Parity Invariance and Effective Light-Front Hamiltonians

Details Parity Invariance and Effective Light-Front Hamiltonians Parity Invariance and Effective Light-Front Hamiltonians

1996-01-17

arxiv.org/abs/hep-ph/9601289v1

Phys.Rev. D54 (1996) 2913-2920

Physics

High Energy Physics

High Energy Physics - Phenomenology

REVTEX, 9 pages

Scientific paper

10.1103/PhysRevD.54.2913

In the light-front form of field theory, boost invariance is a manifest symmetry. On the downside, parity and rotational invariance are not manifest, leaving the possibility that approximations or incorrect renormalization might lead to violations of these symmetries for physical observables. In this paper, it is discussed how one can turn this deficiency into an advantage and utilize parity violations (or the absence thereof) in practice for constraining effective light-front Hamiltonians. More precisely, we will identify observables that are both sensitive to parity violations and easily calculable numerically in a non-perturbative framework and we will use these observables to constrain the finite part of non-covariant counter-terms in effective light-front Hamiltonians.

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