The minimal stealth boson: models and benchmarks Aguilar Saavedra, Juan Antonio Joaquim, F. R. Beyond Standard Model Gauge Symmetry Stealth bosons are relatively light boosted particles with a cascade decay S → A1A2 → qqqq, reconstructed as a single fat jet. In this work, we establish minimal extensions of the Standard Model that allow for such processes. Namely, we consider models containing a new (leptophobic) neutral gauge boson Z' and two scalar singlets, plus extra matter required to cancel the U(1)' anomalies. Our analysis shows that, depending on the model and benchmark scenario, the expected statistical significance of stealth boson signals (yet uncovered by current searches at the Large Hadron Collider) is up to nine times larger than for the most sensitive of the standard leptophobic Z' signals such as dijets, tt pairs or dibosons. These results provide strong motivation for model-independent searches that cover these complex signals. 2024-10-09T07:33:15Z 2024-10-09T07:33:15Z 2019-10-23 journal article Aguilar-Saavedra, J., Joaquim, F. The minimal stealth boson: models and benchmarks. J. High Energ. Phys. 2019, 237 (2019). https://doi.org/10.1007/JHEP10(2019)237 https://hdl.handle.net/10481/95714 10.1007/JHEP10(2019)237 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional MDPI