Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lattice QCD with two light Wilson quarks and maximally twisted mass   We summarise status and recent results of the European Twisted Mass
collaboration (ETMC). The collaboration has generated gauge configurations for
three different values of the lattice spacing smaller or equal 0.1 fm and
values of the charged pseudo scalar mass as low as 300 MeV with two flavours of
maximally twisted mass quarks. We provide evidence that O(a) improvement works
very well with maximally twisted mass fermions and that also higher order
lattice artifacts appear to be small. The currently only quantity in the light
meson and baryon sector where cut-off effects are visible is the neutral pseudo
scalar meson mass and we present an attempt to understand this from a
theoretical point of view.
  We describe finite size effects and quark mass dependence of the mass and
decay constant of the (charged) pseudo scalar meson with chiral perturbation
theory formulae and our current estimate for the low energy constants l_{3,4}
is l_3=3.44(8)(35) and l_4=4.61(4)(11). Results for the average up-down, the
strange and the charm quark mass and the chiral condensate are also presented.

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The categories of this paper are: math
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph