Bi-Event Subtraction Technique at Hadron Colliders

Understand

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.