Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semileptonic B Decays from an NRQCD/D234 Action   Semileptonic, B --> pi, l nubar, decays are studied on quenched anisotropic
lattices using tree-level tadpole improved Symanzik glue, NRQCD heavy quark and
D234 light quark actions. Constrained fitting methods are applied to extract
groundstate contributions to two-point and three-point correlators. We agree
with previous lattice determinations of the form factors. The major source of
systematic error here, as in previous work, comes from the chiral extrapolation
to the physical pion mass. Future calculations must work at lighter quark
masses to resolve this.

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The categories of this paper are: nlin
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: physics
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The categories of this paper are: alg-geom
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The categories of this paper are: ao-sci
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The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: math
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The categories of this paper are: cmp-lg
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The categories of this paper are: atom-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ex