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Presentations / DIS2015 / Rare_decays / mchrzasz.tex
@mchrzasz mchrzasz on 28 Apr 2015 19 KB talk about RD you gave on DIS
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  28.  
  29. % see the macros.tex file for definitions
  30.  
  31.  
  32.  
  33. \renewcommand{\PKs}{{\HepParticle{K}{S}{}\xspace}}
  34. \newcommand{\at}{\makeatletter @\makeatother}
  35.  
  36. %--------------------------------------------------------------------
  37. % Introduction
  38. %--------------------------------------------------------------------
  39.  
  40. \usetheme{Sybila}
  41.  
  42. \title[ Rare beauty and charm decays at LHCb]{ Rare beauty and charm decays at LHCb}
  43. \author{Marcin Chrz\k{a}szcz$^{1}$ \\ \footnotesize{on behalf of the LHCb collaboration}}
  44. \institute{$^1$~University of Zurich \\{~}\\ Deep-Inelastic Scattering 2015 }
  45. \date{\today}
  46. \begin{document}
  47. % --------------------------- SLIDE --------------------------------------------
  48. \frame[plain]{\titlepage}
  49. \author{Marcin Chrz\k{a}szcz}
  50. % ------------------------------------------------------------------------------
  51. % --------------------------- SLIDE --------------------------------------------
  52.  
  53. \institute{~(UZH)}
  54.  
  55. %--------------------------------------------------------------------
  56. % OUTLINE
  57. %--------------------------------------------------------------------
  58.  
  59.  
  60. \section[Outline]{}
  61. \begin{frame}
  62. %\tableofcontents
  63. %FIXME!
  64. \begin{enumerate}
  65. \item Rare $\PB$ decays:
  66. \begin{itemize}
  67. \item $\PB \to \PK \Ppi \Ppi \Pphoton$
  68. \item $\PB \to \mu \mu$.
  69. \item $\Pbeauty \to \Pstrange \Plepton \Plepton$.
  70. \end{itemize}
  71. \item Charm decays:
  72. \begin{itemize}
  73. \item $\PD \to \mu \mu$.
  74. \end{itemize}
  75. \end{enumerate}
  76.  
  77. \end{frame}
  78.  
  79. %-------------------------------------------------------------------
  80. % Introduction
  81. %-------------------------------------------------------------------
  82. %
  83. % Set the background for the rest of the slides.
  84. % Insert infoline
  85. %\setbeamertemplate{background}
  86. % {\includegraphics[width=\paperwidth,height=\paperheight]{slide_bg}}
  87. %\setbeamertemplate{footline}[bunsentheme]
  88.  
  89.  
  90.  
  91. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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  96. %\setbeamertemplate{footline}[bunsentheme]
  97. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  98. %\section{LHCb detector}
  99.  
  100. %\begin{frame}\frametitle{LHCb detector}
  101. %\begin{columns}
  102. %\column{3.in}
  103. %\begin{center}
  104. %\includegraphics[width=0.98\textwidth]{det.jpg}
  105. %\end{center}
  106.  
  107. %\column{2.0in}
  108. %\begin{footnotesize}
  109.  
  110.  
  111. % LHCb is a forward spectrometer:
  112. % \begin{itemize}
  113. % \item Excellent vertex resolution.
  114. % \item Efficient trigger.
  115. % \item High acceptance for $\Ptau$ and $\PB$.
  116. % \item Great Particle ID
  117. % \end{itemize}
  118.  
  119.  
  120. %\end{footnotesize}
  121. %\end{columns}
  122.  
  123. %\end{frame}
  124.  
  125. \section{Introduction}
  126.  
  127. \begin{frame}\frametitle{Why rare decays?}
  128. \begin{columns}
  129. \column{4in}
  130. \begin{itemize}
  131. \item CKM structure in SM allows only the charged interactions to change flavour.
  132. \begin{itemize}
  133. \item Other interactions are flavour conserving.
  134. \end{itemize}
  135. \item One can escape the CKM structure and produce $\Pbottom \to \Pstrange$ and $\Pbottom \to \Pdown$ only at loop level.
  136. \begin{itemize}
  137. \item This kind of processes are suppressed in SM $\to$~Rare decays.
  138. \end{itemize}
  139. \end{itemize}
  140. \begin{center}
  141. \includegraphics[scale=0.3]{hql/lupa.png}
  142. \includegraphics[scale=0.3]{hql/example.png}
  143. \end{center}
  144. \column{1.5in}
  145. \includegraphics[width=0.62\textwidth]{hql/couplings.png}
  146. \end{columns}
  147.  
  148. \end{frame}
  149.  
  150. \begin{frame}\frametitle{Tools}
  151. \begin{itemize}
  152. \item \textbf{Operator Product Expansion and Effective Field Theory}
  153. \end{itemize}
  154. \begin{columns}
  155. \column{0.1in}{~}
  156. \column{3.2in}
  157. \begin{align*}
  158. H_{eff} = - \dfrac{4G_f}{\sqrt{2}} V V^{\ast} \sum_i \left[\underbrace{C_i(\mu)O_i(\mu)}_\text{left-handed} +\underbrace{C'_i(\mu)O'_i(\mu)}_\text{right-handed}\right]
  159. \end{align*}
  160.  
  161. \column{2in}
  162. \begin{tiny}
  163. \begin{description}
  164. \item[i=1,2] Tree
  165. \item[i=3-6,8] Gluon penguin
  166. \item[i=7] Photon penguin
  167. \item[i=9.10] EW penguin
  168. \item[i=S] Scalar penguin
  169. \item[i=P] Pseudoscalar penguin
  170. \end{description}
  171.  
  172. \end{tiny}
  173. \end{columns}
  174. \begin{center}
  175. \includegraphics[width=0.85\textwidth,height=3cm]{hql/all.png}
  176.  
  177. \end{center}
  178.  
  179.  
  180. \end{frame}
  181.  
  182.  
  183.  
  184. \begin{frame}\frametitle{Radiative decays}
  185.  
  186. \begin{columns}
  187. \column{5in}
  188.  
  189. \begin{itemize}
  190. \item $\PBzero \to \PKstar \Pphoton$ - first observed penguin!
  191. \begin{itemize}
  192. \item CLEO, [\href{http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.71.674}{\color{blue}PRL, 71 (1993) 674}]
  193. \end{itemize}
  194. \item B-factories probed NP measuring, inclusively/ semi-inclusively $\mathcal{B}(\Pbeauty \to \Pstrange \Pphoton)$
  195. \end{itemize}
  196. \column{0.1in}{~}
  197.  
  198. \end{columns}
  199.  
  200.  
  201.  
  202. \begin{columns}
  203. \column{3in}
  204. \begin{itemize}
  205. \item Is there anyway LHCb can contribute?
  206. \begin{itemize}
  207. \item Measurements of $\mathcal{B}(\Pbeauty \to \Pstrange \Pphoton)$ very difficult.
  208. \item Can probe probe polarization!
  209. \end{itemize}
  210. \end{itemize}
  211. \column{2in}
  212. \includegraphics[width=0.85\textwidth]{hql/btosgamma.png}
  213. \end{columns}
  214. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  215.  
  216.  
  217. \begin{columns}
  218. \column{5in}
  219.  
  220. \begin{itemize}
  221. \item In SM, photons form $\Pbeauty \to \Pstrange \Pphoton$ decays are left handed.
  222. \begin{itemize}
  223. \item Charged current interactions: $C_7/C'_7\sim m_{\Pbeauty}/m_{\Pstrange}$
  224. \end{itemize}
  225. \item Can test $C_7/C'_7$ using:
  226. \begin{itemize}
  227. \item Mixing induced CP violation: \href{http://arxiv.org/abs/hep-ph/9704272}{\color{blue}Atwood et. al. PRL 79 (1997) 185-188}
  228. \item $\PLambdab$ baryons: \href{http://arxiv.org/abs/hep-ph/0108074}{\color{blue}Hiller \& kagan PRD 65 (2002) 074038}
  229. \end{itemize}
  230. \end{itemize}
  231. \column{0.1in}{~}
  232.  
  233. \end{columns}
  234.  
  235. \end{frame}
  236. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  237.  
  238. \begin{frame}\frametitle{Photon polarization from $\PB^+ \to \PK^{+} \Ppi^- \Ppi^+ \Pphoton$}
  239.  
  240.  
  241. \begin{columns}
  242. \column{3.5in}
  243.  
  244. \begin{itemize}
  245. \item OR: Study $\PB \to \PK^{\ast \ast} \Pphoton$ decays like $\PBplus \to \PK_1(1270) \Pphoton$
  246. \begin{itemize}
  247. \item \href{http://arxiv.org/abs/hep-ph/0205065}{\color{blue}Gronau \& Pirjol PRD 66 (2002) 054008}
  248. \end{itemize}
  249. \item The trick is to get the photon polarization from the up-down asymmetry of photon direction in the $\PK \Ppi \Ppi$ rest frame.
  250. \begin{itemize}
  251. \item No asymmetry $\rightarrow$ Unpolarised photons.
  252. \end{itemize}
  253. \item Conceptionally this measurement is similar to the Wu experiment, which first observed parity violation.
  254.  
  255.  
  256. \end{itemize}
  257. \column{1.5in}
  258.  
  259. \includegraphics[width=0.95\textwidth]{hql/polarization.png}
  260.  
  261. \end{columns}
  262. \end{frame}
  263. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  264. \begin{frame}\frametitle{$\PB^+ \to \PK^{+} \Ppi^- \Ppi^+ \Pphoton$ at LHCb}
  265.  
  266.  
  267. \begin{columns}
  268. \column{3.in}
  269.  
  270. \begin{itemize}
  271. \item LHCb looked at $\PBplus \to \PKplus \Ppiminus \Ppiplus \Pphoton$, using un-converted photons.
  272. \item Got over 13.000 candidates in $3~fb^{-1}$!
  273. \item \href{http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.161801}{\color{blue} Phys. Rev. Lett. 112, 161801 }
  274. \item $\PKplus \Ppiminus \Ppiplus$ system has variety of resonances.
  275. \begin{itemize}
  276. \item $\PK \Ppi \Ppi \Ppi$ system studied inclusively.
  277. \item Bin the mass and look for polarization there.
  278. \end{itemize}
  279. \end{itemize}
  280. \column{2in}
  281. {~}
  282. \includegraphics[width=0.95\textwidth]{hql/plotspolarization.png}
  283.  
  284. \end{columns}
  285. \end{frame}
  286. \iffalse
  287. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  288. \begin{frame}%\frametitle{$\color{white} B^+ \to K^{+} \pi^- \pi^+ \gamma$ at LHCb}
  289. \begin{center}
  290. {\color{red} Fit with $\color{red}(C_7'-C_7)/(C_7'+C_7)=0$}, {\color{blue} Best fit}
  291. \includegraphics[width=0.93\textwidth]{hql/photonfit.png}
  292. \end{center}
  293.  
  294.  
  295. \end{frame}
  296. \fi
  297. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  298. \begin{frame}\frametitle{Up-down asymmetry}
  299.  
  300. \begin{columns}
  301. \column{3.in}
  302.  
  303. \begin{itemize}
  304. \item Combining the 4 bins, gives $5.2\sigma$ significance from no photon polarization hypothesis.
  305. \item Unfortunately without understanding the hadron system it is impossible to tell if the photon is left or right -handed.
  306. \end{itemize}
  307.  
  308. \column{2in}
  309. {~}
  310. \includegraphics[width=0.95\textwidth]{hql/aud.png}
  311.  
  312. \end{columns}
  313. \begin{center}
  314. $\rightarrow$~ First observation of photon polarization in $\Pbeauty \to \Pstrange \Pphoton$!
  315.  
  316. \end{center}
  317.  
  318.  
  319.  
  320. \end{frame}
  321.  
  322. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  323. \begin{frame}\frametitle{$\PBzero \rightarrow \Pmu^+ \Pmu^-$}
  324. \begin{columns}
  325. \column{3.2in}
  326.  
  327. \begin{itemize}
  328. \item Clean theoretical prediction, GIM and helicity suppressed in the SM:
  329. \begin{itemize}
  330. \item $\mathcal{B}(\PBs \to \Pmuon \APmuon) = (3.65 \pm 0.23)\times 10^{-9}$
  331. \item $\mathcal{B}(\PBzero \to \Pmuon \APmuon) = (1.06 \pm 0.09)\times 10^{-10}$
  332. \end{itemize}
  333. \item Sensitive to contributions from scalar and pesudoscalar couplings.
  334. \item Probing: MSSM, higgs sector, etc.
  335. \item In MSSM: $\mathcal{B}(\PBs \to \Pmuon \APmuon) \sim \tan^6 \beta /m_A^4$
  336. \end{itemize}
  337.  
  338. \column{1.5in}
  339. {~}
  340. \includegraphics[width=0.95\textwidth]{hql/bs2mumu1.png}\\
  341. \includegraphics[width=0.95\textwidth]{hql/bs2mumu2.png}\\
  342. \includegraphics[width=0.6\textwidth]{hql/higgspen.png}
  343. \end{columns}
  344.  
  345.  
  346. \end{frame}
  347. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  348. \begin{frame}\frametitle{$\PBzero \rightarrow \Pmu^+ \Pmu^-$ searches}
  349.  
  350.  
  351. \begin{columns}
  352. \column{5in}
  353.  
  354. \begin{itemize}
  355. \item Background rejection power is a key feature of rare decays $\rightarrow$ use multivariate classifiers (BDT) and strong PID.
  356. \end{itemize}
  357. \column{0.1in}{~}
  358.  
  359. \end{columns}
  360. \begin{columns}
  361. \column{2.5in}
  362. \includegraphics[width=0.95\textwidth]{hql/BDT.png}
  363.  
  364. \column{2.5in}
  365.  
  366. \includegraphics[width=0.95\textwidth]{hql/mass.png}
  367.  
  368. \end{columns}
  369.  
  370. \begin{itemize}
  371. \item Normalize the BF to $\PBplus \to \PJpsi(\mu\mu) \PKplus$ and $\PBzero \to \PK \Ppi$.
  372. \end{itemize}
  373. \end{frame}
  374.  
  375.  
  376. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  377. \begin{frame}\frametitle{$\PBzero \rightarrow \Pmu^+ \Pmu^-$ Results}
  378.  
  379.  
  380.  
  381. \begin{columns}
  382. \column{2.in}
  383. \begin{itemize}
  384. \item Nov. 2012:
  385. \begin{itemize}
  386. \item First evidence $3.5\sigma$ for $B^0 \rightarrow \mu^+ \mu^-$. with $2.1~fb^{-1}$.
  387. \end{itemize}
  388. \item Summer 2013:
  389. \begin{itemize}
  390. \item Full data sample: $3~fb^{-1}$.
  391. \end{itemize}
  392. \end{itemize}
  393. \column{3.0in}
  394.  
  395. \includegraphics[width=0.95\textwidth]{hql/mass2.png}
  396.  
  397. \end{columns}
  398. \begin{itemize}
  399. \item Measured BF:\\ $\mathcal{B}(\PBs \to \Pmuon \APmuon) =(2.9^{+1.1}_{-1.0}(stat.)^{+0.3}_{-0.1}(syst.))\times 10^{-9}$
  400. \item $4.0 \sigma$ significance!
  401. \item $\mathcal{B}(\PBzero \to \Pmuon \APmuon) < 7 \times 10^{-10}$ at $95\%$ CL
  402. \item \href{http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.110.021801}{\color{blue} PRL 110 (2013) 021801 }
  403. \item \href{http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.111.101805}{\color{blue} CMS result: PRL 111 (2013) 101805}
  404. \end{itemize}
  405.  
  406.  
  407. \end{frame}
  408.  
  409.  
  410.  
  411.  
  412.  
  413. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  414. \begin{frame}\frametitle{LHCb+CMS Combination}
  415. \begin{Large}
  416.  
  417.  
  418. \begin{center}
  419. $\mathcal{B}(\PBs \to \Pmuon \APmuon) =(2.8^{+0.7}_{-0.6} )\times 10^{-9}$\\
  420. $\mathcal{B}(\PBzero \to \Pmuon \APmuon) =(3.9^{+1.6}_{-1.4} )\times 10^{-10}$
  421. \end{center}
  422. \end{Large}
  423.  
  424. \includegraphics[width=0.95\textwidth]{hql/bs2mumu_comb.png}
  425.  
  426. \begin{itemize}
  427. \item \href{http://arxiv.org/pdf/1411.4413v1.pdf}{\color{blue}arXiv:1411.4413}
  428. \end{itemize}
  429.  
  430. \end{frame}
  431.  
  432.  
  433.  
  434.  
  435.  
  436. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  437. \begin{frame}\frametitle{$\PBzero \rightarrow \PK^{\ast} \Pmu \Pmu$ angular distributions}
  438. \begin{columns}
  439. \column{2.5in}{~}
  440. \begin{itemize}
  441. \item Can probe photon polarization using virtual photons in $\Pbeauty \to \Pstrange \Plepton \Plepton$.
  442. \item LHCb favourite: $\PBzero \to \PKstar \mu \mu$.
  443. \item Sensitive to lot of new physics models.
  444. \item Decay described by three angles $\theta_l, \theta_K, \phi$ and dimuon invariant mass $q^2$.
  445. \item Analysis is performed in bins of $q^2$.
  446. \end{itemize}
  447. \column{2.5in}
  448. \includegraphics[width=0.95\textwidth]{hql/angles.png}
  449.  
  450. \end{columns}
  451. \end{frame}
  452.  
  453.  
  454.  
  455. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  456. \begin{frame}\frametitle{$\PBzero \rightarrow \PK^{\ast} \Pmu \Pmu$ angular distributions}
  457. \begin{itemize}
  458. \item Angular distributions depends on 11 angular terms:
  459. \includegraphics[width=0.95\textwidth]{hql/eq.png}
  460. \end{itemize}
  461. where the $J_i$ are bilinear combinations of helicity amplitudes.
  462. \begin{itemize}
  463. \item Not enough events in our data sample to fit for 11 parameters $\rightarrow$ need to simplify!
  464. \item Can use symmetries, to reduced the the parameters \\ to 9 $\rightarrow$ still a bit large!
  465. \end{itemize}
  466.  
  467. \end{frame}
  468. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  469. \begin{frame}\frametitle{$\PBzero \rightarrow \PK^{\ast} \Pmu \Pmu$ Folding}
  470. \begin{itemize}
  471. \item One can simplify the angular distribution by folding: eg. $\phi \to \phi +\pi$ for ($\phi<0$).
  472. \item Cancels terms with $\cos \phi$ and $\sin \phi$.
  473.  
  474. \end{itemize}
  475. \includegraphics[width=0.95\textwidth]{hql/eq2.png}
  476. \end{frame}
  477.  
  478.  
  479. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  480. \begin{frame}\frametitle{$\PBzero \rightarrow \PK^{\ast} \Pmu \Pmu$ angular distributions }
  481. \begin{itemize}
  482. \item Different foldings cancel different angular observables. \href{http://arxiv.org/abs/1308.1707}{\color{blue}[PRL 111 191801 (2013)]}
  483. \includegraphics[width=0.95\textwidth]{hql/ps.png}
  484. \item Observables $P'_{4,5} = S_{4,5}/\sqrt{F_L(1-F_L)}$
  485. \item Leading form-factor uncertainties cancel.
  486. \item In $1~fb^{-1}$, LHCb observes a local discreapncy of $3.7\sigma$ in $P'_5$.
  487. \item Probability that at least one bin varies by this much is $0.5\%$.
  488. \item SM prediction form: \href{http://arxiv.org/abs/1303.5794}{\color{blue} JHEP 05 (2013) 137}
  489.  
  490. \end{itemize}
  491.  
  492. \end{frame}
  493. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  494. \begin{frame}\frametitle{$\PBzero \rightarrow \PK^{\ast} \Pmu \Pmu$ update with $3~\invfb$ }
  495. \begin{columns}
  496. \column{3in}
  497. \begin{itemize}
  498. \item Recently we release a preliminary result with $3~\invfb$ \href{https://cds.cern.ch/record/2002772?ln=en}{\color{blue}[LHCb-CONF-2015-002]}
  499. \item Anomaly stays at $3.7~\sigma$.
  500. \item Soon a full result with finer bins!
  501. \end{itemize}
  502.  
  503. \column{2in}
  504. \includegraphics[width=0.95\textwidth]{hql/AFBPad.pdf}
  505.  
  506. \end{columns}
  507. \begin{columns}
  508. \column{0.1in}
  509. {~}
  510. \column{3in}
  511.  
  512. \includegraphics[width=0.95\textwidth]{hql/P5pPad.pdf}
  513. \column{2in}
  514. \includegraphics[width=0.95\textwidth]{hql/S4Pad.pdf}
  515. \end{columns}
  516.  
  517. \end{frame}
  518.  
  519.  
  520. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  521. \begin{frame}\frametitle{Understanding the $\PBzero \rightarrow \PK^{\ast} \Pmu \Pmu$ anomaly}
  522. \begin{columns}
  523. \column{3.5in}
  524. \begin{itemize}
  525. \item Matias, Decotes-Genon \& Virto performed a global fit to the avaible $\Pbeauty \to \Pstrange \Pphoton$ abd $\Pbeauty \to \Pstrange \Plepton \Plepton$.
  526. \item Found $4.5 \sigma$ discrepancy from SM.
  527. \item Fit favours $C_9^{NP}=1.5$
  528. \item \href{http://arxiv.org/abs/1307.5683}{\color{blue} PRD 88 074002 (2013)}
  529. \end{itemize}
  530. \begin{itemize}
  531. \item Straub \& Altmannshofer performed a global analysis and found discrepancies at the level of $3\sigma$. Data again best describes a modified $C_9$.
  532. \item Data can be explained by introducing a flavour changing $\PZprime$ boson, with mass $\mathcal{O}(10~TeV)$
  533. \item \href{http://arxiv.org/abs/1212.2263}{\blue{EPJC 73 2646 (2013)}}
  534. \end{itemize}
  535.  
  536. \column{1.5in}
  537. \includegraphics[width=0.9\textwidth]{hql/np.png}
  538. \end{columns}
  539. \end{frame}
  540. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  541. %\begin{frame}\frametitle{Understanding the $\color{white}B^{0} \rightarrow K^{\ast} \mu \mu$ anomaly 2/2}
  542. %\begin{columns}
  543. %\column{3in}
  544.  
  545. %\includegraphics[width=0.99\textwidth]{hql/c9.png}
  546. %\column{2in}
  547. %\begin{itemize}
  548. %\item High $q^2$ differential BF suggests are all below SM.
  549. %\item Better consistency with $C_9^{NP}=-1.5$
  550. %\end{itemize}
  551.  
  552. %\end{columns}
  553.  
  554.  
  555. %\end{frame}
  556.  
  557. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  558. \begin{frame}\frametitle{Lepton universality}
  559. \begin{columns}
  560. \column{3.0in}
  561. \begin{itemize}
  562. \item If $\PZprime$ is responsible for the $P'_5$ anomaly, does it couple equally to all flavours?
  563. \includegraphics[width=0.9\textwidth]{hql/uni2.png}
  564. \item Challenging analysis.
  565. \item Migration of events modeled by MC.
  566. \item Correct bremsstrahlung.
  567. \item Take double ratio with $\PBplus \to \PJpsi \PKplus$ to cancel systematics.
  568. \item In $3fb^{-1}$, LHCb measures $R_K=0.745^{+0.090}_{-0.074}(stat.)^{+0.036}_{-0.036}(syst.)$
  569. \item Consistent with SM at $2.6\sigma$.
  570.  
  571. \end{itemize}
  572. \column{2.0in}
  573. \includegraphics[width=0.99\textwidth]{hql/universality.png}
  574. \end{columns}
  575. \end{frame}
  576. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  577. \begin{frame}\frametitle{Lepton universality with $\PBzero \rightarrow \PK^{\ast} \Pmu \Pmu$ anomaly}
  578. \begin{columns}
  579. \column{3in}
  580. \begin{itemize}
  581. \item Lepton flavour universality cannot be explained by any QCD effect!
  582. \item This effect is consistent with anomaly (non universal $\PZ'$)
  583. \item Global fit to $\Pbeauty \rightarrow \Pstrange \Pmuon \APmuon$ and $\Pbeauty \rightarrow \Pstrange \Pelectron \APelectron$ seems to favour $\PZ'$ with non lepton universal couplings.
  584. \end{itemize}
  585.  
  586.  
  587. \column{2in}
  588. \includegraphics[width=0.9\textwidth]{images/LU.png}
  589. \end{columns}
  590. \href{http://arxiv.org/pdf/1408.4097v3.pdf}{Ghosh et al.~1408.4097}
  591. \end{frame}
  592. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  593. \begin{frame}\frametitle{FCNC in charm decays}
  594. \begin{columns}
  595. \column{3.0in}
  596. \begin{itemize}
  597. \item GIM cancelation effective in $\Pcharm \to \Pup$ transitions due to small size of $m_b$.
  598. \item SM prediction:~$\mathcal{B}(\PDzero \to \mu \mu) \sim 6 \times 10^{-11}$
  599.  
  600.  
  601. \end{itemize}
  602. \column{1.5in}
  603. \includegraphics[width=0.9\textwidth]{hql/ds2mumu.png}
  604. \end{columns}
  605. \includegraphics[width=0.9\textwidth]{hql/ds2mumu2.png}
  606. \begin{small}
  607.  
  608. \begin{itemize}
  609. \item Use $\PDstar^{\pm}$ and exploit small $\Delta m$ for background suppression.
  610. \item Limitation is $\pi \to \mu$ mis-id.
  611. \item Limit: $\mathcal{B}(\PDzero \to \mu \mu)<6.2\times 10^{-9}$ at $90\%$ CL
  612. \item \href{http://arxiv.org/abs/1305.5059}{\color{blue} PLB 725 (2013) 15-24}
  613. \end{itemize}
  614.  
  615. \end{small}
  616. \end{frame}
  617.  
  618.  
  619.  
  620. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  621. \begin{frame}\frametitle{Conclusions}
  622. \begin{columns}
  623. \column{3.2in}
  624. \begin{itemize}
  625. \item Rare decays play important role in hutting NP.
  626. \item Can access NP scales beyond reach of GPD.
  627. \item Tension in $\Pbeauty \to \Pstrange \Plepton \Plepton$, theory correct?
  628. \item List of decays presented in this talk is just a tip of iceberg:
  629. \begin{itemize}
  630. \item Please look at ours: isospin, $A_{CP}$.
  631. \item More are on their way.
  632. \end{itemize}
  633.  
  634.  
  635. \end{itemize}
  636. \column{2in}
  637. \includegraphics[width=0.9\textwidth]{hql/higgs_boring.png}
  638. \end{columns}
  639.  
  640. \end{frame}
  641.  
  642.  
  643. \end{document}