D0C: A code to calculate scalar one-loop four-point integrals with complex masses. We present a new Fortran code to calculate the scalar one-loop four-point integral with complex internal masses, based on the method of ’t Hooft and Veltman. The code is applicable when the external momenta fulfill a certain physical condition. In particular it holds if one of the external momenta or a sum of them is timelike or lightlike and therefore covers all physical processes at colliders. All the special cases related to massless external particles are treated separately. Some technical issues related to numerical evaluation and Landau singularities are discussed.
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References in zbMATH (referenced in 3 articles )
Showing results 1 to 3 of 3.
- Cullen, G.; Guillet, J.-Ph.; Heinrich, G.; Kleinschmidt, T.; Pilon, E.; Reiter, T.; Rodgers, M.: Golem95C: a library for one-loop integrals with complex masses (2011)
- van Hameren, A.: OneLOop: for the evaluation of one-loop scalar functions (2011)
- Dao Thi Nhung; Le Duc Ninh: D0C: A code to calculate scalar one-loop four-point integrals with complex masses (2009)