Inclusive charmless semileptonic decay of Λ_b and Br(b ---> X_u l ν_l)
| dc.creator | Arunagiri, Somasundaram | |
| dc.creator | Yamamoto, Hitoshi | |
| dc.date | 2000-05-26 | |
| dc.date.accessioned | 2026-07-07T03:41:34Z | |
| dc.date.available | 2026-07-07T03:41:34Z | |
| dc.description | We study the inclusive charmless semileptonic decay of $Λ_b$, $Λ_b \to X_u l ν_l$, in the framework of heavy quark expansion and find that the rate is substantially enhanced by spectator effect. We obtain $Br(b \to X_u l ν_l)$ to be $1.13 \times 10^{-3}$ for $|V_{ub}| = 3.3 \times 10^{-3}$. We discuss our result in light of the recent LEP measurements of the charmless semileptonic branching ratio where such enhancement was not taken into account in extracting $|V_{ub}|$. | |
| dc.description | Five pages (in RevTex) including a figure | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0005266 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0005266 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/39630 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Inclusive charmless semileptonic decay of Λ_b and Br(b ---> X_u l ν_l) | |
| dc.type | text |