Exotic and excited-state radiative transitions in charmonium from lattice QCD

Details Exotic and excited-state radiative transitions in charmonium from lattice QCD Exotic and excited-state radiative transitions in charmonium from lattice QCD

2009-02-13

arxiv.org/abs/0902.2241v1

Phys.Rev.D79:094504,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1103/PhysRevD.79.094504

We compute, for the first time using lattice QCD methods, radiative transition rates involving excited charmonium states, states of high spin and exotics. Utilizing a large basis of interpolating fields we are able to project out various excited state contributions to three-point correlators computed on quenched anisotropic lattices. In the first lattice QCD calculation of the exotic 1-+ eta_c1 radiative decay, we find a large partial width Gamma(eta_c1 -> J/psi gamma) ~ 100 keV. We find clear signals for electric dipole and magnetic quadrupole transition form factors in chi_c2 -> J/psi gamma, calculated for the first time in this framework, and study transitions involving excited psi and chi_c1,2 states. We calculate hindered magnetic dipole transition widths without the sensitivity to assumptions made in model studies and find statistically significant signals, including a non-exotic vector hybrid candidate Y_hyb? -> eta_c gamma. As well as comparison to experimental data, we discuss in some detail the phenomenology suggested by our results and the extent to which it mirrors that of quark potential models and make suggestions for the interpretation of our results involving exotic quantum numbered states.

Affiliated with

Also associated with

No associations

Rating

Exotic and excited-state radiative transitions in charmonium from lattice QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Exotic and excited-state radiative transitions in charmonium from lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exotic and excited-state radiative transitions in charmonium from lattice QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-356983