Light scalars coupled to photons and non-newtonian forces
Arnaud Dupays, Eduard Masso', Javier Redondo, Carlo Rizzo
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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