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-
- % see the macros.tex file for definitions
- \include{macros }
-
- % title slide definition
- \title{Updates on activities.}
- %\subtitle{a bias report}
- \author{ Marcin Chrz\k{a}szcz$^{1,2}$ , Nicola Serra$^{1}$ }
- \institute[UTH, IFJ]
- {
- %\begin{tiny}
- $ ^1$ University of Zurich , $ ^2$ Institute of Nuclear Physics, Krakow,
- %\end{tiny}smallsmall
- }
-
-
- \date{ \begin{small} $16^{th}$ July 2013 \end{small}}
-
- %--------------------------------------------------------------------
- % Introduction
- %--------------------------------------------------------------------
-
- \begin{document}
-
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- % OUTLINE
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- \section[Outline]{}
- \begin{frame}
- \tableofcontents
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- %-------------------------------------------------------------------
- % Introduction
- %-------------------------------------------------------------------
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- \title{Update on analysis}
-
-
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%2>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
- \section{Inflaton analysis}
- \subsection{Reminder}
- \begin{frame}\frametitle{Reminder}
- We observed strange FD distributions in MC:
- \begin{columns}
- \column{2.5in}
- Reconstructed FD
- \includegraphics[scale=0.35]{pic2/FD_XI_reco.png}
-
-
- \column{2.5in}
- Reconstructed life time
- \includegraphics[scale=0.35]{pic2/time_XI_true.png}
-
-
- \end{columns}
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
- %\section{Work done so far}
-
-
-
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%55
- \begin{frame}
- \subsection{Generator Checks}
-
- \frametitle{Work done so far}
- {~}
- Cross check:
- \begin{itemize}
- \item Let's simulate decay using generator level.
- \item Same seeds, configuration, etc.
-
- \end{itemize}
-
- \includegraphics[scale=0.25]{pic2/FD_mctrue.png}\\
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
- \begin{frame}
- \subsection{Let's look into data}
-
- \frametitle{First look into data}
- {~}
- \begin{columns}
- \column{2.5in}
- UpStream
- \includegraphics[scale=0.25]{pic2/normall_mass.png}
-
-
- \column{2.5in}
- DownStream
- \includegraphics[scale=0.25]{pic2/down_mass.png}
-
-
- \end{columns}
- Blinded: $[5200,5350]$
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
-
-
-
- \begin{frame}
- \frametitle{What do we have in the Inflaton mass; UPSTREAM}
- {~}
-
-
- \includegraphics[scale=0.35]{pic2/inflaton_mass.png}
-
-
- Let's look closer.
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
-
- \begin{frame}
- \frametitle{$K_s$}
- {~}
-
-
-
- \includegraphics[scale=0.4]{pic2/KS_mass.png}
-
-
-
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
-
- \begin{frame}
- \frametitle{$J/ \Psi$}
- {~}
-
-
-
- \includegraphics[scale=0.4]{pic2/jpsi_mass.png}
-
-
-
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
- \begin{frame}
- \frametitle{$\Psi(2S)$}
- {~}
-
-
-
- \includegraphics[scale=0.4]{pic2/psi2_mass.png}
-
-
-
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
- \begin{frame}
- \frametitle{What do we have in the Inflaton mass; DOWNSTREAM}
- {~}
-
-
- \includegraphics[scale=0.35]{pic2/inflaton_mass_d.png}
-
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
- \begin{frame}
- \frametitle{$K_s$}
- {~}
-
-
- \includegraphics[scale=0.35]{pic2/KS_mass_d.png}
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
- \subsection{$K_s$ FD}
- \begin{frame}
- \frametitle{$K_s$ FD}
- {~}
-
-
- \includegraphics[scale=0.35]{pic2/KS_flight_distance.png}
-
-
- looks normal \Simley{-1}
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
- %\subsection{$K_s$ FD}
- \begin{frame}
- \frametitle{Let's make our inflaton more $K_s$ like.}
- {~}
-
-
- \includegraphics[scale=0.15]{pic2/FD_XI_short_lifetime.png}
-
-
- No bumps.Are we unlucky?
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
- \subsection{Further steps }
-
- \begin{frame}
- \frametitle{Futher steps}
- {~}
- \begin{itemize}
- \item Try making selection.
- \item Will split the sample to up and downstream.
- \item Think about the normalization channel. Big problems!
-
-
-
- \end{itemize}
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
-
- \end{frame}
-
-
-
- \section{Bose-Einstein Correlations }
-
- \begin{frame}
- \frametitle{Bose-Einstein Correlation}
- {~}
- \begin{itemize}
- \item We had a talk on soft QCD from prof. Bialas.
- \item BEC looks more and more interesting.
- \item Indirect test of statistical model.
- \item The plan:
- \begin{enumerate}
- \item Measure 2 body correlations.
- \item Measure 3 body correlations. FIRST TIME MEASUREMENT!
- \end{enumerate}
- \item FDC looks bad. Not clear theoretical predictions.
- \item Will focus on K, $\pi$.
-
- \end{itemize}
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
- \begin{frame}
- \frametitle{Work done since last meeting}
- {~}
- \only<1>{
- \begin{itemize}
- \item BEC predicts and enhancement of pars in low Q region.
- \item To interpret you need Longitudinal Central Mass System (LCMS).
- \item Needs a specific axis. After some discussion we decided to have two samples:Z-axis, and jet axis.
- \item LCMS was implemented.
- \end{itemize}
- }
- \only<2>{
- \includegraphics[scale=0.4]{pic2/LCMS.png}
-
- }
-
- \only<3>{
- General Problem(since I didn't find it in literature): \\
- We have a four vector $Q_u=q_{1u}+q_{2u}$ and it's momentum competent $\overrightarrow{p}$. We have an arbitrary versor in space: $\overrightarrow{v}$. \\
- Question what's the boost vector $\overrightarrow{\beta} $?
-
- Solution:$\beta_i= v_i \dfrac{q_i}{q_0}$
-
- }
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
- \begin{frame}\frametitle{First look at BEC in LCMS}
- \begin{columns}
- \column{2.5in}
- \includegraphics[scale=0.23]{pic2/Qside.png}
-
-
- \column{2.5in}
- \includegraphics[scale=0.23]{pic2/Qlong.png}
-
-
- \end{columns}
-
- This is $0.15\%$ of statistics!
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
-
-
-
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-
-
- \section{$\Lambda_c$ decays}
- \begin{frame}\frametitle{Motivation for $\Lambda_c$}
-
- \begin{small}
- Following the $\tau \to 3 \mu$ and $\tau \to p \mu \mu$ (published 2 weeks ago) we decided to go one step further and analyse analogous channels for $\Lambda_c$.
- \begin{itemize}
- \item Decays have different physics motivations:
- \end{itemize}
- \begin{center}
- \begin{tabular}{ l | l }
- $\tau \to 3 \mu$ LFV & $\Lambda_c \to 3 \mu$ $|B-L|= 0$ \\
- $\tau^{+} \to p \mu^{-} \mu^{+} $ $|B-L|= 0$ & $\Lambda_c^{+} \to p \mu^{-} \mu^{+} $ FCNC \\
- $\tau^{+} \to \bar{p} \mu^{+} \mu^{+} $ $|B-L|= 0$ & $\Lambda_c^{+} \to \bar{p} \mu^{+} \mu^{+} $ $|B-L|= 0$ \\
-
- \end{tabular}
- \end{center}
-
- \begin{itemize}
- \item The current limits ($@$ 90\% CL):
- \end{itemize}
- $\mathcal{B}( \Lambda_c^{+} \to p \mu^{-} \mu^{+} ) < 4.4 \times 10^{-5}$, \footnote{arXiv:1107.4465}
- \newline
- $\mathcal{B}( \Lambda_c^{+} \to \bar{p} \mu^{+} \mu^{+} ) < 9.4 \times 10^{-6}$
- \newline
- $\mathcal{B}( \Lambda_c^{+} \to 3 \mu )$ No constraints!
- \end{small}
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
-
-
- \begin{frame}\frametitle{First look at new MC}
-
-
-
- \includegraphics[scale=0.3]{pic2/Lc_mass.png}
-
-
- $mean=2287.46 Mev$\\
- $\sigma_1=17.5 Mev$, $\sigma_2=6.5 MeV$
-
-
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
- \begin{frame}\frametitle{Plans for next week}
-
-
- \begin{itemize}
- \item Continue background production for $\tau$ and $\Lambda_c$
- \item Have a look at isolation paramenter for Lc and tau.
- \item Produce all ntuples for Lc.
- \item Implement jet algorithm for BEC.
-
- \end{itemize}
-
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
-
-
-
-
-
- \begin{frame}
- \begin{Huge}
- BACKUP
- \end{Huge}
- \textref {M.Chrz\k{a}szcz, N.Serra 2013}
- \end{frame}
-
-
-
- \begin{frame}
-
- \frametitle{Strategy}
- {~}
- Follow the strategy of $\tau$ analysis:
- \begin{itemize}
- \item Take prompt $\Lambda_c$, separate approach to SL.
- \item Loose cut preselection.
- \item Train MVA on MC prompt signal and recalibrate on data.
- \item Mass resolution we expect similar to $\tau$. $15 MeV$ for $3 \mu$ and $9 MeV$ for $p \mu \mu$. Mean recalibrated from data.
- \item Normalize to $\Lambda_c^{+} \to p K^{-} \pi^{+}$, or $\Lambda_c^{+} \to p \pi^{-} \pi^{+}$.
- \item Optimise the binning in MVA.
- \item CLs method for limit.
- \end{itemize}
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
- %\section{Comparison $\Lambda_c$ vs $\tau$}
- \begin{frame}\frametitle{Comparison $\Lambda_c$ vs $\tau$}
- \colorbox{green}{Strong sides of $\Lambda_c$:}
-
-
- \begin{itemize}
- \item {No SM background in $3 \mu$ case ($\PDs \to \eta(\mu\mu\gamma) \mu \nu$)}
- \item {Smaller combinatorial background than in $\tau$ decays. \Simley{1} }
- %\item {Better prospers of observing something. Rare is better than forbidden \Simley{1} }
- \end{itemize}
-
- \colorbox{red}{Weaker sides of $\Lambda_c$:}
- \begin{itemize}
- \item {Smaller no. of $\Lambda_c$ than $\tau$ to begin with.}
- \item {Need to study very carefully $\Lambda_c$ production and backgrounds. }
- \Simley{-1}
-
- \end{itemize}
-
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
- %\section{Work done so far}
- \begin{frame}\frametitle{Work done so far}
- \begin{itemize}
- \item $\Lambda_c \to p \mu \mu$ is already stripped(line was with $\tau$ line all along).
- \item $\Lambda_c \to 3\mu$ is being stripped in incremental stripping.
- \item Requested 1M signal samples. Production will today most likely.
- \item Background studies.
-
- \end{itemize}
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
- \begin{frame}\frametitle{Possible background}
-
- \begin{center}
-
- \begin{tabular}{| c | c | c |}
- \hline
- \textbf{ Resonance} & $\mathcal{B} (\lambda_c \to p X)$& $\mathcal{B} (X \to \mu \mu)$\\ \hline
-
- $\eta$ & UNKNOWN & $(5.8 \pm 0.6) \times 10^{-6}$ \\ \hline
- $\rho^0$ & UNKNOWN & $(4.55 \pm 0.28) \times 10^{-5}$ \\ \hline
- $\omega$ & UNKNOWN & $(9.1 \pm 3.0) \times 10^{-5}$ \\ \hline
- $f(980)$ & $(2.8 \pm 1.9) \times 10^{-3}$ & UNKNOWN \\ \hline
- $\phi$ & $(8.2 \pm 2.7) \times 10^{-4} $ & $(2.89 \pm 0.19) \times 10^{-4}$ \\ \hline \hline
-
- \textbf{ Resonance} & $\mathcal{B} (\lambda_c \to p X)$ & $\mathcal{B} (X \to \mu \mu \gamma)$\\ \hline
- $\eta$ & UNKNOWN & $(3.1 \pm 0.4) \times 10^{-4}$ \\ \hline
- \end{tabular}
- \end{center}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
-
-
-
- \begin{frame}\frametitle{$\Lambda_c$ production mechanism}
-
- \begin{center}
-
- \begin{tabular}{| c | c |}
- \hline
- \textbf{ Process} & $\mathcal{B} (X \to \lambda_c Y)$ \\ \hline
- $\Lambda_B \to \Lambda_c^+ \pi^{-}$ & $0.0088 \pm 0.0032$ \\ \hline
- $\Lambda_B \to \Lambda_c^+ \Pl \nu$ & $0.05 \pm 0.014$ \\ \hline
- $\Lambda_B \to \Lambda_c^+ \Pl \nu \pi \pi $ & $0.056 \pm 0.031$ \\ \hline
- $B \to \Lambda_c^+ \Pp \pi \pi^0 $ & $(1.8 \pm 0.6) \times 10^{-3}$ \\ \hline
- $B \to \Lambda_c^+ \Pp \pi \pi \pi $ & $(2.3 \pm 0.7) \times 10^{-3}$ \\ \hline
- $B \to \Lambda_c^+ \Lambda_c^- K^+ $ & $(8.7 \pm 3.5) \times 10^{-4}$ \\ \hline
- $B \to \Sigma(2455) \Pproton \pi^0 $ & $(4.4 \pm 1.8) \times 10^{-4}$ \\ \hline
- $B \to \Sigma(2455) \Pproton \pi \pi $ & $(4.4 \pm 1.7) \times 10^{-4}$ \\ \hline
- $B \to \Sigma(2455)^{--} \Pproton \pi \pi $ & $(2.8 \pm 1.2) \times 10^{-4}$ \\ \hline
- \hline
- \end{tabular}
- \end{center}
-
-
- \textref {M.Chrz\k{a}szcz 2013}
- \end{frame}
-
-
-
-
- \end{document}