Measurement of the ratio B(D0-->K*-e+ nu e)/B(D0-->K-e+ nu e).

G Crawford,B Geiser,H Kagan,M Sapper,R S Galik,E I Shibata,J Dominick,T Letson,J D Lewis,P S Drell,M Battle,D R Johnson,J Kandaswamy,T Haupt,D Peterson,D L Kreinick,G S Ludwig,J Bartelt,M Modesitt,K K Gan,D M Coffman,M Worris,C Bebek,M Thusalidas,A J Sadoff,G C Moneti,D L Hartill,J Mevissen,M S Alam,K Kinoshita,M M Zoeller,P Wilson,E Nordberg,R Fulton,J Masui,J Whitmore,S E Csorna,R Ehrlich,M Pisharody,B Gittelman,B Nemati,B K Heltsley,D Riley,K Sparks,K Honscheid,E H Thorndike,N Katayama,R L Mcilwain,M Garcia-Sciveres,N Horwitz,D G Cassel,V Romero,A Silverman,N B Mistry,C R Ng,F Morrow,M D Mestayer,S W Gray,E Cheu ,A Freyberger ,I P J Shipsey ,P N Wang ,T Jensen ,T E Browder ,K Berkelman ,Y Rozen ,D Besson ,R Kass ,G Zhu ,V Jain ,H Kroha ,J Alexander ,D H Miller ,P D Rubin ,P Kim ,M Selen ,H M Worden ,R Kennett ,D N Brown ,R Malchow ,J L Rodriguez ,Wei-Ming Yao ,S F Schaffner ,M Goldberg ,D Bortoletto ,S Henderson ,A V Barnes ,M Artuso ,C R Sun ,P Avery ,S Stone ,J R Patterson ,I J Kim ,S Nandi ,C H Wang ,C P O’grady ,J Yelton ,T Skwarnicki ,F M Pipkin

doi:10.1103/physrevd.44.3394

Measurement of the ratio B(D0-->K*-e+ nu e)/B(D0-->K-e+ nu e).

G Crawford, B Geiser + Show 97 more

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https://doi.org/10.1103/physrevd.44.3394

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Journal: Physical Review D	Publication Date: Dec 1, 1991
Citations: 25	License type: other-oa

Affiliation: The Ohio State University, Harvard University, Cornell University, Purdue University West Lafayette, Vanderbilt University, University of Florida, University of Rochester, Syracuse University, Ithaca College, University at Albany, State University of New York, University of Minnesota, University of Kansas

#Cornell Electron Storage Ring #Semileptonic Branching Fractions + Show 8 more

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Abstract

Using the CLEO detector at the Cornell Electron Storage Ring, we have performed a direct measurement of the ratio of {ital D}{sup 0} semileptonic branching fractions into vector and pseudoscalar final states. We find {ital B}({ital D}{sup 0}{r arrow}{ital K}{sup *{minus}}{ital e+}{nu}{sub {ital e}})/{ital B}({ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{ital e+}{nu}{sub {ital e}})=0.51{plus minus} 0.18{plus minus}0.06, in agreement with the ratio derived by the E691 experiment which compares {ital D}{sup +} and {ital D}{sup 0} final states. We also set an upper limit on the ratio {ital B}({ital D}{sup 0}{r arrow}{ital {bar K}}{sup *0}{pi}{sup {minus}}{ital e+}{nu}{sub {ital e}})/{ital B}({ital D}{sup 0}{r arrow}{ital K}{sup *{minus}}{ital e}{nu}{sub {ital e}}){lt}0.64 at 90% confidence level.

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