1 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
2 |
\section{Introduction}\label{section:Intro}
|
3 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
4 |
This note describes a search for $H \rightarrow ZZ^{*}$ in the 4-lepton channel with $4.7~\rm{fb^{-1}}$. The primary differences between this analysis and the current baseline~\cite{baseline} are :
|
5 |
|
6 |
\begin{itemize}
|
7 |
|
8 |
\item {\bf MVA Electron Identification :} Electrons are identified using a Boosted Decision Tree discriminant trained on data. Identification requirements are looser for electron canidates used in the reconstruction of the on-shell $Z$.
|
9 |
|
10 |
\item {\bf 2D Signal Extraction :} We include angular information and the mass of the second, potentially off-shell $Z$ in the signal extraction fit via an MVA discriminant.
|
11 |
|
12 |
\item {\bf Isolation :} We apply PF isolation criteria on individual leptons.
|
13 |
|
14 |
\item {\bf Treatment of Fake/Instrumental Backgrounds :} We produce a combined estimate of light and heavy flavor backgrounds using the ``fakeable object'' technique. We assess the performance of this method in several control regions.
|
15 |
|
16 |
\end{itemize}
|
17 |
|
18 |
These changes result in the selection of {\bf $+13/-20 = 7$ } events with respect to the baseline analysis. We discuss these events in detail in Section~\ref{sec:Results}. Our observed limits are comparable to those of~\cite{baseline}.
|
19 |
|
20 |
|
21 |
|