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arXiv · 1109.1563

Revisiting Combinatorial Ambiguities at Hadron Colliders with MT2

Philip Baringer·Kyoungchul Kong·Mathew McCaskey·Daniel Noonan
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Abstract

We present a method to resolve combinatorial issues in multi-particle final states at hadron colliders. The use of kinematic variables such as MT2 and invariant mass significantly reduces combinatorial ambiguities in the signal, but at a cost of losing statistics. We illustrate this idea with gluino pair production leading to 4 jets $+\met$ in the final state as well as $t\bar{t}$ production in the dilepton channel. Compared to results in recent studies, our method provides greater efficiency with similar purity

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Philip Baringer, Kyoungchul Kong, Mathew McCaskey, Daniel Noonan. 2011-09-07. Revisiting Combinatorial Ambiguities at Hadron Colliders with MT2. https://doi.org/10.1007/jhep10(2011)101

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