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-
-
- \author{ {\fontspec{Trebuchet MS}Marcin Chrz\k{a}szcz} (Universit\"{a}t Z\"{u}rich)}
- \institute{UZH}
- \title[Electroweak Run2 prospects]{Electroweak Run2 prospects}
- \date{1-2 September 2015}
-
-
- \begin{document}
- \tikzstyle{every picture}+=[remember picture]
-
- {
- \setbeamertemplate{sidebar right}{\llap{\includegraphics[width=\paperwidth,height=\paperheight]{bubble2}}}
- \begin{frame}[c]%{\phantom{title page}}
- \begin{center}
- \begin{center}
- \begin{columns}
- \begin{column}{0.75\textwidth}
- \flushright\fontspec{Trebuchet MS}\bfseries \Huge {Electroweak\\ Run2 prospects}
- \end{column}
- \begin{column}{0.02\textwidth}
- {~}
- \end{column}
- \begin{column}{0.23\textwidth}
- % \hspace*{-1.cm}
- \vspace*{-3mm}
- \includegraphics[width=0.6\textwidth]{lhcb-logo}
- \end{column}
-
- \end{columns}
- \end{center}
- \quad
- \vspace{3em}
- \begin{columns}
- \begin{column}{0.44\textwidth}
- \flushright \vspace{-1.8em} {\fontspec{Trebuchet MS} \Large Marcin Chrząszcz\\\vspace{-0.1em}\small \href{mailto:mchrzasz@cern.ch}{mchrzasz@cern.ch}}
-
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-
- \vspace{1em}
- % \footnotesize\textcolor{gray}{With N. Serra, B. Storaci\\Thanks to the theory support from M. Shaposhnikov, D. Gorbunov}\normalsize\\
- \vspace{0.5em}
-
- \textcolor{normal text.fg!50!Comment}{Zurich meeting, Churwalden\\September 1-2, 2015}
- \end{center}
- \end{frame}
- }
-
-
- \begin{frame}\frametitle{Higher energy!}
- \begin{columns}
- \column{0.1\textwidth}
- {~}
- \column{0.5\textwidth}
- $7~\TeV$
- \column{0.4\textwidth}
- $14~\TeV$
- \end{columns}
-
-
- \includegraphics[width=0.95\textwidth]{images/Q_x.png}
-
- \begin{itemize}
- \item LHCb cover a very unique region of the phase space that is not accessible for any other experiments.
- \item One could measure in this regime:
- \begin{itemize}
- \item $\PW$, $\PZ$ cross section.
- \item Drell-Yan cross section.
- \end{itemize}
- \item These measurements would strongly constrain the PDF in the fits.
- \end{itemize}
-
-
- \end{frame}
- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
- \begin{frame}\frametitle{Cross section}
- $\Rrightarrow$ Higher energy $\Rightarrow$ Higher cross section:
- \includegraphics[width=0.95\textwidth]{images/xsection.png}
-
- $\Rrightarrow$ In contrast to RD the EW measurements should start much sooner as they are not statistically dominated!
-
-
- \end{frame}
-
- \begin{frame}\frametitle{What could we do?}
-
- $\Rrightarrow$ For starters we should start by measurement of $\PZ$ cross section (already ongoing in the group).\\
- $\Rightarrow$ Relativity simple, you don't need much data.\\
- $\Rightarrow$ Important for MC tuning.\\
- $\Rrightarrow$ More interesting: Tripple Gauge Boson Couplings:\\{~}\\
- \begin{columns}
-
- \column{3in}
- \begin{itemize}
- \item Clear SM prediction.
- \item Sensitive to anomalous couplings!
- \item ATLAS observed a small but consistent deviation in this measurement.
- \end{itemize}
-
- \column{2in}
- \includegraphics[width=0.9\textwidth]{{images/DibosonGeneric.eps}.jpg}
-
- \end{columns}
-
-
- \end{frame}
-
- \begin{frame}\frametitle{Drell-Yan}
- \begin{columns}
- \column{0.05\textwidth}
-
-
- \column{0.45\textwidth}
- \begin{itemize}
- \item Very clean theoretical prediction!
- \item Effectively you are probing the proton PDF.
- \item Remember that the theory error for all the Higgs calculations comes from PDFs.
- \item One could improve really the PDFs thanks to special kinematic region of LHCb.
- \item We could reach lower $x$ region of $10^{-6}$, trigger is there! Background needs to be understood.
- \end{itemize}
-
- \column{0.5\textwidth}
- \includegraphics[width=0.9\textwidth]{{images/450px-Drell-Yan.svg}.png}\\
- \includegraphics[angle=-90,width=0.9\textwidth]{{images/13000_14000_y_bin_2_4.5}.pdf}
-
- \end{columns}
-
-
- \end{frame}
-
- \begin{frame}\frametitle{Central Exclusive Production}
- \begin{columns}
- \column{0.05\textwidth}
-
-
- \column{0.65\textwidth}
- \begin{itemize}
- \item Super clean theoretically.
- \item Signature: protons interact and go to the beam pipe undetected, in the detector you are left with couple of particles.
- \item Probing PDF and also thanks to DPE we have a link to Higgs Physics.
- \item Getting sensitive to saturation effects?
- \end{itemize}
-
- \column{0.3\textwidth}
- \includegraphics[width=0.6\textwidth]{{images/2gamma}.png}\\
- \includegraphics[width=0.6\textwidth]{{images/gammapomeron}.png}\\
- \includegraphics[width=0.6\textwidth]{{images/2pomeron}.png}\\
- \end{columns}
-
-
- \end{frame}
-
- \begin{frame}\frametitle{Central Exclusive Production- detector upgrade}
- \begin{itemize}
- \item For Run2 LHCb installed:HeRSCheL: High Rapidity Shower Counters
- \item They cover $5<\eta<8$.
- \item Rejecting the main background for CEP.
- \item Allows to measure $p_T^2$ distribution for inelastic events.
- \item Dedicated \texttt{L0} trigger for CEP.
- \end{itemize}
-
-
- \includegraphics[width=0.9\textwidth]{{images/upgrade}.png}\\
-
- \end{frame}
-
-
- \begin{frame}\frametitle{Ion-Ion run}
- \begin{columns}
- \column{0.03\textwidth}
- {~}
- \column{0.7\textwidth}
- \begin{itemize}
- \item Tests of all QGP effects:
- \begin{itemize}
- \item Colour screening.
- \item Melting states.
- \item Jet quenching.
- \item $\PJpsi$ suppression.
- \item Elliptic flow.
- \end{itemize}
- \item Cold and hot matter effects.
- \item SMOG.
- \item etc.
- \end{itemize}
-
- \column{0.27\textwidth}
- \includegraphics[width=0.95\textwidth]{images/melt.png}\\
-
- \end{columns}
- \includegraphics[width=0.85\textwidth]{images/smog.png}
- \end{frame}
-
-
-
- \begin{frame}\frametitle{CP-odd Higgs}
- \includegraphics[width=0.95\textwidth]{images/diagrams.png}
- \begin{itemize}
- \item Competitive with ATLAS and CMS
- \item We have excellent resolution.
- \item Can probe mass around the $\Upsilon$s region.
- \end{itemize}
-
-
- \end{frame}
- \begin{frame}\frametitle{top physics}
- \begin{itemize}
- \item Katharina already presented our recent measurement of top measurement in the forward region.
- \item with Run2 data ($5~\rm fb^{-1}$):
- \begin{itemize}
- \item $[\Plepton, \Pbeauty]$: expect $\sim$ $8300~\Ptop \APtop$ , $5000~\Ptop$-channel, $600~\Pstrange$ -channel, and $180~\PW \Ptop$.
- \item $[ \Plepton, \Plepton , \Pbeauty, \Pbeauty]$: expect $\sim$ $530~\Ptop \APtop$.
- \end{itemize}
- \end{itemize}
-
-
- \end{frame}
-
- \begin{frame}\frametitle{How about some precision?}
-
- \begin{columns}
- \column{0.05\textwidth}
- {~}
-
- \column{0.5\textwidth}
- \begin{itemize}
- \item One can measure the $A_{FB}$ in the $\PZ \to \Pmu \Pmu$ decays:
- \begin{align*}
- A_{FB}=\dfrac{\sigma(\cos \theta >0) - \sigma(\cos \theta <0) }{\sigma(\cos \theta >0) + \sigma(\cos \theta <0) }
- \end{align*}
- \item This is dependent on the vector and axial couplings $\Rightarrow$ $\sin \theta_W^{eff}$.
- \item Since LEP time there is a small tension in this measurement.
- \item With full Run2 data and some smart ideas we might be close to LEP!
- \item ATLAS and CMS will not not be able to compete.
- \end{itemize}
-
- \column{0.45\textwidth}
- \includegraphics[width=0.95\textwidth]{images/AFB_11.png}\\
- \includegraphics[width=0.95\textwidth]{images/chi2.png}
- \end{columns}
-
- \end{frame}
-
-
- \begin{frame}\frametitle{Summary}
- \begin{itemize}
- \item Reach Run2 program in QEE WG measurements:
- \begin{enumerate}
- \item Drell-Yan
- \item Ion-Ion physics
- \item Cross section measurements
- \item Triple Gauge Couplings
- \item top physics
- \item CEP
- \item $\sin \theta_W^{eff}$
- \end{enumerate}
- \end{itemize}
-
-
-
- \end{frame}
-
-
-
-
-
-
- \backupbegin
- \begin{frame}\frametitle{Backup}
-
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- \end{frame}
-
- \backupend
-
- \end{document}