K. J. Knoepfel

activity

20042014

most citedThe Physics of the B Factories

427 citations · 3.4k across the 61 of their papers we have counts for

collaborators

Showing 2010Show all

13 papers · 1 filter

hep-ex2010★ 23 cited

Observation of the Decay B^{-} \rightarrow D_{s}^{(*)+} K^{-} \ell^{-} \barν_{\ell}

The BABAR Collaboration, P. del Amo Sanchez

We report the observation of the decay $B^{-} \to D_{s}^{(*) +} K^{-} ℓ^{-} ν ˉ_{ℓ}$ based on $342 \mathrm {\,fb}^{-1}}$ of data collected at the $\Y4S$ resonance wi…

hep-ex2010

Studies of tau- -> eta.K-.nu and tau- -> eta.pi-.nu at BaBar and a search for a second-class current

The BaBar Collaboration, P. del Amo Sanchez

We report on analyses of tau lepton decays $τ^{-} \to η K^{-} ν_{τ}$ and $τ^{-} \to η π^{-} ν_{τ}$ , with $η \to π^{+} π^{-} π^{0}$ , using 470 fb $^{- 1}$ of data from the Babar experiment at PEP-II, coll…

hep-ex2010★ 42 cited

Measurement of the B^0 --> pi^-ell^+nu and B^+ --> eta^(')ell^+nu Branching Fractions, the B^0 --> pi^-ell^+nu and B^+ --> eta ell^+nu Form-Factor Shapes, and Determination of |V_{ub}|

The BABAR Collaboration, P. del Amo Sanchez etal

We report the results of a study of the exclusive charmless semileptonic decays, $B^{+} \to η^{(')} ℓ^{+} ν$ and $B^{0} \to π^{-} ℓ^{+} ν$ , undertaken wi…

hep-ex2010★ 36 cited

Exclusive Production of $D_{s}^{+} D_{s}^{-}$ , $D_{s}^{+} D_{s}^{-}$ , and $D_{s}^{+} D_{s}^{*-}$ via $e^{+} e^{-}$ Annihilation with Initial-State-Radiation

The BABAR Collaboration, P. del Amo Sanchez et al.

We perform a study of exclusive production of $D_{s}^{+} D_{s}^{-}$ , $D_{s}^{*+} D_{s}^{-}$ , and $D_{s}^{*+} D_{s}^{*-}$ final states in initial-state-radiation events from $e^{+} e^{-}$ annihilations at a…

hep-ex2010★ 46 cited

Measurement of the Absolute Branching Fractions for $D_{s}^{-} \to ℓ^{-} ν ˉ_{ℓ}$ and Extraction of the Decay Constant $f_{D_{s}}$

The BABAR Collaboration, P. del Amo Sanches

The absolute branching fractions for the decays $D_{s}^{-} \to ℓ^{-} ν ˉ_{ℓ}$ ( $ℓ = e$ , $μ$ , or $τ$ ) are measured using a data sample corresponding to an integrated lum…

hep-ex2010

Observation of the decay B0bar -> LambdaC antiproton pi0

The BABAR Collaboration, B. Aubert et al.

In a sample of 467 million $B B$ pairs collected with the BABAR detector at the PEP-II collider at SLAC we have observed the decay $\overline{B}^0\rightarrowΛ_c^+{\overlin…