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Presentations / Review_LHCb / Kaon_taggers / mchrzasz.tex
@mchrzasz mchrzasz on 10 Dec 2015 11 KB update
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\author{ {\fontspec{Trebuchet MS}Marcin Chrz\k{a}szcz} (Universit\"{a}t Z\"{u}rich, IFJ PAN)}
\institute{UZH}
\title[Review Committee report]{Review Committee report}
\date{13 November 2015}


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			\flushright\fontspec{Trebuchet MS}\bfseries \Huge {Review Committee report}
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                  {~}
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	\quad
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\flushright \vspace{-1.8em} {\fontspec{Trebuchet MS} \Large Marcin ChrzÄ…szcz\\\vspace{-0.1em}\small \href{mailto:mchrzasz@cern.ch}{mchrzasz@cern.ch}}

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\vspace{1em}
On behalf of the Review Committee:\\ \textbf{Marc Grabalosa} (chair),  \textbf{David Ward} (EB)

\vspace{1em}
		\footnotesize\textcolor{gray}{Universit\"{a}t Z\"{u}rich, \\ Institute of Nuclear Physics, Polish Academy of Science}\normalsize\\
\vspace{0.5em}

	\textcolor{normal text.fg!50!Comment}{November 13, 2015}
\end{center}
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\begin{frame}{Analysis details}
	\begin{minipage}{\textwidth}
\begin{itemize}
\item \textbf{Analysis:} Neural-network-based same side kaon tagging algorithm calibrated with $\PBs \to \PD^- \Ppi^{+}$ and $\PBs^{\ast \ast}(5840) \to \PB^+ \PK^-$ decays
\item \textbf{Contact authors}: Mirco Dorigo, Stephanie Hansmann-Menzemer, Marcello Rotondo.
\item \textbf{WG Aproval}: 18-Jun-2015
\item \textbf{Data set}: $3~\rm fb^{-1}$
\item \textbf{Twiki}: \href{https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/NNetKaonTaggers}{https://twiki.cern.ch/twiki/bin/view/LHCbPhysics/NNetKaonTaggers}
\end{itemize}
A bit statistics:
\begin{itemize}
\item The paper consists of two analysis notes: \texttt{LHCb-ANA-2014-003} and \texttt{LHCb-ANA-2014-089}.
\item There have been 4 versions of the first one and 5 of the second one.
\end{itemize}

	\end{minipage}

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\begin{frame}{Motivation}
	\begin{minipage}{\textwidth}
\begin{columns}
\column{2in}
\begin{itemize}
\item Tagging at a hadron collider is far more challenging then in B-factories.
\item Analysis aims at developing a NN algorithm that can be used to determine the flavour of a $\PB$ meson.
\item Analysis exploits both Same Side (SS) and Opposite Side (OS) taggers.
\end{itemize}

\column{3in}
\includegraphics[width=0.95\textwidth]{images/tag.png}


\end{columns}

	\end{minipage}

\end{frame}





\begin{frame}{\texttt{LHCb-ANA-2014-089}, $\PBs^{\ast \ast}(5840) \to \PB^+ \PK^-$}
	\begin{minipage}{\textwidth}
\begin{columns}
\column{2.3in}
\begin{itemize}
\item Analysis in very good shape!
\item Additional cross-checks suggested:
\begin{itemize}
\item Comparison 2011 vs 2012
\item Side-bands comparison.
\item Used bootstraps to check sFit errors.
\end{itemize}
\item We appreciate that the analysis used two methods from the begging which are completely consistent.
\end{itemize}

\column{2.7in}

\includegraphics[width=0.95\textwidth]{images/const.png}

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	\end{minipage}

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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5

\begin{frame}{\texttt{LHCb-ANA-2014-005}, $\PBs \to \PD^- \Ppi^{+}$}
	\begin{minipage}{\textwidth}

\begin{itemize}
\item Analysis mostly relied on Sfit.
\item Proponents did not want to cross check sFit against cFit arguing that the cross check was performed last year.
\item In addition the results were cross checked with the bootstrap technique and found to be in perfect agreement.

\end{itemize}


	\end{minipage}




\end{frame}

\begin{frame}{Conclusions}
	\begin{minipage}{\textwidth}



\begin{large}
\begin{itemize}
\item We recommend that analysis is approved to go to paper.
\item Thanks to the proponents for an interesting and productive review 
\end{itemize}
\end{large}



	\end{minipage}


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