The parity of the Λ + c is defined to be positive (as are the parities of the proton, neutron, and Λ). The quark content is ud c. Results of an analysis of pK − π + decays (JEZABEK 92) are consistent with J = 1/2. Nobody doubts that the spin is indeed 1/2. The only new measurements since our 2010 Review are of limits on rare or forbidden Λ + c → pℓ+ ℓ − and pℓ + ℓ + modes. We have omitted some results that have been superseded by later experiments. The omitted results may be found in earlier editions. Λ
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