{{\mathit D}^{0}}$   seen 420   $\Gamma_{2}$ ${{\mathit \Sigma}_{{c}}{(2455)}^{0}}{}^{,++}$ ${{\mathit \pi}^{\pm}}$   seen
FOOTNOTES