3 papers
hep-ph2020
A Dyson-Schwinger model beyond isospin limit prepared for investigating U_A(1)-breaking temperature dependence
Davor Horvatić, Dalibor Kekez, Dubravko Klabučar
Motivated by our earlier findings of sensitive quark-flavor dependence of QCD topological susceptibility on products of current quark masses and corresponding condensates, we allow…
hep-ph2019
T-dependence of the axion mass when the U_A(1) and chiral symmetry breaking are tied
Dubravko Klabučar, Davor Horvatić, Dalibor Kekez
Modulo the scale of spontaneous breaking of Peccei-Quinn symmetry, the axion mass is given by the QCD topological susceptibility at all temperatures . From an ap…
hep-ph2018
and mesons at high T when the U_A(1) and chiral symmetry breaking are tied
Davor Horvatić, Dalibor Kekez, Dubravko Klabučar
The approach to the eta'-eta complex employing chirally well-behaved quark-antiquark bound states and incorporating the non-Abelian axial anomaly of QCD through the generalization…