Memorino on the `1/2 vs. 3/2 Puzzle' in $\bar{B}\to l\bar{\nu }{X}_c$ -- a Year Later and a Bit Wiser

I. I. Bigi, B. Blossier, A. Le Yaouanc +5

The OPE treatment that has been so successful in describing inclusive $\bar{B}\to l\bar{\nu }{X}_c$ decays yields sum rules (in particular the Uraltsev sum rule and its higher moments)…