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- \documentclass[english,aspectratio=169]{beamer}
- % \usepackage{fontspec}
- \usepackage{graphicx}
- \usepackage{amssymb}
- \usepackage{booktabs}
- \usepackage{siunitx}
- % \setmainfont[Mapping=tex-text]{DejaVu Serif}
- % \setsansfont[Mapping=tex-text]{DejaVu Sans}
- % \setmonofont{DejaVu Sans Mono}
- \newcommand{\fb}{\si{\femto\barn}}
- \newcommand{\invfb}{\si{\per\femto\barn}}
- \usetheme[]{bjeldbak}
- \begin{document}
- \title[4t X-Section]{Four Tops Cross Section Measurement}
- \subtitle{Trilepton Channel}
- \author[C. Fangmeier]{Caleb Fangmeier}
- \institute[UNL]{University of Nebraska \-- Lincoln}
- \date{\today}
- \titlegraphic{%
- \begin{figure}
- \includegraphics[width=1in]{CMSlogo}\hspace{0.75in}\includegraphics[width=1in]{nebraska-n}
- \end{figure}
- }
- \begin{frame}[plain]
- \titlepage%
- \end{frame}
- % \begin{frame}
- \section{Introduction}
- \begin{frame}{Production}
- \begin{minipage}[c][\textheight]{0.45\textwidth}
- \begin{itemize}
- \item 4-top production can proceed through either
- \begin{itemize}
- \item<2,5-> $\mathcal{O}(\alpha_S^4)$ QCD Process
- \item<3,5-> $\mathcal{O}(\alpha_S^2 y_t^2)$ Higgs Exchange
- \item<4,5-> $\mathcal{O}(\alpha_S^2\alpha^2)$ Electroweak Process
- \end{itemize}
- \item<5-> Higgs Exchange + EW gives $\approx10\%$ contribution to total cross-section.
- \end{itemize}
- \end{minipage}
- \begin{minipage}[c][\textheight]{0.45\textwidth}
- \centering
- \only<2>{%
- \includegraphics[width=\textwidth]{figures/production-qcd.png}
- }
- \only<3>{%
- \includegraphics[width=\textwidth]{figures/production-higgs.png}
- }
- \only<4>{%
- \includegraphics[width=\textwidth]{figures/production-ew.png}
- }
- \only<5>{%
- Standard Model cross-section at $\sqrt{s}=13\mathrm{TeV}$:
- \begin{center}
- \Huge{12.32\fb}
- \end{center}
- }
- \only<6->{%
- Standard Model cross-section at $\sqrt{s}=13\mathrm{TeV}$:
- \vspace{-.15in}
- \begin{center}
- \Large{12.32\fb}
- \end{center}
- \includegraphics[width=\textwidth]{figures/lhc-luminosity-2016.png}
- % IMGSRC: https://home.cern/cern-people/updates/2016/12/lhc-report-far-beyond-expectations
- \vspace{-.15in}
- \begin{equation*}
- \mathrm{\#\ Signal\ Events}=12.32\fb * 40\invfb \approx 493
- \end{equation*}
- }
- \end{minipage}
- \end{frame}
- \begin{frame}{Decay Channels}
- \begin{minipage}[c][\textheight]{0.45\textwidth}
- \begin{itemize}
- %TODO: Check the limits on non-bW decays
- \item<1-> All* tops will immediately decay to a b-quark and a W-boson
- \item<2-> The W-boson will immediately decay either
- \begin{itemize}
- \item<2,4-> \textbf{Leptonically}
- \item<3-> \textbf{Hadronically}
- \end{itemize}
- \item<4-> The b-quark will form some b hadron, travel some macroscopic distance, and then hadronize into a jet.
- \end{itemize}
- \end{minipage}
- \begin{minipage}[c][\textheight]{0.54\textwidth}
- \centering
- \only<1>{%
- \includegraphics[width=\textwidth]{figures/feynman-diagrams/T->b,W.png}
- }
- \only<2>{%
- \includegraphics[width=\textwidth]{figures/feynman-diagrams/T->b,(W->ln).png}
- }
- \only<3>{%
- \includegraphics[width=\textwidth]{figures/feynman-diagrams/T->b,(W->qq).png}
- }
- \only<4>{%
- \includegraphics[width=0.90\textwidth]{figures/b-tagging.png}
- }
- \end{minipage}
- \end{frame}
- \begin{frame}{Decay Channels}
- The Decay channels are enumerated based on the types of W-decays
- \begin{table}[]
- \tiny
- \begin{tabular}{@{}llccrrc@{}}
- \textbf{Name} & \textbf{Leptons} & \textbf{B-Jets} & \textbf{LF-Jets} & \textbf{BR} & \textbf{BR ($\mu$ and $e$ only)} & \textbf{Events @ 40\invfb} \\ \midrule
- Hadronic & & 4 & 8 & 20\% & 20\% & 99 \\ \midrule
- Single Lepton & $\ell^\pm$ & 4 & 6 & 40\% & 26.6\% & 131 \\ \midrule
- Same-Sign (SS) Dilepton & $\ell^\pm \ell^\pm$ & 4 & 4 & 9.7\% & 4.3\% & 21 \\ \midrule
- Opposite-Sign (OS) Dilepton & $\ell^\pm \ell^\mp$ & 4 & 4 & 19.3\% & 8.6\% & 42 \\ \midrule
- Trilepton & $\ell^\pm\ell^\pm\ell^\mp$ & 4 & 2 & 9.8\% & 2.9\% & 14 \\ \midrule
- Leptonic & $\ell^+\ell^+\ell^-\ell^-$ & 4 & 2 & 1.2\% & 0.24\% & 1 \\ \bottomrule
- \end{tabular}
- \end{table}
- \vfill
- \footnotesize{$\ell \in \left(e,\mu,\tau\right)$}
- \end{frame}
- \section{Previous Measurements}
- \begin{frame}{Previous CMS Measurements @ 13TeV}
- \begin{table}[]
- \begin{tabular}{@{}lcr@{}}
- \textbf{Analysis} & \textbf{Channel} & \textbf{Limit} \\ \midrule
- CMS-TOP-16-016 & Single Lepton, OS Dilepton & 94\fb \\ \midrule
- CMS-SUS-15-008 & SS Dilepton & 119\fb \\ \bottomrule
- \textbf{Combined} & & 69\fb \\
- \end{tabular}
- \end{table}
- \end{frame}
- \section{Strategy}
- \begin{frame}{Strategy}
- \end{frame}
- \section{Progress \& Status}
- \begin{frame}{Progress \& Status}
- \end{frame}
- \section{Conclusions}
- \begin{frame}{Conclusions}
- \end{frame}
- \end{document}
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