Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2006-05-24
Eur.Phys.J.C47:31-37,2006
Physics
High Energy Physics
High Energy Physics - Experiment
Scientific paper
10.1140/epjc/s2006-02558-x
Using the data of about 33 pb$^{-1}$ collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied the exclusive semileptonic decays $D^+ \to K^-\pi^+ e^+\nu_e$, $D^0 \to \bar K^0\pi^-e^+\nu_e$, $D^+ \to \bar K^{*0}e^+\nu_e$ and $D^0 \to K^{*-}e^+\nu_e$. The absolute branching fractions for the decays are measured to be ${BF}(D^+ \to K^-\pi^+e^+\nu_e)=(3.50\pm0.75\pm0.27)%$, ${BF}(D^0 \to \bar K^0\pi^-e^+\nu_e)=(2.61\pm1.04\pm0.28)%$, ${BF}(D^+ \to \bar K^{*0}e^+\nu_e)=(5.06\pm1.21\pm0.40)%$ and ${BF}(D^0 \to K^{*-}e^+\nu_e)=(2.87\pm 1.48\pm 0.39)%$. The ratio of the vector to pseudoscalar semileptonic decay rates $\Gamma(D^+\to\bar K^{*0}e^+\nu_e)/\Gamma(D^+\to\bar K^0e^+\nu_e)$ is determined to be $0.57\pm0.17\pm0.02$.
No associations
LandOfFree
Measurements of the absolute branching fractions for D->Kbar pi e+ nu_e, D-> K*bar e+nu_e and determination of Gamma(D+ -> K*0bar e+ nu_e)/Gamma(D+ -> K0bar e+nu_e) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Measurements of the absolute branching fractions for D->Kbar pi e+ nu_e, D-> K*bar e+nu_e and determination of Gamma(D+ -> K*0bar e+ nu_e)/Gamma(D+ -> K0bar e+nu_e), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurements of the absolute branching fractions for D->Kbar pi e+ nu_e, D-> K*bar e+nu_e and determination of Gamma(D+ -> K*0bar e+ nu_e)/Gamma(D+ -> K0bar e+nu_e) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-71548