New applications of CARLOMAT

TL;DR

This paper discusses modifications to CARLOMAT, enhancing its capabilities for calculating multiparticle reaction cross sections, including new features like phase space integration, parton density interfaces, and effective models, broadening its application scope.

Contribution

The paper introduces several new modifications to CARLOMAT, such as improved phase space routines, parton density interface, and inclusion of effective models, expanding its applicability for particle physics calculations.

Findings

Enhanced phase space integration routine.

Added interface to parton density functions.

Implemented effective models like scalar electrodynamics.

Abstract

Modifications of CARLOMAT, a program for automatic computation of the lowest order cross sections of multiparticle reactions, that include an abridgement of the phase space integration routine, an interface to parton density functions, improvement of the color matrix computation, supplementation of the Cabibbo-Kobayashi-Maskawa mixing in the quark sector, implementation of effective models such as scalar electrodynamics, the $Wtb$ interaction with operators of dimension up to 5 and a general top--Higgs coupling, are discussed. The modifications, together with recent developments concerning mainly description of the $e^+e^-$ annihilation into hadrons at low energies, broaden the spectrum of possible applications of the program.