What are the differences between NanoAOD and MiniAOD
+
+
In the previous episode, we found the description of the NanoAOD
+variables.
+
Let us now compare it to the MiniAOD format. Note that the variable
+descriptions are not available attached to the datasets, but we can have
+a look at the MiniAOD
+description in the CMS WorkBook.
+
You will see a table starting with:
+
The objects in the MiniAOD format are C++ classes in CMSSW, the CMS
+Software package, and the table gives the class name. We can find the
+exact class description in the CMSSW reference manual. See, for
+example
These are C++ classes that can inherit information from
+parent classes or contain objects, of some complex types. Therefore,
+some of the variables are not explicitly listed as they are available
+through other objects.
+
For example, for MiniAOD, we will not find eta or
+pt explicitly in the class description as they can be
+obtained through the LorentzVector object. This is
+transparent in the code when accessing those values, but much less so in
+the documentation!
+
Let us now compare it to NanoAOD. The major difference is that
+MiniAOD contains most of the constituents of a physics object (such as
+tracks and/or calorimeter clusters) whereas NanoAOD only contains some
+information about them.
+
NanoAOD with particle flow candidates
+
+
Many CMS open data users have relied on the Particle
+flow information, available in the MiniAOD format but not in the
+NanoAOD format. See the class description: `pat::Packe.
Use .md files for episodes when you want static
-content
-
Use .Rmd files for episodes when you need to generate
-output
-
Run sandpaper::check_lesson() to identify any issues
-with your lesson
-
Run sandpaper::build_lesson() to preview your lesson
-locally
+
Analyses that require detailed information about physics object
+constituents may require using MiniAOD instead of NanoAOD
+
Selected datasets include Particle flow candidates in an enriched
+NanoAOD format are available and their use does not require using
+CMS-specific software
+
CMSSW environment is available as a Docker container and can be used
+to work with MiniAOD
