New constraints on a light spinless particle coupled to photons

Eduard Massó, Ramon Toldrà

Research output: Contribution to journalArticleResearchpeer-review

68 Citations (Scopus)

Abstract

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.
Original languageEnglish
Pages (from-to)7967-7969
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume55
Issue number12
Publication statusPublished - 15 Jun 1997

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