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000587897 005__ 20241208105637.0
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000587897 0247_ $$2arXiv$$aarXiv:2307.13471
000587897 0247_ $$2datacite_doi$$a10.3204/PUBDB-2023-04593
000587897 037__ $$aPUBDB-2023-04593
000587897 041__ $$aEnglish
000587897 088__ $$2arXiv$$aarXiv:2307.13471
000587897 088__ $$2Other$$aMIT-CTP/5580
000587897 1001_ $$0P:(DE-H253)PIP1010758$$aBulava, John$$b0$$udesy
000587897 245__ $$aLattice QCD study of $\pi\Sigma\unicode{x2013}\bar{K}N$ scattering and the $\Lambda(1405)$ resonance
000587897 260__ $$c2023
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000587897 500__ $$a18 pages, 11 figures
000587897 520__ $$aA lattice QCD computation of the coupled channel $\pi\Sigma\unicode{x2013}\bar{K}N$ scattering amplitudes in the $\Lambda(1405)$ region is detailed. Results are obtained using a single ensemble of gauge field configurations with $N_{\rm f} = 2+1$ dynamical quark flavors and $m_{\pi} \approx 200$ MeV and $m_K\approx487$ 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 $\pi\Sigma$ threshold and a resonance pole just below the $\bar{K}N$ threshold.
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000587897 7001_ $$aCid-Mora, Bárbara$$b1
000587897 7001_ $$aHanlon, Andrew D.$$b2
000587897 7001_ $$aHörz, Ben$$b3
000587897 7001_ $$aMohler, Daniel$$b4
000587897 7001_ $$aMorningstar, Colin$$b5
000587897 7001_ $$aMoscoso, Joseph$$b6
000587897 7001_ $$aNicholson, Amy$$b7
000587897 7001_ $$aRomero-López, Fernando$$b8
000587897 7001_ $$aSkinner, Sarah$$b9
000587897 7001_ $$aWalker-Loud, André$$b10
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000587897 9141_ $$y2023
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