Vertical bar V-ub vertical bar from exclusive semileptonic B ->pi decays
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Vertical bar V-ub vertical bar from exclusive semileptonic B ->pi decays

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Vertical bar V-ub vertical bar from exclusive semileptonic B ->pi decays

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Flynn, Jonathan M.; Nieves Pamplona, Juan Miguel
This document is a artículoDate2007

Este documento está disponible también en : http://hdl.handle.net/10550/39275
We use Omnes representations of the form factors f(+) and f(0) for exclusive semileptonic B -> pi decays, paying special attention to the treatment of the B* pole and its effect on f(+). We apply them to combine experimental partial branching fraction information with theoretical calculations of both form factors to extract vertical bar V-ub vertical bar. The precision we achieve is competitive with the inclusive determination and we do not find a significant discrepancy between our result. vertical bar V-ub vertical bar (3.90 +/- 0.32 +/- 0.18) x 10(-3), and the inclusive world average value, (4.45 +/- 0.20 +/- 0.26) x 10(-3).

    Flynn, Jonathan M. Nieves Pamplona, Juan Miguel 2007 Vertical bar V-ub vertical bar from exclusive semileptonic B ->pi decays Physics Letters B 649 4 269 274
http://dx.doi.org/10.1016/j.physletb.2007.04.028

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