Light Dark Matter search with a positron beam

Bisio, P. (2022) Light Dark Matter search with a positron beam. Il nuovo cimento C, 45 (5). pp. 1-4. ISSN 1826-9885

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Abstract

Although the existence of Dark Matter has been confirmed by a variety of gravitational measurements, to date there are no conclusive indications about its particle nature. Light Dark Matter (LDM) particles, with mass in the range of 1 MeV–1000 MeV, represent a theoretically well-motivated solution for the Dark Matter puzzle. Among the LDM theories, the simplest model introduces a new light gauge boson called Dark Photon (A0). In this theory, the A0 can be generatedby the interaction of Standard Model charged particles with ordinary matter and subsequently decays into an LDM particle pair. In this scenario, an experiment making use of a positron beam impacting on a thick active target would have a unique discovery potential, since the positron annihilation process with atomic electrons provides an efficient mechanism for LDM generation. In this work, the feasibility and the potential of a missing energy experiment using a ∼10 GeV positron beam are discussed.

Item Type:	Article
Subjects:	500 Scienze naturali e Matematica > 530 Fisica
Depositing User:	Marina Spanti
Date Deposited:	06 Sep 2022 12:38
Last Modified:	06 Sep 2022 12:38
URI:	http://eprints.bice.rm.cnr.it/id/eprint/22004

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