A proposal to the '$\frac{1}{2}$ vs. $\frac{3}{2}$ puzzle'

Qiang Li, Wei Feng, Guo-Li Wang

We reconsider the semileptonic decays of $B\to D_1^{(\prime )}l{\bar{\nu }}_l$. The previous theoretical calculations predict a significantly smaller rate for the semileptonic decay of $B…