Experimental Limits on Weak Annihilation Contributions to b -->u ell nu Decay
Rosner, J. L · Collaboration, CLEO
Original · EN
We present the first experimental limits on high-q² contributions to charmless semileptonic B decays of the form expected from the Weak Annihilation (WA) decay mechanism. Such contributions could bias determinations of |Vub| from inclusive measurements of B-> Xᵤ lnu. Using a wide range of models based on available theoretical input we set a limit of (GammaWA/Gammab->u) < 7.4% (90% confidence level) on the WA fraction, and assess the impact on previous inclusive determinations of |Vub|.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.