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- bullet=circle, % Other option: square
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- shadow=false, % Shading for beamer blocks
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- ]{Flip}
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-
-
- \author{ {\fontspec{Trebuchet MS}Marcin Chrz\k{a}szcz} (Universit\"{a}t Z\"{u}rich)}
- \institute{UZH}
- \title[$R(\PLambdac^{\ast})$ measurements]{$R(\PLambdac^{\ast}$ measurements}
- \date{25 September 2014}
-
-
- \begin{document}
- \tikzstyle{every picture}+=[remember picture]
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- {
- \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 {$R(\PLambdac^{\ast})$ measurements}
- \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}}
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- \includegraphics[height=1.3cm]{uzh-transp}
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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}{Zurich meeting, CERN\\September 24, 2014}
- \end{center}
- \end{frame}
- }
-
-
- \begin{frame}[c]{A word on recent anomalies}
- \begin{minipage}{\textwidth}
- \begin{itemize}
- \item $R(\PDstar)=\dfrac{\mathcal{B}(\PB \to \PDstar \Ptau \Pnu)}{\mathcal{B}(\PB \to \PDstar \Pmu \Pnu)}$
- \item Clean SM prediction: $R(\PDstar)=0.252(3)$, PRD 85 094025 (2012)
- \item LHCb result: $R(\PDstar)= 0.336 \pm 0.027 \pm 0.030$, HFAG average: $R(\PDstar)=0.322 \pm 0.022$
- \item $3.9~\sigma$ discrepancy wrt. SM.
- \end{itemize}
-
- \begin{center}
-
- \includegraphics[width=0.52\textwidth]{images/RDstar.png}
-
- \end{center}
-
-
- \end{minipage}
- \vspace*{2.cm}
- \end{frame}
-
- \begin{frame}[c]{The idea}% is to measure the same quantity but for baryons}
- \begin{minipage}{\textwidth}
- \begin{itemize}
- \item The idea is to measure the same quantity but for baryons.
- \item With Danny we are working on SM prediction of $R(\PLambdac^{\ast})$.
- \item btw. There are 2 interesting $\PLambdac^{\ast}$: $\PLambdac^{\ast}(2595)$ and $\PLambdac^{\ast}(2625)$.
- \item Both go into $\PLambdac \pi \pi$ state.
- \item They are both a part of the same doublet aka both are described by Rarita-Swinger spinor.
- \item Additional measurements: $\mathcal{B}( \Lambda_b \to \PLambdac^{ast} \ell \nu$ have a experimental measurement.
- \item Ration of the two states gives info about QCD parameter that for now has large error.
- \end{itemize}
-
-
- \end{minipage}
- \vspace*{2.cm}
- \end{frame}
-
-
- \begin{frame}[c]{The good}% is to measure the same quantity but for baryons}
- \begin{minipage}{\textwidth}
- \begin{itemize}
- \item For the muon mode there exist a $\PLambdab \to \PLambdac \mu \nu$ stripping line. So processes(2011 done, 2012 on the grid).
- \end{itemize}
- \includegraphics[width=0.95\textwidth]{images/LcSTAR.png}
-
- \end{minipage}
- \vspace*{2.cm}
- \end{frame}
-
-
- \begin{frame}[c]{The bad}% is to measure the same quantity but for baryons}
- \begin{minipage}{\textwidth}
- \begin{itemize}
- \item There is no stripping for the tau mode.
- \item I am running fast to meet the deadline.
- \item Would be great to have both hadronic tau decay and muonic.
- \end{itemize}
- \includegraphics[width=0.95\textwidth]{images/LcSTAR.png}
-
- \end{minipage}
- \vspace*{2.cm}
- \end{frame}
-
-
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