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dc.contributor.authorBoucaud, Ph.en_US
dc.contributor.authorDimopoulos, P.en_US
dc.contributor.authorFarchioni, F.en_US
dc.contributor.authorFrezzotti, R.en_US
dc.contributor.authorGiménez Gómez, Vicenteen_US
dc.contributor.authorHerdoiza, Gregorioen_US
dc.contributor.authorJansen, K.en_US
dc.contributor.authorLubicz, V.en_US
dc.contributor.authorMartinelli, G.en_US
dc.contributor.authorMcNeile, C.en_US
dc.contributor.authorMichael, C.en_US
dc.contributor.authorMontvay, I.en_US
dc.contributor.authorPalao, Daviden_US
dc.contributor.authorPapinutto, M.en_US
dc.contributor.authorPickavance, J.en_US
dc.contributor.authorRossi, G. C.en_US
dc.contributor.authorScorzato, L.en_US
dc.contributor.authorShindler, Andreaen_US
dc.contributor.authorSimula, S.en_US
dc.contributor.authorUrbach, C.en_US
dc.contributor.authorWenger, U.en_US
dc.identifier.citationPhysics Letters B 650(4): 304-311 (2007)en_US
dc.description8 pages, 3 figures.-- ISI Article Identifier: 000248138100016.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-lat/0701012en_US
dc.descriptionPrinted version published Jul 5, 2007.-
dc.description.abstractWe present results of dynamical simulations of N-f = 2 degenerate Wilson twisted mass quarks at maximal twist in the range of pseudo scalar masses 300 MeV less than or similar to m(PS) less than or similar to 550 MeV. Reaching such small masses was made possible owing to a recently developed variant of the HMC algorithm. The simulations are performed at one value of the lattice spacing a less than or similar to 0.1 fm. In order to have O(a) improvement and aiming at small residual O(a^2) cutoff effects, the theory is tuned to maximal twist by requiring the vanishing of the untwisted quark mass. Precise results for the pseudo scalar decay constant and the pseudo scalar mass are confronted with chiral perturbation theory predictions and the low energy constants F, (l)[overline](3) and (l)[overline](4) are evaluated with small statistical errors.en_US
dc.description.sponsorshipThis work has been supported in part by the DFG Sonderforschungsbereich/Transregio SFB/TR9-03 and the EU Integrated Infrastructure Initiative Hadron Physics (I3HP) under contract RII3-CT-2004-506078. We also thank the DEISA Consortium (co-funded by the EU, FP6 project 508830), for support within the DEISA Extreme Computing Initiative (www.deisa.org). G.C.R. and R.F. thank MIUR (Italy) for partial financial support under the contract PRIN04. V.G. and D.P. thank MEC (Spain) for partial financial support under grant FPA2005-00711.-
dc.format.extent2373 bytes-
dc.subjectChiral perturbation theoryen_US
dc.subjectMonte Carlo algorithmen_US
dc.subjectGross-Neveu modelen_US
dc.subjectYang-Mills theoryen_US
dc.subjectLattice QCDen_US
dc.subjectWilson quarksen_US
dc.subjectHMC algorithmen_US
dc.subjectGauge actionsen_US
dc.subjectEuropean Twisted Mass (ETM) Collaboration-
dc.titleDynamical twisted mass fermions with light quarksen_US
dc.description.peerreviewedPeer revieweden_US
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