H. Koch

activity

20002023

most citedObservation of a Broad Structure in the

π^{+} π^{-} J / ψ

Mass Spectrum around 4.26 GeV/

c^{2}

744 citations · 7.4k across the 140 of their papers we have counts for

collaborators

141 papers

hep-ex2023★ 11 cited

Search for $B$ Mesogenesis at BABAR

BABAR Collaboration, J. P. Lees, V. Poireau +239

A new mechanism has been proposed to simultaneously explain the presence of dark matter and the matter-antimatter asymmetry in the universe. This scenario predicts exotic $B$ meson…

hep-ex2021

Search for an Axion-Like Particle in B Meson Decays

The BABAR Collaboration

Axion-like particles (ALPs) are predicted in many extensions of the Standard Model, and their masses can naturally be well below the electroweak scale. In the presence of couplings…

hep-ex2021★ 1 cited

Search for Lepton Flavor Violation in $Υ (3 S) \to e^{\pm} μ^{\mp}$

BABAR Collaboration

We report on the first search for electron-muon lepton flavor violation (LFV) in the decay of a $b$ ~quark and $b$ ~antiquark bound state. We look for the LFV decay $Υ(3S)\rightarrow…

hep-ex2021★ 4 cited

Search for Darkonium in $e^{+} e^{-}$ Collisions

The BABAR Collaboration

Collider searches for dark sectors, new particles interacting only feebly with ordinary matter, have largely focused on identifying signatures of new mediators, leaving much of dar…

hep-ex2021★ 40 cited

Light meson spectroscopy from Dalitz plot analyses of $η_{c}$ decays to $η^{'} K^{+} K^{-}$ , $η^{'} π^{+} π^{-}$ , and $η π^{+} π^{-}$ produced in two-photon interactions

J. P. Lees

We study the processes $γ γ \to η_{c} \to η^{'} K^{+} K^{-}$ , $η^{'} π^{+} π^{-}$ , and $η π^{+} π^{-}$ using a data sample of 519 $f b^{- 1}$ recorded with the BaBar detector operating at the SLAC PEP-II a…

hep-ex2021★ 5 cited

Study of the reactions $e^{+} e^{-} \to 2 (π^{+} π^{-}) π^{0} π^{0} π^{0}$ and $e^{+} e^{-} \to 2 (π^{+} π^{-}) π^{0} π^{0} η$ at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation

The BABAR Collaboration

We study the processes $e^{+} e^{-} \to 2 (π^{+} π^{-}) π^{0} π^{0} π^{0} γ$ and $2 (π^{+} π^{-}) π^{0} π^{0} η γ$ in which an energetic photon is radiated from the initial state. The data were collected with the \ba…

Search for B Mesogenesis at BABAR

Search for an Axion-Like Particle in B Meson Decays

Search for Lepton Flavor Violation in Υ(3S)→e±μ∓

Search for Darkonium in e+e− Collisions

Light meson spectroscopy from Dalitz plot analyses of ηc​ decays to η′K+K−, η′π+π−, and ηπ+π− produced in two-photon interactions

Study of the reactions e+e−→2(π+π−)π0π0π0 and e+e−→2(π+π−)π0π0η at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation

Search for $B$ Mesogenesis at BABAR

Search for Lepton Flavor Violation in $Υ (3 S) \to e^{\pm} μ^{\mp}$

Search for Darkonium in $e^{+} e^{-}$ Collisions

Light meson spectroscopy from Dalitz plot analyses of $η_{c}$ decays to $η^{'} K^{+} K^{-}$ , $η^{'} π^{+} π^{-}$ , and $η π^{+} π^{-}$ produced in two-photon interactions

Study of the reactions $e^{+} e^{-} \to 2 (π^{+} π^{-}) π^{0} π^{0} π^{0}$ and $e^{+} e^{-} \to 2 (π^{+} π^{-}) π^{0} π^{0} η$ at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation