Measurement of the decay B(-) ---> D(*0)e(-)nu[overline](e).
B Aubert, M Bona,Y Karyotakis,J P Lees,V Poireau,X Prudent,V Tisserand,A Zghiche,J Garra Tico,E Grauges,L Lopez,A Palano,M Pappagallo,G Eigen,B Stugu,L Sun,G S Abrams,M Battaglia, D N Brown,J Button-Shafer,R N Cahn,R G Jacobsen,J A Kadyk,L T Kerth,Yu G Kolomensky,G Kukartsev,G Lynch,I L Osipenkov,M T Ronan, K Tackmann,T Tanabe,W A Wenzel,P Del Amo Sanchez,C M Hawkes,N Soni,A T Watson,H Koch,T Schroeder,D Walker,D J Asgeirsson,T Cuhadar-Donszelmann,B G Fulsom,C Hearty,T S Mattison,J A McKenna,M Barrett, A Khan,M Saleem,L Teodorescu,V E Blinov,A D Bukin,A R Buzykaev,V P Druzhinin,V B Golubev,A P Onuchin,S I Serednyakov,Yu I Skovpen,E P Solodov,K Yu Todyshev,M Bondioli,S Curry, I Eschrich,D Kirkby,A J Lankford,P Lund,M Mandelkern,E C Martin,D P Stoker,S Abachi,C Buchanan,J W Gary,F Liu,O Long,B C Shen,G M Vitug, L Zhang,H P Paar,S Rahatlou,V Sharma,C Campagnari,T M Hong,D Kovalskyi,J D Richman,T W Beck,A M Eisner,C J Flacco,C A Heusch, J Kroseberg,W S Lockman,T Schalk,B A Schumm,A 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Physical review letters（2008）
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摘要
Using 226 x 10(6) BB[overline] events recorded on the Upsilon(4S) resonance with the BABAR detector at the SLAC e(+)e(-) PEP-II storage rings, we reconstruct B(-) ---> D(*0)e(-)nu[overline](e) decays using the decay chain D(*0) --> D(0)pi(0) and D(0)-->K(-)pi(+). From the dependence of their differential rate on w, the dot product of the four velocities of B(-) and D(*0), and using the form factor description by Caprini et al. with the parameters F(1) and rhoA(1)(2), we obtain the results rhoA(1)(2) = 1.16+/-0.06+/-0.08, F(1)|V(cb)|=(35.9+/-0.6+/-1.4) x 10(-3), and B(B(-) --> D(*0)e(-)nu[overline](e))=(5.56+/-0.08+/-0.41)%.
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