We report on our simulations with Neuberger valence fermions on CLS Nf=2 configurations with non-perturbatively O(a)-improved Wilson sea quarks. We consider the matching of QCD to ChPT in the so called mixed-regime in which the sea quarks are in the p-regime while the valence quarks are in the ϵ-regime. From this matching, we can get information on Σ, L6 and the combination L8+2L6+2L7.
@article{arxiv.1011.3939,
title = {Exploring the chiral regime of $N_f=2$ QCD with mixed actions},
author = {Fabio Bernardoni and Nicolas Garron and Pilar Hernandez and Silvia Necco and Carlos Pena},
journal= {arXiv preprint arXiv:1011.3939},
year = {2010}
}