%0 Journal Article
%T Radiative Gamma decays and a light pseudoscalar Higgs in the NMSSM
%+ Laboratoire de Physique Théorique et Astroparticules (LPTA)
%A Domingo, Florian
%A Ellwanger, Ulrich
%A Fullana, Esteban
%A Hugonie, Cyril
%A Sanchis-Lozano, Miguel-Angel
%< avec comité de lecture
%Z 08-059
%@ 1126-6708
%J Journal of High Energy Physics
%I Springer
%V 01
%P 061
%8 2009
%D 2009
%Z 0810.4736
%R 10.1088/1126-6708/2009/01/061
%K Higgs Physics
%K B-Physics
%K Supersymmetric Standard Model
%K LARGE TAN-BETA
%K PHYSICS
%K BOSON
%K WEAK
%K SUPERGRAVITY
%K MASSES
%K MODEL
%K BOTTOMONIUM
%K QUARKONIUM
%K BREAKING
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Journal articles
%X 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.
%G English
%L hal-00335450
%U https://hal.science/hal-00335450
%~ IN2P3
%~ LPTA
%~ CNRS
%~ UNIV-MONTP2
%~ UNIV-MONTPELLIER
%~ UM1-UM2