49th SLAC Summer Institute (SSI 2021)

Optimization of sensitivity for the Di-Higgs search in bb¯lνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at s = 13 TeV

Not scheduled

20m

ZOOM videoconf (SLAC)

Speaker

Pratik Kafle (Reed College)

Description

We present a study to optimize the search for the Di-Higgs decay produced from gluon-gluon fusion with $b\overline{b}qql\nu$ as the final state in the ATLAS experiment at the LHC using Monte Carlo simulated sample. A big challenge in observing this event is due to enormous background contamination, the dominant of which is due to the decay of $t\overline{t}$ decay. We use ROOT and its built-in multivariate analysis toolkit (TMVA) to run a sensitivity estimate using the Boosted Decision Tree algorithm to discriminate signal from the $t\overline{t}$ background. The performance of the algorithm to discriminate the background from the signal is based on the Signal significance, which is defined as $S/\sqrt{S+B}$.

Presentation materials

PKafle_SSI.pdf