FeynHelpers manual (development version)

PaXEvaluateUVIRSplit

PaXEvaluateUVIRSplit[expr,q] is like PaXEvaluate, but with the difference that it explicitly distinguishes between UV- and IR-divergences.

The evaluation is using H. Patel’s Package-X.

See also

Overview, PaXEvaluateIR, PaXEvaluateUV, PaXEvaluate.

Examples

PaXEvaluateUVIRSplit[B0[SPD[p], 0, m^2], PaXSeries -> {{SPD[p], m^2, 1}}, PaXAnalytic -> True]

\frac{m^2-p^2}{2 m^2 \varepsilon _{\text{IR}}}-\frac{\left(3 m^2-p^2\right) \left(-\log \left(\frac{\mu ^2}{m^2}\right)+\gamma -2+\log (\pi )\right)}{2 m^2}+\frac{1}{\varepsilon _{\text{UV}}}