Two-photon decay widths of Higgs particles

• DOI: 10.1016/0370-2693(93)90564-x
• Publication Date: 2003-02-04T23:36:59Z
• Authors: A. Djouadi; M. Spira; P.M. Zerwas
• Keywords: Higgs particle: width; electroweak interaction: symmetry breaking; FOS: Physical sciences; (Higgs particle 2photon): coupling; multiplet: Higgs particle; 530; 01 natural sciences; supersymmetry: minimal; Higgs particle: radiative decay; High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); symmetry breaking: electroweak interaction; Higgs particle: scalar particle; 0103 physical sciences; Higgs particle: multiplet; radiative decay: Higgs particle; decay: amplitude analysis; info:eu-repo/classification/ddc/530; numerical calculations; amplitude analysis: decay; Higgs particle: pseudoscalar particle; coupling: (Higgs particle 2photon)

8pages + 3figures (not included, a hard copy is available from A.D. upon request), Prep. DESY 92-170 (to appear in Phys. Lett. B)<br/>Two--photon decays of Higgs bosons are important channels for the search of these particles in the intermediate mass range at the $pp$ colliders LHC and SSC. Dynamical aspects of the Higgs coupling to two photons can also be studied by means of the $����$ fusion of Higgs particles at high--energy e$^+$e$^-$ linear colliders. Extending earlier analyses which had been restricted to the Standard Model, we present in this note the QCD radiative corrections to the $����$ decay widths of scalar and pseudoscalar Higgs particles in multi--doublet extensions of the Higgs sector, as realized for instance in supersymmetric theories.<br/>