Metastable Vacuum in Spontaneously Broken N=2 Supersymmetric Gauge Theory

Show simple item record Okada, Nobuchika 2019-05-22T18:06:02Z 2019-05-22T18:06:02Z 2007-12-06 en_US
dc.description.abstract We consider an N=2 supersymmetric SU(2) × U(1) gauge theory with N⌄(f)=2 massless flavors and a Fayet-Iliopoulos (FI) term. In the presence of the FI term, supersymmetry is spontaneously broken at tree level (on the Coulomb branch), leaving a pseudoflat direction in the classical potential. This vacuum degeneracy is removed once quantum corrections are taken into account. Because of the SU(2) gauge dynamics, the effective potential exhibits a local minimum at the dyon point, where not only supersymmetry but also U(1)⌄R symmetry is broken, while a supersymmetric vacuum would be realized toward infinity with the runaway behavior of the potential. This local minimum is found to be parametrically long-lived. Interestingly, from a phenomenological point of view, in this metastable vacuum the massive hypermultiplets inherent in the theory play the role of the messenger fields in the gauge mediation scenario, when the standard model gauge group is embedded into their flavor symmetry. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.subject Supersymmetric models en_US
dc.title Metastable Vacuum in Spontaneously Broken N=2 Supersymmetric Gauge Theory en_US
dc.type text en_US

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