| 26 |
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\mt\ to exceed $M_W$. Backgrounds are estimated from Monte Carlo (MC) simulation, with careful validation |
| 27 |
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and determination of scale factors and corresponding uncertainties based on data control samples. |
| 28 |
|
|
| 29 |
< |
The expected stop quark pair production cross section (see Fig.~\ref{fig:stopxsec}) varies between O(10) pb |
| 30 |
< |
for $m_{\tilde{t}}=200$~GeV and O(0.01) pb for $m_{\tilde{t}}=500$~GeV. The critical challenge of this analysis |
| 29 |
> |
The expected stop quark pair production cross section (see Fig.~\ref{fig:stopxsec}) varies between 18 pb |
| 30 |
> |
for $m_{\tilde{t}}=200$~GeV and 0.09 pb for $m_{\tilde{t}}=500$~GeV\cite{xsec0}. |
| 31 |
> |
The critical challenge of this analysis |
| 32 |
|
is due to the fact that for light stop quarks ($m_{\tilde{t}} \approx m_t$), the production cross section is |
| 33 |
|
large but the kinematic distributions, in particular \mt, are very similar to SM \ttbar\ production. In this regime |
| 34 |
|
it becomes very |
| 38 |
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|
| 39 |
|
\begin{figure}[hbt] |
| 40 |
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\begin{center} |
| 41 |
< |
\includegraphics[width=0.5\linewidth]{plots/total_scale_pdf_LHC-eps-converted-to.pdf} |
| 41 |
> |
% \includegraphics[width=0.5\linewidth]{plots/total_scale_pdf_LHC-eps-converted-to.pdf} |
| 42 |
> |
\includegraphics[width=0.5\linewidth]{plots/stop_cs.png} |
| 43 |
|
\caption{ |
| 44 |
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\label{fig:stopxsec}\protect |
| 45 |
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The stop quark pair production cross section in pb, as a |
| 46 |
< |
function of the stop quark mass. AT SOME POINT WE NEED TO |
| 45 |
< |
GET A FIGURE FOR 8 TEV CM ENERGY.} |
| 46 |
> |
function of the stop quark mass~\cite{xsec}.} |
| 47 |
|
\end{center} |
| 48 |
|
\end{figure} |
| 49 |
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|
