We extract |Vub| comparing various experimental spectra of inclusive charmless semileptonic B decays (B → Xulνl), with the prediction of a model based on NNLL soft gluon resummation and on an analytic QCD coupling not containing the Landau pole. The value extracted is |Vub|=(3.69±0.13exp±0.31th)×10−3. This value is in good agreement with the value extracted from exclusive decays, while the agreement is less good with respect to previous inclusive measurements.
Vub from inclusive B decays and the analytic coupling model / G. Ferrera - In: IFAE Incontri di Fisica delle Alte Energie / [a cura di] G. Carlino, G. D’Ambrosio, L. Merola, P.i Paolucci, G. Ricciardi. - [s.l] : Springer, 2008. - ISBN 978-88-470-0746-8. - pp. 159-164 (( convegno Italian Meeting on High Energy Physics tenutosi a Napoli nel 2007 [10.1007/978-88-470-0747-5_24].
Vub from inclusive B decays and the analytic coupling model
G. Ferrera
2008
Abstract
We extract |Vub| comparing various experimental spectra of inclusive charmless semileptonic B decays (B → Xulνl), with the prediction of a model based on NNLL soft gluon resummation and on an analytic QCD coupling not containing the Landau pole. The value extracted is |Vub|=(3.69±0.13exp±0.31th)×10−3. This value is in good agreement with the value extracted from exclusive decays, while the agreement is less good with respect to previous inclusive measurements.
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