| Domaine : |
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Physique/Physique des Hautes Energies - Phénoménologie
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| Titre : |
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Higgs bosons near 125 GeV in the NMSSM with constraints at the GUT scale |
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| Auteur(s) : |
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Ulrich Ellwanger1, Cyril Hugonie2 |
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| Laboratoire : |
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| Résumé : |
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We study the NMSSM with universal Susy breaking terms (besides the Higgs sector) at the GUT scale. Within this constrained parameter space, it is not difficult to find a Higgs boson with a mass of about 125 GeV and an enhanced cross section in the diphoton channel. An additional lighter Higgs boson with reduced couplings and a mass <123 GeV is potentially observable at the LHC. The NMSSM-specific Yukawa couplings lambda and kappa are relatively large and tan(beta) is small, such that lambda, kappa and the top Yukawa coupling are of order 1 at the GUT scale. The lightest stop can be as light as 105 GeV, and the fine-tuning is modest. WMAP constraints can be satisfied by a dominantly higgsino-like LSP with substantial bino, wino and singlino admixtures and a mass of ~60-90 GeV, which would potentially be detectable by XENON100. |
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Langue du texte
intégral : |
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Anglais |
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Date de production,
écriture : |
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22/03/2012 |
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| Journal : |
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Adv.High Energy Phys. |
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| Audience : |
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internationale |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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| Date de publication : |
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2012 |
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| Volume : |
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2012 |
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| Page, identifiant, ... : |
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625389 |
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| Commentaire : |
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20 pages, 14 figures |
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| Référence interne : |
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LPT-ORSAY 12-27 ; LUPM 12-010 |
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