Three neutrons from Lattice QCD
J.L. Wynen*, E. Berkowitz, T. Luu, A. Shindler and J. Bulava
May 29, 2019
We present a study on ab-initio calculations of three-neutron correlators from Lattice QCD. We extend the method of baryon blocks to systems of three spacially displaced baryons. This allows the measurement of three-neutron p-wave correlators with total spin S = 1/2 and 3/2 . In addition, we use automatic code generation that has high flexibility and allows for easy inclusion of additional channels in the future while optimizing the evaluation of contractions. Our measurements were performed on a newly generated $96 \times 48^3$ Clover-Wilson gauge field ensemble with $m_\pi \approx 370$ MeV. We present preliminary results of our calculations of one pion and nucleon as well as two nucleon (2N) and three neutron (3n) correlators.
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