Solving for tadpole coefficients in one-loop amplitudes

Details Solving for tadpole coefficients in one-loop amplitudes Solving for tadpole coefficients in one-loop amplitudes

2009-04-17

arxiv.org/abs/0904.2766v2

Phys.Lett.B681:376-381,2009

Physics

High Energy Physics

High Energy Physics - Theory

9 pages. v2: Eq. (28) corrected, typos fixed, minor improvements

Scientific paper

10.1016/j.physletb.2009.10.038

One-loop amplitudes may be expanded in a basis of scalar integrals multiplied
by rational coefficients. We relate the coefficient of the one-point integral
to the coefficients of higher-point integrals, by considering the effects of
introducing an additional, unphysical propagator, subject to certain
conditions.

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