From f583eb6987155a5775a5345dbe2e5044c9aa598e Mon Sep 17 00:00:00 2001 From: vorosful Date: Wed, 9 Jun 2021 22:39:50 -0400 Subject: [PATCH] Update pi0ntup_v2.tex --- pi0_photon_analysis/pi0ntup_v2.tex | 86 +++++++++++++++--------------- 1 file changed, 44 insertions(+), 42 deletions(-) diff --git a/pi0_photon_analysis/pi0ntup_v2.tex b/pi0_photon_analysis/pi0ntup_v2.tex index 04647eb..25b786e 100644 --- a/pi0_photon_analysis/pi0ntup_v2.tex +++ b/pi0_photon_analysis/pi0ntup_v2.tex @@ -23,8 +23,8 @@ \newcommand{\gevc}{\mbox{GeV/$c$}\xspace} \newcommand{\mgg}{\mbox{$m_{\gamma\gamma}$}\xspace} -\title{Examples of Basic Analysis Techniques for Neutral Meson and Photon -Data from the PHENIX Detector} +\title{Examples of basic analysis techniques for + neutral meson and photon data from the PHENIX Detector} \date{\today} \author{G.\,David\\ { \it Stony Brook University, Brookhaven National Laboratory}} @@ -117,10 +117,10 @@ \subsection{General comments about the data} in which this document is included: \textit{ \begin{itemize} -\item MBntup\_ggntuple.root -\item ERTntup\_ggntuple.root -\item MBntup\_gnt.root -\item ERTntup\_gnt.root +\item MBntup\_ggntuple.root (733161 events) +\item ERTntup\_ggntuple.root (160231 events) +\item MBntup\_gnt.root (282125 events) +\item ERTntup\_gnt.root (79791 events) \end{itemize} } \noindent @@ -182,30 +182,32 @@ \subsection{The Gamma-Gamma Ntuples \it{(ggnutple)}} The rest of the variables describe the two clusters ({\it 1,2}), their meaning is spelled out below. +Since ROOT allows only {\it float} in Ntuples, all variables are {\it float}. + \begin{table}[h] - \begin{tabular}{|l|l|} \hline - Variable name & Description \\ \hline - cent & Event centrality \\ - vtxZ & $z$-vertex of the event \\ - pt & Transverse momentum of cluster {\it pair} ($\pi^0$ + \begin{tabular}{|l|l|l|} \hline + Variable name & Type & Description \\ \hline + cent & float & Event centrality \\ + vtxZ & float & $z$-vertex of the event \\ + pt & float & Transverse momentum of cluster {\it pair} ($\pi^0$ candidate) \\ - costheta & $cos$ of the opening angle between the two clusters \\ - phi & Azimuthal angle of the direction of the pair momentum + costheta & float & $cos$ of the opening angle between the two clusters \\ + phi & float & Azimuthal angle of the direction of the pair momentum (assumed $\pi^0$) \\ - mass & Invariant mass calculated from the two clusters (energy and + mass & float & Invariant mass calculated from the two clusters (energy and position) \\ - asym & Energy asymmetry ($|E_1-E_2|/(E_1+E_2)$) of the two clusters \\ - sec1 & EMCal sector where the first cluster is \\ - Ecore1 & ``Core'' energy of the first cluster \\ - tof1 & Time-of-flight of the first cluster \\ - twrhit1 & Number of towers in the first cluster \\ - prob1 & Probability that the first cluster is a photon (based on + asym & float & Energy asymmetry ($|E_1-E_2|/(E_1+E_2)$) of the two clusters \\ + sec1 & float & EMCal sector where the first cluster is \\ + Ecore1 & float & ``Core'' energy of the first cluster \\ + tof1 & float & Time-of-flight of the first cluster \\ + twrhit1 & float & Number of towers in the first cluster \\ + prob1 & float & Probability that the first cluster is a photon (based on $\chi^2$) \\ - chisq1 & $\chi^2$ from expected photon shape for the first cluster + chisq1 & float & $\chi^2$ from expected photon shape for the first cluster \\ - stoch1 & Combined variable to describe ``photonness'' of first + stoch1 & float & Combined variable to describe ``photonness'' of first cluster \\ - sec2 & ... Same quantities as above for the second cluster of the + sec2 & float & ... Same quantities as above for the second cluster of the pair \\ \hline \end{tabular} \vspace{0.3cm} @@ -258,25 +260,25 @@ \subsection{The Single Cluster Ntuples \it{(gnt)}} are subject to the condition that the asymmetry is less than 0.8. \begin{table}[h] - \begin{tabular}{|l|l|} \hline - Variable name & Description \\ \hline - cent & Event centrality \\ - vtxZ & $z$-vertex of the event \\ - pt & Transverse momentum of the cluster ($\gamma$-candidate) \\ - costheta & Polar angle of the cluster ($\gamma$-candidate) \\ - phi & Azimuthal angle of the cluster ($\gamma$-candidate) \\ - sec & EMCal sector of the cluster ($\gamma$-candidate) \\ - ecore & ``Core'' energy of the cluster ($\gamma$-candidate) \\ - ecent & Energy in the central tower of the cluster ($\gamma$-candidate) \\ - tof & Time-of-flight in the central tower of the cluster ($\gamma$-candidate) \\ - prob & Probability that the cluster is a photon (based on $\chi^2$) \\ - disp & Dispersion of the cluster ($\gamma$-candidate) \\ - chisq & $\chi^2$ from expected photon shape of the cluster ($\gamma$-candidate) \\ - twrhit & Number of towers in the cluster ($\gamma$-candidate) \\ - stoch & Combined variable to describe ``photonness'' of the cluster ($\gamma$-candidate) \\ - x & $x$-position of impact point on the EMCal surface \\ - y & $y$-position of impact point on the EMCal surface \\ - z & $z$-position of impact point on the EMCal surface \\ \hline + \begin{tabular}{|l|l|l|} \hline + Variable name & Type & Description \\ \hline + cent & float & Event centrality \\ + vtxZ & float & $z$-vertex of the event \\ + pt & float & Transverse momentum of the cluster ($\gamma$-candidate) \\ + costheta & float & Polar angle of the cluster ($\gamma$-candidate) \\ + phi & float & Azimuthal angle of the cluster ($\gamma$-candidate) \\ + sec & float & EMCal sector of the cluster ($\gamma$-candidate) \\ + ecore & float & ``Core'' energy of the cluster ($\gamma$-candidate) \\ + ecent & float & Energy in the central tower of the cluster ($\gamma$-candidate) \\ + tof & float & Time-of-flight in the central tower of the cluster ($\gamma$-candidate) \\ + prob & float & Probability that the cluster is a photon (based on $\chi^2$) \\ + disp & float & Dispersion of the cluster ($\gamma$-candidate) \\ + chisq & float & $\chi^2$ from expected photon shape of the cluster ($\gamma$-candidate) \\ + twrhit & float & Number of towers in the cluster ($\gamma$-candidate) \\ + stoch & float & Combined variable to describe ``photonness'' of the cluster ($\gamma$-candidate) \\ + x & float & $x$-position of impact point on the EMCal surface \\ + y & float & $y$-position of impact point on the EMCal surface \\ + z & float & $z$-position of impact point on the EMCal surface \\ \hline \end{tabular} \vspace{0.3cm} \caption{Variables in the single-cluster ($\gamma$) Ntuple (the {\it gnt} type).