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Changeset 475 in svn for trunk/paper


Ignore:
Timestamp:
Jul 13, 2009, 5:27:10 PM (15 years ago)
Author:
Xavier Rouby
Message:

ajout MET-resolution atlas

Location:
trunk/paper/CommPhysComp
Files:
1 added
3 edited

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  • trunk/paper/CommPhysComp/notes.tex

    r460 r475  
    274274%\includegraphics[width=\columnwidth]{calosegmentation}
    275275\includegraphics[width=\columnwidth]{fig3}
    276 \caption{Default segmentation of the calorimeters in the $(\eta,\phi)$ plane. Only the central detectors (\textsc{ecal}, \textsc{hcal}) and \textsc{fcal} are considered. $\phi$ angles are expressend in radians.}
     276\caption{Default segmentation of the calorimeters in the $(\eta,\phi)$ plane. Only the central detectors (\textsc{ecal}, \textsc{hcal}) and \textsc{fcal} are considered. $\phi$ angles are expressed in radians.}
    277277\label{fig:calosegmentation}
    278278\end{center}
     
    669669%\includegraphics[width=\columnwidth]{resolutionETmis}
    670670\includegraphics[width=\columnwidth]{fig9}
    671 \caption{$\sigma(E^\textrm{miss}_{x})$ as a function on the scalar sum of all towers ($\Sigma E_T$) for $pp \rightarrow gg$ events.}
     671\includegraphics[width=\columnwidth]{fig9b}
     672\caption{$\sigma(E^\textrm{mis}_{x})$ as a function on the scalar sum of all towers ($\Sigma E_T$) for $pp \rightarrow gg$ events, for a \textsc{cms}-like detector (top) and an \textsc{atlas}-like detector (bottom), for dijet events produced with MadGraph/MadEvent and hadronised with Pythia.}
    672673\label{fig:resolETmis}
    673674\end{center}
     
    680681where the $\alpha$ parameter depends on the resolution of the calorimeters.
    681682
    682 The \textsc{met} resolution expected for the \textsc{cms} detector for similar events is $\sigma_x = (0.6-0.7) ~ \sqrt{E_T} ~ \mathrm{GeV}^{1/2}$ with no pile-up\footnote{\textit{Pile-up} events are extra simultaneous $pp$ collision occurring at high-luminosity in the same bunch crossing.}~\citep{bib:cmsjetresolution}, which compares very well with the $\alpha = 0.68$ obtained with \textsc{Delphes}.
     683The \textsc{met} resolution expected for the \textsc{cms} detector for similar events is $\sigma_x = (0.6-0.7) ~ \sqrt{E_T} ~ \mathrm{GeV}^{1/2}$ with no pile-up\footnote{\textit{Pile-up} events are extra simultaneous $pp$ collision occurring at high-luminosity in the same bunch crossing.}~\citep{bib:cmsjetresolution}, which compares very well with the $\alpha = 0.68$ obtained with \textsc{Delphes}. Similarly, for an \textsc{atlas}-like detector, a value of $0.57$ is obtained by \textsc{Delphes} for the $\alpha$ parameter, while the experiment expects it in the range $[0.53~ ;~0.57]$~\citep{bib:ATLASresolution}.
    683684
    684685\subsection{\texorpdfstring{$\tau$}{\texttau}-jet efficiency}
     
    819820\bibitem{bib:Delphes} \textsc{Delphes}, \href{http://www.fynu.ucl.ac.be/delphes.html}{www.fynu.ucl.ac.be/delphes.html}
    820821%hepforge:
    821 \bibitem{bib:stdhep} L.A. Garren, M. Fischler, \href{http://cepa.fnal.gov/psm/stdhep/c++}{cepa.fnal.gov/psm/stdhep/c++}\bibitem{bib:hepmc} M. Dobbs and J.B. Hansen, \textbf{Comput. Phys. Commun.} \href{http://dx.doi.org/10.1016/S0010-4655(00)00189-2}{134 (2001) 41}.
     822\bibitem{bib:stdhep} L.A. Garren, M. Fischler, \href{http://cepa.fnal.gov/psm/stdhep/c++}{cepa.fnal.gov/psm/stdhep/c++}
     823\bibitem{bib:hepmc} M. Dobbs and J.B. Hansen, \textbf{Comput. Phys. Commun.} \href{http://dx.doi.org/10.1016/S0010-4655(00)00189-2}{134 (2001) 41}.
    822824\bibitem{bib:lhe} J. Alwall, et al., \textbf{Comput. Phys. Commun.} \href{http://dx.doi.org/10.1016/j.cpc.2006.11.010}{176:300-304,2007}.
    823825\bibitem{bib:Root} %\textsc{Root}, \textit{An Object Oriented Data Analysis Framework},
     
    10701072# In case FROG event display allowed
    10711073NEvents_Frog      100
     1074# Number of events to process
     1075NEvents           -1                    // -1 means 'all'
     1076
    10721077
    10731078# input PDG tables
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