An investigation of meson spectroscopy on isotropic clover lattices at the SU(3) flavor-symmetric point

Conference · Mon Jun 23 00:00:00 EDT 2014

OSTI ID:1209685

Richards, David G. ^[1]; Orginos, Konstantinos ^[2]

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1. Jefferson Lab, Newport News, VA
2. William and Mary College, Williamsburg, VA; Jefferson Lab, Newport News, VA

We present an investigation of the excited meson spectrum at the N_f= 3 point obtained on isotropic clover lattices with a plaquette Wilson gauge action, and a NP-improved clover fermion action, at a lattice spacing of a \simeq 0.08 fm, and compare with corresponding calculations on an anisotropic lattice at fine temporal lattice spacing but a spatial lattice spacing of a_s \simeq 0.125 fm. The methodology adopted follows that employed in the calculation of the spectrum on anisotropic lattices, and we test the efficacy of that approach for isotropic lattices. In particular, we explore the extent to which rotational symmetry for predominantly single-hadron states is realized. By comparison of the energy levels with that obtained using the anisotropic lattice, we obtain an indication of discretization uncertainties in the single-hadron spectrum.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1209685
• Report Number(s): JLAB-THY-14-1956; DOE/OR/23177-3503
• Resource Relation: Conference: Lattice 2014, 23-28 June, 2014 , Columbia University New York, NY
• Country of Publication: United States
• Language: English