Informal Pizza Seminar

The Minimal Supersymmetric Standard Model from heterotic string theory

Vincent Bouchard

Perimeter Institute

Recently we introduced a globally consistent compactification of heterotic string theory yielding exactly the massless spectrum of the Minimal Supersymmetric Standard Model, with no exotic particles. We computed, at the classical level, the superpotential tri-linear couplings of the low-energy physical theory, and obtained non-zero Yukawa couplings for the up quarks, and vanishing R-parity violating terms. We also obtained μ-mass parameters for the Higgs pairs and neutrino mass terms, with specific vector bundle moduli playing the role of right-handed neutrinos. In this talk I will summarize our construction and describe its physical properties. I will also explain the remaining challenges that need to be addressed in order to test phenomenological viability of this model, both at the particle physics and at the cosmological levels.

Based on:
- V. B. and R. Donagi, "An SU(5) Heterotic Standard Model", Phys. Lett. B633 (2006) 783-791 [arXiv: hep-th/0512149]
- V. B., M. Cvetic and R. Donagi, "Tri-linear Couplings in an Heterotic Minimal Supersymmetric Standard Model", Nucl. Phys. B745 (2006) 62-83 [arXiv: hep-th/0602096]
- V. B. and R. Donagi, work in progress