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@mchrzasz mchrzasz on 29 Apr 2015 19 KB final presentation
  1. \documentclass[xcolor=svgnames]{beamer}
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  11. \usepackage{hepnicenames}
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  13. \usepackage{color}
  14.  
  15. \usepackage{braket}
  16.  
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  18. \definecolor{mygreen}{cmyk}{0.82,0.11,1,0.25}
  19.  
  20.  
  21. %--------------------------------------------------------------------
  22. % Introduction
  23. %--------------------------------------------------------------------
  24. \usetheme{Sybila}
  25. \placelogotrue
  26. \title[Recent BaBar results on CP violation in B-meson decays]{ Recent BaBar results on CP violation in B-meson decays}
  27. \author{Marcin Chrz\k{a}szcz$^{1}$ \\ \footnotesize{on behalf of the BaBar collaboration}}
  28. \institute{$^1$~University of Zurich \\{~}\\ Deep-Inelastic Scattering 2015 }
  29. \date{30 April, 2015}
  30. \begin{document}
  31. % --------------------------- SLIDE --------------------------------------------
  32. \frame[plain]{\titlepage}
  33. \author{Marcin Chrz\k{a}szcz}
  34. % ------------------------------------------------------------------------------
  35. % --------------------------- SLIDE --------------------------------------------
  36. \institute{~(UZH)}
  37.  
  38. \section[Outline]{}
  39. \begin{frame}
  40. %\tableofcontents
  41. %FIXME!
  42. \begin{enumerate}
  43. \item BaBar detector
  44. \item CP asymmetries with inclusive dilepton measurement.
  45. \item CP asymmetries in FCNC:
  46. \begin{itemize}
  47. \item $\Pbeauty \to \Pstrange \Pphoton$
  48. \item $\Pbeauty \to \Pstrange \Plepton \Plepton$
  49. \end{itemize}
  50. \item Conclusions
  51. \end{enumerate}
  52. \end{frame}
  53.  
  54. % --------------------------- SLIDE --------------------------------------------
  55. \section{BaBar Detector}
  56. \begin{frame}\frametitle{BaBar Detector}
  57.  
  58. \begin{columns}
  59. \column{2.5in}
  60. \begin{itemize}
  61. \item PEP-II, an asymmetric $\Pelectron \APelectron$ collider.
  62. \item Operating mostly at $\PUpsilon(4S)$ threshold.
  63. \end{itemize}
  64. \includegraphics[width=0.95\textwidth]{images/bbr_det.png}
  65. \column{2.5in}
  66. \includegraphics[width=0.95\textwidth]{images/bbr_lumi.png}
  67.  
  68. \end{columns}
  69. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  70.  
  71.  
  72. \end{frame}
  73.  
  74. \begin{frame}\frametitle{B factories}
  75.  
  76. \begin{columns}
  77. \column{2.5in}
  78.  
  79. \includegraphics[width=0.95\textwidth]{images/upsilon1.png}\\
  80. \includegraphics[width=0.95\textwidth]{images/topo.png}
  81. \column{2.5in}
  82. \begin{itemize}
  83. \item $\PB$ mesons produced in a clean environment.
  84. \item Just above the $m(\PB \APB)$ threshold.
  85. \item Thanks to knowing the beam energy we have additional discriminating variable: $\Delta E = E_{\PB} -E_{beam}$
  86. \end{itemize}
  87. \includegraphics[width=0.95\textwidth]{images/ee_col.png}
  88.  
  89. \end{columns}
  90. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  91.  
  92.  
  93. \end{frame}
  94. \section{CP violation in $\PB \APB$ mixing}
  95. \begin{frame}\frametitle{$\PBzero \APBzero$ mixing}
  96.  
  97. \begin{itemize}
  98. \item Neutral mesons couple to their anti particles via weak interactions.
  99.  
  100. \end{itemize}
  101.  
  102. \begin{columns}
  103. \column{3.4in}
  104.  
  105. \begin{itemize}
  106. \item $\PBzero \Leftrightarrow \APBzero$, $\PBs \Leftrightarrow \APBs$, $\PDzero \Leftrightarrow \APDzero$, $\PK \Leftrightarrow \APK$.
  107. \item We can writhe the weak eigenstates as:
  108. \end{itemize}
  109. \begin{equation*}
  110. \ket{B_{L/H}} = \dfrac{1}{\sqrt{p^2+q^2}} (p \ket{\PBzero} \pm q \ket{\APBzero})
  111. \end{equation*}
  112. \begin{itemize}
  113. \item Then the CP asymmetry can can be written as:
  114. \end{itemize}
  115. \begin{equation*}
  116. A_{CP} = \dfrac{\mathcal{P}(\APBzero \to \PBzero) - \mathcal{P}(\PBzero \to \APBzero) }{\mathcal{P}(\APBzero \to \PBzero) + \mathcal{P}(\PBzero \to \APBzero)}\approx 2(1-|\frac{q}{p}|)
  117. \end{equation*}
  118. \column{1.5in}
  119. \begin{center}
  120. \includegraphics[width=0.99\textwidth]{images/Bmixing_dia.png}
  121. \end{center}
  122.  
  123. \end{columns}
  124. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  125. \begin{itemize}
  126. \item $\PUpsilon(4S)$ has an anti-symmetric state: $\dfrac{1}{\sqrt{2}} (\PBzero(t_1) \APBzero(t_2) - \APBzero(t_1) \PBzero(t_2))$
  127. \item One $\PB$ is a specific flavour state tags the other one.
  128. \end{itemize}
  129.  
  130. \end{frame}
  131. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  132. \begin{frame}\frametitle{Inclusive dilepton measurement}
  133. \begin{itemize}
  134. \item $\PB$ mesons decay in $\sim 10\%$ semileptonically.
  135. \item Charge of lepton determines the $\PB$ meson flavour.
  136. \item If one observes same sign leptons $\to$ mixing occurred ($\Plepton\Plepton \in \lbrace \Pe \Pe, \Pmu \Pmu \rbrace$)
  137. \end{itemize}
  138. \begin{columns}
  139.  
  140. \column{0.5in}
  141. {~}
  142. \column{2.5in}
  143. \begin{itemize}
  144. \item $\Plepton^- \Plepton^{+}$: no mixing
  145. \item $\Plepton^- \Plepton^{-}$: $\PBzero \to \APBzero$.
  146. \item $\Plepton^+ \Plepton^{+}$: $\APBzero \to \PBzero$.
  147. \end{itemize}
  148. \column{2in}
  149. \includegraphics[width=0.65\textwidth]{images/semillep.png}
  150.  
  151. \end{columns}
  152. \begin{itemize}
  153. \item Writing down the mixing probabilities~(time integrated):
  154. \end{itemize}
  155. \begin{equation*}
  156. \mathcal{P}^{\pm \pm} \propto (1 \pm A_{CP}) \chi_d
  157. \end{equation*}
  158. \begin{equation*}
  159. \mathcal{P}^{\pm \mp} \propto (1 -\chi_d),
  160. \end{equation*}
  161. where $A_{CP}$ is the CP asymmetry and $\chi_d$ is the effective mixing probability.\\
  162. \begin{itemize}
  163. \item SM: $A_{CP} \sim \mathcal{O}(10^{-4})$, NP can enhance significantly $A_{CP}$.
  164. \end{itemize}
  165.  
  166.  
  167. \end{frame}
  168. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  169. \begin{frame}\frametitle{Detector effects}
  170. \begin{footnotesize}
  171.  
  172.  
  173. \begin{itemize}
  174. \item Detector is not a perfect device $\to$ Introduced charge asymmetries $a_{\Plepton_j}$ for each $\Plepton_j$.
  175. \item $\PUpsilon(4S)$ also goes to $\PBplus \PBminus$. Contribution: $r_B = N_{\PB^+ \PB^-}/N_{\PBzero \APBzero}$.
  176. \item Time integrated probability gets modified:
  177.  
  178. \begin{align*}
  179. \mathcal{P}^{\pm \pm} \propto (1 \pm a_{\Plepton_1} \pm a_{\Plepton_2} \pm A_{CP}) \chi_d \\
  180. \mathcal{P}^{\pm \mp} \propto (1 -\chi_d + r_B)(1 \pm a_{\Plepton_1} \mp a_{\Plepton_2} )
  181. \end{align*}
  182. \item Summing over all events in $\Plepton_1 \Plepton_2 \in \lbrace \Pe \Pe, \Pe \Pmu, \Pmu \Pe, \Pmu \Pmu \rbrace$ categories:
  183.  
  184. \begin{align*}
  185. N^{\pm \pm}_{\Plepton_1 \Plepton_2} = 1/2 N^0_{\Plepton_1 \Plepton_2} (1 \pm a_{\Plepton_1} \pm a_{\Plepton_2} \pm A_{CP}) \chi_d^{\Plepton_1 \Plepton_2}\\
  186. N^{\pm \mp}_{\Plepton_1 \Plepton_2}= 1/2 N^0_{\Plepton_1 \Plepton_2} (1 -\chi_d^{\Plepton_1 \Plepton_2} + r_B)(1 \pm a_{\Plepton_1} \mp a_{\Plepton_2} )
  187. \end{align*}
  188.  
  189. \item We have 16 observables, and 13 unknowns. $a_{\Plepton_j}$ highly correlated.
  190. \item Adding additional observable: events containing only single electron ($a_{\Pe}$).
  191. \item 17 observables as input to $\chi^2$ fit, extracting: $A_{CP}$, 4 signal yields,\\ 4 efficiency asymmetries, 4 mixing probabilities.
  192. \end{itemize}
  193.  
  194.  
  195.  
  196.  
  197. \end{footnotesize}
  198.  
  199. \end{frame}
  200. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  201. \placelogofalse
  202.  
  203. \begin{frame}\frametitle{Event selection}
  204. \begin{itemize}
  205. \item Item select an isotropic events with $\geq 4$ tracks.
  206. \item Each lepton track should have $p >0.6~\GeVoverc$.
  207. \item Hard requirements on the $\Pe$, $\Pmu$ PID selection.
  208. \begin{itemize}
  209. \item $\epsilon_e \sim 93\%$, $\epsilon_{\mu} ~40-80\%$.
  210. \item MissID: $\mathcal{P}(h\to e) <0.1\%$, $\mathcal{P}(h\to \mu) \sim 1\%$.
  211. \end{itemize}
  212. \item Veto $\PJpsi$, $\Ppsi(2S)$ and photon conversion.
  213. \end{itemize}
  214. \begin{columns}
  215. \column{2in}
  216. \begin{itemize}
  217. \item $\Delta t$ is calculated from the separation
  218. of the two POCAs along the beam direction and the c.m. boost ($\beta\gamma=0.56$).
  219. \item $\Delta t< 15~\rm{ps}$ and $\sigma \Delta t <3~\rm{ps}$
  220. \end{itemize}
  221. \column{3in}
  222. \includegraphics[width=0.95\textwidth]{images/POCA.png}
  223. \end{columns}
  224.  
  225.  
  226.  
  227. \end{frame}
  228.  
  229. \placelogotrue
  230. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  231. \begin{frame}\frametitle{Systematics}
  232. \begin{columns}
  233. \column{2.5in}
  234. \includegraphics[width=0.95\textwidth]{images/table.png}
  235. \column{2.3in}
  236. \begin{itemize}
  237. \item Dominant systematic from bias in MC.
  238. \item Secondly the MC/data corrections to PID.
  239. \item Difference in charge asymmetry between $\PBzero$ and average of $\PBzero$ and $\PB^{\pm}$.
  240. \end{itemize}
  241.  
  242. \end{columns}
  243.  
  244.  
  245. \end{frame}
  246.  
  247.  
  248.  
  249.  
  250. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  251. \begin{frame}\frametitle{Fit results}
  252. \begin{center}
  253. \begin{footnotesize}
  254.  
  255. \begin{tabular}{c c c c}
  256. \hline \hline
  257. \multicolumn{2}{c}{$A_{CP} = (-3.9 \pm 3.5)\times 10^{-3}$} & \multicolumn{2}{c}{ \includegraphics[height=0.5cm]{images/Babar_with_banner.jpg}~\href{http://arxiv.org/abs/1411.1842}{\color{blue}{PRL 114, 081801 (2015)}} }\\ \hline %\hline
  258. $N^0_{\Pe\Pe}$ & $N^0_{\Pe\Pmu}$ & $N^0_{\Pmu\Pe}$ & $N^0_{\Pmu\Pmu}$ \\
  259. $430875 \pm 515$ & $365343 \pm 429$ & $458200 \pm 480$ & $268077 \pm 381$ \\
  260. $\chi_d^{\Pe\Pe}$ & $\chi_d^{\Pe\Pmu}$ & $\chi_d^{\Pmu\Pe}$ & $\chi_d^{\Pmu\Pmu}$ \\
  261. $0.2248 \pm 0.0006$ & $0.1769 \pm 0.0006$ & $0.1754 \pm 0.0005$ & $0.2032 \pm 0.0007$ \\
  262. $a^{\Pe 1}$ & $a^{\Pe 2}$ & $a^{\Pmu 1}$ & $a^{\Pmu 2}$ \\
  263. $0.0034 \pm 0.0006$ & $0.0030 \pm 0.006$ & $-0.0056 \pm 0.0011$ & $-0.0065 \pm 0.0011$ \\ \hline
  264. \end{tabular}
  265. {~}\\
  266. \begin{columns}
  267. \column{0.5in}{~}
  268. \column{2.5in}
  269. \includegraphics[width=0.75\textwidth]{images/pull.png}
  270. \begin{itemize}
  271. \item Result $A_{CP} = (-3.9 \pm 3.5 \pm 1.9 )\times 10^{-3}$ in agreement with SM.
  272. \end{itemize}
  273. \column{2.5in}
  274. \includegraphics[width=0.76\textwidth]{images/hfag.png}
  275. \end{columns}
  276.  
  277. \end{footnotesize}
  278. \end{center}
  279.  
  280.  
  281. \end{frame}
  282. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  283. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  284. \begin{frame}\frametitle{Flavour-changing neutral current}
  285. \begin{itemize}
  286. \item CKM structure in SM allows only the charged interactions to change flavour.
  287. \item One can escape the CKM structure and produce $\Pbottom \to \Pstrange$ and $\Pbottom \to \Pdown$ only at loop level.
  288. \begin{itemize}
  289. \item This kind of process are suppressed by the GIM in SM $\to$~Rare decays.
  290. \end{itemize}
  291. \item LHCb already sees a $3.7~\sigma$ deviation in the angular observables in $\PBzero \to \PKstar \Pmuon \APmuon$. See my talk: \href{https://indico.cern.ch/event/341292/session/15/contribution/40}{\color{blue}LINK}.
  292. \item Here we present CP observables in $\Pbeauty \to \Pstrange \Pphoton$ and $\Pbeauty \to \Pstrange \Plepton \Plepton$ decays.
  293. \item SM prediction $\sim 0$
  294. \end{itemize}
  295. \end{frame}
  296. \placelogofalse
  297. \begin{frame}\frametitle{CP asymmetries in $\PB \to X_s \Pphoton$}
  298. \begin{itemize}
  299. \item Fully inclusive approach impossible.
  300. \item Instead use semi-inclusive ( sum of exclusive modes).
  301. \item 16 modes used (marked with $ \ast$)
  302. \item Additional requirements:
  303. \end{itemize}
  304.  
  305. \begin{columns}
  306. \column{2in}
  307. \begin{itemize}
  308. \item \href{http://arxiv.org/abs/1406.0534}{\color{blue}{PRD 90, 092001 (2014)}}
  309. \item Requirements:
  310. \begin{itemize}
  311. \item $m(X_s) \in (0.6,2.0)~\GeV$
  312. \begin{itemize}
  313. \item Indirect cut on $E_{\gamma} >2.3~\GeV$
  314. \end{itemize}
  315. \item $|\Delta E| <0.15~\GeV$
  316. \item MVA based approach to get ride of $q\bar{q}$ background.
  317. \end{itemize}
  318. \end{itemize}
  319.  
  320. \column{3in}
  321. \begin{tiny}
  322.  
  323. \begin{tabular}{l l | l l}
  324. \hline
  325. {~} & Final State & {~} &Final State\\
  326. \hline
  327. \hline
  328. 1* & $B^{+}\rightarrow K_{S}\pi^{+}\gamma$ & 20 & $B^{0}\rightarrow K_{S}\pi^{+}\pi^{-}\pi^{+}\pi^{-}\gamma$\\
  329. 2* & $B^{+}\rightarrow K^{+}\pi^{0}\gamma$ & 21 & $B^{0}\rightarrow K^{+}\pi^{+}\pi^{-}\pi^{-}\pi^{0}\gamma$\\
  330. 3* & $B^{0}\rightarrow K^{+}\pi^{-}\gamma$ & 22 & $B^{0}\rightarrow K_{S}\pi^{+}\pi^{-}\pi^{0}\pi^{0}\gamma$\\
  331. 4 & $B^{0}\rightarrow K_{S}\pi^{0}\gamma$ & 23* & $B^{+}\rightarrow K^{+}\eta\gamma$\\
  332. 5* & $B^{+}\rightarrow K^{+}\pi^{+}\pi^{-}\gamma$ & 24 & $B^{0}\rightarrow K_{S}\eta\gamma$\\
  333. 6* & $B^{+}\rightarrow K_{S}\pi^{+}\pi^{0}\gamma$ & 25 & $B^{+}\rightarrow K_{S}\eta\pi^{+}\gamma$\\
  334. 7* & $B^{+}\rightarrow K^{+}\pi^{0}\pi^{0}\gamma$ & 26 & $B^{+}\rightarrow K^{+}\eta\pi^{0}\gamma$\\
  335. 8 & $B^{0}\rightarrow K_{S}\pi^{+}\pi^{-}\gamma$ & 27* & $B^{0}\rightarrow K^{+}\eta\pi^{-}\gamma$\\
  336. 9* & $B^{0}\rightarrow K^{+}\pi^{-}\pi^{0}\gamma$ & 28 & $B^{0}\rightarrow K_{S}\eta\pi^{0}\gamma$\\
  337. 10 & $B^{0}\rightarrow K_{S}\pi^{0}\pi^{0}\gamma$ & 29 & $B^{+}\rightarrow K^{+}\eta\pi^{+}\pi^{-}\gamma$\\
  338. 11* & $B^{+}\rightarrow K_{S}\pi^{+}\pi^{-}\pi^{+}\gamma$ & 30 & $B^{+}\rightarrow K_{S}\eta\pi^{+}\pi^{0}\gamma$\\
  339. 12* & $B^{+}\rightarrow K^{+}\pi^{+}\pi^{-}\pi^{0}\gamma$ & 31 & $B^{0}\rightarrow K_{S}\eta\pi^{+}\pi^{-}\gamma$\\
  340. 13* & $B^{+}\rightarrow K_{S}\pi^{+}\pi^{0}\pi^{0}\gamma$ & 32 & $B^{0}\rightarrow K^{+}\eta\pi^{-}\pi^{0}\gamma$\\
  341. 14* & $B^{0}\rightarrow K^{+}\pi^{+}\pi^{-}\pi^{-}\gamma$ & 33* & $B^{+}\rightarrow K^{+}K^{-}K^{+}\gamma$\\
  342. 15 & $B^{0}\rightarrow K_{S}\pi^{0}\pi^{+}\pi^{-}\gamma$ & 34 & $B^{0}\rightarrow K^{+}K^{-}K_{S}\gamma$\\
  343. 16* & $B^{0}\rightarrow K^{+}\pi^{-}\pi^{0}\pi^{0}\gamma$ & 35 & $B^{+}\rightarrow K^{+}K^{-}K_{S}\pi^{+}\gamma$\\
  344. 17 & $B^{+}\rightarrow K^{+}\pi^{+}\pi^{-}\pi^{+}\pi^{-}\gamma$ & 36 & $B^{+}\rightarrow K^{+}K^{-}K^{+}\pi^{0}\gamma$\\
  345. 18 & $B^{+}\rightarrow K_{S}\pi^{+}\pi^{-}\pi^{+}\pi^{0}\gamma$ & 37* & $B^{0}\rightarrow K^{+}K^{-}K^{+}\pi^{-}\gamma$\\
  346. 19 & $B^{+}\rightarrow K^{+}\pi^{+}\pi^{-}\pi^{0}\pi^{0}\gamma$ & 38 & $B^{0}\rightarrow K^{+}K^{-}K_{S}\pi^{0}\gamma$\\
  347. \hline
  348. \end{tabular}
  349.  
  350. \end{tiny}
  351.  
  352. \end{columns}
  353. \end{frame}
  354. % \placelogotrue
  355. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  356. \begin{frame}\frametitle{Asymmetry extraction}
  357. \begin{itemize}
  358. \item Asymmetry for fitted yields needs to be corrected as in previous analysis detector asymmetries.
  359. \item Asymmetry extracted from side-bands.
  360. \begin{itemize}
  361. \item $(-1.4 \pm 0.7)~\%$.
  362. \end{itemize}
  363. \end{itemize}
  364. \includegraphics[width=0.91\textwidth]{images/side.png}
  365.  
  366.  
  367.  
  368. \begin{columns}
  369. \column{3.1in}
  370. {~}{~} $A_{CP} \simeq 0.12 \times \dfrac{\Lambda_{78}}{100~\MeV} \rm{Im} \dfrac{C_{8g}}{C_{7\gamma}}$
  371. \begin{itemize}
  372. \item Results:
  373. \begin{itemize}
  374. \item $A_{CP}(\PBplus \to X_s^+ \Pphoton) = (4.23 \pm 2.93 \pm 0.95)\%$
  375. \item $A_{CP}(\PBzero \to X_s^0 \Pphoton) = (-0.74 \pm 2.57 \pm 1.10)\%$
  376. \item Average:
  377. \item $A_{CP} = (1.7 \pm 1.9 \pm 1.0)~\%$
  378. \item SM: $A_{CP} \sim 0 \leftrightarrow Im(C_8) \sim 0$
  379. \end{itemize}
  380. \end{itemize}
  381.  
  382. \column{2in}
  383.  
  384. \includegraphics[width=0.9\textwidth]{images/im87.pdf}
  385. \end{columns}
  386. \end{frame}
  387. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  388. \begin{frame}\frametitle{CP asymmetries in $\PB \to X_s \Plepton \Plepton$}
  389. \begin{itemize}
  390. \item Very important channel for NP searches.
  391. \item Significant deviation found by LHCb.
  392. \item CP observables are very clean predictions in SM and almost QCD free.
  393. \item Similar ''semi-inclusive'' modes: \begin{align*}
  394. X_s= \lbrace \PK^+,~\PK^+\pi^0,~ \PK^+\pi^-,~\PK^+\pi^-\pi^0,\\ ~\PK^+\pi^-\pi^+,~\PK_s,~\PK_s\pi^+, ~\PK_s\pi^+\pi^0,~\PK_s\pi^+\pi^-\rbrace
  395. \end{align*}
  396. \item Look for two leptons flavours: $\Plepton \Plepton = \lbrace \Pe \Pe, \Pmu \Pmu \rbrace$
  397. \item Additional requirements:
  398. \begin{itemize}
  399. \item Require: $m(X_s) < 1.8~\GeV$
  400. \item $\Delta E \in [ -0.1 (-0.05), 0.05 ]~\GeV$ for $\Plepton \Plepton = \Pe \Pe~( \Pmu \Pmu)$
  401. \end{itemize}
  402. \end{itemize}
  403.  
  404. \end{frame}
  405. \placelogotrue
  406. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  407. \begin{frame}\frametitle{Differential branching fraction}
  408. %\begin{columns}
  409. %\column{2.8in}
  410. \begin{itemize}
  411. \item \href{http://arxiv.org/abs/1312.5364}{\color{blue}{PRL 112 (2014) 211802}}
  412. \item $\PJpsi,~(\Ppsi(2S))$ veto: $6.8-10.1~(12.9-14.2)~\GeV$
  413. \item Suppress $q\bar{q}$ background with a BDT.
  414.  
  415. \item Perform a simultaneous fit to $m_{ES}$ and $L_R= \dfrac{\mathcal{P}_S}{\mathcal{P}_S+\mathcal{P}_B}$
  416. \end{itemize}
  417. %\column{2.2in}
  418. \includegraphics[width=0.69\textwidth]{images/ee_bin0.png}\\
  419. \includegraphics[width=0.73\textwidth]{images/mumu_bin0.png}
  420.  
  421. %\end{columns}
  422.  
  423. \end{frame}
  424. \placelogofalse
  425. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  426. \begin{frame}\frametitle{CP \& BR asymmetries results}
  427. \begin{columns}
  428. \column{2.5in}
  429. \begin{footnotesize}
  430. \begin{tabular}{|c|c|}
  431. \hline
  432. $q^2~[\GeV^2] $ & $A_{CP}$ \\ \hline \hline
  433. $1.0 < q^{2} < 6.0$ & $-0.06 \pm 0.22 \pm 0.01$ \\ \hline
  434. $0.1 < q^{2} < 2.0$ & $-0.13 \pm 0.18 \pm 0.01$ \\ \hline
  435. $2.0 < q^{2} < 4.3$ & $\: 0.42 \: \: {}_{-0.42}^{+0.50} \pm 0.01$ \\ \hline
  436. $4.3 < q^{2} < 6.8$ & $\! \! -0.45_{-0.57}^{+0.44} \pm 0.01$ \\ \hline
  437. $10.1< q^{2} <14.2$* & $0.19 \: \: {}_{-0.17}^{+0.18} \pm 0.01$ \\ \hline
  438. \end{tabular}
  439. \begin{itemize}
  440. \item Measured branching fractions($\times 10^{-6}$) :
  441. \begin{equation*}
  442. \mathcal{B}(\PB \to X_s \Pelectron \APelectron) = 7.69^{+0.82}_{-0.77}{}^{+0.50}_{-0.33} \pm 0.50
  443. \end{equation*}
  444. \begin{equation*}
  445. \mathcal{B}(\PB \to X_s \Pelectron \APelectron) = 4.41^{+1.31}_{-1.17}{}^{+0.57}_{-0.42} \pm 0.27
  446. \end{equation*}
  447. \item Combined:
  448. \begin{equation*}
  449. \mathcal{B}(\PB \to X_s \Plepton^- \Plepton^+ ) = 6.73^{+0.70}_{-0.64}{}^{+0.34}_{-0.25} \pm 0.50
  450. \end{equation*}
  451. \item In agreement with SM.
  452. \end{itemize}
  453. {~}{~}* Excluding $\Ppsi(2S)$ region.
  454. \end{footnotesize}
  455.  
  456.  
  457.  
  458. \column{2.5in}
  459. \begin{itemize}
  460. \item \color{blue}{electrons}, \color{black}{muons}, \color{red}{combined}
  461. \end{itemize}
  462. \includegraphics[width=0.9\textwidth]{images/results-q2.png}\\
  463. \includegraphics[width=0.9\textwidth]{images/ACP.png}
  464. \end{columns}
  465.  
  466. \end{frame}
  467. \placelogotrue
  468. %%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  469.  
  470. \begin{frame}\frametitle{Conclusions}
  471. \begin{enumerate}
  472. \item B-factories still producing new results.
  473. \item Presented new measurements of CP violation in neutral $\PB$ meson system using inclusive dileptons events.
  474. \item BaBar continues to chase FCNC with measurement of CP asymmetries in: $\Pbeauty \to \Pstrange \gamma$ and $\Pbeauty \to \Pstrange \Plepton \Plepton$
  475. \item FCNC statistically limited: need future experiments.
  476. \item All measurements consistent (for now?) with SM.
  477. \end{enumerate}
  478. \begin{center}
  479. \includegraphics[width=0.45\textwidth]{images/digging-for-diamonds.png}
  480. \end{center}
  481. \end{frame}
  482.  
  483. \end{document}