Predicting the masses of baryons containing one or two heavy quarks.

Predicting the masses of baryons containing one or two heavy quarks The Feynman-Hellmann theorem and semiempirical mass formulas are used to predict the masses of baryons containing one or two heavy quarks. In particular, the mass of the Λ b is predicted to be 5620 ± 40 MeV, a value consistent with measurements. In a recent paper [1], the Feynman-Hellmann theorem [2,3] and semiempirical mass formulas [4,5,1] were used as tools enabling the prediction of the masses of a