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arXiv · 1511.02262

Two-nucleon scattering in multiple partial waves

Amy Nicholson·Evan Berkowitz·Enrico Rinaldi·Pavlos Vranas·Thorsten Kurth·Balint Joo·Mark Strother·Andre Walker-Loud
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Abstract

We determine scattering phase shifts for S,P,D, and F partial wave channels in two-nucleon systems using lattice QCD methods. We use a generalization of Luscher's finite volume method to determine infinite volume phase shifts from a set of finite volume ground- and excited-state energy levels on two volumes, V=(3.4 fm)^3 and V=(4.5 fm)^3. The calculations are performed in the SU(3)-flavor limit, corresponding to a pion mass of approximately 800 MeV. From the energy dependence of the phase shifts we are able to extract scattering parameters corresponding to an effective range expansion.

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Amy Nicholson, Evan Berkowitz, Enrico Rinaldi, Pavlos Vranas, Thorsten Kurth, Balint Joo, Mark Strother, Andre Walker-Loud. 2015-11-06. Two-nucleon scattering in multiple partial waves. https://arxiv.org/abs/1511.02262

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