English

The Golden Point of No-Scale and No-Parameter ${\cal F}$-SU(5)

High Energy Physics - Phenomenology 2011-05-10 v2 Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment High Energy Physics - Theory

Abstract

The F{\cal F}-lipped SU(5)×U(1)XSU(5)\times U(1)_X Grand Unified Theory (GUT) supplemented by TeV-scale vector-like particles from F{\cal F}-theory, together dubbed F{\cal F}-SU(5), offers a natural multi-phase unification process which suggests an elegant implementation of the No-Scale Supergravity boundary conditions at the unification scale MF7×1017M_{\cal F} \simeq 7 \times 10^{17} GeV. Enforcing the No-Scale boundary conditions, including Bμ(MF)=0B_\mu(M_{\cal F})=0 on the Higgs bilinear soft term, with the precision 7-year WMAP value on the dark matter relic density isolates a highly constrained "golden point" located near M1/2=455M_{1/2} = 455 GeV and tanβ=15\tan \beta = 15 in the tanβM1/2\tan\beta-M_{1/2} plane, which simultaneously satisfies all known experiments, and moreover corresponds to an imminently observable proton decay rate. Because the universal gaugino mass is actually determined from established low energy data via Renormalization Group Equation (RGE) running, there are no surviving arbitrary scale parameters in the present model.

Keywords

Cite

@article{arxiv.1007.5100,
  title  = {The Golden Point of No-Scale and No-Parameter ${\cal F}$-SU(5)},
  author = {Tianjun Li and James A. Maxin and Dimitri V. Nanopoulos and Joel W. Walker},
  journal= {arXiv preprint arXiv:1007.5100},
  year   = {2011}
}

Comments

4 pages, 3 figures, PRD Version