Speaker
Prof.
Gunnar Bali
(Universität Regensburg)
Description
We present results of gluonic and pseudoscalar matrix elements of the $\eta$ and $\eta'$ mesons at the physical quark mass point, in the continuum limit. The simulations are carried out on $n_f=2+1$ CLS ensembles, with non-perturbatively improved Wilson fermions. We discuss the renormalization of these quantities and check the consistency with the singlet and non-singlet axial Ward identities. Our results are well described in terms of Large-$N_c$ ChPT at NLO. We comment on phenomenological applications.
Primary authors
Prof.
Gunnar Bali
(Universität Regensburg)
Sara Collins
(University of Regensburg)
Jakob Simeth
(University of Regensburg)
