Update producer.tex

Author: aalvesan

sections/producer.tex

@@ -19,7 +19,7 @@ \section{Writing a Producer}\label{sec:producer}
 
 The second \CCSPStlye{Producer} class \code{cutflow\_features} allows us to define and store features to be used for cutflow plots. Here, in addition to \code{Jet.pt} we also require \code{mc\_weight} and \code{category\_ids} to be added to the \code{uses} set. Note that both of these are \CCSPStlye{Producer}s themselves which you can find by following the import path at the beginning of the script. 
 
-The  \CCSPStlye{Producer} class \code{mc\_weight} reads in the \code{genWeight} column and, if existent, the \code{LHEWeight} column, both stored in \code{events}. Since these columns are required, they are both added to the \code{uses} set of \code{mc\_weight}. By extension, when we call \code{mc\_weight} in our \code{uses} set, we are calling these columns as well. The \code{mc\_weight} class simply decides which one of these weights to use and saves the decision as a new column, also named \code{mc\_weight}, which is included in its \code{produces} set. Again, by extension, we must add the \code{mc\_weight} class to our own \code{produces} set such that this new column also gets created and saved to disk. 
+The  \CCSPStlye{Producer} class \code{mc\_weight} reads in the \code{genWeight} column and, if existent, the \code{LHEWeight} column, both stored in \code{events}. Since these columns are required, they are both added to the \code{uses} set of \code{mc\_weight}. By extension, when we call \code{mc\_weight} in our \code{uses} set, we are calling these columns as well. The \code{mc\_weight} class simply decides which one of these weights to use and saves the decision as a new column, also named \code{mc\_weight}, which is included in its \code{produces} set. At this point, we also have the option to add the \code{mc\_weight} class to our own \code{produces} set. In this way, the new column also gets created and saved to disk.
 
 Meanwhile, the \code{category\_ids} class assigns each event an array of category ids, which it stores as a new column also named \code{category\_ids}. Thus, we must also add this class to our \code{produces} set. The topic of defining categories is discussed in detail in the Section \ref{sec:categories}. Now that we have access to both these \CCSPStlye{Producer} classes, the \code{cutflow\_features} class can use them to attribute MC weights (if the dataset passed to it is tagged as an MC dataset) and category ids to \code{events}. It then creates a new column in the updated \code{events} object named \code{cutflow.jet1\_pt} which saves the transverse momentum of the most energetic jet in each event stored in \code{Jet.pt\text{[:,0]}}. If the event does not contain jets, it instead saves an \code{EMPTY\_FLOAT} value.