TY  - JOUR
AU  - Bulava, John
AU  - Cid-Mora, Bárbara
AU  - Hanlon, Andrew D.
AU  - Hörz, Ben
AU  - Mohler, Daniel
AU  - Morningstar, Colin
AU  - Moscoso, Joseph
AU  - Nicholson, Amy
AU  - Romero-López, Fernando
AU  - Skinner, Sarah
AU  - Walker-Loud, André
TI  - Lattice QCD study of πΣ − ―KN scattering and the Λ(1405) resonance
JO  - Physical review / D
VL  - 109
IS  - 1
SN  - 2470-0010
CY  - Ridge, NY
PB  - American Physical Society
M1  - GSI-2024-01149
SP  - 014511
PY  - 2024
N1  - Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
AB  - A lattice QCD computation of the coupled channel πΣ–K¯N scattering amplitudes in the Λ(1405) region is detailed. Results are obtained using a single ensemble of gauge field configurations with Nf=2+1 dynamical quark flavors and mπ≈200  MeV and mK≈487  MeV. Hermitian correlation matrices using both single baryon and meson-baryon interpolating operators for a variety of different total momenta and irreducible representations are used. Several parametrizations of the two-channel scattering K-matrix are utilized to obtain the scattering amplitudes from the finite-volume spectrum. The amplitudes, continued to the complex energy plane, exhibit a virtual bound state below the πΣ threshold and a resonance pole just below the K¯N threshold.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001172676100003
DO  - DOI:10.1103/PhysRevD.109.014511
UR  - https://repository.gsi.de/record/354670
ER  -