PoS - Proceedings of Science
Volume 454 - 1st General Meeting and 1st Training School of the COST Action COSMIC WSIPers (COSMICWISPers) - Traning School Talks
Plasmonic resonant detection of WIMP
C. Alfisi* and H. Terças
Full text: Not available
Abstract
Theoretical works showed the existence of neutrino flux with energy below eV, the detection of these low energetic neutrino can shed light on Dark Matter problem along with the improvement
of the Standard Model; the detector used nowadays are not able to detect such energies, in this thesis we propose a technique to detect slow flux of massive neutrino by plasmon generation.
Through the semiclassical approximation of the Weak Interaction, we derived the force felt by a plasma due to the neutrino distribution, and vice-versa; therefore, by the Kinetic description with linear perturbation approach, we studied the interaction of electron-plasma with neutrino flux. The
long lifetime of plasmon in graphene structures oriented us to study bidimensional (2D) electron systems; the weak interaction, between neutrino and ungated electron solid-state plasma, leads
to a feature alike the beam-plasma instability, raising the possibility to have a growth rate. The generated plasmon has wavevector dependent on the neutrino velocity and spectral width function of the neutrino’s density and mass; the instability was considered in an effective tridimensional (3D) metamaterial obtained by graphene heterostructure, the resulting Signal to Noise ratio (SN) is mainly dependent on the length of the device. Large growth rates are found for neutrinos with energy in the $\mu$eV-meV range showing that the plasmon instability method can help in the detection of Neutrinos and WISP.
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