Semitauonic B Decay Anomaly

E. C. F. S. Fortes, Shmuel Nussinov

The anomalously large experimentally measured ratios of the semitauonic decay $B\to D^{(\ast )}+\tau +\nu$ and the corresponding semileptonic $B\to D^{\ast }+ł+{\bar{\nu }}_l$ disagre…