Order a improved renormalization constants
| dc.creator | Bhattacharya, Tanmoy | |
| dc.creator | Gupta, Rajan | |
| dc.creator | Lee, Weonjong | |
| dc.creator | Sharpe, Stephen | |
| dc.date | 2000-09-28 | |
| dc.date | 2001-05-07 | |
| dc.date.accessioned | 2026-07-07T03:38:23Z | |
| dc.date.available | 2026-07-07T03:38:23Z | |
| dc.description | We present non-perturbative results for the constants needed for on-shell $O(a)$ improvement of bilinear operators composed of Wilson fermions. We work at $β=6.0$ and 6.2 in the quenched approximation. The calculation is done by imposing axial and vector Ward identities on correlators similar to those used in standard hadron mass calculations. A crucial feature of the calculation is the use of non-degenerate quarks. We also obtain results for the constants needed for off-shell $O(a)$ improvement of bilinears, and for the scale and scheme independent renormalization constants, (Z_A), (Z_V) and (Z_S/Z_P). Several of the constants are determined using a variety of different Ward identities, and we compare their relative efficacies. In this way, we find a method for calculating $c_V$ that gives smaller errors than that used previously. Wherever possible, we compare our results with those of the ALPHA collaboration (who use the Schrödinger functional) and with 1-loop tadpole-improved perturbation theory. | |
| dc.description | 48 pages. Modified "axis" source for figures also included. Typos corrected (version published in Phys. Rev. D) | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0009038 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0009038 | |
| dc.identifier | Phys.Rev. D63 (2001) 074505 | |
| dc.identifier | doi:10.1103/PhysRevD.63.074505 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/38510 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.title | Order a improved renormalization constants | |
| dc.type | text |