R-axion at colliders
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.
Keywords
Cite
@article{arxiv.1702.02152,
title = {R-axion at colliders},
author = {Brando Bellazzini and Alberto Mariotti and Diego Redigolo and Filippo Sala and Javi Serra},
journal= {arXiv preprint arXiv:1702.02152},
year = {2017}
}
Comments
7 pages, 2 figures. v2: typos fixed, appendix added. v3: R-axion as motivation for ALP phenomenological studies made explicit, minor clarifications. Accepted for publication on PRL