Searching for top SUSY partners at compressed regions

Aug 24, 2015, 3:10 PM


Supersymmetry Phenomenology and Experiment SUSY Expt. and Phenomenology


Haipeng An (Caltech)


Light top superpartners play a key role in stabilizing the electroweak scale in supersymmetric theories. For R-parity conserved supersymmetric theories, traditional searches are not sensitive to the compressed region $m_{\tilde t}\approx m_\chi+m_t$ and $m_{\tilde t} \approx m_\chi + m_W + m_b$, where $\chi$ is the neutralino. In this talk, I will introduce a new observable $R_M$ whose distribution has a peak at these regions. The position of the peak is strongly related to the mass of the top partner. With this property, I will show that a new multi-jets plus missingET analysis can close the gaps at these compressed regions. In particular, using the LHC with a center of mass energy of 13 TeV and a luminosity of 3000 fb$^{-1}$, the gap at $m_{\tilde t}\approx m_\chi+m_t$ can be closed up to $m_{\tilde t} \approx 800$ GeV.

Primary authors

Haipeng An (Caltech) LianTao Wang (University of Chicago)

Presentation materials