The Decay mode of Higgs into four leptons allows for accurate parameter reconstruction and is thus a useful channel to research. The study attempted to increase the number of four electron events that pass selection cuts, without greatly increasing the amount of background noise, by varying the transverse momentum, invariant mass of the subleading electrons, and electron identification. With the application of a boosted decision tree targeting the ZZ* noise, the study found that the optimal configuration was a loose electron identification with the invariant mass greater than 10 GeV and the transverse momentum greater than 7 GeV.
Pazar, Beni J.
"Increasing the acceptance rate of H-> 4e- Run 1 events by relaxing the applied cuts,"
Macalester Journal of Physics and Astronomy: Vol. 4
, Article 7.
Available at: http://digitalcommons.macalester.edu/mjpa/vol4/iss1/7