Nonperturbative effects in heavy quarkonia

Details Nonperturbative effects in heavy quarkonia Nonperturbative effects in heavy quarkonia

1994-09-22

arxiv.org/abs/hep-ph/9409389v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

Same results, but some conceptual ramifications and explanations. 32 pages. RevTex

Scientific paper

An effective hamiltonian for heavy quarkonia is derived from QCD by separating gluonic fields in background and quantum fields and neglecting anharmonic contributions. Mesonic states with nonperturbative gluonic components are constructed. These states are invariant under gauge changes of the background fields and form an orthogonal basis. The effective hamiltonian is diagonalized in this basis in a systematic $1/m$- and short distance expansion. For very heavy quarkonia, we obtain an effective potential similar to the phenomenological funnel potential. We compare our method to $2^{\rm nd}$ order perturbation theory in the background fields and demonstrate its applicability even for the relatively light charmonium system. The results to order $1/m$ for pseudoscalar meson masses and wave functions are shown and compared with those of the Cornell model.

Affiliated with

Also associated with

No associations

Rating

Nonperturbative effects in heavy quarkonia 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 Nonperturbative effects in heavy quarkonia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonperturbative effects in heavy quarkonia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-674560