Scalar Glueball in Radiative J/ψ Decay on the Lattice
Abstract
The form factors in the radiative decay of J/ψ to a scalar glueball are studied within quenched lattice QCD on anisotropic lattices. The continuum extrapolation is carried out by using two different lattice spacings. With the results of these form factors, the partial width of J/ψ radiatively decaying into the pure gauge scalar glueball is predicted to be 0.35(8) keV, which corresponds to a branching ratio of 3.8(9)×10-3. By comparing with experiments, out results indicate that f0(1710) has a larger overlap with the pure gauge glueball than other related scalar mesons.
- Publication:
-
Physical Review Letters
- Pub Date:
- January 2013
- DOI:
- 10.1103/PhysRevLett.110.021601
- arXiv:
- arXiv:1206.0125
- Bibcode:
- 2013PhRvL.110b1601G
- Keywords:
-
- 11.15.Ha;
- 12.38.Gc;
- 12.39.Mk;
- 13.25.Gv;
- Lattice gauge theory;
- Lattice QCD calculations;
- Glueball and nonstandard multi-quark/gluon states;
- Decays of J/psi Upsilon and other quarkonia;
- High Energy Physics - Lattice;
- High Energy Physics - Experiment;
- High Energy Physics - Phenomenology
- E-Print:
- 5 pages, 3 figures, typos corrected, references corrected and added, published version