Hadronic production of neutral MSSM Higgs boson plus Z boson

Abstract

We calculate analytically the partonic cross sections for producing CP-even neutral Higgs boson plus Z boson from two hadronic initial states within the minimal supersymmetric extension of the standard model (MSSM). To lowest order in perturbation theory, the contributing partonic cross sections include tree-level quark-antiquark (qq̅) annihilation and one-loop gluon-gluon (gg) fusion, which proceeds via quark and squark loops. The fusion cross sections are expressed in terms of helicity amplitudes, whose form factors depend on loop integrals that are reduced to three- and four-point scalar functions.