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Pion-nucleon scattering in the Roper channel from lattice QCD

Lang, C. B., Leskovec, L., Padmanath, M. and Prelovsek, S. (2017) Pion-nucleon scattering in the Roper channel from lattice QCD. Physical Review D 95 (1).

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Other URL: http://doi.org/10.1103/PhysRevD.95.014510


Abstract

We present a lattice QCD study of N pi scattering in the positive-parity nucleon channel, where the puzzling Roper resonance N*(1440) resides in experiment. The study is based on the PACS-CS ensemble of gauge configurations with N-f = 2 + 1 Wilson-clover dynamical fermions, m pi similar or equal to 156 MeV and L similar or equal to 2.9 fm. In addition to a number of qqq interpolating fields, we ...

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Item type:Article
Date:2017
Institutions:Physics > Institute of Theroretical Physics
Identification Number:
ValueType
10.1103/PhysRevD.95.014510DOI
Keywords:FINITE-VOLUME; QUARK-MODEL; RESONANCE; BARYONS; ELECTROPRODUCTION; MATRIX;
Dewey Decimal Classification:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Item ID:38792
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