Close interaction between theory and experiment has led to the success of the Standard Model of particle physics, which has now entered the precision frontier in the search for New Physics. The anomalous magnetic moment of the muon is a prominent example for which the interpretation of experimental results requires a precise theoretical understanding of hadronic contributions governed by the theory of the strong interaction, Quantum Chromodynamics (QCD). To calculate these and many other quantities in lattice QCD with systematically improvable uncertainties, high quality ensembles of gauge configurations at multiple lattice resolutions and volumes are required.
In this project, we aim to continue our work on Meluxina towards an improved control of systematic errors in various quantities studied by the Extended Twisted Mass Collaboration through the continued generation of an ensemble of gauge configurations at a coarse lattice spacing using dynamical Wilson clover twisted mass quarks with their mass parameters tuned to reproduce the physical hadron spectrum with an accuracy of around one percent.
This will enable an improved continuum limit directly at the physical point and serve as a basis for future very large volume simulations.
University of Bonn, Germany;
University of Wuppertal, Germany.