Hidden Fermion in Stueckelberg Z' Models as Millicharged Dark Matter
Abstract
The hidden Stueckelberg Z' model is augmented by a pair of Dirac fermions. If the Z' has a coupling strength comparable to weak scale coupling, one can show that this hidden fermionantifermion pair could be a millicharged dark matter candidate with a viable relic density. Monochromatic photon flux coming from the Galactic center due to pair annihilation of these millicharged particles is calculated and is shown to be within reach of the next generation gammaray experiments. Characteristic collider signature of this theoretical endeavor is that the Stueckelberg Z' boson has a large invisible width decaying into the hidden fermionantifermion pair if kinematically allowed. Singly production of this Z' boson at the LHC and ILC are studied.
 Publication:

arXiv eprints
 Pub Date:
 October 2007
 arXiv:
 arXiv:0710.2005
 Bibcode:
 2007arXiv0710.2005C
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 Submitted for the SUSY07 proceedings, 4 pages, LaTeX, 7 eps figures. More references added