I=2 Pion scattering length with improved actions on anisotropic lattices

Abstract

$\pi \pi$ scattering length in the I=2 channel is calculated within quenched approximation using improved gauge and improved Wilson fermion actions on anisotropic lattices. The results are extrapolated towards the chiral, infinite volume and continuum limit. This result improves our previous result on the scattering length. In the chiral, infinite volume and continuum limit, we obtain $a_0^{(2)}{m}_{\pi }=-0.0467(45)$, which is consistent with the result from Chiral Perturbation Theory, the experiment and results from other lattice calculations.

arXiv comment7 pages, 2 figures, typeset wit elsart.cls

References in corpus (3)

• ππscattering
• Calculating the I=2 Pion Scattering Length Using Tadpole Improved Clover Wilson Action on Coarse Anisotropic Lattices
• Scalar and Tensor Glueballs on Asymmetric Coarse Lattices

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