Hadron spectrum in QCD at 6g2=5.6

Khalil M. Bitar, R. Edwards, U. M. Heller, A. D. Kennedy, Weiqiang Liu, Thomas A. Degrand, Steven Gottlieb, A. Krasnitz, J. B. Kogut, R. L. Renken, Michael C. Ogilvie, Pietro Rossi, D. K. Sinclair, K. C. Wang, R. L. Sugar, Michael Teper, D. Toussaint

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61 Scopus citations

Abstract

We have carried out a simulation of QCD using the hybrid-molecular-dynamics algorithm with two flavors of staggered quarks. The spectrum was calculated for 6g2=5.6 and dynamical quark masses amq=0.025 and 0.01. Lattice sizes of 124, 123×24, and 164 were used to generate the gauge configurations. Hadron propagators were calculated with both staggered and Wilson quarks on doubled or quadrupled latices. Finite-size effects are visible on the smaller lattices. Some improvement in the to-nucleon mass ratio and chiral symmetry is seen as compared to previous calculations, but, as in most lattice calculations, the proton-to mass ratio remains larger than in the real world and the proton splitting is too small.

Original languageEnglish (US)
Pages (from-to)3794-3818
Number of pages25
JournalPhysical Review D
Volume42
Issue number11
DOIs
StatePublished - Jan 1 1990

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Bitar, K. M., Edwards, R., Heller, U. M., Kennedy, A. D., Liu, W., Degrand, T. A., Gottlieb, S., Krasnitz, A., Kogut, J. B., Renken, R. L., Ogilvie, M. C., Rossi, P., Sinclair, D. K., Wang, K. C., Sugar, R. L., Teper, M., & Toussaint, D. (1990). Hadron spectrum in QCD at 6g2=5.6. Physical Review D, 42(11), 3794-3818. https://doi.org/10.1103/PhysRevD.42.3794