Hyperfine mixing in $b\to c$ semileptonic decay of doubly heavy baryons

C. Albertus, E. Hernández, J. Nieves

We qualitatively corroborate the results of W. Roberts and M. Pervin in Int. J. Mod. Phys. A 24, 2401 (2009) according to which hyperfine mixing greatly affects the decay widths of…