Chiral behavior of the rho meson in lattice QCD
- 8 October 2001
- journal article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 64 (9)
- https://doi.org/10.1103/physrevd.64.094502
Abstract
In order to guide the extrapolation of the mass of the rho meson calculated in lattice QCD with dynamical fermions, we study the contributions to its self-energy, which vary most rapidly as the quark mass approaches zero, from the processes and It turns out that in analyzing the most recent data from the CP-PACS Collaboration, it is crucial to estimate the self-energy from using the same grid of discrete momenta as included implicitly in the lattice simulation. The correction associated with the continuum infinite volume limit can then be found by calculating the corresponding integrals exactly. Our error analysis suggests that a factor of 10 improvement in statistics at the lowest quark mass for which data currently exists would allow one to determine the physical rho mass to within Finally, our analysis throws light on a long-standing problem with the J parameter.
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This publication has 22 references indexed in Scilit:
- Incorporating chiral symmetry and heavy quark theory in extrapolations of octet baryon charge radiiPhysics Letters B, 2000
- Incorporating chiral symmetry in extrapolations of octet baryon magnetic momentsPhysics Letters B, 2000
- Lattice QCD analysis of the strangeness magnetic moment of the nucleonPhysical Review D, 2000
- Lattice QCD calculations of the sigma commutatorPhysics Letters B, 2000
- Baryon masses from lattice QCD: Beyond the perturbative chiral regimePhysical Review D, 2000
- Comparative study of the full QCD hadron spectrum and the static quark potential with improved actionsPhysical Review D, 1999
- Light hadron spectroscopy withimproved dynamical fermionsPhysical Review D, 1999
- Nucleon magnetic moments beyond the perturbative chiral regimePhysical Review D, 1999
- reexaminedPhysical Review D, 1997
- Unquenching themesonPhysical Review D, 1994