Search for disappearing tracks in proton-proton collisions at $\sqrt{s} =$ 13 TeV
CMS Collaboration Albert M Sirunyan (Yerevan Phys. Inst.) et al. "Search for disappearing tracks in proton-proton collisions at $\sqrt{s} =$ 13 TeV " Phys.Lett.B 806 (2020) 135502