Scattering of nucleons on cold-dark-matter particles through photonic portal

Details Scattering of nucleons on cold-dark-matter particles through photonic portal Scattering of nucleons on cold-dark-matter particles through photonic portal

2010-04-07

arxiv.org/abs/1004.1048v2

Physics

General Physics

12 pages, two misprints are corrected

Scientific paper

In the model of hidden sector proposed recently, protons and neutrons scatter differently on cold-dark-matter particles. First, we summarize briefly our model based on a mechanism of "photonic portal" between hidden and Standard-Model sectors of the Universe. Then, we calculate in an elementary way the differential cross-sections for scattering of protons and neutrons on sterile Dirac fermions ("sterinos") playing the role of cold-dark-matter particles. They interact with nucleons through the photonic portal in a somewhat involved but natural manner. Due to this portal, the differential cross-section for protons displays a Coulomb-like forward singularity.

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