|Vub| from exclusive semileptonic B→π decays
Flynn, Jonathan M. and Nieves, Juan (2007) |Vub| from exclusive semileptonic B→π decays. Physics Letters B, 649, (4), 269-274. (doi:10.1016/j.physletb.2007.04.028).
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Description/Abstract
We use Omnès representations of the form factors f+ and f0 for exclusive semileptonic B→π 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].
| Item Type: | Article |
|---|---|
| ISSNs: | 0370-2693 (print) |
| Related URLs: | |
| Subjects: | Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy |
| Item ID: | 57250 |
| Date Deposited: | 14 Aug 2008 |
| Last Modified: | 02 Mar 2012 11:50 |
| Contributors: | Flynn, Jonathan M. (Author) Nieves, Juan (Author) |
| Date: | 7 June 2007 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/57250 |
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