TagEfficiency.hpp File Reference

The tag-efficiency correction, and its contract with the cross section. More...

#include "RegionCuts.hpp"
#include <Rtypes.h>
#include <TCutG.h>
#include <TString.h>
#include <map>
#include <vector>

Include dependency graph for TagEfficiency.hpp:

Go to the source code of this file.

Classes
struct	TagEfficiencyRecord
	One channel and strip's efficiency, as the cross section consumes it. More...
class	TagEfficiency
	The bootstrap method for measuring the tag efficiency. More...

Namespaces
namespace	TagEfficiencyStore
	Persistence for the efficiency records.

Functions
TString	TagEfficiencyStore::Path ()
	Path to the store.
void	TagEfficiencyStore::Write (const TString &channel, const std::vector< TagEfficiencyRecord > &records, const TString &method)
	Replace one channel's records, keeping every other channel's.
Bool_t	TagEfficiencyStore::Load (const TString &channel, Int_t reac, TagEfficiencyRecord &record)
	Read one record.
TString	TagEfficiencyStore::Method ()
	The method label stamped into the store.

Detailed Description

The tag-efficiency correction, and its contract with the cross section.

Whatever method produces it, the efficiency side hands the cross section one record per channel and reaction strip: the count it applies to, the fraction of true reactions at that strip that end up in that count, and the fraction counted one strip late instead.

The cross section then applies one formula,

N_true(r) = (n_counted(r) - migrate(r-1) * N_true(r-1)) / eff(r)

and never needs to know how the numbers were made. Change the method, keep the record, and the cross section keeps working.

Definition in file TagEfficiency.hpp.