Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-perturbatively Renormalized Light Quark Masses with Two Dynamical
  Fermions   We present the results of a partially quenched lattice QCD calculation of
light quark masses with $N_f=2$ degenerate dynamical flavors. Numerical
simulations are carried out using the plaquette gauge action and the Wilson
quark action at $\beta = 5.8$ ($a^{-1} \simeq 3.2\gev$). The spatial extension
of the $24^3 \times 48$ lattice is about 1.5 fm. Configurations have been
generated at four values of the sea quark masses, for which the ratio of
pseudoscalar over vector meson masses is in the range $M_P/M_V \simeq 0.60 \div
0.75$. An important feature of the present study is the use of non-perturbative
renormalization, performed with the $\ri$ method. The effects of dynamical sea
quarks in the determination of light quark masses have been investigated by
performing a quenched calculation on a similar lattice. Our results for the
average up-down and strange quark masses are $m_{ud}^{MS} (2\gev) = 4.3(4)
(^{+1.1}_{-0.4})\mev$ and $m_s^{MS}(2\gev)=101(8)(^{+25}_{-9}) \mev$. These
values are larger than those obtained by evaluating the quark mass
renormalization constants with one-loop (boosted) perturbation theory. Our
results for the light quark masses are compatible with those obtained in the
quenched simulation. No significant sea quark effects are seen, at the values
of sea quark masses used in the present study.

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The categories of this paper are: stat
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
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The categories of this paper are: physics
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
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The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: math
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org