848 research outputs found
Dalitz plot analyses of B-0 -> (D-DK+)-K-0 and B+-> (D)over-bar(-)D(0)K(+) decays
No full text© 2015, APS Journal
Study of the doubly and single Cabibbo suppressed decays D+ -> k+ p i+ pi- and D(s)-> k+ pi+ p-.
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Measurement of the Semileptonic Anti-B to D(*) Tau Anti-Nu/Tau Decays at BaBar
No full textSemileptonic B meson decays into final states containing the {tau} lepton are of interesting as they provide information on the Standard Model as well as a window on new physics effects. We present results on {bar B} {yields} D{sup (*)} {tau}{bar {nu}}{sub {tau}} decays where the second B in the event is fully reconstructed
Measurement of the ratio of the vector to pseudoscalar charm semileptonic decay rate Γ(D+→K¯*0μ+νμ)/Γ(D+→K¯0μ+νμ)
No full textAbstractUsing a high statistics sample of photo-produced charm particles from the FOCUS experiment at Fermilab, we report on the measurement of the ratio of semileptonic rates Γ(D+→Kπμ+νμ)/Γ(D+→K¯0μ+νμ)=0.625±0.045±0.034. Allowing for the Kπ S-wave interference measured in [J.M. Link, et al., FOCUS Collaboration, Phys. Lett. B 544 (2002) 89], we extract the vector to pseudoscalar ratio Γ(D+→K¯*0μ+νμ)/Γ(D+→K¯0μ+νμ)=0.594±0.043±0.033 and the ratio Γ(D+→K¯0μ+νμ)/Γ(D+→K−π+π+)=1.019±0.076±0.065. Our results show a lower ratio for Γ(D→K*ℓν)/Γ(D→Kℓν) than has been reported recently and indicate the current world average branching fractions for the decays D+→K¯0(μ+,e+)νμ,e are low. Using the world average B(D+→K−π+π+) [K. Hagiwara, et al., Particle Data Group Collaboration, Phys. Rev. D 66 (2002) 010001, and 2003 partial update for edition 2004 (http://pdg.lbl.gov)] we extract B(D+→K¯0μ+ν)=(9.27±0.69±0.59±0.61)%
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