scharm to charm cutflow

simple cutflow for scharm to charm analysis

Important things

what this is for

This code was designed to do several things:

• Serve as a reference: I've tried to keep src/cutflow.cxx as simple and readable as possible. Most of the cuts are hard-coded, and I've tried to use functions only when they make things more clear.
• Compile anywhere: Assuming you have ROOT and SUSYTools installed, and that ROOTCOREDIR is set, it should build with make.
• Test common tools:

• c-tagging SF code, which consists of three files:

• src/CtagCalibration.cxx and include/CtagCalibration.hh: a wrapper for CalibrationDataInterface (the official b-tagging scalefactor package), which applies the "medium" JetFitterCharm scale factors and hides some of the ugliness of the underlying package.
• include/ctag_defs.hh: lightweight miscellaneous c-tag definitions.

• mctlib: copied from the sbottom analysis, for mt2, mct, etc.

what this isn't for

This isn't a framework. It's not supposed to be used to fill histograms, create ntuples, optimize selections, lookup cross sections, or set limits. It's not supposed to have any dependencies that SUSYTools doesn't have.

simple instructions

If you have SUSYTools installed and ROOTCOREDIR is set, you should be able to type

make

which will produce an executable called cutflow. Running

./cutflow root_file1.root root_file2.root ...

will run the cutflow over these root files and print a summary.

The executable expects several extra files in the run directory (it's probably easiest to sotflink them to the appropriate files):

• grl.xml: good runs list (only used with data)
• cdi.root: b-tagging calibration file. For JetFitterCharm it should be 2013-Winter-rel17.2.1.4_MC12-83.root

Less important things

what are all these other files?

Aside from the familiar makefile to build, and the cutflow.cxx file itself there are a few extra files kicking around:

• map_libs.sh is used by makefile to link to SUSYTools
• CtagCalibration is a wrapper for the c-tagging calibration data interface, hopefully a bit simpler to use.
• CutCounter is basically a map which keeps track of the order in which cuts are counted (so we can dump them in order)
• LinkDef.hh is used to tell ROOT how to read vectors from D3PDs
• SmartChain is derived from TChain, but throws exceptions when things go wrong (rather than continuing on) and makes setting branches easier.
• SusyBuffer holds the information that's read out of the D3PD. It's something like what comes out of MakeClass, but with less garbage code.
• ctag_defs.hh contains general definitions used by CtagCalibration.