Europhys. Lett.
Volume 66, Number 5, June 2004
Page(s) 652 - 656
Section The physics of elementary particles and fields
Published online 01 May 2004
Europhys. Lett., 66 (5) , pp. 652-656 (2004)
DOI: 10.1209/epl/i2003-10251-7

Chiral perturbation theory for lattice QCD with a twisted mass term

G. Münster and C. Schmidt

Institut für Theoretische Physik, Universität Münster Wilhelm-Klemm-Str. 9, D-48149 Münster, Germany

(Received 25 November 2003; accepted in final form 31 March 2004)

Quantum chromodynamics on a lattice with Wilson fermions and a chirally twisted mass term for two degenerate quark flavours is considered in the framework of chiral perturbation theory. The pion mass and decay constant are calculated in next-to-leading order including terms linear in the lattice spacing a.

11.15.Ha - Lattice gauge theory.
12.38.Gc - Lattice QCD calculations.
12.39.Fe - Chiral Lagrangians.

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