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@mchrzasz mchrzasz on 6 Oct 2017 13 KB added
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  199. \def\LcTopmumu{\Lambda_c^{+} \to p \mu^+ \mu^-}
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  217. \author{ {Marcin Chrzaszcz} (CERN)}
  218. \institute{UZH}
  219. \title[Review of $B \to K_s \pi^+ \pi^-$ ]{Review of $B \to K_s \pi^+ \pi^-$ }
  220.  
  221. \date{25 September 2014}
  222.  
  223.  
  224. \begin{document}
  225. \tikzstyle{every picture}+=[remember picture]
  226.  
  227. {
  228. \setbeamertemplate{sidebar right}{\llap{\includegraphics[width=\paperwidth,height=\paperheight]{bubble2}}}
  229. \begin{frame}[c]%{\phantom{title page}}
  230. \begin{center}
  231. \begin{center}
  232. \begin{columns}
  233. \begin{column}{0.75\textwidth}
  234. \flushright \bfseries \Large {Anatomy of the decay $\PBzero \to \PKshort \Ppi^+ \Ppi^- $ and first observation of the $CP$ asymmetry in the transition $\APBzero \to \PKstar^- \Ppi^+$}
  235. \end{column}
  236. \begin{column}{0.02\textwidth}
  237. {~}
  238. \end{column}
  239. \begin{column}{0.23\textwidth}
  240. % \hspace*{-1.cm}
  241. \vspace*{-3mm}
  242. \includegraphics[width=0.6\textwidth]{lhcb-logo}
  243. \end{column}
  244.  
  245. \end{columns}
  246. \end{center}
  247. \quad
  248. \vspace{3em}
  249. \begin{columns}
  250. \begin{column}{0.44\textwidth}
  251. \flushright \vspace{-2.8em} { \fontspec{Zapfino} Marcin Chrzaszcz\\\vspace{-0.1em}\small \href{mailto:mchrzasz@cern.ch}{mchrzasz@cern.ch}}
  252.  
  253. %\flushright \vspace{-2.8em} { Marcin Chrzaszcz\\\vspace{-0.1em}\small \href{mailto:mchrzasz@cern.ch}{mchrzasz@cern.ch}}
  254.  
  255.  
  256. \end{column}
  257. \begin{column}{0.53\textwidth}
  258. \hspace{2.0cm}
  259. \includegraphics[height=1.6cm]{cern}
  260. \end{column}
  261. \end{columns}
  262.  
  263. \vspace{1em}
  264. \textcolor{normal text.fg!50!Comment}{LBT meeting, CERN\\October 6, 2017}
  265. \end{center}
  266. \end{frame}
  267. }
  268.  
  269.  
  270. \begin{frame}{Yellow pages}
  271. \vspace{1.5em}
  272. \begin{minipage}{\textwidth}
  273. \ARROW Proponents: M. Baalouch, E. Ben-Haim, E. Cogneras, T. Gershon, M. Grabalosa, L. Henry, T. Latham, J.M. Maratas, J. McCarthy, D. Milanes, S. Monteil, R. Silva Coutinho, N. Watson\\
  274. \ARROW Reviewers: Stephanie Hansmann-Menzemer (chair), Stefano Gallorini\\
  275. \ARROW EB: Mitesh Patel\\
  276. \ARROW EB readers: Patrick Koppenburg, Simon Eidelman\\
  277. \ARROW Twiki: \href{https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/Dalitz_KSPiPi}{\url{https://twiki.cern.ch/twiki/bin/viewauth/LHCbPhysics/Dalitz_KSPiPi}}\\
  278. \ARROW Jurnal: PRL.\\
  279.  
  280.  
  281. \vspace{1cm}
  282.  
  283. \ARROW Deadline for comments: $13^{\rm th}$ October.\\
  284. \ARROW Please send me comments before: $12^{\rm th}$ October.\\
  285. \end{minipage}
  286. \vspace*{2.cm}
  287. \end{frame}
  288.  
  289.  
  290.  
  291.  
  292. \begin{frame}{Physics in the paper}
  293. \vspace{1.5em}
  294. \begin{minipage}{\textwidth}
  295. \begin{columns}
  296. \column{0.5\textwidth}
  297. \ARROW Looking for new source of CP violation outside the CKM matrix.\\
  298. \ARROW Looking at the transition $b \to s q\bar{q}$, where $q=u,d,s$.\\
  299. \ARROW Rule of thumb: CP violation should be similar to the ones in $b \to s c\bar{c}$.\\
  300. \ARROW The decay $\PBzero \to \PKshort \Ppi^+ \Ppi^- $ has reach resonant structure!!\\
  301. \ARROWR Dalitz analysis.
  302. \column{0.5\textwidth}
  303. \includegraphics[width=0.9\textwidth]{images/Fig1.png}
  304. \end{columns}
  305. \ARROW Because of available statistics, the analysis is untagged and time integrated (isobar model):
  306. \begin{align*}
  307. P(s_+, s_- )= \frac{ \vert A(s_+, s_-) \vert^2 \vert \bar{A}(s_+, s_-) \vert^2 }{\int\int_{\Omega} ( \vert A(s_+, s_-) \vert^2 \vert \bar{A}(s_+, s_-) \vert^2 ) d s_+ ds_-}
  308. \end{align*}
  309. \end{minipage}
  310. \vspace*{2.cm}
  311. \end{frame}
  312.  
  313. \begin{frame}{Physics in the paper}
  314. \vspace{1.5em}
  315. \begin{minipage}{\textwidth}
  316. \ARROW The amplitudes are defined:
  317. \begin{align*}
  318. A = \sum_{j=1}^N c_j F_j(s_+, s_-),~~\bar{A} = \sum_{j=1}^N \bar{c}_j \bar{F}_j(s_+, s_-)
  319. \end{align*}
  320. \begin{columns}
  321. \column{0.65\textwidth}
  322.  
  323. \includegraphics[width=0.9\textwidth]{images/Tab1.png}
  324. \column{0.35\textwidth}
  325. \begin{align*}
  326. A_{CP}= \frac{ \vert \bar{c}_j \vert^2 - \vert c_j \vert^2 }{ \vert \bar{c}_j \vert^2 + \vert c_j \vert^2}
  327. \end{align*}
  328.  
  329. \end{columns}
  330.  
  331. \end{minipage}
  332. \vspace*{2.cm}
  333. \end{frame}
  334.  
  335.  
  336.  
  337. \begin{frame}{Experimental elements}
  338. \vspace{1.5em}
  339. \begin{minipage}{\textwidth}
  340. \ARROW Run1 data set! ($3~{\rm fb}^{-1}$).\\
  341. \ARROW Interesting trigger solution:
  342. \begin{itemize}
  343. \item $\PKshort \to \pi \pi$ can decay outside the VELO.
  344. \item Only for the second part of 2012 ($1.4~{\rm fb}^{-1}$) there was an HLT2 line implemented which considered downstream $\PKshort$.
  345. \end{itemize}
  346. \ARROW BDT for selection.\\
  347. \ARROW Correcting efficiency in Dalitz plane.
  348.  
  349. \end{minipage}
  350. \vspace*{2.cm}
  351. \end{frame}
  352.  
  353.  
  354. \begin{frame}{Results}
  355. \vspace{1.5em}
  356. \begin{minipage}{\textwidth}
  357.  
  358. \ARROW Paper reports:\\
  359. \only<1>{
  360. \begin{align*}
  361. \mathcal{F}_j = \frac{\int \int_{\Omega} \vert c_j F_j(s_+, s_-) \vert^2 d s_+ ds_- }{\int \int_{\Omega} \vert \sum_j c_j F_j (s_+, s_-) \vert^2 d s_+ ds_- }
  362. \end{align*}
  363. \begin{align*}
  364. A_{CP}= \frac{ \vert \bar{c}_j \vert^2 - \vert c_j \vert^2 }{ \vert \bar{c}_j \vert^2 + \vert c_j \vert^2}
  365. \end{align*}
  366. }
  367. \only<2>{
  368. \begin{center}
  369. \includegraphics[width=0.8\textwidth]{images/Fig2.png}
  370. \end{center}
  371.  
  372. }
  373. \only<3>{
  374. \begin{center}
  375. \includegraphics[width=0.8\textwidth]{images/Fig3.png}
  376. \end{center}
  377. \ARROW The result is $6.8(6.0)~\sigma$ away from being zero. (including systematics).\\
  378. \ARROW Reasonable agreement with world average:
  379. \begin{align*}
  380. A_{CP} (\PKstar^{\pm} \pi^{\mp})-0.23 \pm 0.06
  381. \end{align*}
  382.  
  383. }
  384. \only<4>{
  385. \begin{center}
  386. \includegraphics[width=0.65\textwidth]{images/Fig4.png}
  387. \end{center}
  388.  
  389.  
  390. }
  391. \end{minipage}
  392. \vspace*{2.cm}
  393. \end{frame}
  394.  
  395.  
  396.  
  397.  
  398. \begin{frame}{Systematics}
  399. \vspace{1.5em}
  400. \begin{minipage}{\textwidth}
  401.  
  402. \ARROW There are two cathegories of systematics:
  403. \begin{itemize}
  404. \item Experimental.
  405. \item Model related.
  406. \end{itemize}
  407. \ARROW The experimental one were obtained with pseudo experiments.\\
  408. \ARROW Dominant systematics is the efficiency determination!\\
  409. \ARROWR Model related systematics are also evaluated:
  410. \begin{itemize}
  411. \item Varying each of the parameters of the mean and the width.
  412. \item related to marginal $f_2(1270)$ and $f_0(500)$ resonance components.
  413. \end{itemize}
  414.  
  415.  
  416. \end{minipage}
  417. \vspace*{2.cm}
  418. \end{frame}
  419.  
  420.  
  421. \begin{frame}{First comments}
  422. \vspace{1.5em}
  423. \begin{minipage}{\textwidth}
  424. \ARROW Overall the analysis seems solid!!\\
  425. \ARROW Some things might be better described in the paper.\\
  426. \ARROW Some physics comments:
  427. \begin{itemize}
  428. \item Non-resonant modelling.
  429. \item Over estimation of model systematic.
  430. \item
  431. \end{itemize}
  432. \ARROW Paper is to long: $3803$ words (PRL : $3750$).\\
  433.  
  434.  
  435.  
  436.  
  437. \end{minipage}
  438. \vspace*{2.cm}
  439. \end{frame}
  440.  
  441. \backupbegin
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  443. \begin{frame}\frametitle{Backup}
  444. \topline
  445.  
  446. \end{frame}
  447.  
  448. \backupend
  449.  
  450. \end{document}