## Abstract

We report our calculation of the pion decay constant f_{π}, the axial renormalization constant Z_{A}, and the quenched chiral logarithms from the overlap fermions. The calculation is done on a quenched 20^{4} 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.

Original language | English |
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Pages (from-to) | 341-343 |

Number of pages | 3 |

Journal | Nuclear Physics B - Proceedings Supplements |

Volume | 106-107 |

DOIs | |

State | Published - Mar 2002 |

### Bibliographical note

Funding 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

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