dc.contributor.author | Besson, David Zeke | |
dc.date.accessioned | 2007-04-13T20:08:08Z | |
dc.date.available | 2007-04-13T20:08:08Z | |
dc.date.issued | 2006-03 | |
dc.identifier.citation | Rosner, JL, Adam, NE, et al. Experimental limits on weak annihilation contributions to b -> ul nu decays. PHYSICAL REVIEW LETTERS. March 2006. 96(12) | |
dc.identifier.uri | http://hdl.handle.net/1808/1420 | |
dc.description.abstract | We present the first experimental limits on high-q(2) contributions to charmless semileptonic B decays of the form expected from the weak annihilation (WA) decay mechanism. Such contributions could bias determinations of vertical bar V(ub)vertical bar from inclusive measurements of B -> X(u)l nu. Using a wide range of models based on available theoretical input we set a limit of Gamma(WA)/Gamma(b -> u)< 7.4% (90% confidence level) on the WA fraction, and assess the impact on previous inclusive determinations of vertical bar V(ub)vertical bar. | |
dc.language.iso | en_US | |
dc.publisher | AMERICAN PHYSICAL SOC | |
dc.relation.isversionof | http://publish.aps.org/ | |
dc.title | Experimental limits on weak annihilation contributions to b -> ul nu decays | |
dc.type | Article | |
dc.rights.accessrights | openAccess | |