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25 April 2024

» pubmed » pmid16605896

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Experimental limits on weak annihilation contributions to decays
J L Rosner ; N E Adam ; J P Alexander ; K Berkelman ; D G Cassel ; J E Duboscq ; K M Ecklund ; R Ehrlich ; L Fields ; L Gibbons ; R Gray ; S W Gray ; D L Hartill ; B K Heltsley ; D Hertz ; C D Jones ; J Kandaswamy ; D L Kreinick ; V E Kuznetsov ; H Mahlke-Krüger ; T O Meyer ; P U E Onyisi ; J R Patterson ; D Peterson ; E A Phillips ; J Pivarski ; D Riley ; A Ryd ; A J Sadoff ; H Schwarthoff ; X Shi ; S Stroiney ; W M Sun ; T Wilksen ; M Weinberger ; S B Athar ; P Avery ; L Breva-Newell ; R Patel ; V Potlia ; H Stoeck ; J Yelton ; P Rubin ; C Cawlfield ; B I Eisenstein ; I Karliner ; D Kim ; N Lowrey ; P Naik ; C Sedlack ; M Selen ; J J Thaler ; E J White ; J Wiss ; M R Shepherd ; D M Asner ; K W Edwards ; D Besson ; T K Pedlar ; D Cronin-Hennessy ; K Y Gao ; D T Gong ; J Hietala ; Y Kubota ; T Klein ; B W Lang ; R Poling ; A W Scott ; A Smith ; S Dobbs ; Z Metreveli ; K K Seth ; A Tomaradze ; P Zweber ; J Ernst ; K Arms ; H Severini ; S A Dytman ; W Love ; S Mehrabyan ; J A Mueller ; V Savinov ; Z Li ; A Lopez ; H Mendez ; J Ramirez ; G S Huang ; D H Miller ; V Pavlunin ; B Sanghi ; I P J Shipsey ; G S Adams ; M Anderson ; J P Cummings ; I Danko ; J Napolitano ; Q He ; H Muramatsu ; C S Park ; E H Thorndike ; T E Coan ; Y S Gao ; F Liu ; R Stroynowski ; M Artuso ; C Boulahouache ; S Blusk ; J Butt ; J Li ; N Menaa ; R Mountain ; S Nisar ; K Randrianarivony ; R Redjimi ; R Sia ; T Skwarnicki ; S Stone ; J C Wang ; K Zhang ; S E Csorna ; G Bonvicini ; D Cinabro ; M Dubrovin ; A Lincoln ; A J Weinstein ; R A Briere ; G P Chen ; J Chen ; T Ferguson ; G Tatishvili ; H Vogel ; M E Watkins ; ;
Date:	31 Mar 2006
Journal:	Phys Rev Lett, 96 (12), 121801
Abstract:	We present the first experimental limits on high-q2 contributions to charmless semileptonic decays of the form expected from the weak annihilation (WA) decay mechanism. Such contributions could bias determinations of /Vub/ from inclusive measurements of B-->Xulupsilon. Using a wide range of models based on available theoretical input we set a limit of GammaWA/Gammab-->u<7.4% (90% confidence level) on the WA fraction, and assess the impact on previous inclusive determinations of /Vub/.
Source:	PubMed, pmid16605896
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