On the radiative corrections to the neutral Higgs boson masses in the NMSSM

G. Degrassi , Pietro Slavich (1, 2)

1 LAPTH - Laboratoire d'Annecy-le-Vieux de Physique Théorique
2 LPTHE - Laboratoire de Physique Théorique et Hautes Energies

We provide a full one-loop calculation of the self energies and tadpoles of the neutral Higgs bosons of the NMSSM. In addition, we compute the two-loop O(alpha_t*alpha_s+alpha_b*alpha_s) corrections to the neutral Higgs boson masses in the effective potential approximation. With respect to earlier calculations, the newly-computed corrections can account for shifts of a few GeV in the light scalar and pseudoscalar masses, and they can also sizeably affect the mixing between singlet and MSSM-like Higgs scalars. Taking these corrections into account will be crucial for a meaningful comparison between the MSSM and NMSSM predictions for the Higgs sector.

Domaines: Physique des Hautes Energies - Phénoménologie [hep-ph]

G. Degrassi, Pietro Slavich. On the radiative corrections to the neutral Higgs boson masses in the NMSSM. Nuclear Physics B, 2010, 825 (1-2), pp.119-150. ⟨10.1016/j.nuclphysb.2009.09.018⟩. ⟨hal-00408080⟩