Nonvanishing zero modes in the light-front current

Details Nonvanishing zero modes in the light-front current Nonvanishing zero modes in the light-front current

1998-05-24

arxiv.org/abs/hep-ph/9805438v3

Phys.Rev. D58 (1998) 071901

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages including 7 figures, to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.58.071901

We find that the zero mode($q^{+}=0$ mode of a continuum theory) contribution is crucial to obtain the correct values of the light-front current $J^{-}$ in the Drell-Yan($q^{+}=0$) frame. In the exactly solvable model of (1+1)-dimensional scalar field theory interacting with gauge fields, we quantify the zero mode contribution and observe that the zero mode effects are very large for the light meson form factors even though they are substantially reduced for the heavy meson cases.

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