%0 Unpublished work
%T Revisiting No-Scale Supergravity Inspired Scenarios
%+ 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
%Z Proceedings of the 2011 Europhysics Conference on High Energy Physics, EPS-HEP 2011, July 21-27, 2011 Grenoble, Rhône-Alpes, France
%Z L2C:11-268
%8 2011-11-15
%D 2011
%Z 1111.3455
%Z Physics [physics]/High Energy Physics - Phenomenology [hep-ph]Preprints, Working Papers, ...
%X We consider no-scale supergravity inspired scenarios, emphasizing the possible dynamical determination of the soft supersymmetry-breaking parameters as triggered by the radiative corrections that lift an essentially flat tree-level potential in the hidden sector. We (re)emphasize the important role played by the scale-dependent vacuum energy contribution to the effective potential for the occurrence of consistent no-scale minima. The most relevant input parameters are introduced as $B_0$ (the soft breaking mixing Higgs parameter) and $\eta_0$ (the cosmological constant value at high energy) instead of $\mhalf$ and $\tan \beta$, the latter being determined through a (generalized) potential minimization at electroweak scales. We examine the theoretical and phenomenological viability of such a mechanism when confronted with up-to-date calculations of the low energy sparticle spectrum and with present constraints from the LHC and other observables. The tight dark matter relic density constraint for a neutralino LSP scenario can be considerably relaxed for a gravitino LSP scenario possible in this framework.
%G English
%L hal-00653505
%U https://hal.science/hal-00653505
%~ UNIV-SAVOIE
%~ UGA
%~ CNRS
%~ LAPTH
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ USMB-COMUE
%~ UM-2015-2021