We study phenomenological constraints in a simple SĒχy extension of the Standard Model with a 125-GeV Higgs, a vectorlike heavy electron (E), a complex scalar electron (S) and a Standard Model singlet Dirac fermion (χ). The interactions among the dark matter candidate χ and the Standard Model particles occur via loop-induced processes involving the Yukawa interaction SĒχy. The model is an explicit perturbative realization of so-called magnetic dark matter. The field content allows for a cancellation of quadratic divergences in the scalar masses at one loop, a phenomenon which we refer to as perturbative naturality. The basic model is constrained dominantly by direct detection experiments and its parameter space can be nearly entirely covered by upcoming ton-scale direct detection experiments. We conclude this work by discussing different variations of the model. © 2014 American Physical Society.
LUX constraints on magnetic dark matter in a perturbative extension of the standard model with(out) naturality / Frandsen, M. T.; Sannino, F.; Shoemaker, I. M.; Svendsen, O.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 89:5(2014). [10.1103/PhysRevD.89.055004]
LUX constraints on magnetic dark matter in a perturbative extension of the standard model with(out) naturality
Sannino F.;
2014
Abstract
We study phenomenological constraints in a simple SĒχy extension of the Standard Model with a 125-GeV Higgs, a vectorlike heavy electron (E), a complex scalar electron (S) and a Standard Model singlet Dirac fermion (χ). The interactions among the dark matter candidate χ and the Standard Model particles occur via loop-induced processes involving the Yukawa interaction SĒχy. The model is an explicit perturbative realization of so-called magnetic dark matter. The field content allows for a cancellation of quadratic divergences in the scalar masses at one loop, a phenomenon which we refer to as perturbative naturality. The basic model is constrained dominantly by direct detection experiments and its parameter space can be nearly entirely covered by upcoming ton-scale direct detection experiments. We conclude this work by discussing different variations of the model. © 2014 American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.