Study of the Decays D0→π-e+νe, D0→K-e+νe, D+→π0e+νe, and D+→K̄0e+νe

Daniel P Cronin-Hennessy,K. Y. Gao,D. T. Gong,J. Hietala,Yuichi Kubota,T. Klein,B. W. Lang,Ron Poling,A. W. Scott,A. Smith,P. Zweber,Sean A Dobbs,Z. Metreveli,Kamal K. Seth,Amiran Tomaradze,J. A. Ernst,Horst Severini,S. A. Dytman,W. Love,V. Savinov,O. Aquines,Z. Li,Alan D. Lopez,S. Mehrabyan, H. Mendez,J. E. Ramirez,G. S. Huang,D. H. Miller,V. Pavlunin,B. Sanghi,I. P.J. Shipsey,B. Xin,G. S. Adams,M. Anderson,J. P. Cummings,I. Danko,J. Napolitano,Q. He,J. Insler,H. Muramatsu,C. S. Park,E. H. Thorndike,F. Yang,T. E. Coan,Y. S. Gao,F. Liu,Marina Artuso,S. Blusk,J. Butt,Li Jingyuan,N. Menaa,R. Mountain,S. Nisar, K. Randrianarivony,R. Redjimi,R. Sia,Tomasz Skwarnicki,Sheldon Stone,J. C. Wang,K. Zhang,S. E. Csorna,G. Bonvicini,D. Cinabro,M. Dubrovin,A. Lincoln,D. M. Asner,K. W. Edwards,R. A. Briere,I. C. Brock, Junjie Chen,T. Ferguson,G. Tatishvili,Hans J. Vogel,M. E. Watkins,Jonathan L. Rosner,N. E. Adam,J. P. Alexander,Karl Berkelman,D. G. Cassel,J. E. Duboscq,K. M. Ecklund,R. Ehrlich,L. Fields,L. K. 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,Peter Onyisi,Juliet Ritchie Patterson, D. Peterson,J. Pivarski,D. Riley,Anders Ryd

Physical Review Letters（2008）

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摘要

By using 1.8x10{sup 6} DD pairs, we have measured B(D{sup 0}{yields}{pi}{sup -}e{sup +}{nu}{sub e})=0.299(11)(9)%, B(D{sup +}{yields}{pi}{sup 0}e{sup +}{nu}{sub e})=0.373(22)(13)%, B(D{sup 0}{yields}K{sup -}e{sup +}{nu}{sub e})=3.56(3)(9)%, and B(D{sup +}{yields}K{sup 0}e{sup +}{nu}{sub e})=8.53(13)(23)% and have studied the q{sup 2} dependence of the form factors. By combining our results with recent lattice calculations, we obtain |V{sub cd}|=0.217(9)(4)(23) and |V{sub cs}|=1.015(10)(11)(106)

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