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Presentations / Zurich_group / 17_11_2015_SL / mchrzasz.tex
@mchrzasz mchrzasz on 10 Dec 2015 12 KB update
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  199.  
  200.  
  201.  
  202. \author{ {\fontspec{Trebuchet MS}Marcin Chrz\k{a}szcz} (Universit\"{a}t Z\"{u}rich)}
  203. \institute{UZH}
  204. \title[$R(\PLambdac^{\ast})$ measurements]{$R(\PLambdac^{\ast}$ measurements}
  205. \date{25 September 2014}
  206.  
  207.  
  208. \begin{document}
  209. \tikzstyle{every picture}+=[remember picture]
  210.  
  211. {
  212. \setbeamertemplate{sidebar right}{\llap{\includegraphics[width=\paperwidth,height=\paperheight]{bubble2}}}
  213. \begin{frame}[c]%{\phantom{title page}}
  214. \begin{center}
  215. \begin{center}
  216. \begin{columns}
  217. \begin{column}{0.75\textwidth}
  218. \flushright\fontspec{Trebuchet MS}\bfseries \Huge {$R(\PLambdac^{\ast})$ measurements}
  219. \end{column}
  220. \begin{column}{0.02\textwidth}
  221. {~}
  222. \end{column}
  223. \begin{column}{0.23\textwidth}
  224. % \hspace*{-1.cm}
  225. \vspace*{-3mm}
  226. \includegraphics[width=0.6\textwidth]{lhcb-logo}
  227. \end{column}
  228. \end{columns}
  229. \end{center}
  230. \quad
  231. \vspace{3em}
  232. \begin{columns}
  233. \begin{column}{0.44\textwidth}
  234. \flushright \vspace{-1.8em} {\fontspec{Trebuchet MS} \Large Marcin Chrząszcz\\\vspace{-0.1em}\small \href{mailto:mchrzasz@cern.ch}{mchrzasz@cern.ch}}
  235.  
  236. \end{column}
  237. \begin{column}{0.53\textwidth}
  238. \includegraphics[height=1.3cm]{uzh-transp}
  239. \end{column}
  240. \end{columns}
  241.  
  242. \vspace{1em}
  243. % \footnotesize\textcolor{gray}{With N. Serra, B. Storaci\\Thanks to the theory support from M. Shaposhnikov, D. Gorbunov}\normalsize\\
  244. \vspace{0.5em}
  245.  
  246. \textcolor{normal text.fg!50!Comment}{Zurich meeting, CERN\\September 24, 2014}
  247. \end{center}
  248. \end{frame}
  249. }
  250.  
  251.  
  252. \begin{frame}[c]{A word on recent anomalies}
  253. \begin{minipage}{\textwidth}
  254. \begin{itemize}
  255. \item $R(\PDstar)=\dfrac{\mathcal{B}(\PB \to \PDstar \Ptau \Pnu)}{\mathcal{B}(\PB \to \PDstar \Pmu \Pnu)}$
  256. \item Clean SM prediction: $R(\PDstar)=0.252(3)$, PRD 85 094025 (2012)
  257. \item LHCb result: $R(\PDstar)= 0.336 \pm 0.027 \pm 0.030$, HFAG average: $R(\PDstar)=0.322 \pm 0.022$
  258. \item $3.9~\sigma$ discrepancy wrt. SM.
  259. \end{itemize}
  260. \begin{center}
  261. \includegraphics[width=0.52\textwidth]{images/RDstar.png}
  262. \end{center}
  263.  
  264.  
  265. \end{minipage}
  266. \vspace*{2.cm}
  267. \end{frame}
  268.  
  269. \begin{frame}[c]{The idea}% is to measure the same quantity but for baryons}
  270. \begin{minipage}{\textwidth}
  271. \begin{itemize}
  272. \item The idea is to measure the same quantity but for baryons.
  273. \item With Danny we are working on SM prediction of $R(\PLambdac^{\ast})$.
  274. \item btw. There are 2 interesting $\PLambdac^{\ast}$: $\PLambdac^{\ast}(2595)$ and $\PLambdac^{\ast}(2625)$.
  275. \item Both go into $\PLambdac \pi \pi$ state.
  276. \item They are both a part of the same doublet aka both are described by Rarita-Swinger spinor.
  277. \item Additional measurements: $\mathcal{B}( \Lambda_b \to \PLambdac^{ast} \ell \nu$ have a experimental measurement.
  278. \item Ration of the two states gives info about QCD parameter that for now has large error.
  279. \end{itemize}
  280.  
  281.  
  282. \end{minipage}
  283. \vspace*{2.cm}
  284. \end{frame}
  285.  
  286.  
  287. \begin{frame}[c]{The good}% is to measure the same quantity but for baryons}
  288. \begin{minipage}{\textwidth}
  289. \begin{itemize}
  290. \item For the muon mode there exist a $\PLambdab \to \PLambdac \mu \nu$ stripping line. So processes(2011 done, 2012 on the grid).
  291. \end{itemize}
  292. \includegraphics[width=0.95\textwidth]{images/LcSTAR.png}
  293.  
  294. \end{minipage}
  295. \vspace*{2.cm}
  296. \end{frame}
  297.  
  298.  
  299. \begin{frame}[c]{The bad}% is to measure the same quantity but for baryons}
  300. \begin{minipage}{\textwidth}
  301. \begin{itemize}
  302. \item There is no stripping for the tau mode.
  303. \item I am running fast to meet the deadline.
  304. \item Would be great to have both hadronic tau decay and muonic.
  305. \end{itemize}
  306. \includegraphics[width=0.95\textwidth]{images/LcSTAR.png}
  307.  
  308. \end{minipage}
  309. \vspace*{2.cm}
  310. \end{frame}
  311.  
  312.  
  313.  
  314.  
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  324.  
  325. \end{document}