English

`Stop' that ambulance! New physics at the LHC?

High Energy Physics - Phenomenology 2015-06-19 v3 High Energy Physics - Theory

Abstract

A number of LHC searches now display intriguing excesses. Most prominently, the measurement of the W+WW^+W^- cross-section has been consistently 20%\sim 20\% higher than the theoretical prediction across both ATLAS and CMS for both 7 and 8 TeV runs. More recently, supersymmetric searches for final states containing two or three leptons have also seen more events than predicted in certain signal regions. We show that a supersymmetric model containing a light stop, winos and binos can consistently match the data. We perform a fit to all measurements and searches that may be sensitive to our model and find a reduction in the log-likelihood of 15.4 compared to the Standard Model which corresponds to 3.5-σ\sigma once the extra degrees of freedom in the fit are considered.

Keywords

Cite

@article{arxiv.1406.0858,
  title  = {`Stop' that ambulance! New physics at the LHC?},
  author = {Jong Soo Kim and Krzysztof Rolbiecki and Kazuki Sakurai and Jamie Tattersall},
  journal= {arXiv preprint arXiv:1406.0858},
  year   = {2015}
}

Comments

19 pages, 5 Figures. v3: minor corrections, to appear at JHEP

R2 v1 2026-06-22T04:29:53.092Z