Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scattering length from BS wave function inside the interaction range   We evaluate $I=2$ two-pion scattering length through the scattering amplitude
obtained by the Bethe-Salpeter wave function inside the interaction range. The
scattering length is computed with $m_\pi = 0.52-0.86$ GeV in the quenched
lattice QCD. Furthermore, the half-off-shell amplitude is calculated, from
which the effective range is extracted. Our results are compared with those by
the conventional finite size method and by chiral perturbation theory to
confirm consistency.

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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: math-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: supr-con
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The categories of this paper are: cmp-lg