Scotogenic dark matter and Dirac neutrinos from unbroken gauged $B-L$ symmetry
We propose a simple extension of the standard model where neutrinos get naturally small "scotogenic" Dirac masses from an unbroken gauged $B-L$ symmetry, ensuring dark matter stability. The associated gauge boson gets mass through the Stueckelberg mechanism. Two scenarios are identified, and the resulting phenomenology briefly sketched.
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High Energy Physics - Phenomenology
