Sharpening $m_{T2}$ cusps: the mass determination of semi-invisibly decaying particles from a resonance

Lucian A. Harland-Lang, Chun-Hay Kom, Kazuki Sakurai +1

We revisit mass determination techniques for the minimum symmetric event topology, namely $X$ pair production followed by $X\to \ell N$, where $X$ and $N$ are unknown particles wi…