|Vub| from exclusive semileptonic B--> rho decays


Flynn, Jonathan M., Nakagawa, Yoshiyuki, Nieves, Juan and Toki, Hiroshi (2008) |Vub| from exclusive semileptonic B--> rho decays. Physics Letters B, 675, 326-331. (doi:10.1016/j.physletb.2009.04.037).

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Description/Abstract

We use Omnes representations of the form factors V, A_1 and A_2 for exclusive semileptonic B--> rho decays, and apply them to combine experimental partial branching fraction information with theoretical calculations of the three form
factors to extract |Vub|.

We find a slightly lower result, |Vub|=(2.8 +- 0.2)x
10^{-3}, than the values extracted from exclusive semileptonic B-->pi decays and using all other inputs in CKM fits. The disagreement is greater when we compare to the result extracted from inclusive B -> X_u l nu decays

Item Type: Article
Related URLs:
Keywords: high energy physics, phenomenology
Subjects: Q Science > QC Physics
Divisions: University Structure - Pre August 2011 > School of Physics and Astronomy > Southampton High Energy Physics
ePrint ID: 144007
Date Deposited: 14 Apr 2010 13:59
Last Modified: 27 Mar 2014 19:05
URI: http://eprints.soton.ac.uk/id/eprint/144007

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