Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2002-09-26
Physics
High Energy Physics
High Energy Physics - Lattice
Lattice2002(spectrum); 3pgs(Latex), 8figs.(ps)
Scientific paper
10.1016/S0920-5632(03)01514-7
We present results of a high-statistics study of scalar and pseudoscalar meson propagators in quenched QCD at two values of lattice spacing, beta = 5.7 and 5.9, with clover-improved Wilson fermions. The study of the chiral limit is facilitated by the pole-shifting ansatz of the modified quenched approximation. Pseudoscalar masses and decay constants are determined as a function of quark mass and quenched chiral log effects are estimated. A study of the flavor singlet eta prime hairpin diagram yields a precise determination of the eta prime mass insertion. The corresponding value of the quenched chiral log parameter delta is compared with the observed QCL effects. Removal of QCL effects from the scalar propagator allows a determination of the mass of the lowest lying isovector scalar $q\bar{q}$ meson.
Bardeen W.
Eichten Estia
Thacker Hank
No associations
LandOfFree
Low Energy Chiral Lagrangian Parameters for Scalar and Pseudoscalar Mesons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Low Energy Chiral Lagrangian Parameters for Scalar and Pseudoscalar Mesons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low Energy Chiral Lagrangian Parameters for Scalar and Pseudoscalar Mesons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-523669