I=2 Pion Scattering Length from Two-Pion Wave Function

Details I=2 Pion Scattering Length from Two-Pion Wave Function I=2 Pion Scattering Length from Two-Pion Wave Function

2003-09-26

arxiv.org/abs/hep-lat/0309168v1

Physics

High Energy Physics

High Energy Physics - Lattice

Lattice2003(spectrum). 3 pages, 4 figures

Scientific paper

10.1016/S0920-5632(03)02540-4

We present a preliminary report on a calculation of scattering length for I=2 $S$-wave two-pion system directly from the two-pion wave function. Results are compared with those calculated from the time dependence of two-pion four-point functions. Calculations are made with an RG-improved action for gluons and improved Wilson action for quarks at $a^{-1}=1.207(12)$ GeV on $20^3 \times 48$ and $24^3 \times 48$ lattices.

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