|V{sub ub}| from exclusive semileptonic B{yields}{pi} decays revisited

Flynn, Jonathan.M. and Nieves, Juan (2007) |V{sub ub}| from exclusive semileptonic B{yields}{pi} decays revisited Physical Review D, 76, (3), 031302-[3pp]. (doi:10.1103/PHYSREVD.76.031302).


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We update the extraction of |V{sub ub}| from exclusive semileptonic B{yields}{pi} decays, combining experimental partial branching fraction information with theoretical form-factor calculations, using the recently revised HPQCD results for the form factors f{sub +} and f{sub 0}. We use Omnes representations to provide the required parametrizations of the form factors. The extracted value is |V{sub ub}|=(3.47{+-}0.29{+-}0.03)x10{sup -3}, in striking agreement with |V{sub ub}| extracted using all other inputs in CKM fits and showing some disagreement with |V{sub ub}| extracted from inclusive semileptonic B{yields}{pi} decays.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1103/PHYSREVD.76.031302
ISSNs: 1550-7998 (print)
ePrint ID: 57251
Date :
Date Event
1 August 2007Published
Date Deposited: 14 Aug 2008
Last Modified: 16 Apr 2017 17:39
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/57251

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