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Radiative Gamma decays and a light pseudoscalar Higgs in the NMSSM ![]() Auteur(s): Domingo Florian, Ellwanger Ulrich, Fullana Esteban, Hugonie C., Sanchis-Lozano Miguel-Angel
(Article) Publié:
Journal Of High Energy Physics, vol. 01 p.061 (2009)
Texte intégral en Openaccess : Ref HAL: hal-00335450_v1 Ref Arxiv: 0810.4736 DOI: 10.1088/1126-6708/2009/01/061 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 49 citations Résumé: We study possible effects of a light CP-odd Higgs boson on radiative Gamma decays in the Next-to-Minimal Supersymmetric Standard Model. Recent constraints from CLEO on radiative Gamma(1S) decays are translated into constraints on the parameter space of CP-odd Higgs boson masses and couplings, and compared to constraints from B physics and the muon anomalous magnetic moment. Possible Higgs-eta(b)(nS) mixing effects are discussed, notably in the light of the recent measurement of the eta(b)(1S) mass by Babar: The somewhat large Gamma(IS) - eta(b)(1S) hyperfine splitting could easily be explained by the presence of a CP-odd Higgs boson with a mass in the range 9.4 - 10.5 GeV. Then, tests of lepton universality in inclusive radiative Gamma decays can provide a visible signal in forthcoming experimental data. |