Nonperturbative corrections to the quark self-energy

Details Nonperturbative corrections to the quark self-energy Nonperturbative corrections to the quark self-energy

2001-05-15

arxiv.org/abs/hep-ph/0105141v2

Phys.Lett. B515 (2001) 137-147

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX2e, 13 pages, minor differences are done

Scientific paper

10.1016/S0370-2693(01)00876-0

Nonperturbative self-energy of a bound quark is computed gauge-invariantly in the framework of background perturbation theory. The resulting Delta m^2_q is negative and is a universal function of string tension and current quark mass. The shift of hadron mass squared, M^2, due to Delta m^2_q is negative, large for light quarks, and solves the long-standing problem of Regge intercepts in relativistic quark models.

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