کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1835223 | 1526777 | 2015 | 25 صفحه PDF | دانلود رایگان |
We review simulations of lattice of QCD with chiral invariant overlap fermions and chirally improved maximally twisted mass fermions. We discuss simulations with twisted mass fermions for Nf=2 flavours of mass degenerate quarks and for the situation of Nf=2+1+1 flavours, where the strange and the charm quarks are taken into account as active degrees of freedom. Results are presented for a number of physical quantities among which are the muon anomalous magnetic moment, pseudo scalar masses and decay constants, quark masses, the pion scattering length and the ρ-meson resonance. In addition, we discuss aspects of the simulations themselves and the non-perturbative renormalization that has been performed. Finally, first result are given for simulations directly at the physical value of the pion mass.
Journal: Nuclear and Particle Physics Proceedings - Volumes 261–262, April–May 2015, Pages 58-82