Resum
We obtain new stringent constraints on a light spinless particle φ coupled only to photons at low energies, considering its effects on the extragalactic photon background, the black-body spectrum of the cosmic microwave background radiation and the cosmological abundance of deuterium.
Idioma original | Anglès |
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Pàgines (de-a) | 7967-7969 |
Revista | Physical Review D - Particles, Fields, Gravitation and Cosmology |
Volum | 55 |
Número | 12 |
Estat de la publicació | Publicada - 15 de juny 1997 |