Controlling ISR in sparticle mass reconstruction

Understand

Use of inclusive MT2 distribution for sparticle mass determination is discussed.

• We define new parameters MT2(min) and MT2mod(min), which are a kind of minimum of sub-systerm MT2 values.
• Their endpoints are less affected by initial state radiations.
• We demonstrate that both masses of squark and gluino can be extracted from the endpoints of the distributions in the wide region of parameter space expected in CMSSM.