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Study of the semileptonic charm decays D(0)-->pi(-)l(+)nu and D(0)-->K(-)l(+)nu |
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| Authors: | Huang G S Miller D H Pavlunin V Sanghi B Shibata E I Shipsey I P J Adams G S Chasse M Cummings J P Danko I Napolitano J Cronin-Hennessy D Park C S Park W Thayer J B Thorndike E H Coan T E Gao Y S Liu F Stroynowski R Artuso M Boulahouache C Blusk S Butt J Dambasuren E Dorjkhaidav O Menaa N Mountain R Muramatsu H Nandakumar R Redjimi R Sia R Skwarnicki T Stone S Wang J C Zhang K Mahmood A H Csorna S E Bonvicini G Cinabro D Dubrovin M Bornheim A Lipeles E Pappas S P Weinstein A J Briere R A Chen G P Ferguson T Tatishvili G Vogel H Watkins M E Adam N E Alexander J P Berkelman K Cassel D G |
| Affiliation: | Purdue University, West Lafayette, IN 47907, USA. |
| Abstract: | We investigate the decays D(0)-->pi(-)l(+)nu and D(0)-->K(-)l(+)nu, where l is e or mu, using approximately 7 fb(-1) of data collected with the CLEO III detector. We find R(0) identical with B(D(0)-->pi(-)e(+)nu)/B(D(0)-->K(-)e(+)nu)=0.082+/-0.006+/-0.005. Fits to the kinematic distributions of the data provide parameters describing the form factor of each mode. Combining the form factor results and R(0) gives |f(pi)(+)(0)|(2)|V(cd)|(2)/|f(K)(+)(0)|(2)|V(cs)|(2)=0.038(+0.006+0.005)(-0.007-0.003). |
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