Zobrazeno 1 - 10
of 450
pro vyhledávání: '"Dark radiation"'
Publikováno v:
Symmetry, Vol 16, Iss 1, p 53 (2023)
We use Big Bang Nucleosynthesis (BBN) to probe Beyond Standard Model physics in the neutrino sector. Recently, the abundances of primordially produced light elements D and He-4 were determined from observations with better accuracy. The good agreemen
Externí odkaz:
https://doaj.org/article/ea38a427b2be413591e4ef5803884f8c
Autor:
Francesco D’Eramo
Publikováno v:
Letters in High Energy Physics, Vol 2022, Iss 1 (2023)
Scattering and decay processes of thermal bath particles in the early universe can dump relativistic axions in the primordial plasma. If produced with a significant abundance, their presence can leave observable signatures in cosmological observables
Externí odkaz:
https://doaj.org/article/62dd6ef32ca04755b4d75fa8606003bd
Autor:
Maria Archidiacono, Stefano Gariazzo
Publikováno v:
Universe, Vol 8, Iss 3, p 175 (2022)
The presence of light sterile neutrinos is one of the unanswered questions of particle physics. The cosmological counterpart is represented by dark radiation, i.e., any form of radiation present in the early Universe besides photons and standard (act
Externí odkaz:
https://doaj.org/article/0b4d0c679f644de28d4ad02f1ff1bc23
Akademický článek
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Autor:
Francesca V. Day
Publikováno v:
Physics Letters B, Vol 753, Iss C, Pp 600-611 (2016)
Many extensions of the Standard Model include axions or axion-like particles (ALPs). Here we study ALP to photon conversion in the magnetic field of the Milky Way and starburst galaxies. By modelling the effects of the coherent and random magnetic fi
Externí odkaz:
https://doaj.org/article/a3bcc43933ec41d4a5cf70911c1e4014
Publikováno v:
Frontiers in Physics, Vol 5 (2017)
We discuss radiative seesaw models, in which an exact Z2×Z2′ symmetry is imposed. Due to the exact Z2×Z2′ symmetry, neutrino masses are generated at a two-loop level and at least two extra stable electrically neutral particles are predicted. We
Externí odkaz:
https://doaj.org/article/6928696738b5404fbc1486270f07938c
Publikováno v:
Astronomische Nachrichten. 342:81-88
The cosmological implications of the Covariant Canonical Gauge Theory of Gravity (CCGG) are investigated. CCGG is a Palatini theory derived from first principles using the canonical transformation formalism in the covariant Hamiltonian formulation. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2155f789877fa0d497bc589473d83c6d
https://doi.org/10.1002/asna.202113885
https://doi.org/10.1002/asna.202113885
Akademický článek
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Publikováno v:
Physics Letters B, Vol 823, Iss, Pp 136722-(2021)
Physics Letters
Physics Letters
Primordial black holes (PBHs) from the early Universe have been connected with the nature of dark matter and can significantly affect cosmological history. We show that coincidence dark radiation and density fluctuation gravitational wave signatures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b61d2fb76f134450010b58f7ad9c2c17
http://www.sciencedirect.com/science/article/pii/S0370269321006626
http://www.sciencedirect.com/science/article/pii/S0370269321006626
Autor:
Alexandre Arbey, Jérémy Auffinger
Publikováno v:
European Physical Journal
European Physical Journal C: Particles and Fields, Vol 81, Iss 10, Pp 1-14 (2021)
Eur.Phys.J.C
Eur.Phys.J.C, 2021, 81, pp.910. ⟨10.1140/epjc/s10052-021-09702-8⟩
European Physical Journal C: Particles and Fields, Vol 81, Iss 10, Pp 1-14 (2021)
Eur.Phys.J.C
Eur.Phys.J.C, 2021, 81, pp.910. ⟨10.1140/epjc/s10052-021-09702-8⟩
We present the new version v2.0 of the public code BlackHawk designed to compute the Hawking radiation of black holes, with both primary and hadronized spectra. This new version aims at opening an avenue toward physics beyond the Standard Model (BSM)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa15f8663f9c14b511947bff05886433
http://repo.scoap3.org/api
http://repo.scoap3.org/api