English

A new (string motivated) approach to the little hierarchy problem

High Energy Physics - Phenomenology 2015-03-19 v2 High Energy Physics - Theory

Abstract

We point out that in theories where the gravitino mass, M3/2M_{3/2}, is in the range (10-50)TeV, with soft-breaking scalar masses and trilinear couplings of the same order, there exists a robust region of parameter space where the conditions for electroweak symmetry breaking (EWSB) are satisfied without large imposed cancellations. Compactified string/M-theory with stabilized moduli that satisfy cosmological constraints generically require a gravitino mass greater than about 30 TeV and provide the natural explanation for this phenomenon. We find that even though scalar masses and trilinear couplings (and the soft-breaking BB parameter) are of order (10-50)TeV, the Higgs vev takes its expected value and the μ\mu parameter is naturally of order a TeV. The mechanism provides a natural solution to the cosmological moduli and gravitino problems with EWSB.

Keywords

Cite

@article{arxiv.1105.3765,
  title  = {A new (string motivated) approach to the little hierarchy problem},
  author = {Daniel Feldman and Gordon Kane and Eric Kuflik and Ran Lu},
  journal= {arXiv preprint arXiv:1105.3765},
  year   = {2015}
}

Comments

6 pages, 3 figs, V2 has additional comments

R2 v1 2026-06-21T18:09:25.122Z