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arXiv · 1702.02152

R-axion at colliders

Brando Bellazzini·Alberto Mariotti·Diego Redigolo·Filippo Sala·Javi Serra
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Abstract

We study the effective theory of a generic class of hidden sectors where supersymmetry is broken together with an approximate R-symmetry at low energy. The light spectrum contains the gravitino and the pseudo-Nambu-Goldstone boson of the R-symmetry, the R-axion. We derive new model-independent constraints on the R-axion decay constant for R-axion masses ranging from GeV to TeV, which are of relevance for hadron colliders, lepton colliders and B-factories. The current bounds allow for the exciting possibility that the first sign of SUSY will be the R-axion. We point out its most distinctive signals, providing a new experimental handle on the properties of the hidden sector and a solid motivation for searches of axion-like particles.

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Brando Bellazzini, Alberto Mariotti, Diego Redigolo, Filippo Sala, Javi Serra. 2017-09-27. R-axion at colliders. https://doi.org/10.1103/physrevlett.119.141804

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