U. Langenegger

activity

19962025

most citedObservation of a Broad Structure in the

π^{+} π^{-} J / ψ

Mass Spectrum around 4.26 GeV/

c^{2}

744 citations · 3.2k across the 69 of their papers we have counts for

collaborators

Showing 2004Show all

3 papers · 1 filter

hep-ex2004

Inclusive Semileptonic B Decays at BABAR

Urs Langenegger

We report updates on two analyses of inclusive semileptonic B decays based on a dataset of 89 million BB events recorded with the BABAR detector at the Y(4S) resonance. Events are…

hep-ex2004★ 70 cited

Observation of the Decay B=> J/psi eta K and Search for X(3872)=> J/psi eta

B. Aubert

We report the observation of the $B$ meson decay $B^{\pm} \to J / ψ η K^{\pm}$ and evidence for the decay $B^{0} \to J / ψ η K_{S}^{0}$ , using {90} million $B B ba r$ events collected at the $\ensuremath…

hep-ex2004★ 12 cited

Semileptonic B Decays at BABAR

Urs Langenegger

We present results on semileptonic B decays obtained with the BABAR detector. The large data set accumulated at the PEP-II asymmetric-energy B-Factory allows a new measurement tech…