Quenched QCD with<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>O</mml:mi><mml:mo>(</mml:mo><mml:mi>a</mml:mi><mml:mo>)</mml:mo><mml:mn /></mml:math>improvement: The spectrum of light hadrons



Bowler, KC, Boyle, P, Garden, J, Kenway, RD, Richards, DG, Rowland, PA, Ryan, SM, Simma, H, Michael, C, Shanahan, HP
et al (show 1 more authors) (2000) Quenched QCD with<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>O</mml:mi><mml:mo>(</mml:mo><mml:mi>a</mml:mi><mml:mo>)</mml:mo><mml:mn /></mml:math>improvement: The spectrum of light hadrons. Physical Review D, 62 (5).

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Abstract

We present a comprehensive study of the masses of pseudoscalar and vector mesons, as well as octet and decuplet baryons computed in O(a)-improved quenched lattice QCD. Results have been obtained using the nonperturbative definition of the improvement coefficient csw , and also its estimate in tadpole improved perturbation theory. We investigate effects of improvement on the incidence of exceptional configurations, mass splittings, and the parameter J. By combining the results obtained using nonperturbative and tadpole improvement in a simultaneous continuum extrapolation, we can compare our spectral data to experiment. We confirm earlier findings by the CP-PACS Collaboration that the quenched light hadron spectrum agrees with experiment at the 10% level.

Item Type: Article
Additional Information: LTH 464. arXiv Number: arXiv:hep-lat/9910022v3. Additional citation information: PHYSICAL REVIEW D, VOLUME 62, 054506; 0556-2821/2000/62(5)/054506(19). 19 pages. Published 28 July 2000. Issue: September 2000.
Uncontrolled Keywords: CHIRAL PERTURBATION-THEORY, IMPROVED LATTICE QCD, ONE-LOOP ORDER, WILSON FERMIONS, DECAY CONSTANTS, GLUEBALL MASSES, CONTINUUM-LIMIT, MATRIX-ELEMENTS, AXIAL CURRENT, QUARK MASSES
Subjects: ?? QC ??
Divisions: Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User: Symplectic Admin
Date Deposited: 31 Oct 2008 14:41
Last Modified: 17 Dec 2022 01:19
DOI: 10.1103/physrevd.62.054506
Publisher's Statement : ©2000 The American Physical Society
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/607