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Manuscript Title: SHELL2: package for the calculation of two-loop on-shell Feynman diagrams in FORM.
Authors: J. Fleischer, O.V. Tarasov
Program title: SHELL2
Catalogue identifier: ACHZ_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 71(1992)193
Programming language: Form.
Peripherals: disc.
Keywords: General purpose, Diagramatic expansions, Quantum field theory, Qed, Qcd, High energy physics, Perturbation theory, Dimensional Regularization, Multiloop feynman Integral.
Classification: 4.4.

Nature of problem:
Dimensionally regularized multiloop massive Feynman integrals of the propagator type appearing in quantum field theory and in particular in high energy calculations are computed analytically.

Solution method:
We apply the method of integration by parts. The integration is reduced to simple algebraic transformations of the integrand.

Restrictions:
Only scalar integrals are permitted as "input". The program so far allows only the calculation of up to two-loop integrals but should be extensible for higher orders. Moreover the program allows at present only for one massive on-shell particle or one independent on-shell momentum.

Running time:
The typical running time strongly depends on the topology and complexity of the calculated diagram.