Inducing the 渭 and the B渭 term by the radion and the 5d Chern-Simons term
Journal of High Energy Physics 2009:8 (2009)
Abstract:
In 5-dimensional models with gauge-Higgs unification, the F-term vacuum expectation value of the radion provides, in close analogy to the Giudice-Masiero mechanism, a natural source for the 渭 and B渭 term. Both the leading order gauge theory lagrangian and the supersymmetric Chern-Simons term contain couplings to the radion superfield which can be used for this purpose. We analyse the basic features of this mechanism for 渭 term generation and provide an explicit example, based on a variation of the SU(6) gauge-Higgs unification model of Burdman and Nomura. This construction contains all the relevant features used in our generic analysis. More generally, we expect our mechanism to be relevant to many of the recently discussed orbifold GUT models derived from heterotic string theory. This provides an interesting way of testing high-scale physics via Higgs mass patterns accessible at the LHC. 漏 SISSA 2009.Non-Gaussianity from violation of slow-roll in multiple inflation
(2009)
Deviations from NLO QCD evolution in inclusive HERA data
(2009)
Aspects of Flavour and Supersymmetry in F-theory GUTs
ArXiv 0910.2413 (2009)
Abstract:
We study the constraints of supersymmetry on flavour in recently proposed models of F-theory GUTs. We relate the topologically twisted theory to the canonical presentation of eight-dimensional super Yang-Mills and provide a dictionary between the two. We describe the constraints on Yukawa couplings implied by holomorphy of the superpotential in the effective 4-dimensional supergravity theory, including the scaling with 伪_{GUT}. Taking D-terms into account we solve explicitly to second order for wavefunctions and Yukawas due to metric and flux perturbations and find a rank-one Yukawa matrix with no subleading corrections.Aspects of Flavour and Supersymmetry in F-theory GUTs
(2009)