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|Vub| from exclusive semileptonic B?? decays

Flynn, Jonathan M. and Nieves, Juan (2007) |Vub| from exclusive semileptonic B?? decays Physics Letters B, 649, (4), pp. 269-274. (doi:10.1016/j.physletb.2007.04.028).

Record type: Article


We use Omnès representations of the form factors f+ and f0 for exclusive semileptonic B?? 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 |Vub|. The precision we achieve is competitive with the inclusive determination and we do not find a significant discrepancy between our result, |Vub|=(3.90±0.32±0.18)×10?3, and the inclusive world average value, (4.45±0.20±0.26)×10?3 [Heavy Flavor Averaging Group (HFAG), hep-ex/0603003].

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Published date: 7 June 2007


Local EPrints ID: 57250
ISSN: 0370-2693
PURE UUID: 18be9563-d442-4498-b099-50d5648fb042
ORCID for Jonathan M. Flynn: ORCID iD

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Date deposited: 14 Aug 2008
Last modified: 17 Jul 2017 14:29

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Author: Jonathan M. Flynn ORCID iD
Author: Juan Nieves

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