Directional detection of Dark Matter particles (DM) in the MeV mass range could be accomplished by studying electron recoils in large arrays of parallel carbon nanotubes. In a scattering process with a lattice electron, a DM particle might transfer sufficient energy to eject it from the nanotube surface. An external electric field is added to drive the electron from the open ends of the array to the detection region. The anisotropic response of this detection scheme, as a function of the orientation of the target with respect to the DM wind, is calculated, and it is concluded that no direct measurement of the electron ejection angle is needed to explore significant regions of the light DM exclusion plot. A compact sensor, in which the cathode element is substituted with a dense array of parallel carbon nanotubes, could serve as the basic detection unit.

Sub-GeV dark matter detection with electron recoils in carbon nanotubes / Cavoto, G.; Luchetta, F.; Polosa, A. D.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 776:(2018), pp. 338-344. [10.1016/j.physletb.2017.11.064]

Sub-GeV dark matter detection with electron recoils in carbon nanotubes

Cavoto, G.
Membro del Collaboration Group
;
Polosa, A. D.
Membro del Collaboration Group
2018

Abstract

Directional detection of Dark Matter particles (DM) in the MeV mass range could be accomplished by studying electron recoils in large arrays of parallel carbon nanotubes. In a scattering process with a lattice electron, a DM particle might transfer sufficient energy to eject it from the nanotube surface. An external electric field is added to drive the electron from the open ends of the array to the detection region. The anisotropic response of this detection scheme, as a function of the orientation of the target with respect to the DM wind, is calculated, and it is concluded that no direct measurement of the electron ejection angle is needed to explore significant regions of the light DM exclusion plot. A compact sensor, in which the cathode element is substituted with a dense array of parallel carbon nanotubes, could serve as the basic detection unit.
2018
nuclear and high energy physics
01 Pubblicazione su rivista::01a Articolo in rivista
Sub-GeV dark matter detection with electron recoils in carbon nanotubes / Cavoto, G.; Luchetta, F.; Polosa, A. D.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 776:(2018), pp. 338-344. [10.1016/j.physletb.2017.11.064]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1073078
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