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Presentations / Drell_Yan / LHCbweek_12_2015 / mchrzasz.tex
@mchrzasz mchrzasz on 5 Dec 2015 11 KB added lhcb week presentation slides
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  200.  
  201.  
  202.  
  203. \author{ {\fontspec{Trebuchet MS}Marcin Chrz\k{a}szcz, Katharina M\"{u}eller} (UZH)}
  204. \institute{UZH}
  205. \title[Low Mass Drell-Yan Status Report ]{Low Mass Drell-Yan Status Report }
  206. \date{7 September 2015}
  207.  
  208.  
  209. \begin{document}
  210. \tikzstyle{every picture}+=[remember picture]
  211.  
  212. {
  213. \setbeamertemplate{sidebar right}{\llap{\includegraphics[width=\paperwidth,height=\paperheight]{bubble2}}}
  214. \begin{frame}[c]%{\phantom{title page}}
  215. \begin{center}
  216. \begin{center}
  217. \begin{columns}
  218. \begin{column}{0.75\textwidth}
  219. \flushright\fontspec{Trebuchet MS}\bfseries \Huge {Low Mass Drell-Yan Status Report }
  220. \end{column}
  221. \begin{column}{0.02\textwidth}
  222. {~}
  223. \end{column}
  224. \begin{column}{0.23\textwidth}
  225. % \hspace*{-1.cm}
  226. \vspace*{-3mm}
  227. \includegraphics[width=0.6\textwidth]{lhcb-logo}
  228. \end{column}
  229. \end{columns}
  230. \end{center}
  231. \quad
  232. \vspace{3em}
  233. \begin{columns}
  234. \begin{column}{0.44\textwidth}
  235. \flushright \vspace{-1.8em} {\fontspec{Trebuchet MS} \Large Marcin Chrząszcz\\\vspace{-0.1em} Katharina M\"{u}eller Nicola Chiapolini}
  236.  
  237. \end{column}
  238. \begin{column}{0.53\textwidth}
  239. \includegraphics[height=1.3cm]{uzh-transp}
  240. \end{column}
  241. \end{columns}
  242.  
  243. \vspace{1em}
  244. % \footnotesize\textcolor{gray}{With N. Serra, B. Storaci\\Thanks to the theory support from M. Shaposhnikov, D. Gorbunov}\normalsize\\
  245. \vspace{0.5em}
  246.  
  247. \textcolor{normal text.fg!50!Comment}{Electroweak WG, CERN\\September 7, 2015}
  248. \end{center}
  249. \end{frame}
  250. }
  251.  
  252.  
  253. \begin{frame}\frametitle{Introduction to Drell-Yan}
  254.  
  255. \begin{columns}
  256. \column{2.5in}
  257. \begin{itemize}
  258. \item Drell-Yan are process of two quark anihilations in which neutral current couples to two leptons.
  259. \item The cross section of this process depends on two components:
  260. \begin{itemize}
  261. \item Hard scattering process $\color{OrangeRed}{\Rrightarrow}$ NNLO pQCD.
  262. \item Parton Distribution Function (PDF).
  263. \end{itemize}
  264. \item Measurement of the cross section have a high sensitivity to the PDF
  265. \item Due to unique coverage $2<y<5$ LHCb probes the $Q^2-x$ region not covered by other experiments.
  266.  
  267. \end{itemize}
  268.  
  269. \column{2.5in}
  270. \includegraphics[width=0.95\textwidth]{images/feynmanDiagram_DrellYan_wRad.png}\\
  271. \includegraphics[width=0.85\textwidth]{images/Q2_x.png}
  272.  
  273. \end{columns}
  274.  
  275.  
  276. \end{frame}
  277.  
  278.  
  279. \begin{frame}\frametitle{Selection}
  280.  
  281. \begin{columns}
  282. \column{2.5in}
  283. \begin{itemize}
  284. \item Analysis moved to stripping 20.
  285. \item Plan is to measure separately $7~\TeV$ and $8~\TeV$ data.
  286. \item In addition we will provide the ratio of both samples), where many systematic cancel.
  287. \item Overall observed a good agreement between 2011 and 2012 data.
  288. \item Requested large MC sample to reduce the systematics errors.
  289. \item Analysis aims at DIS 2016.
  290. \end{itemize}
  291.  
  292. \column{2.5in}
  293. \includegraphics[width=0.95\textwidth]{images/mumu_iso_yeartrig_sig.png}\\
  294. \includegraphics[width=0.95\textwidth]{images/mumu_iso_yeartrig.png}\\
  295.  
  296.  
  297. \end{columns}
  298.  
  299. \end{frame}
  300.  
  301. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  302. \begin{frame}\frametitle{Isolation}
  303. \begin{itemize}
  304. \item Drell-Yan unfortunately do not peak in mass $\twoheadrightarrow$ need another variable to control the purity.
  305. \item Find mass independent isolation variable such that the signal template can be determined from data.
  306. \item We define an isolation variable:
  307. \begin{align*}
  308. \mu_{ {\rm{iso}}} = \log(p_T^{ cone}(\mu, 0.5) - p_T^{ cone}(\mu, 0.1))
  309. \end{align*}
  310. \item For two muons we take the maximum of the two isolations:
  311. \begin{align*}
  312. \mu\mu_{ {\rm{iso}}} = \max( \mu_{ {\rm{iso}}}^+, \mu_{ {\rm{iso}}}^-)
  313. \end{align*}
  314. \end{itemize}
  315. \begin{center}
  316. \begin{columns}
  317. \column{0.5\textwidth}
  318. \includegraphics[angle=-90,width=0.9\textwidth]{images/Z0_iso.pdf}
  319. \column{0.5\textwidth}
  320. \includegraphics[width=0.8\textwidth]{images/iso.png}
  321. \end{columns}
  322.  
  323. \end{center}
  324. \end{frame}
  325.  
  326.  
  327. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  328.  
  329.  
  330. \begin{frame}\frametitle{Conclusions}
  331. \begin{itemize}
  332. \item Analysis strategy finalized.
  333. \item Aim: DIS 2016
  334. \item Early 2016: WG sign off.
  335.  
  336.  
  337. \end{itemize}
  338. \end{frame}
  339.  
  340. \backupbegin
  341.  
  342. \begin{frame}\frametitle{Backup}
  343. \topline
  344.  
  345. \end{frame}
  346.  
  347. \backupend
  348.  
  349. \end{document}