%0 Journal Article
%T Revisiting no-scale supergravity inspired scenarios: Updated theoretical and phenomenological constraints
%+ Laboratoire Charles Coulomb (L2C)
%+ Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTH)
%A Benhenni, Amine Lies
%A Kneur, Jean-Loïc
%A Moultaka, Gilbert
%A Bailly, Sean
%< avec comité de lecture
%Z LAPTH-026/11 L2C:11-096
%@ 1550-7998
%J Physical Review D
%I American Physical Society
%V 84
%N 7
%P 075015
%8 2011-10-18
%D 2011
%Z 1106.6325
%R 10.1103/PhysRevD.84.075015
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Journal articles
%X We consider no-scale inspired supergravity scenarios, where the gravitinomass and related soft supersymmetry-breaking parameters are determineddynamically by radiative corrections to an essentially flat tree-levelpotential in the supersymmetry breaking hidden sector. We examine thetheoretical and phenomenological viability of such a mechanism, when includingup-to-date calculations of the low energy sparticle spectrum and taking intoaccount the latest LHC results and other experimental constraints. We(re)emphasize the role of the scale-dependent vacuum energy contribution to theeffective potential, in obtaining realistic no-scale electroweak minima,examining carefully the impact of boundary conditions and of variants of theminimization procedure. We also discuss and implement the B_0 (soft breakingHiggs mixing parameter) input boundary condition at high scale, thereforefixing tan beta(B_0) at low scales. For general high scale boundary conditionswith non-vanishing B_0, m_0..., our analysis provides theoretical correlationsamong the supersymmetric, soft and vacuum energy parameters and relatedphenomenological consequences at the LHC. For instance, a zero vacuum energy atthe GUT scale would lead to a decoupled supersymmetric spectrum, together witha light standard model-like Higgs boson at the electroweak scale. Given theexperimental exclusion limits, a substantial class of the boundary conditions,and in particular the strict no-scale with m_0=A_0=B_0=0, are only compatiblewith a stau being the lightest MSSM particle. Then an enlarged allowedparameter space emerges when assuming a gravitino LSP to account for theobserved dark matter relic density.
%G English
%2 https://hal.science/hal-00608561/document
%2 https://hal.science/hal-00608561/file/PhysRevD.90.11208.pdf
%L hal-00608561
%U https://hal.science/hal-00608561
%~ UNIV-SAVOIE
%~ UGA
%~ CNRS
%~ LAPTH
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ USMB-COMUE
%~ UM-2015-2021