Article ID Journal Published Year Pages File Type
5495122 Physics Letters B 2017 5 Pages PDF
Abstract
We use recent Belle results on B¯0→D⁎+l−ν¯l decays to extract the CKM element |Vcb| with two different but well-founded parameterizations of the form factors. We show that the CLN and BGL parameterizations lead to quite different results for |Vcb| and provide a simple explanation of this unexpected behaviour. A long lasting discrepancy between the inclusive and exclusive determinations of |Vcb| may have to be thoroughly reconsidered.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Nuclear and High Energy Physics
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