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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

MeV dark matter complementarity and the dark photon portal

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Autor(es):
Dutra, Maira [1] ; Lindner, Manfred [2] ; Profumo, Stefano [3, 4] ; Queiroz, Farinaldo S. [5] ; Rodejohann, Werner [2] ; Siqueira, Clarissa [6, 2]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Paris Saclay 11, CNRS, Lab Phys Theor, UMR 8627, F-91405 Orsay - France
[2] Max Planck Inst Kernphys, Postfach 103980, D-69029 Heidelberg - Germany
[3] Univ Calif Santa Cruz, Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 - USA
[4] Univ Calif Santa Cruz, Dept Phys, Santa Cruz, CA 95064 - USA
[5] Univ Fed Rio Grande do Norte, Int Inst Phys, Campus Univ, BR-59078970 Natal, RN - Brazil
[6] Univ Fed Paraiba, Dept Fis, Caixa Postal 5008, BR-58051970 Joao Pessoa, Paraiba - Brazil
Número total de Afiliações: 6
Tipo de documento: Artigo Científico
Fonte: Journal of Cosmology and Astroparticle Physics; n. 3 MAR 2018.
Citações Web of Science: 10
Resumo

We discuss the phenomenology of an MeV-scale Dirac fermion coupled to the Standard Model through a dark photon with kinetic mixing with the electromagnetic field. We compute the dark matter relic density and explore the interplay of direct detection and accelerator searches for dark photons. We show that precise measurements of the temperature and polarization power spectra of the Cosmic Microwave Background Radiation lead to stringent constraints, leaving a small window for the thermal production of this MeV dark matter candidate. The forthcoming MeV gamma-ray telescope e-ASTROGAM will offer important and complementary opportunities to discover dark matter particles with masses below similar to 10 MeV. Lastly, we discuss how a late-time inflation episode and freeze-in production could conspire to yield the correct relic density while being consistent with existing and future constraints. (AU)

Processo FAPESP: 16/01343-7 - ICTP Instituto Sul-Americano para Física Fundamental: um centro regional para física teórica
Beneficiário:Nathan Jacob Berkovits
Linha de fomento: Auxílio à Pesquisa - Temático