FIZIKA B 8 (1999) 2, 261-270

QUARKONIUM IN THE WILSON LOOP FORMALISM: NEW PERSPECTIVES

N. BRAMBILLA^a  and A. VAIRO^b

^aInstitut für Theoretische Physik, Universität Wien, Boltzmanngasse 5,
A-1090 Vienna, Austria
^bInstitut für Hochenergiephysik, Österreichische Akademie der Wissenschaften, Nikolsdorfergasse 18,
A-1050 Vienna, Austria

Received 15 February 1999; Accepted 12 July 1999

We review the present knowledge on the heavy quark interaction. The framework is the NRQCD effective theory and the interaction is expressed in terms of Wilson loop chromoelectric and chromomagnetic insertions.

PACS numbers: 12.39.Hg, 12.39.Jh, 14.65.-q
UDC 539.126

Keywords: heavy quark interaction, nonrelativistic QCD, effective theory, Wilson loop chromoelectric and chromomagnetic insertions

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