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Alec Aivazis edited background.tex
over 9 years ago
Commit id: dbf512fc80ab2346ceb7a2676abfd1224adbfe2d
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The second biggest background is a two step decay in which a $t$ and a $\overline{t}$ which both decay to the corresponding b-quark and a W-boson which subsequently decays to a muon and its neutrino (to be reffered to as $t\overline{t}$):
$t \overline{t} \rightarrow W^+ W^- b \overline{b} \rightarrow \mu^+ \mu^- b \overline{b} \nu
\overline{\nu}$ \overline{\nu} *$
While these two contribute the most to the background signal, there are 6 other proceses which have signatures that can resemble the target decay after taking into consideration fakes and mismeasurements. Those processes are:
\begin{equation}
\begin{split}
WZ & \rightarrow 2 \ell 2 q
\\ *\\
& \rightarrow 3 \ell \nu
\\ *\\
WW & \rightarrow 2 \ell 2 \nu
\\ *\\
ZZ & \rightarrow 4 \ell \\
& \rightarrow 2 \ell 2 \nu \\
& \rightarrow 2 \ell 2 q
\end{split}
\end{equation}
Of these 8 backgrounds,
list backgrounds
there are 8 processes that produce the target signature