Charmonium spectroscopy and mixing with light quark and open charm states fromnF=2lattice QCD

2011/10/31 by Gunnar Bali, Gunnar S. Bali, Sara Collins +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph

paper · pdf · doi:10.1103/physrevd.84.094506

published as Phys. Rev. D84, 094506 (2011) · 23 pages, v2: references updated, correction of an ambiguous statement, minor typos corrected, some figures updated

arxiv created 2011/11/18 · openalex publication_date 2011/11/29 · arxiv updated 2015/03/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the charmonium spectrum including higher spin and gluonic excitations. We determine an upper limit on the mixing of the \ensuremathη_c ground state with light pseudoscalar flavor-singlet mesons and investigate the mixing of charmonia near open charm thresholds with pairs of (excited) D and D mesons. For charm and light valence quarks and n_F=2 sea quarks, we employ the nonperturbatively improved Sheikholeslami-Wohlert (clover) action. Excited states are accessed using the variational technique, starting from a basis of suitably optimized operators. For some aspects of this study, the use of improved stochastic all-to-all propagators was essential.

Citations

• Effective noise reduction techniques for disconnected loops in Lattice QCD
• Lattice QCD calculation of theρmeson decay width
• Potential NRQCD: an effective theory for heavy quarkonium
• Quarkonia and their transitions
• Novel charmonium and bottomonium spectroscopies due to deeply bound hadronic molecules from single pion exchange
• Application of heavy-quark effective theory to lattice QCD: Power corrections
• The Chroma Software System for Lattice QCD
• The Exotic XYZ Charmonium-Like Mesons
• Glueball spectrum and matrix elements on anisotropic lattices
• Review of Particle Physics
• Charmonium