A new model-independent method of determining Vub/Vcb and Vub
Abstract
In order to determine the ratio of CKM matrix elements Vub/Vcb (and Vub), we propose a new model-independent method based on the heavy quark effective theory, which is theoretically described by the phase space factor and the well-known perturbative QCD correction only. In the forthcoming asymmetric B-experiments with microvertex detectors, BABAR and BELLE, the total separation of b-->u semileptonic decays from the dominant b-->c semileptonic decays would be experimentally viable. We explore the possible experimental option: the measurement of inclusive hadronic invariant mass distributions. We also clarify the relevant experimental backgrounds.
- Publication:
-
Physics Letters B
- Pub Date:
- November 1997
- DOI:
- 10.1016/S0370-2693(97)01203-3
- arXiv:
- arXiv:hep-ph/9605201
- Bibcode:
- 1997PhLB..414..347K
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 13 pages, no figures, ordinary LaTeX. Many improvements. To be published at Phys. Lett. B