204 citations · 1.6k across the 41 of their papers we have counts for
6 papers · 1 filter
Towards the P-wave nucleon-pion scattering amplitude in the channel
Srijit Paul, Giorgio Silvi, Constantia Alexandrou +9
We use lattice QCD and the Lüscher method to study elastic pion-nucleon scattering in the isospin channel, which couples to the resonance. Our flavor…
Calculating the radiative decay width with lattice QCD
Luka Leskovec, Constantia Alexandrou, Stefan Meinel +6
We present the results of our lattice QCD study of the process, where the resonance appears as an enhancement in the transition amplitude. We use clover fer…
scattering and the resonance in 2+1 flavor QCD
Gumaro Rendon, Luka Leskovec, Stefan Meinel +6
In this project, we will compute the form factors relevant for decays. To map the finite-volume matrix elements computed on the lattice to the infi…
A Lattice QCD study of the resonance
Luka Leskovec, Constantia Alexandrou, Stefan Meinel +6
We present a lattice QCD study of the resonance with clover fermions at a pion mass of approximately MeV and lattice size fm. We consider two processes in…
A lattice QCD study of pion-nucleon scattering in the Roper channel
Luka Leskovec, Christian B. Lang, M. Padmanath +1
We present a lattice QCD study of the puzzling positive-parity nucleon channel, where the Roper resonance resides in experiment. The study is based on an ensemble of ga…
The transition and the radiative decay width from lattice QCD
Constantia Alexandrou, Luka Leskovec, Stefan Meinel +6
We report a lattice QCD determination of the transition amplitude for the -wave, two-pion final state, as a function of the photon virtuality and invariant…