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Gravitational corrections to Standard Model vacuum decay
Gino Isidori, Vyacheslav S. Rychkov, Alessandro Strumia +1
We refine and update the metastability constraint on the Standard Model top and Higgs masses, by analytically including gravitational corrections to the vacuum decay rate. Present…
An alternative NMSSM phenomenology with manifest perturbative unification
Riccardo Barbieri, Lawrence J. Hall, Anastasios Y. Papaioannou +2
Can supersymmetric models with a moderate stop mass be made consistent with the negative Higgs boson searches at LEP, while keeping perturbative unification manifest? The NMSSM ach…
Supersymmetry without a light Higgs boson at the LHC
Leone Cavicchia, Roberto Franceschini, Vyacheslav S. Rychkov
We analyze the LHC phenomenology of lambdaSUSY - a version of NMSSM with a largish SH1H2 coupling. The scalar spectrum of the model contains a 200-300 GeV Higgs boson h with Standa…
The Higgs boson from an extended symmetry
Riccardo Barbieri, Brando Bellazzini, Vyacheslav S. Rychkov +1
The variety of ideas put forward in the context of a "composite" picture for the Higgs boson calls for a simple and effective description of the related phenomenology. Such a descr…
Thermal production of gravitinos
Vyacheslav S. Rychkov, Alessandro Strumia
We reconsider thermal production of gravitinos in the early universe, adding to previously considered 2 -> 2 gauge scatterings: a) production via 1 -> 2 decays, allowed by thermal…