Dynamical twisted mass fermions with light quarks
By Philippe Boucaud, P. Dimopoulos, F. Farchioni, R. Frezzotti, V. Gimenez, G. Herdoiza, K. Jansen, V. Lubicz, G. Martinelli, Craig McNeile and 12 more. 2007
163 citations recorded by the source corpus.
We present results of dynamical simulations with 2 flavours of degenerate Wilson twisted mass quarks at maximal twist in the range of pseudo scalar masses from 300 to 550 MeV. The simulations are performed at one value of the lattice spacing a \lesssim 0.1 fm. In order to have O(a) improvement and aiming at small residual 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, \bar{l}_3 and \bar{l}_4 are evaluated with small statistical errors.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/86bcb4edb2eb7617ce70c054cef18b2ff5707109
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Nuclear and High Energy Physics
Citations in the corpus
- Review of lattice results concerning low-energy particle physics (2010, methodology): “rence is an O(a2) discretization effect, whose actual size depends on the specific choice of the lattice regularization (in both the gauge and fermionic part of the action). In the Nf = 2 simulation of [54] it is found 1 − Mπ0/Mπ+ ∼ 0.2 for a∼ 0.09fm. Since the charged pion mass turns out also to be l”
- Light hadrons from lattice QCD with light (u, d), strange and charm dynamical quarks (2010, methodology): “Contrary to the Nf = 2 case [5, 8], where this tuning was performed once at the minimal value of the twisted light mass considered in the simulations, we now perform the tuning at each value of the twisted light quark mass μl and the heavy-doublet quark mass”
- Review of lattice results concerning low-energy particle physics (2016, background): “[83] and [36]), chiral extrapolations are based on chiral perturbation theory formulae which do not take these regularization effects into account.”
- Flavor Physics in the Quark Sector (2009, background): “Other methods for sea quarks are accumulating sufficiently high statistics, so one can anticipate competitive results not only with staggered sea quarks [106], but also with Symanzik-improved Wilson sea quarks [107, 108], twisted-mass Wilson sea quarks [109], domain-wall sea quarks [110], and overla”
- Light meson physics from maximally twisted mass lattice QCD (2009, methodology): “[ 14 ]. For a comparison to other recent lattice results we refer the reader to ref.”