Measuring $|V_{ub}|$ with B$\to D_s^{+}{X}_u$ transitions

R. Aleksan, M. Zito, A. Le Yaouanc +3

We propose the determination of the CKM matrix element $|V_{ub}|$ by the measurement of the spectrum of $B\to D_s^{+}{X}_u$, dominated by the spectator quark model mechanism $\bar{b}…