Add to ORKGThe finite-volume energy levels corresponding to the Roper resonance based on a two-flavor chiral effective Lagrangian at leading one-loop order are investigated. It is shown that the Roper mass can be extracted from these levels for not too large lattice volumes. Further, to include three-body $N \pi \pi$ dynamics, a non-relativistic effective field theory for the Roper resonance within a covariant particle-dimer picture is introduced. This particle-dimer approach is a suitable framework to investigate three-particle scattering relevant for the Roper channel. The appearing dimer fields are analyzed, the energy levels of the Roper resonance in a finite volume are calculated and compared to the results from the chiral effective Lagrangian.Co...
Most strong-interaction resonances have decay channels involving three or more particles, including ...
A comprehensive study of the positive and negative parity, isospin = ½, spin = ½ energy eigenstates ...
We derive the three-body quantization condition in a finite volume using an effective field theory i...
AbstractWe calculate the width of the Roper resonance at next-to-leading order in a systematic expan...
In this work, we use an extension of the quantization condition, given in ref. [1], to numerically e...
In view of the recent results of lattice QCD simulation in the P11 partial wave that has found no cl...
Published 29 May 2018Two different effective field theory descriptions of the pion-nucleon scatterin...
In this talk, we present the first chiral extrapolation of a resonant scattering amplitude obtained ...
Recent calculations of the pion-nucleon scattering in covariant baryon chiral perturbation theory wi...
peer reviewedWithin a semi-relativistic constituent quark model based on linear confinement, we prop...
Working in relativistic quantum field theory, we derive the quantization condition satisfied by coup...
cf. https://arxiv.org/abs/1806.02363We present a lattice QCD study of the puzzling positive-parity n...
In this work, we use an extension of the quantization condition, given in ref. [1], to numerically e...
We discuss unitarity constraints on the dynamics of a system of three interacting particles. We show...
We develop a scheme for the extraction of the properties of the scalar mesons f0(600), f0(980), and ...
Most strong-interaction resonances have decay channels involving three or more particles, including ...
A comprehensive study of the positive and negative parity, isospin = ½, spin = ½ energy eigenstates ...
We derive the three-body quantization condition in a finite volume using an effective field theory i...
AbstractWe calculate the width of the Roper resonance at next-to-leading order in a systematic expan...
In this work, we use an extension of the quantization condition, given in ref. [1], to numerically e...
In view of the recent results of lattice QCD simulation in the P11 partial wave that has found no cl...
Published 29 May 2018Two different effective field theory descriptions of the pion-nucleon scatterin...
In this talk, we present the first chiral extrapolation of a resonant scattering amplitude obtained ...
Recent calculations of the pion-nucleon scattering in covariant baryon chiral perturbation theory wi...
peer reviewedWithin a semi-relativistic constituent quark model based on linear confinement, we prop...
Working in relativistic quantum field theory, we derive the quantization condition satisfied by coup...
cf. https://arxiv.org/abs/1806.02363We present a lattice QCD study of the puzzling positive-parity n...
In this work, we use an extension of the quantization condition, given in ref. [1], to numerically e...
We discuss unitarity constraints on the dynamics of a system of three interacting particles. We show...
We develop a scheme for the extraction of the properties of the scalar mesons f0(600), f0(980), and ...
Most strong-interaction resonances have decay channels involving three or more particles, including ...
A comprehensive study of the positive and negative parity, isospin = ½, spin = ½ energy eigenstates ...
We derive the three-body quantization condition in a finite volume using an effective field theory i...