We report the observation of the decay B{sup -} {yields} D{sub s}{sup (*)+} K{sup -}{ell}{sup -}{bar {nu}}{sub {ell}} based on 342 fb{sup -1} of data collected at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II e{sup +}e{sup -} storage rings at SLAC. A simultaneous fit to three D{sub s}{sup +} decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B{sup -} {yields} D{sub s}{sup (*)+} K{sup -}{ell}{sup -}{bar {nu}}{sub {ell}} with a significance greater than five standard deviations (including systematic uncertainties) and measure its branching fraction to be {Beta}(B{sup -} {yields} D{sub s}{sup (*)+} K{sup -}{ell}{sup -}{bar {nu}}{sub ...
The authors report a measurement of the branching fractions for {bar B} {yields} D{sup (*)}{pi}{ell}...
We report the observation of the decay B- D(s)((*)+) K- ℓ- nu(ℓ) based on 342fb(-1) of data collecte...
We report the observation of the decay B- D(s)((*)+) K- ℓ- nu(ℓ) based on 342fb(-1) of data collecte...
We report the observation of the decay B- -> D-s(()*()+)K(-)l(-)(nu) over bar (l) based on 342 fb(-1...
We report the observation of the decay B(-) -> D(s)(()*()+)K(-)l(-)(nu) over bar (l) based on 342 fb...
7 pages, 4 figuresWe report the observation of the decay $B^{-} \rightarrow D^{(*)+}_{s} K^{-} \ell^...
7 pages, 4 figuresWe report the observation of the decay $B^{-} \rightarrow D^{(*)+}_{s} K^{-} \ell^...
We report a measurement of the branching fractions of {bar B} {yields} D** {ell}{sup -}{bar {nu}}{su...
We report the observation of the decay B(-) -> D(s)(()*()+)K(-)l(-)(nu) over bar (l) based on 342 fb...
We report the observation of the decay B[superscript -]→D[subscript s][superscript (*)+]K[superscrip...
The authors report a measurement of the branching fractions for {bar B} {yields} D{sup (*)}{pi}{ell}...
We report the observation of the decay B- D(s)((*)+) K- ℓ- nu(ℓ) based on 342fb(-1) of data collecte...
We report the observation of the decay B- D(s)((*)+) K- ℓ- nu(ℓ) based on 342fb(-1) of data collecte...
We report the observation of the decay B- -> D-s(()*()+)K(-)l(-)(nu) over bar (l) based on 342 fb(-1...
We report the observation of the decay B(-) -> D(s)(()*()+)K(-)l(-)(nu) over bar (l) based on 342 fb...
7 pages, 4 figuresWe report the observation of the decay $B^{-} \rightarrow D^{(*)+}_{s} K^{-} \ell^...
7 pages, 4 figuresWe report the observation of the decay $B^{-} \rightarrow D^{(*)+}_{s} K^{-} \ell^...
We report a measurement of the branching fractions of {bar B} {yields} D** {ell}{sup -}{bar {nu}}{su...
We report the observation of the decay B(-) -> D(s)(()*()+)K(-)l(-)(nu) over bar (l) based on 342 fb...
We report the observation of the decay B[superscript -]→D[subscript s][superscript (*)+]K[superscrip...
The authors report a measurement of the branching fractions for {bar B} {yields} D{sup (*)}{pi}{ell}...
We report the observation of the decay B- D(s)((*)+) K- ℓ- nu(ℓ) based on 342fb(-1) of data collecte...
We report the observation of the decay B- D(s)((*)+) K- ℓ- nu(ℓ) based on 342fb(-1) of data collecte...