Twist Three Distribution f_\perp(x,k^\perp) in Light-front Hamiltonian Approach

Details Twist Three Distribution f_\perp(x,k^\perp) in Light-front Hamiltonian Approach Twist Three Distribution f_\perp(x,k^\perp) in Light-front Hamiltonian Approach

2010-05-17

arxiv.org/abs/1005.2830v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

Two figures added, one author added, some parts rewritten for clarification

Scientific paper

We calculate the twist three distribution f_\perp(x,k^\perp) contributing to Cahn effect in unpolarized semi-inclusive deep inelastic scattering. We use light-front Hamiltonian technique and take the state to be a dressed quark at one loop in perturbation theory. The 'genuine twist three' contribution comes from the quark-gluon interaction part in the operator and is explicitly calculated. f_\perp(x,k^\perp) is compared with f_1(x,k^\perp).

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