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\author{ {\fontspec{Trebuchet MS}Marcin Chrz\k{a}szcz} (Universit\"{a}t Z\"{u}rich)}
\institute{UZH}
\title[$\PBzero \to \PKstar \Pmuon \APmuon$ MC Filter]{$\PBzero \to \PKstar \Pmuon \APmuon$ MC Filter}
\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 {$\PBzero \to \PKstar \Pmuon \APmuon$\\ MC Filter}
		\end{column}
                \begin{column}{0.02\textwidth}
                  {~}
                  \end{column}
                \begin{column}{0.23\textwidth}
                 % \hspace*{-1.cm}
                  \vspace*{-3mm}
                  \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}\\ \Large Thomas Blake \\\vspace{-0.1em}\small \href{mailto:thomas.blake@cern.ch}{thomas.blake@cern.ch} }

\end{column}
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\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}{$\PBzero \to \PKstar \Pmuon \APmuon$ meeting, CERN\\October 10, 2016}
\end{center}
\end{frame}
}


\begin{frame}[c]{A glimpse in the Run1 analysis}

	\begin{minipage}{\textwidth}
\ARROW In the Run1 we have asked for a filtered MC to correct for detector acceptance.\\
\ARROW Asked for $5.5M$ events (after stripping in DST), which means we generated around $110M$ events. \\
\ARROW After our full selection we ended up with with only $1.4M$ events.\\
\\{~}\\{~}
\begin{alertblock}{Warning!}
The stripping line has a PID cut inside: ${\rm PID_{\mu}}>-3$.\\
This essentially means we model that efficiency from MC.
\end{alertblock}



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



\begin{frame}[c]{Run2 options}
	\begin{minipage}{\textwidth}


\begin{enumerate}
\item Repeat what we did in Run1 and keep the PID cuts.
\item Filter on stripping removing the PID cut.
\item Filter on MC truth: 
\begin{itemize}
\item 4 charge tracks on $\rm{StdAllNoPiDPions/Kaons/Muons}$
\item And truth matched the decay channel: $\rm{mcMatch( '[ B0 => K*(892)0 mu+ mu- ]CC}')$
\end{itemize}
\end{enumerate}

\begin{exampleblock}{Why MCTruth?}
\ARROWR We are using a very old stripping line that for sure can be (and should be) optimized for the final analysis of Run2!\\
\ARROWR Producing an MCTRUTH match sample would allow the sample to be reused for future analysis even if the stripping line will change!
\end{exampleblock}

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



\begin{frame}[c]{Retentions}
	\begin{minipage}{\textwidth}

\ARROW To study the solution I have used 2012 Physics MC.\\
\ARROW I have taken 17.250 simulated events.\\
\ARROW Here is the results:\\{~}\\
\begin{tabular}{|c|c|c|c|}
\hline 
Type & Filter retention & Events in the ntuple & Truth Matched \\ \hline
Strip & $3447~(20~\%)$ & $4975$ & $1648$ \\
Strip no PID$_{\mu}$ & $3504~(20.3~\%)$ & $5176$ & $1660$ \\
MCTruth & $5009~(29~\%)$ & $4456$ & $1660$ \\
\hline
\end{tabular}
{~}\\
\ARROW Now I have cross check this running the same algorithms on stripped and non stripped MC always getting the same numbers.\\
\ARROW For speed purpose I have put a cut on the $m_{\PKstar}<1300~\rm MeV$ (can be adjusted if needed).\\
\ARROW Other option to consider is to remove \texttt{ISMUON} form stripping to get all efficiencies from \texttt{PIDCalib}.



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


\begin{frame}[c]{Plans}
	\begin{minipage}{\textwidth}

\ARROW With Tom we feel that it would be best to ask for $200M$ generated events. \\
\ARROW Also we noticed that we have $50M$ events of some old MC10 (Stripping 12) MC, which we propose to delete.\\
\ARROW For PPG: The $R(\PDstar)$ have already got green light for more then $1000M$ generated events, so we getting the $200M$ should not be a problem. \\
\ARROW To discuss: Do we want a flat $m(K\pi)$ sample or we can keep the $\PKstar$?


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



\begin{frame}[c]{Plans 2}
	\begin{minipage}{\textwidth}
\ARROW Besides the normal $\PB \to \PKstar \Pmu \Pmu$ PHSP we should ask for other MC channels.\\
\ARROW I proposed to scale the old numbers by factor: $\frac{5}{3}$.
{~}\\
\begin{small}

\begin{tabular}{lrrr}\hline                                                                                                                                                                                                                   
Decay & DecFile event type & N. of events & N. of events Run2\\ \hline\hline                                                                                                                                                                               
$\PB \to \PKstar \PJpsi$ (physics) & {\tt 11144001} & 2M & 3.5M \\                                                                                                                                                                             
$\PB \to \PKstar \PJpsi$ (PHSP?) & {\tt xxxxxxxx} & 0 & 3.5M \\                                                                                                                                                                             
 $\PB \to \PKstar \mu \mu$ (physics)                & {\tt 11114001} & 1M & 1.5M\\                                                                                                                                                                             
$\PLambdab \to \PLambda(1530)\mu\mu$          & {\tt 15114000} & 1M & 1.5M\\                                                                                                                                                                             
$\PLambdab \to p K \mu\mu$              & {\tt 15114011} & 2M & 3.5M\\                                                                                                                                                                             
$\PBs \to \phi\mu\mu$              & {\tt 13114002} & 0.6M & 1M\\                                                                                                                                                                           
$\PB_u \to  \PK \mu\mu$               & {\tt 12113001} & 1M & 1.5M\\\hline                                                                                                                                                                       
\hline\end{tabular} 
\end{small}

\ARROW This would be unfiltered production and this MC will be needed for other analysis as well.\\
\ARROW Do we want to simulate a flat $q^2$ in the $\PB \to \PKstar \Pmu \Pmu$?\\
\ARROW Do we want to have a flat $\PK \Ppi$ mass distribution in the simulation?

	\end{minipage}
		\vspace*{2.cm}
\end{frame}
\begin{frame}
\begin{center}
\begin{Huge}
This is not related to MC requests.
\end{Huge}
\end{center}


\end{frame}


\begin{frame}\frametitle{MCmatching studies.}
\ARROW Let's look how the candidates that have been matched by: $\rm{mcMatch( '[ B0 => K*(892)0 mu+ mu- ]CC}')$ look like:

\begin{center}
\includegraphics[angle=-90,width=0.5\textwidth]{{images/BKGCAT_mctruthmatched}.pdf}
{~}\\


\end{center}
\ARROW \texttt{BKGCAT==10} is the pure signal. The mcMatch is not changing anything in that number of entries.\\
\ARROW \texttt{BKGCAT==30} is the K=$\PK \leftrightarrows \pi$ swaps. This goes away with some PID selection

\end{frame}

\begin{frame}\frametitle{MCmatching studies.}

\ARROW Now all \texttt{BKGCAT==10} have true mcMatch:
\begin{center}
\includegraphics[angle=-90,width=0.4\textwidth]{{images/BKGCAT10}.pdf}

\end{center}



\ARROW How does \texttt{BKKCAT==50,40} (missID +FSR, FSR)look like:

\includegraphics[angle=-90,width=0.45\textwidth]{{images/BKGCAT40MCMatch}.pdf}
\includegraphics[angle=-90,width=0.45\textwidth]{{images/BKGCAT50MCMatch}.pdf}\\
\ARROW We need to consider which \texttt{BKGCAT} we should use for the analysis.

\end{frame}

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