Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass Spectra of Pentaquarks -- Overlap versus Wilson Fermions   We investigate the mass spectra of $\Theta^+(udud\bar s)$ in quenched lattice
QCD, with overlap and Wilson fermions respectively. Using three different
interpolating operators, we measure their correlation matrix, and extract the
mass spectra in even and odd parity channels, for 100 gauge configurations
generated with single plaquette action at $\beta=6.1$ on the $20^3 \times 40$
lattice. The lowest $ 1/2^- $ state agrees with the $ KN $ s-wave scattering
state, for both fermion schemes. On the other hand, for the lowest $ 1/2^+ $
state, it is different from any hadron scattering states for the overlap
fermion, while it seems to agree with $ KN^* $ s-wave for the Wilson fermion.

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The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: chao-dyn
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The categories of this paper are: supr-con
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The categories of this paper are: astro-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: physics
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The categories of this paper are: math
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The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: nlin
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: hep-th