Light scalars coupled to photons and non-Newtonian forces

Arnaud Dupays, Eduard Massó, Javier Redondo, Carlo Rizzo

Research output: Contribution to journalArticleResearchpeer-review

34 Citations (Scopus)


A particle coupling to two photons couples also radiatively to charged particles, like protons. If the particle is a light scalar, this induced coupling leads to spin-independent non-Newtonian forces. We show that the experimental constraints on exotic, fifth-type forces lead to stringent constraints on the γγ coupling. We discuss the impact on the recent PVLAS results and the role of paraphoton models introduced to solve the PVLAS-CAST puzzle. © 2007 The American Physical Society.
Original languageEnglish
Article number131802
JournalPhysical Review Letters
Issue number13
Publication statusPublished - 27 Mar 2007


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