331 citations · 1.1k across the 14 of their papers we have counts for
14 papers
The gamma width in Na and second class currents
S. Triambak, L. Phuthu, A. García +12
A previous measurement of the directional coefficient in Na decay was used to extract recoil-order form factors. The data indicate the requirement of a significant…
The chiral effective pion-nucleon Lagrangian of order p^4
Nadia Fettes, Ulf-G. Meißner, Martin Mojzis +1
We construct the minimal effective chiral pion-nucleon SU(2) Lagrangian at fourth order in the chiral expansion. The Lagrangian contains 118 in principle measurable terms. We devel…
On the size of isospin violation in low-energy pion-nucleon scattering
Nadia Fettes, Ulf-G. Meißner, Sven Steininger
We present an analysis of isospin-breaking effects in threshold pion-nucleon scattering due to the light quark mass difference and the dominant virtual photon effects. We discuss t…
Strange Magnetism
Thomas R. Hemmert, Ulf-G. Meissner, Sven Steininger
We present an analytic and parameter-free expression for the momentum dependence of the strange magnetic form factor of the nucleon and its corresponding radius which has been deri…
Renormalization of the chiral pion-nucleon Lagrangian beyond next-to-leading order
Ulf-G. Meißner, Guido Müller, Sven Steininger
The complete renormalization of the generating functional for Green functions of quark currents between one-nucleon states in two flavor heavy baryon chiral perturbation theory is…
On wave function renormalization and related aspects in heavy fermion effective field theories
Sven Steininger, Ulf-G. Meißner, Nadia Fettes
We reconsider the question of wave function renormalization in heavy fermion effective field theories. In particular, we work out a simple and efficient scheme to define the wave f…
Strange magnetism in the nucleon
T. R. Hemmert, Ulf-G. Meißner, S. Steininger
Using heavy baryon chiral perturbation theory to one loop, we derive an analytic and parameter-free expression for the momentum dependence of the strange magnetic form factor of th…
Pion-nucleon scattering in chiral perturbation theory I: Isospin-symmetric case
Nadia Fettes, Ulf-G. Meißner, Sven Steininger
We construct the complete effective chiral pion-nucleon Lagrangian to third order in small momenta based on relativistic chiral perturbation theory. We then perform the so-called h…
Working group on and N interactions - Summary
Ulf-G. Meißner, Martin Sevior, A. Badertscher +16
This is the summary of the working group on and N interactions of the Chiral Dynamics Workshop in Mainz, September 1-5, 1997. Each talk is represented by an extended one pa…
Isospin violation in pion-nucleon scattering
Ulf-G. Meißner, S. Steininger
We construct the complete effective chiral pion-nucleon Lagrangian in the presence of virtual photons to one loop. As an application, we consider strong and electromagnetic isospin…
Virtual photons in SU(2) chiral perturbation theory and electromagnetic corrections to scattering
Ulf-G. Meißner, G. Müller, S. Steininger
We construct the generating functional of two flavor chiral perturbation theory including the effects of virtual photons in the one loop approximation. As an application, we calcul…
Baryon magnetic moments in chiral perturbation theory
Ulf-G. Meißner, S. Steininger
We consider the chiral expansion of the octet baryon magnetic moments in heavy baryon chiral perturbation theory including all terms which are of order . These terms are forma…
Threshold kaon photo- and electroproduction in SU(3) baryon chiral perturbation theory
Sven Steininger, Ulf-G. Meißner
We calculate the processes in three flavor heavy baryon chiral perturbation theory to one loop. Some low--energy constants are fixed from single b…
Kaon loops in pion photoproduction: Facts and fancy
Sven Steininger, Ulf-G. Meißner
We show that a recent claim of huge kaon loop corrections to the electric dipole amplitude in neutral pion photoprodcution at threshold is incorrect. The difference between the two…