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

Abstract

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

23 pages, v2: references updated, correction of an ambiguous statement, minor typos corrected, some figures updated

References in corpus (15)

• Heavy quarkonium: progress, puzzles, and opportunities
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Charmonium
• The Exotic XYZ Charmonium-like Mesons
• Quarkonia and their transitions
• Hadro-Charmonium
• Charmonium excited state spectrum in lattice QCD
• Lattice study of light scalar tetraquarks with I=0,2,1/2,3/2: are sigma and kappa tetraquarks?
• Quarkonium mass splittings in three-flavor lattice QCD
• Indications of a Four-Quark Structure for the X(3872) and X(3876) Particles from Recent Belle and BABAR Data
• Charm quark system at the physical point of 2+1 flavor lattice QCD
• Novel Charmonium and Bottomonium Spectroscopies due to Deeply Bound Hadronic Molecules from Single Pion Exchange
• X(3872) in lattice QCD with exact chiral symmetry
• Charm annihilation effects on the hyperfine splitting in charmonium
• Charmonia from Lattice QCD

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