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- % see the macros.tex file for definitions
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- % title slide definition
- \title{MVA selection for $\tau \to 3\mu$}
- %\subtitle{a bias report}
- \author{ Marcin Chrz\k{a}szcz$^{1,2}$}
- \institute[UTH, IFJ]
- {
- %\begin{tiny}
- $ ^1$ University of Zurich , $ ^2$ Institute of Nuclear Physics, Krakow,
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- \date{ \today}
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- %--------------------------------------------------------------------
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- %-------------------------------------------------------------------
- % Introduction
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- \title{Update on analysis}
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- \section{Blending - THE END}
- \begin{frame}\frametitle{Where did we end last year}
- {~}\\
- \begin{itemize}
- \item We decided to use Blending technique with MatrixNet.
- \item Jon updated the mixing numbers $\rightarrow$ Need to retrain everything and hope things are status quo.
- \item People thanks to $\PBs \to \mu \mu$ will ask about mass correlation $\rightarrow$ Need to check to shut them up. Big big surprise.
- \end{itemize}
-
-
-
- \textref {M.Chrz\k{a}szcz 2013}
-
- \end{frame}
- \begin{frame}\frametitle{Status quo}
- {~}\\
- \begin{columns}
- \column{2in}
- \begin{itemize}
- \item I was to lazy to retrain all TMVA stuff.
- \item So just compared: GeoMVA(we have it for free), MN standalone, Blending.
- \item Again Blending wins.
- \end{itemize}
- \column{3in}
- \center \includegraphics[scale=0.28]{final2/ROC_2012.png}
-
-
- \end{columns}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
- \begin{frame}\frametitle{Status quo}
- {~}\\
- \begin{columns}
- \column{2in}
- \begin{itemize}
- \item I was to lazy to retrain all TMVA stuff.
- \item So just compared: GeoMVA(we have it for free), MN standalone, Blending.
- \item Again Blending wins. $\rightarrow$ I am happy.
- \end{itemize}
- \column{3in}
- \center \includegraphics[scale=0.28]{final2/ROC_2012.png}
-
-
- \end{columns}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
- \begin{frame}\frametitle{Status quo}
- {~}\\
- \begin{columns}
- \column{2in}
- \begin{itemize}
- \item For sanity check I also have looked into 2011 data.
- \item Result stays the same.
- \end{itemize}
- \column{3in}
- \center \includegraphics[scale=0.28]{final2/ROC_2011.png}
-
-
- \end{columns}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
- \begin{frame}\frametitle{How does MN look like.}
- {~}\\
- \begin{columns}
- \column{2in}
- \begin{itemize}
- \item So MN is Gradient BDT. (name in the ntuple: MN\_BLEND)
- \item Applied transformation to make flat signal distribution. (name in the ntuple: MN\_BLEND\_FLAT).
- \end{itemize}
- \center \includegraphics[scale=0.19]{final2/bckmn.png}\\
-
- \column{3in}
- \center \includegraphics[scale=0.2]{final2/MN.png}\\
- \center \includegraphics[scale=0.2]{final2/MN_FLAT.png}
-
- \end{columns}
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-
-
-
-
-
- \begin{frame}\frametitle{Mass correlation - Sit down, this is hardcore}
- {~}\\
- \begin{columns}
- \column{2in}
- \begin{itemize}
- \item So lets check the correlation for my blending using MN.
- \item Correlation is flat and arround $3.5\%$. Everything seems to be ok.
- \item Now the scary part. I checked this for GeoMVA.
- \end{itemize}
- \column{3in}
- \center \includegraphics[scale=0.28]{final2/corr_BLend.png}
-
-
- \end{columns}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
-
- \begin{frame}\frametitle{Mass correlation - Sit down, this is hardcore}
- {~}\\
- \begin{columns}
- \column{2in}
- \begin{itemize}
- \item I saw $30\%$ correlation in our previous GEOMVA!
- \item Before I got a heart attack I had thought: Making clarifies flat has to change the correlation value. So GeoMVA was transformed to be flat, for 1:1 comaprison.
- \item Never the less $15\%$ in GeoMVA remains ;(
- \end{itemize}
- \column{3in}
- \center \includegraphics[scale=0.28]{final2/corr_Geo.png}
-
-
- \end{columns}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
-
- \begin{frame}\frametitle{MVA conclusions}
- {~}\\
-
- \begin{itemize}
- \item Blending is the best performing MVA.
- \item Mass correlation is reasonable low.
- \item GeoMVa mystery: Different RECO might have something to do with what we saw. It also could explain why GeoMVA is so efficient now(correlation might make the bck level artificially lower) $\leftarrow$ this idea was after midnight and 3 pines of beer so I might now change my mind.
- \end{itemize}
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
- \section{Binning optimisation}
-
- \begin{frame}\frametitle{Binning}
- {~}\\
-
- \begin{itemize}
- \item Performed binning optimisation(with old trigger strategy and old classifier(before Jons updates)).
- \item All this will be updated of coz with Pauls new results + new clarifies.
- \item For 2012 for binning with eta veto:\\
- PID: 0 0.10 0.42 0.75 0.81 0.86 1.00\\
- BLEND\_FLAT: 0. 0.05 0.38 0.63 0.71 0.82 1.00
- \end{itemize}
-
- \center \includegraphics[scale=0.2]{final2/cl1.png}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
- \begin{frame}\frametitle{Binning - details}
- {~}\\
-
- \begin{itemize}
- \item Binning uses CLs method, not enough time to play with other FOM.
- \item Optimisation requires at least 8 events in the bin.
- \item Minimum bin size is 0.06.
- \item The sieve is 0.01
-
- \end{itemize}
-
- \center \includegraphics[scale=0.2]{final2/cl1.png}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
- \section{$\eta$ background}
- \begin{frame}\frametitle{Binning - details}
- {~}\\
-
- \begin{itemize}
- \item Did all the fits to $\eta$ bck.
- \item Fits are far more stable then last year.
- \item Will try to make a single fit to all bins to reduce the systematics.
- \item All fits are here: \href{http://nz17-p1.ifj.edu.pl/work_public/LHCb/Tau23Mu/Eta_fits/}{LINK}
- \item I was lazy and didn't want to latex thing that will change...
- \item The same with fits with $\eta$ veto....
- \item MC/Data comparison doing Splot: \href{http://nz17-p1.ifj.edu.pl/work_public/LHCb/Tau23Mu/MCDATA/}{LINK}
-
- \end{itemize}
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
- \section{Plan}
- \begin{frame}\frametitle{The Plan}
- {~}\\
-
- \begin{enumerate}
- \item If we want to move with this for Moriond we would need to have a limit soon.
- \item I would propose the attemnt to have on next week a preliminary limit.
- \item What we need:
-
- \end{enumerate}
- \begin{itemize}
- \item $\PDs \to \phi \pi$. Done for 2011 and 2012. Will appear today on my page.
- \item New binning: 6 hours of computing one scenario$\rightarrow$ tmr will have it.
- \item Fits(with $\eta$ veto: Wed).
- \item Calibration: Paul?
- \item Limit(lets aim 2011+2012). I have script from Diego with the combination for $\PBs \to \mu\mu$.
- \item But it is never easy to run those things(2-3 days).
- \item Lets try to make an effort?
- \end{itemize}
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
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-
-
- \end{document}