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\author{ {\fontspec{Trebuchet MS}Marcin Chrz\k{a}szcz} (Universit\"{a}t Z\"{u}rich)}
\institute{UZH}
\title[Thoughts on $R(\Lambda_c^{(\ast)})$]{Thoughts on $R(\Lambda_c^{(\ast)})$}
\date{25 September 2014}


\begin{document}
\tikzstyle{every picture}+=[remember picture]

{
\setbeamertemplate{sidebar right}{\llap{\includegraphics[width=\paperwidth,height=\paperheight]{bubble2}}}
\begin{frame}[c]%{\phantom{title page}} 
\begin{center}
\begin{center}
	\begin{columns}
		\begin{column}{0.75\textwidth}
			\flushright\fontspec{Trebuchet MS}\bfseries \Huge {Thoughts on $R(\Lambda_c^{(\ast)})$}
		\end{column}
                \begin{column}{0.02\textwidth}
                  {~}
                  \end{column}
                \begin{column}{0.23\textwidth}
                 % \hspace*{-1.cm}
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                  \includegraphics[width=0.6\textwidth]{lhcb-logo}
                  \end{column}
	        
	\end{columns}
\end{center}
	\quad
	\vspace{3em}
\begin{columns}
\begin{column}{0.44\textwidth}
\flushright \vspace{-1.8em} {\fontspec{Trebuchet MS} \Large Marcin Chrząszcz\\\vspace{-0.1em}\small \href{mailto:mchrzasz@cern.ch}{mchrzasz@cern.ch}}

\end{column}
\begin{column}{0.53\textwidth}
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\end{column}
\end{columns}

\vspace{1em}
%		\footnotesize\textcolor{gray}{With N. Serra, B. Storaci\\Thanks to the theory support from M. Shaposhnikov, D. Gorbunov}\normalsize\\
\vspace{0.5em}

	\textcolor{normal text.fg!50!Comment}{M.Rotondo, N.Serra, A.Lusiani, A.Lupato, E.Graverini, G.Simi,   \\SL workshop, CERN\\April 29, 2016}
\end{center}
\end{frame}
}

\begin{frame}\frametitle{Disclaimer}
\begin{minipage}{\textwidth}
\ARROW This is not a status update, for this please see Anna's slide on the last SL meeting:\\
\href{https://indico.cern.ch/event/520811/}{\url{https://indico.cern.ch/event/520811/}}\\
\ARROW I want to trigger/focus on the discussion.\\
\ARROW One thing that has been updated is the trigger lines:\\ \textbf{TopoX} $\to$ \textbf{TopoXMu} \\


\end{minipage}
		\vspace*{2.cm}
\end{frame}


\begin{frame}\frametitle{Disclaimer}
\begin{minipage}{\textwidth}
\ARROW This is not a status update, for this please see Anna's slide on the last SL meeting:\\
\href{https://indico.cern.ch/event/520811/}{\url{https://indico.cern.ch/event/520811/}}\\
\ARROW I want to trigger/focus on the discussion.\\
\ARROW One thing that has been updated is the trigger lines:\\ \textbf{TopoX} $\to$ \textbf{TopoXMu}\\
\ARROW This has a rather big impact on the efficiencies:
\begin{center}
\begin{tabular}{|c|c|}
\hline
$\epsilon_{trig(Topo) \vert Sel}$ & $25~\%$ \\
$\epsilon_{trig(TopoMu) \vert Sel}$ & $32~\%$ \\ \hline
\end{tabular}
\end{center}


\end{minipage}
		\vspace*{2.cm}
\end{frame}



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%


\begin{frame}\frametitle{Trigger impact}
\begin{minipage}{\textwidth}
\includegraphics[width=0.45\textwidth]{{images/2625_q2_Lambda_b0_Hlt2SingleMuonDecision_TOS}.png}
\includegraphics[width=0.45\textwidth]{{images/2625_q2_Lambda_b0_Hlt2TopoMu2BodyBBDTDecision_TOS}.png}\\
\includegraphics[width=0.45\textwidth]{{images/2625_q2_Lambda_b0_Hlt2TopoMu3BodyBBDTDecision_TOS}.png}
\includegraphics[width=0.45\textwidth]{{images/2625_q2_Lambda_b0_Hlt2TopoMu4BodyBBDTDecision_TOS}.png}


	\end{minipage}
		\vspace*{2.cm}
\end{frame}
\begin{frame}\frametitle{Trigger impact}
\begin{minipage}{\textwidth}
\includegraphics[width=0.45\textwidth]{{images/2625_MissM2_Lambda_b0_Hlt2SingleMuonDecision_TOS}.png}
\includegraphics[width=0.45\textwidth]{{images/2625_MissM2_Lambda_b0_Hlt2TopoMu2BodyBBDTDecision_TOS}.png}\\
\includegraphics[width=0.45\textwidth]{{images/2625_MissM2_Lambda_b0_Hlt2TopoMu3BodyBBDTDecision_TOS}.png}
\includegraphics[width=0.45\textwidth]{{images/2625_MissM2_Lambda_b0_Hlt2TopoMu4BodyBBDTDecision_TOS}.png}


	\end{minipage}
		\vspace*{2.cm}
\end{frame}



\begin{frame}\frametitle{Thoughts on the trigger}
\begin{minipage}{\textwidth}

\ARROW So at first looks the trigger is also bias for us but doesn't look so bad.\\
\ARROW Lets test this by:


\begin{center}
\includegraphics[width=0.9\textwidth]{images/roc_xbdt.pdf}

\end{center}



	\end{minipage}
		\vspace*{2.cm}
\end{frame}



\begin{frame}\frametitle{Plans, discussion triggers!}
\begin{minipage}{\textwidth}
{~}\\
\ARROW Check that the trigger bias is under control!\\
\ARROW Now about the strategy:
\begin{itemize}
\item Train a MVA to distinguish $\tau$ from $\mu$.
\item A additional BDT to reject the double charm background.
\item 3D fit ala $R(\PDstar)$.
\item Something more that can work and is worth looking at?
\item Isolation variables to fight the charm.
\end{itemize}
\ARROW We want to be responsible: Before we ask for $\mathcal{O}(800)M$ MC events we want to be sure we really need it! $\rightarrow$ currently running TOY MC to estimate the amount needed.\\
\ARROW The analysis will be extended with a $R(\PLambdac)$ state in the final version.\\
\ARROW Strong support from theorists (Danny van Dyk) in calculating the form factors. From preliminary studies it looks like the distributions are not super sensitive to form factors! The strategy will be defined once we know more from them!


	\end{minipage}
		\vspace*{2.cm}
\end{frame}






\backupbegin   

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\end{document}
