1.4k citations · 2.7k across the 41 of their papers we have counts for
12 papers · 1 filter
Meson-baryon scattering in resummed baryon chiral perturbation theory using time-ordered perturbation theory
X. -L. Ren, E. Epelbaum, J. Gegelia +1
Integral equations for meson-baryon scattering amplitudes are obtained by utilizing time-ordered perturbation theory for a manifestly Lorentz-invariant formulation of baryon chiral…
Hadronic molecules
Feng-Kun Guo, Christoph Hanhart, Ulf-G. Meißner +3
A large number of experimental discoveries especially in the heavy quarkonium sector that did not at all fit to the expectations of the until then very successful quark model led t…
Primakoff effect in eta-photoproduction off protons
A. Sibirtsev, J. Haidenbauer, S. Krewald +1
We analyse data on forward eta-meson photoproduction off a proton target and extract the eta to gamma gamma decay width utilizing the Primakoff effect. The hadronic amplitude that…
Backward pion photoproduction
A. Sibirtsev, J. Haidenbauer, F. Huang +2
We present a systematic analysis of backward pion photoproduction for the reactions gamma p -> pi0 p and gamma p -> pi+ n. Regge phenomenology is applied at invariant collision ene…
Pion-nucleon charge-exchange amplitudes above 2 GeV
F. Huang, A. Sibirtsev, S. Krewald +3
The amplitudes for the pion-nucleon charge exchange reaction of the Karlsruhe-Helsinki and the George-Washington-University partial wave analyses are compared with those of a Regge…
Near threshold ppbar enhancement in the J/psi -> omega ppbar decay
J. Haidenbauer, Ulf-G. Meißner, A. Sibirtsev
The near-threshold behavior of the ppbar invariant mass spectrum from the J/psi -> omega ppbar decay reported recently by the BES Collaboration is analyzed. Contrary to the stateme…