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 supersymmetry 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 axionlike particles.
- Publication:
-
Physical Review Letters
- Pub Date:
- October 2017
- DOI:
- 10.1103/PhysRevLett.119.141804
- arXiv:
- arXiv:1702.02152
- Bibcode:
- 2017PhRvL.119n1804B
- Keywords:
-
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment;
- High Energy Physics - Theory
- E-Print:
- 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