# Simulating twisted mass fermions at physical light, strange and charm quark masses

@article{Alexandrou2018SimulatingTM, title={Simulating twisted mass fermions at physical light, strange and charm quark masses}, author={Constantia Alexandrou and Simone Bacchio and Panagiotis Charalambous and Petros Dimopoulos and Jacob Finkenrath and R. Frezzotti and K. Hadjiyiannakou and Karl Jansen and Giannis Koutsou and Bartosz Kostrzewa and Mariane Mangin-Brinet and G. C. Rossi and S. Simula and Carsten Urbach}, journal={Physical Review D}, year={2018}, volume={98}, pages={054518} }

We present the QCD simulation of the first gauge ensemble of two degenerate light quarks, a strange and a charm quark with all quark masses tuned to their physical values within the twisted mass fermion formulation. Results for the pseudoscalar masses and decay constants confirm that the produced ensemble is indeed at the physical parameters of the theory. This conclusion is corroborated by a complementary analysis in the baryon sector. We examine cutoff and isospin breaking effects and… Expand

#### Figures and Tables from this paper

#### 33 Citations

QCD transition at the physical point, and its scaling window from twisted mass Wilson fermions

- Physics
- 2021

We study the scaling properties of the finite temperature QCD phase transition, for light quark masses ranging from the heavy quark regime to their physical values. The lattice results are obtained… Expand

Nucleon form factors from Nf=2+1+1 twisted mass fermions at the physical point

- Physics
- Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018)
- 2019

In this proceedings we present results on the nucleon electromagnetic and axial form factors of both the connected and disconnected light and strange quarks contributions. The simulations are… Expand

Flavor decomposition of the nucleon unpolarized, helicity and transversity parton distribution functions from lattice QCD simulations

- Physics
- 2021

We present results on the quark unpolarized, helicity and transversity parton distributions functions of the nucleon. We use the quasi-parton distribution approach within the lattice QCD framework… Expand

Moments of nucleon generalized parton distributions from lattice QCD simulations at physical pion mass

- Physics
- 2020

We present results for the moments of nucleon isovector vector and axial generalised parton distribution functions computed within lattice QCD. Three ensembles of maximally twisted mass… Expand

Light-quark contribution to the leading hadronic vacuum polarization term of the muon g−2 from twisted-mass fermions

- Physics
- 2018

We present a lattice calculation of the leading Hadronic Vacuum Polarization (HVP) contribution of the light u- and d-quarks to the anomalous magnetic moment of the muon, $a_\mu^{\rm HVP}(ud)$,… Expand

Topological susceptibility and
η′
meson mass from
Nf=2
lattice QCD at the physical point

- Physics
- Physical Review D
- 2019

In this paper we explore the computation of topological susceptibility and η' meson mass in Nf = 2 flavor QCD using lattice techniques with a physical value of the pion mass as well as larger pion… Expand

Electromagnetic and strong isospin-breaking corrections to the muon
g−2
from lattice
QCD+QED

- Physics
- Physical Review D
- 2019

We present a lattice calculation of the leading-order electromagnetic and strong isospin-breaking corrections to the hadronic vacuum polarization (HVP) contribution to the anomalous magnetic moment… Expand

Proton and neutron electromagnetic form factors from lattice QCD

- Physics
- Physical Review D
- 2019

The electromagnetic form factors of the proton and the neutron are computed within lattice QCD using simulations with quarks masses fixed to their physical values. Both connected and disconnected… Expand

Nucleon strange electromagnetic form factors

- Physics
- 2020

The role of the strange quarks on the low-energy interactions of the proton can be probed through the strange electromagnetic form factors. Knowledge of these form factors provides essential input… Expand

Quasi-PDFs from Twisted mass fermions at the physical point

- Physics
- Proceedings of The 36th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2018)
- 2019

We present results for the flavor non-singlet u-d parton distribution functions within the nucleon using the quasi-PDF approach. The lattice calculation is performed by employing the twisted mass… Expand

#### References

SHOWING 1-10 OF 100 REFERENCES

Quenched scaling of Wilson twisted mass fermions

- Physics
- 2005

We investigate the scaling behaviour of quenched Wilson twisted mass fermions at maximal twist applying two definitions of the critical mass. The first definition uses the vanishing of the… Expand

Twisted-mass lattice QCD with mass non-degenerate quarks

- Physics
- 2004

The maximally twisted lattice QCD action of an SUf(2) doublet of mass degenerate Wilson quarks gives raise to a real positive fermion determinant and it is invariant under the product of standard… Expand

Lattice QCD with a chirally twisted mass term

- Physics
- 2000

Lattice QCD with Wilson quarks and a chirally twisted mass term represents a promising alternative regularization of QCD, which does not suffer from unphysical fermion zero modes. We show how the… Expand

Numerical simulations with two flavours of twisted-mass Wilson quarks and DBW2 gauge action

- Physics
- 2006

Abstract Discretisation errors in two-flavour lattice QCD with Wilson quarks and DBW2 gauge action are investigated by comparing numerical simulation data at two values of the bare gauge coupling.… Expand

The η′ meson at the physical point with N f = 2 Wilson twisted mass fermions

- Physics
- 2018

We present results for the η′ meson and the topological susceptibility in Nf = 2 flavour lattice QCD. The results are obtained using Wilson twisted mass fermions at maximal twist with pion masses… Expand

Numerical simulation of QCD with u, d, s and c quarks in the twisted-mass Wilson formulation

- Physics
- 2007

A first study of numerical Monte Carlo simulations with two quark doublets, a mass-degenerate one and a mass-split one, interpreted as u, d, s and c quarks, is carried out in the framework of the… Expand

Up, down, strange and charm quark masses with Nf=2+1+1 twisted mass lattice QCD

- Physics
- 2014

Abstract We present a lattice QCD calculation of the up, down, strange and charm quark masses performed using the gauge configurations produced by the European Twisted Mass Collaboration with N f = 2… Expand

Dynamical twisted mass fermions with light quarks: simulation and analysis details

- Computer Science, Physics
- Comput. Phys. Commun.
- 2008

The problem of tuning to maximal twist, the techniques the authors have used to compute correlators and error estimates, and the evaluation of disconnected contributions and the description of the data by means of chiral perturbation theory formulae are discussed. Expand

Chirally improving Wilson fermions 2. Four-quark operators

- Physics
- 2004

In this paper we discuss how the peculiar properties of twisted mass lattice QCD at maximal twist can be employed to set up a consistent computational scheme in which, despite the explicit breaking… Expand

First physics results at the physical pion mass from $N_f=2$ Wilson twisted mass fermions at maximal twist

- Physics
- 2017

We present physics results from simulations of QCD using Nf 1⁄4 2 dynamical Wilson twisted mass fermions at the physical value of the pion mass. These simulations are enabled by the addition of the… Expand