Binding Energy Effects on QED and QCD Bound State Annihilation Rates and Spectra

Details Binding Energy Effects on QED and QCD Bound State Annihilation Rates and Spectra Binding Energy Effects on QED and QCD Bound State Annihilation Rates and Spectra

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003fuin.conf..354s&link_type=abstract

FUNDAMENTAL INTERACTIONS. Proceedings of the Seventeenth Lake Louise Winter Institute. Held 17-23 February 2002 in Lake Louise,

Computer Science

Scientific paper

QED gauge invariance, when combined with analyticity, leads to constraints on the low energy end of the emitted photon spectra. This is known as Low's theorem. Standard QED and QCD bound state models produce decay amplitudes in contradiction with that fundamental theorem, i.e. they predict incorrect photon spectra. To solve this problem, the binding energy of the constituents inside the bound state must be treated non-perturbatively. To this end, a new, simple method to compute QED bound state properties is proposed. It is shown to solve the analytical problem of NRQED. For QCD bound state, a non- perturbative treatment of the sizeable quarkonium binding energy leads to interesting perspectives.

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