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  • Singlet extensions of the MSSM in the quiver landscape
    Cvetič, Mirjam ; Halverson, James ; Langacker, Paul
    We map out possible extensions of the MSSM in the context of type II string theory. We systematically investigate three-stack and four-stack quivers which realize the MSSM spectrum with the addition ... of a single MSSM singlet S with an allowed SHuHd term, which can lead to a dynamical electroweak-scale mu-term. We present the three quivers which satisfy stringent string-theoreticand phenomenological constraints, including the presence of non-zero masses for all three families of quarks and leptons, the perturbative and non-perturbative absence of R-parity violating couplings and rapid dimension-five proton decay, and a mechanism for small neutrino masses. We find that these quivers can realize many models in the class of singlet-extended (supersymmetric) standard models, as D-instanton effects can in principle generate a superpotential of the form f(S), where f is a polynomial. Finally, we address the issue of the stabilization and decoupling of charged moduli which generically appear in D-instanton corrections to the superpotential.
    Vir: The Journal of high energy physics. - ISSN 1126-6708 (Vol. 9, art. no. 76, 2011, p. 1-20)
    Vrsta gradiva - članek, sestavni del
    Leto - 2011
    Jezik - angleški
    COBISS.SI-ID - 66896897
    DOI

vir: The Journal of high energy physics. - ISSN 1126-6708 (Vol. 9, art. no. 76, 2011, p. 1-20)

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