Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-04-13
Phys.Lett.B703:475-478,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 4 figures
Scientific paper
10.1016/j.physletb.2011.08.029
We propose the Bi-Event Subtraction Technique (BEST) as a method of modeling and subtracting large portions of the combinatoric background during reconstruction of particle decay chains at hadron colliders. The combinatoric background arises when it is impossible to know experimentally which observed particles come from the decay chain of interest. The background shape can be modeled by combining observed particles from different collision events and be subtracted away, greatly reducing the overall background. This idea has been demonstrated in various experiments in the past. We generalize it by showing how to apply BEST multiple times in a row to fully reconstruct a cascade decay. We show the power of BEST with two simulated examples of its application towards reconstruction of the top quark and a supersymmetric decay chain at the Large Hadron Collider.
Dutta Bhaskar
Kamon Teruki
Kolev Nikolay
Krislock Abram
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