10,036 research outputs found
Probing features of the Lee-Wick quantum electrodynamics
In this paper we discuss some aspects concerning the electromagnetic sector
of the abelian Lee-Wick (LW) quantum electrodynamics (QED). Using the Dirac's
theory of constrained systems, the higher-order canonical quantization of the
LW electromagnetism is performed. A quantum bound on the LW heavy mass is also
estimated using the best known measurement of the anomalous magnetic moment of
the electron. Finally it is shown that magnetic monopoles can coexist
peacefully in the LW scenario.Comment: Replaced with published versio
Minimally Extended Left-Right Symmetric Model for Dark Matter with U(1) Portal
A minimal extension of the left-right symmetric model for neutrino masses
that includes a vector-like singlet fermion dark matter (DM) is presented with
the DM connected to the visible sector via a gauged U(1) portal. We discuss the
symmetry breaking in this model and calculate the mass and mixings of the extra
heavy neutral gauge boson at the TeV scale. The extra gauge boson can decay to
both standard model particles as well to dark matter. We calculate the relic
density of the singlet fermion dark matter and its direct detection cross
section and use these constraints to obtain the allowed parameter range for the
new gauge coupling and the dark matter mass.Comment: 19 pages, 8 figure
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