Heavy baryon masses
  Simple and plausible rules are used to correlate the masses of the ground-state baryons containing single heavy ($b$ or $c$) quarks. A comparison with the experimental data shows that the observed mass difference between the $\Sigma_b$ and the $\Sigma^*_b$ is unexpectedly large. Predictions for the masses of the yet undiscovered heavy baryons are given. 
Agnieszka Zalewska (Institute of Nuclear Physics, Krak\'ow) and Kacper   Zalewski (Jagellonian University and Institute of N...