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Light scalars coupled to photons and non-newtonian forces

Arnaud Dupays, Eduard Masso', Javier Redondo, Carlo Rizzo

hep-pharXiv:hep-ph/0610286

Abstract

A particle ϕ coupling to two photons couples also to charged particles, like protons, through a loop. If the particle is a light scalar this induced coupling to protons leads to non-newtonian forces. We show that the experimental constraints on exotic, fifth-type forces lead to stringent constraints on the ϕγγ coupling.

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