Archive for Large Hardon Collider

On the Evidence for Supersymmetry from CMS…

Posted in The Universe and Stuff with tags , , , , on October 27, 2025 by telescoper

Every now and again I look at the latest particle physics literature on arXiv to see what’s going on. The other day I saw a preprint there which gives a review of the latest results on supersymmetry from the Compact Muon Solenoid (CMS) experiment at the Large Hadron Collider at CERN. I should explain that, in experimental particle physics, “compact” means “fucking enormous”.

Anyway, the abstract of the paper reads:

The Run 2 data-taking period of the CERN Large Hadron Collider during years 2015-2018 provided about 140 fb-1 of proton-proton collisions at 13 TeV, offering an unprecedented opportunity to explore supersymmetry (SUSY) across a wide range of experimental signatures. CMS responded with a broad and diverse search program, carrying out dozens of analyses that probed a multitude of final states and systematically explored different regions of the SUSY parameter space. No significant deviations from standard model predictions were observed, and the results were used for constraining the SUSY landscape. In this review, I provide a comprehensive account of the CMS Run 2 SUSY program, covering its strategy, targeted models, and analysis methods. I then present the full set of searches and conclude with their combined impact through simplified model and phenomenological MSSM interpretations.

arXiv:2510.17971

Here is one of the pretty pictures from the review. This one shows the constraints on the masses of any supersymmetric counterparts of the electroweak gauge bosons.

To summarize the evidence for supersymmetry from CMS, there is none, nil, nought, nada, zero, zilch, zip, sweet Fanny Adams, bugger-all and diddly-squat. I hope this clarifies the situation.