TY  - EJOUR
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\unicodex2013―KN scattering and the Λ(1405) resonance
IS  - arXiv:2307.13471
M1  - PUBDB-2023-04593
M1  - arXiv:2307.13471
M1  - MIT-CTP/5580
PY  - 2023
N1  - 18 pages, 11 figures
AB  - A lattice QCD computation of the coupled channel πΣ\unicodex2013―KN scattering amplitudes in the Λ(1405) region is detailed. Results are obtained using a single ensemble of gauge field configurations with N<sub>f</sub> = 2+1 dynamical quark flavors and m<sub>π</sub>  ≈ 200 MeV and m<sub>K</sub> ≈ 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 ―KN threshold.
KW  - resonance, pole (INSPIRE)
KW  - quark, flavor (INSPIRE)
KW  - lattice field theory (INSPIRE)
KW  - Lambda(1405) (INSPIRE)
KW  - scattering amplitude (INSPIRE)
KW  - scattering (INSPIRE)
KW  - baryon (INSPIRE)
KW  - correlation (INSPIRE)
KW  - parametrization (INSPIRE)
KW  - gauge field theory (INSPIRE)
KW  - meson baryon (INSPIRE)
KW  - bound state (INSPIRE)
KW  - coupled channel (INSPIRE)
KW  - finite size (INSPIRE)
LB  - PUB:(DE-HGF)25
DO  - DOI:10.3204/PUBDB-2023-04593
UR  - https://bib-pubdb1.desy.de/record/587897
ER  -