$I=1$ $\pi$-$\pi$ scattering at the physical point

Andrew D. Hanlon; Ben H\"orz; Colin Morningstar; Daniel Mohler; Hartmut Wittig; Srijit Paul

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arxiv 2112.07385 v1 pith:BY4SNXK4 submitted 2021-12-14 hep-lat

I=1 π-π scattering at the physical point

Srijit Paul , Andrew D. Hanlon , Ben H\"orz , Daniel Mohler , Colin Morningstar , Hartmut Wittig This is my paper

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keywords scatteringanalysisphasephysicalpointagreementbasiscompute

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We present a preliminary analysis of $I=1$ $\pi\,\pi$ scattering at the physical point. We make use of the stochastic variant of the distillation framework (also known as sLapH) to compute the relevant two-point correlation matrices using a basis of single and multihadron interpolating operators to estimate the low energy spectra. We perform the L\"uscher analysis to determine the scattering phase shift which is finding good agreement with the experimentally obtained phase shifts.

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