We report our calculation of the pion decay constant fπ, the axial renormalization constant ZA, and the quenched chiral logarithms from the overlap fermions. The calculation is done on a quenched 204 lattice at a = 0.148 fm using tree level tadpole improved gauge action. The smallest pion mass we reach is about 280 MeV. The lattice size is about 4 times the Compton wavelength of the lowest mass pion.
|Number of pages||3|
|Journal||Nuclear Physics B - Proceedings Supplements|
|State||Published - Mar 2002|
Bibliographical noteFunding Information:
extends to a fairly long distance in the time separation. We obtain the axial renormalization constant, ZA = 0.1589(4), being fairly independent of moa. The renormalized f~ gives a = 0.148fm and the physical lattice size is about 4 times the Compton wavelength of the lowest mass pion. We have observed quenched chiral log in the fR data set, with 6 about 0.4. This work is partially supported by DOE Grants DE-FG05-84ER40154 and DE-FG02-95ER40907.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics