Event categorization

Some examples of a simple flowchart for the categorization of events.

A straight arrow with two corners and straight lines is drawn using a simple macro and the calc library:

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\documentclass[border=3pt,tikz]{standalone}
\usetikzlibrary{calc} % for calculating coordinates in \connect
\tikzset{>=latex}
\def\connect[#1] (#2)!#3!(#4){ % straight connector with two corners
  \draw[#1] (#2) |- ($(#2)!#3!(#4)$) node[pos=0.5] (#2-#4-1) {}
  -| (#4) node[pos=0.5] (#2-#4-2) {}
}
\begin{document}
\begin{tikzpicture}
  \node[red!80!black,fill=red!80!black!20] (A) at (0,0) {node A};
  \node[green!60!black,fill=green!60!black!20] (B) at (1,-1) {node B};
  \connect[->,thick,red] (A)!0.4!(B);
\end{tikzpicture}
\end{document}
 
 
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Edit and compile if you like:

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% Author: Izaak Neutelings (January 2023)
\documentclass[border=1pt,tikz,dvipsnames]{standalone}
\usepackage{amsmath,amssymb} % for \text
\usepackage{physics} % for \abs
\usepackage{xspace} % for \xspace
\usepackage{bm} % for bold math \bm
\usetikzlibrary{positioning} % for position relative to node
\usetikzlibrary{arrows.meta} % for arrow size
\usetikzlibrary{calc} % for computing coordinates
\tikzset{>=latex} % set default arrow head as latex
% VARIABLES
\newcommand{\pt}    {\ensuremath{p_\text{T}}\xspace}
\newcommand{\ptmiss}{\ensuremath{\pt^\text{miss}}\xspace}
\newcommand{\mvis}  {{\ensuremath{m_\text{vis}}}\xspace}
\newcommand{\GeV}   {{\ensuremath{\,\text{Ge\hspace{-.08em}V}}}\xspace}
\newcommand{\ab}[1]{\textbf{\boldmath{#1}}} % bold text & math
% TIKZ STUFF
\colorlet{myred}{red!80!black}
\colorlet{myblue}{blue!80!black}
\colorlet{mygreen}{green!50!black}
\colorlet{myorange}{orange!80!yellow!90!red!90!black}
\tikzstyle{mycomment}=[inner sep=1pt,scale=0.75,align=left]
\tikzstyle{mybox}=[draw,#1!80!black,fill=#1!95!black!20,inner sep=5pt,outer sep=3pt,
                   thick,rounded corners=3pt,align=center,font=\bfseries]
\tikzstyle{mysmallbox}=[mybox=#1,outer sep=1.5pt]
\tikzstyle{myarrow}=[-{Latex[length=8,width=8]},#1!80!black,thick,line cap=round,line width=3]
\tikzstyle{mysmallarrow}=[-{Latex[length=6,width=6]},#1!80!black,thick,line width=1.6]
% CONNECTOR with straight angles
\def\connect[#1](#2)!#3!(#4){
  \draw[#1] (#2) |- ($(#2)!#3!(#4)$) node[pos=0.5] (#2-#4-1) {}
  -| (#4) node[pos=0.5] (#2-#4-2) {}
}
\begin{document}
% JET CATEGORIES with straight lines
\begin{tikzpicture}[scale=1.0]
 
 
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