Hidden Sector Dirac Dark Matter, Stueckelberg Z' Model and the CDMS and XENON Experiments - High Energy Physics - PhenomenologyReport as inadecuate




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Abstract: For the milli-charged Dirac dark matter in the Stueckelberg Z- model, wediscuss the contributions from the vector couplings of the dark matter with theneutral gauge bosons to the spin-independent scattering cross section in thedirect detections. We also compute the effective coupling between the fermionicdark matter particle and the standard model Higgs boson generated through atriangular loop of Z and-or Z- bosons which may contribute to thespin-independent scattering cross section at the quantum level. We show thatthe latter contribution is consistent with the most recent experimental limitsfrom CDMS II and XENON100. In the case that the dark matter particle carries amilli-charge of order O10^{-3}e, we found that it would lose all its kineticenergy by colliding with nucleons in the atmosphere before reaching thedetector. Even though we use the Stueckelberg Z- model for illustration, theresults we obtain are rather general and applicable to other Z-Z- portal-typehidden-sector models as well.



Author: Kingman Cheung, Kuo-Hsing Tsao, Tzu-Chiang Yuan

Source: https://arxiv.org/







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