Using 226x10(6) B (B) over bar events recorded on the Gamma(4S) resonance with the BABAR detector at the SLAC e(+)e(-) PEP-II storage rings, we reconstruct B(-)-> D(*0)e(-)(nu) over bar (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 rho(2)(A1), we obtain the results rho(2)(A1)=1.16 +/- 0.06 +/- 0.08, F(1)vertical bar V(cb)vertical bar=(35.9 +/- 0.6 +/- 1.4) x 10(-3), and B(B(-)-> D(*0)e(-)(nu) over bar (e)) = (5.56 +/- 0.08 +/- 0.41)%.
Measurement of the decay B(-)-> D(*0)e(-)(nu)over-bar(e)
Baracchini E;Ferroni F;
2008-01-01
Abstract
Using 226x10(6) B (B) over bar events recorded on the Gamma(4S) resonance with the BABAR detector at the SLAC e(+)e(-) PEP-II storage rings, we reconstruct B(-)-> D(*0)e(-)(nu) over bar (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 rho(2)(A1), we obtain the results rho(2)(A1)=1.16 +/- 0.06 +/- 0.08, F(1)vertical bar V(cb)vertical bar=(35.9 +/- 0.6 +/- 1.4) x 10(-3), and B(B(-)-> D(*0)e(-)(nu) over bar (e)) = (5.56 +/- 0.08 +/- 0.41)%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
