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Presentations / Zurich_group / 16_07_2013 / group_meeting.tex
@Marcin Chrzaszcz Marcin Chrzaszcz on 28 Jul 2013 17 KB update
  1. % This program can be redistributed and/or modified under the terms
  2. % of the GNU Public License, version 3.
  3. %
  4. % Seth Brown, Ph.D.
  5. % sethbrown@drbunsen.org
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  143.  
  144. % see the macros.tex file for definitions
  145. \include{macros }
  146.  
  147. % title slide definition
  148. \title{Updates on activities.}
  149. %\subtitle{a bias report}
  150. \author{ Marcin Chrz\k{a}szcz$^{1,2}$ , Nicola Serra$^{1}$ }
  151. \institute[UTH, IFJ]
  152. {
  153. %\begin{tiny}
  154. $ ^1$ University of Zurich , $ ^2$ Institute of Nuclear Physics, Krakow,
  155. %\end{tiny}smallsmall
  156. }
  157.  
  158. \date{ \begin{small} $16^{th}$ July 2013 \end{small}}
  159.  
  160. %--------------------------------------------------------------------
  161. % Introduction
  162. %--------------------------------------------------------------------
  163.  
  164. \begin{document}
  165.  
  166.  
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  177. \titlepage
  178.  
  179. \begin{center}
  180. \includegraphics[height=1.0cm ]{pic/uzh.jpg}
  181. % \hspace{0.5cm}
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  191. \end{frame}
  192.  
  193. %--------------------------------------------------------------------
  194. % OUTLINE
  195. %--------------------------------------------------------------------
  196.  
  197.  
  198.  
  199.  
  200. \section[Outline]{}
  201. \begin{frame}
  202. \tableofcontents
  203. \end{frame}
  204.  
  205.  
  206.  
  207.  
  208.  
  209.  
  210.  
  211. %-------------------------------------------------------------------
  212. % Introduction
  213. %-------------------------------------------------------------------
  214. %
  215. % Set the background for the rest of the slides.
  216. % Insert infoline
  217. \setbeamertemplate{background}
  218. {\includegraphics[width=\paperwidth,height=\paperheight]{slide_bg}}
  219. \setbeamertemplate{footline}[bunsentheme]
  220.  
  221. \title{Update on analysis}
  222.  
  223.  
  224. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  225. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  226.  
  227. \setbeamertemplate{background}
  228. {\includegraphics[width=\paperwidth,height=\paperheight]{slide_bg}}
  229. \setbeamertemplate{footline}[bunsentheme]
  230. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%2>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  231.  
  232. \section{Inflaton analysis}
  233. \subsection{Reminder}
  234. \begin{frame}\frametitle{Reminder}
  235. We observed strange FD distributions in MC:
  236. \begin{columns}
  237. \column{2.5in}
  238. Reconstructed FD
  239. \includegraphics[scale=0.35]{pic2/FD_XI_reco.png}
  240.  
  241.  
  242. \column{2.5in}
  243. Reconstructed life time
  244. \includegraphics[scale=0.35]{pic2/time_XI_true.png}
  245.  
  246.  
  247. \end{columns}
  248.  
  249.  
  250.  
  251. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  252. \end{frame}
  253.  
  254. %\section{Work done so far}
  255.  
  256.  
  257.  
  258. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%55
  259. \begin{frame}
  260. \subsection{Generator Checks}
  261.  
  262. \frametitle{Work done so far}
  263. {~}
  264. Cross check:
  265. \begin{itemize}
  266. \item Let's simulate decay using generator level.
  267. \item Same seeds, configuration, etc.
  268.  
  269. \end{itemize}
  270.  
  271. \includegraphics[scale=0.25]{pic2/FD_mctrue.png}\\
  272.  
  273.  
  274.  
  275. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  276. \end{frame}
  277. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  278. \begin{frame}
  279. \subsection{Let's look into data}
  280.  
  281. \frametitle{First look into data}
  282. {~}
  283. \begin{columns}
  284. \column{2.5in}
  285. UpStream
  286. \includegraphics[scale=0.25]{pic2/normall_mass.png}
  287.  
  288.  
  289. \column{2.5in}
  290. DownStream
  291. \includegraphics[scale=0.25]{pic2/down_mass.png}
  292.  
  293.  
  294. \end{columns}
  295. Blinded: $[5200,5350]$
  296.  
  297. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  298. \end{frame}
  299.  
  300.  
  301.  
  302.  
  303.  
  304.  
  305. \begin{frame}
  306. \frametitle{What do we have in the Inflaton mass; UPSTREAM}
  307. {~}
  308.  
  309.  
  310. \includegraphics[scale=0.35]{pic2/inflaton_mass.png}
  311.  
  312.  
  313. Let's look closer.
  314.  
  315. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  316. \end{frame}
  317.  
  318.  
  319.  
  320.  
  321. \begin{frame}
  322. \frametitle{$K_s$}
  323. {~}
  324.  
  325.  
  326.  
  327. \includegraphics[scale=0.4]{pic2/KS_mass.png}
  328.  
  329.  
  330.  
  331.  
  332.  
  333.  
  334. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  335. \end{frame}
  336.  
  337.  
  338.  
  339.  
  340. \begin{frame}
  341. \frametitle{$J/ \Psi$}
  342. {~}
  343.  
  344.  
  345.  
  346. \includegraphics[scale=0.4]{pic2/jpsi_mass.png}
  347.  
  348.  
  349.  
  350.  
  351.  
  352.  
  353. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  354. \end{frame}
  355.  
  356.  
  357.  
  358. \begin{frame}
  359. \frametitle{$\Psi(2S)$}
  360. {~}
  361.  
  362.  
  363.  
  364. \includegraphics[scale=0.4]{pic2/psi2_mass.png}
  365.  
  366.  
  367.  
  368.  
  369.  
  370.  
  371. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  372. \end{frame}
  373.  
  374. \begin{frame}
  375. \frametitle{What do we have in the Inflaton mass; DOWNSTREAM}
  376. {~}
  377.  
  378.  
  379. \includegraphics[scale=0.35]{pic2/inflaton_mass_d.png}
  380.  
  381.  
  382.  
  383.  
  384. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  385. \end{frame}
  386.  
  387. \begin{frame}
  388. \frametitle{$K_s$}
  389. {~}
  390.  
  391.  
  392. \includegraphics[scale=0.35]{pic2/KS_mass_d.png}
  393.  
  394.  
  395.  
  396. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  397. \end{frame}
  398.  
  399.  
  400.  
  401. \subsection{$K_s$ FD}
  402. \begin{frame}
  403. \frametitle{$K_s$ FD}
  404. {~}
  405.  
  406.  
  407. \includegraphics[scale=0.35]{pic2/KS_flight_distance.png}
  408.  
  409.  
  410. looks normal \Simley{-1}
  411. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  412. \end{frame}
  413.  
  414.  
  415. %\subsection{$K_s$ FD}
  416. \begin{frame}
  417. \frametitle{Let's make our inflaton more $K_s$ like.}
  418. {~}
  419.  
  420.  
  421. \includegraphics[scale=0.15]{pic2/FD_XI_short_lifetime.png}
  422.  
  423.  
  424. No bumps.Are we unlucky?
  425.  
  426. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  427. \end{frame}
  428.  
  429.  
  430. \subsection{Further steps }
  431.  
  432. \begin{frame}
  433. \frametitle{Futher steps}
  434. {~}
  435. \begin{itemize}
  436. \item Try making selection.
  437. \item Will split the sample to up and downstream.
  438. \item Think about the normalization channel. Big problems!
  439.  
  440.  
  441.  
  442. \end{itemize}
  443.  
  444.  
  445.  
  446. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  447.  
  448. \end{frame}
  449.  
  450.  
  451.  
  452. \section{Bose-Einstein Correlations }
  453.  
  454. \begin{frame}
  455. \frametitle{Bose-Einstein Correlation}
  456. {~}
  457. \begin{itemize}
  458. \item We had a talk on soft QCD from prof. Bialas.
  459. \item BEC looks more and more interesting.
  460. \item Indirect test of statistical model.
  461. \item The plan:
  462. \begin{enumerate}
  463. \item Measure 2 body correlations.
  464. \item Measure 3 body correlations. FIRST TIME MEASUREMENT!
  465. \end{enumerate}
  466. \item FDC looks bad. Not clear theoretical predictions.
  467. \item Will focus on K, $\pi$.
  468.  
  469. \end{itemize}
  470.  
  471. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  472. \end{frame}
  473.  
  474.  
  475. \begin{frame}
  476. \frametitle{Work done since last meeting}
  477. {~}
  478. \only<1>{
  479. \begin{itemize}
  480. \item BEC predicts and enhancement of pars in low Q region.
  481. \item To interpret you need Longitudinal Central Mass System (LCMS).
  482. \item Needs a specific axis. After some discussion we decided to have two samples:Z-axis, and jet axis.
  483. \item LCMS was implemented.
  484. \end{itemize}
  485. }
  486. \only<2>{
  487. \includegraphics[scale=0.4]{pic2/LCMS.png}
  488.  
  489. }
  490.  
  491. \only<3>{
  492. General Problem(since I didn't find it in literature): \\
  493. 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: $\overrightarrow{v}$. \\
  494. Question what's the boost vector $\overrightarrow{\beta} $?
  495. Solution:$\beta_i= v_i \dfrac{q_i}{q_0}$
  496. }
  497.  
  498. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  499. \end{frame}
  500.  
  501.  
  502. \begin{frame}\frametitle{First look at BEC in LCMS}
  503. \begin{columns}
  504. \column{2.5in}
  505. \includegraphics[scale=0.23]{pic2/Qside.png}
  506.  
  507.  
  508. \column{2.5in}
  509. \includegraphics[scale=0.23]{pic2/Qlong.png}
  510.  
  511.  
  512. \end{columns}
  513.  
  514. This is $0.15\%$ of statistics!
  515.  
  516.  
  517.  
  518. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  519. \end{frame}
  520.  
  521.  
  522.  
  523.  
  524.  
  525.  
  526. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  527.  
  528.  
  529.  
  530. \section{$\Lambda_c$ decays}
  531. \begin{frame}\frametitle{Motivation for $\Lambda_c$}
  532.  
  533. \begin{small}
  534. 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 $\Lambda_c$.
  535. \begin{itemize}
  536. \item Decays have different physics motivations:
  537. \end{itemize}
  538. \begin{center}
  539. \begin{tabular}{ l | l }
  540. $\tau \to 3 \mu$ LFV & $\Lambda_c \to 3 \mu$ $|B-L|= 0$ \\
  541. $\tau^{+} \to p \mu^{-} \mu^{+} $ $|B-L|= 0$ & $\Lambda_c^{+} \to p \mu^{-} \mu^{+} $ FCNC \\
  542. $\tau^{+} \to \bar{p} \mu^{+} \mu^{+} $ $|B-L|= 0$ & $\Lambda_c^{+} \to \bar{p} \mu^{+} \mu^{+} $ $|B-L|= 0$ \\
  543. \end{tabular}
  544. \end{center}
  545.  
  546. \begin{itemize}
  547. \item The current limits ($@$ 90\% CL):
  548. \end{itemize}
  549. $\mathcal{B}( \Lambda_c^{+} \to p \mu^{-} \mu^{+} ) < 4.4 \times 10^{-5}$, \footnote{arXiv:1107.4465}
  550. \newline
  551. $\mathcal{B}( \Lambda_c^{+} \to \bar{p} \mu^{+} \mu^{+} ) < 9.4 \times 10^{-6}$
  552. \newline
  553. $\mathcal{B}( \Lambda_c^{+} \to 3 \mu )$ No constraints!
  554. \end{small}
  555.  
  556. \textref {M.Chrz\k{a}szcz 2013}
  557. \end{frame}
  558.  
  559.  
  560.  
  561.  
  562. \begin{frame}\frametitle{First look at new MC}
  563.  
  564.  
  565.  
  566. \includegraphics[scale=0.3]{pic2/Lc_mass.png}
  567.  
  568.  
  569. $mean=2287.46 Mev$\\
  570. $\sigma_1=17.5 Mev$, $\sigma_2=6.5 MeV$
  571.  
  572.  
  573.  
  574. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  575. \end{frame}
  576.  
  577.  
  578.  
  579. \begin{frame}\frametitle{Plans for next week}
  580.  
  581.  
  582. \begin{itemize}
  583. \item Continue background production for $\tau$ and $\Lambda_c$
  584. \item Have a look at isolation paramenter for Lc and tau.
  585. \item Produce all ntuples for Lc.
  586. \item Implement jet algorithm for BEC.
  587.  
  588. \end{itemize}
  589.  
  590. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  591. \end{frame}
  592.  
  593.  
  594.  
  595.  
  596.  
  597.  
  598.  
  599.  
  600. \begin{frame}
  601. \begin{Huge}
  602. BACKUP
  603. \end{Huge}
  604. \textref {M.Chrz\k{a}szcz, N.Serra 2013}
  605. \end{frame}
  606.  
  607.  
  608.  
  609. \begin{frame}
  610.  
  611. \frametitle{Strategy}
  612. {~}
  613. Follow the strategy of $\tau$ analysis:
  614. \begin{itemize}
  615. \item Take prompt $\Lambda_c$, separate approach to SL.
  616. \item Loose cut preselection.
  617. \item Train MVA on MC prompt signal and recalibrate on data.
  618. \item Mass resolution we expect similar to $\tau$. $15 MeV$ for $3 \mu$ and $9 MeV$ for $p \mu \mu$. Mean recalibrated from data.
  619. \item Normalize to $\Lambda_c^{+} \to p K^{-} \pi^{+}$, or $\Lambda_c^{+} \to p \pi^{-} \pi^{+}$.
  620. \item Optimise the binning in MVA.
  621. \item CLs method for limit.
  622. \end{itemize}
  623. \textref {M.Chrz\k{a}szcz 2013}
  624. \end{frame}
  625.  
  626. %\section{Comparison $\Lambda_c$ vs $\tau$}
  627. \begin{frame}\frametitle{Comparison $\Lambda_c$ vs $\tau$}
  628. \colorbox{green}{Strong sides of $\Lambda_c$:}
  629.  
  630.  
  631. \begin{itemize}
  632. \item {No SM background in $3 \mu$ case ($\PDs \to \eta(\mu\mu\gamma) \mu \nu$)}
  633. \item {Smaller combinatorial background than in $\tau$ decays. \Simley{1} }
  634. %\item {Better prospers of observing something. Rare is better than forbidden \Simley{1} }
  635. \end{itemize}
  636.  
  637. \colorbox{red}{Weaker sides of $\Lambda_c$:}
  638. \begin{itemize}
  639. \item {Smaller no. of $\Lambda_c$ than $\tau$ to begin with.}
  640. \item {Need to study very carefully $\Lambda_c$ production and backgrounds. }
  641. \Simley{-1}
  642.  
  643. \end{itemize}
  644.  
  645.  
  646.  
  647. \textref {M.Chrz\k{a}szcz 2013}
  648. \end{frame}
  649.  
  650. %\section{Work done so far}
  651. \begin{frame}\frametitle{Work done so far}
  652. \begin{itemize}
  653. \item $\Lambda_c \to p \mu \mu$ is already stripped(line was with $\tau$ line all along).
  654. \item $\Lambda_c \to 3\mu$ is being stripped in incremental stripping.
  655. \item Requested 1M signal samples. Production will today most likely.
  656. \item Background studies.
  657.  
  658. \end{itemize}
  659.  
  660. \textref {M.Chrz\k{a}szcz 2013}
  661. \end{frame}
  662.  
  663.  
  664. \begin{frame}\frametitle{Possible background}
  665.  
  666. \begin{center}
  667.  
  668. \begin{tabular}{| c | c | c |}
  669. \hline
  670. \textbf{ Resonance} & $\mathcal{B} (\lambda_c \to p X)$& $\mathcal{B} (X \to \mu \mu)$\\ \hline
  671. $\eta$ & UNKNOWN & $(5.8 \pm 0.6) \times 10^{-6}$ \\ \hline
  672. $\rho^0$ & UNKNOWN & $(4.55 \pm 0.28) \times 10^{-5}$ \\ \hline
  673. $\omega$ & UNKNOWN & $(9.1 \pm 3.0) \times 10^{-5}$ \\ \hline
  674. $f(980)$ & $(2.8 \pm 1.9) \times 10^{-3}$ & UNKNOWN \\ \hline
  675. $\phi$ & $(8.2 \pm 2.7) \times 10^{-4} $ & $(2.89 \pm 0.19) \times 10^{-4}$ \\ \hline \hline
  676. \textbf{ Resonance} & $\mathcal{B} (\lambda_c \to p X)$ & $\mathcal{B} (X \to \mu \mu \gamma)$\\ \hline
  677. $\eta$ & UNKNOWN & $(3.1 \pm 0.4) \times 10^{-4}$ \\ \hline
  678. \end{tabular}
  679. \end{center}
  680.  
  681.  
  682. \textref {M.Chrz\k{a}szcz 2013}
  683. \end{frame}
  684.  
  685.  
  686.  
  687.  
  688.  
  689. \begin{frame}\frametitle{$\Lambda_c$ production mechanism}
  690.  
  691. \begin{center}
  692.  
  693. \begin{tabular}{| c | c |}
  694. \hline
  695. \textbf{ Process} & $\mathcal{B} (X \to \lambda_c Y)$ \\ \hline
  696. $\Lambda_B \to \Lambda_c^+ \pi^{-}$ & $0.0088 \pm 0.0032$ \\ \hline
  697. $\Lambda_B \to \Lambda_c^+ \Pl \nu$ & $0.05 \pm 0.014$ \\ \hline
  698. $\Lambda_B \to \Lambda_c^+ \Pl \nu \pi \pi $ & $0.056 \pm 0.031$ \\ \hline
  699. $B \to \Lambda_c^+ \Pp \pi \pi^0 $ & $(1.8 \pm 0.6) \times 10^{-3}$ \\ \hline
  700. $B \to \Lambda_c^+ \Pp \pi \pi \pi $ & $(2.3 \pm 0.7) \times 10^{-3}$ \\ \hline
  701. $B \to \Lambda_c^+ \Lambda_c^- K^+ $ & $(8.7 \pm 3.5) \times 10^{-4}$ \\ \hline
  702. $B \to \Sigma(2455) \Pproton \pi^0 $ & $(4.4 \pm 1.8) \times 10^{-4}$ \\ \hline
  703. $B \to \Sigma(2455) \Pproton \pi \pi $ & $(4.4 \pm 1.7) \times 10^{-4}$ \\ \hline
  704. $B \to \Sigma(2455)^{--} \Pproton \pi \pi $ & $(2.8 \pm 1.2) \times 10^{-4}$ \\ \hline
  705. \hline
  706. \end{tabular}
  707. \end{center}
  708.  
  709.  
  710. \textref {M.Chrz\k{a}szcz 2013}
  711. \end{frame}
  712.  
  713.  
  714.  
  715.  
  716. \end{document}