TY  - JOUR
AU  - Bulava, J.
AU  - Della Morte, M.
AU  - Heitger, J.
AU  - Wittemeier, C.
PY  - 2016
DA  - 2016//
TI  - Nonperturbative renormalization of the axial current in N-f=3 lattice QCD with Wilson fermions and a tree-level improved gauge action
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 114513
EP  - 7pp
VL  - 93
IS  - 11
PB  - Amer Physical Soc
AB  - We nonperturbatively determine the renormalization factor of the axial vector current in lattice QCD with N-f = 3 flavors of Wilson-clover fermions and the tree-level Symanzik-improved gauge action. The (by now standard) renormalization condition is derived from the massive axial Ward identity, and it is imposed among Schrodinger functional states with large overlap on the lowest lying hadronic state in the pseudoscalar channel, in order to reduce kinematically enhanced cutoff effects. We explore a range of couplings relevant for simulations at lattice spacings of approximate to 0.09 fm and below. An interpolation formula for Z(A)(g(0)(2)) , smoothly connecting the nonperturbative values to the 1-loop expression, is provided together with our final results.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1604.05827
UR  - https://doi.org/10.1103/PhysRevD.93.114513
DO  - 10.1103/PhysRevD.93.114513
LA  - English
N1  - WOS:000378203800011
ID  - Bulava_etal2016
ER  -