Bali, Gunnar S. and Collins, Sara and Ehmann, Christian (2011) Charmonium spectroscopy and mixing with light quark and open charm states from n(F)=2 lattice QCD. PHYSICAL REVIEW D, 84 (9): 094506. ISSN 1550-7998,
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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 flavor-singlet mesons and investigate the mixing of charmonia near open charm thresholds with pairs of (excited) D and (D) over bar 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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MULTIQUARK HADRONS; HEAVY QUARKONIUM; WILSON FERMIONS; FIELD-THEORIES; BOUND-STATES; GAUGE-THEORY; MONTE-CARLO; MESONS; NRQCD; SUBTRACTION; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Gunnar Bali |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 May 2020 12:36 |
| Last Modified: | 26 May 2020 12:36 |
| URI: | https://pred.uni-regensburg.de/id/eprint/19780 |
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