The static $Q\bar Q$ interaction at small distances and OPE violating terms

Details The static $Q\bar Q$ interaction at small distances and OPE violating terms The static $Q\bar Q$ interaction at small distances and OPE violating terms

1999-03-30

arxiv.org/abs/hep-ph/9903532v1

JETP Lett. 69 (1999) 505-508

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 5 pages, to be published in JETP Lett

Scientific paper

10.1134/1.568058

Nonperturbative contribution to the one-gluon exchange produces a universal linear term in the static potential at small distances $\Delta V=\frac{6N_c \alpha_s \sigma r}{2\pi}$. Its role in the resolution of long--standing discrepancies in the fine splitting of heavy quarkonia and improved agreement with lattice data for static potentials is discussed, as well as implications for OPE violating terms in other processes.

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