hitfit::Constrained_Z Class Reference

Do a constrained kinematic fitting for a event. More...

#include <Constrained_Z.h>

Public Member Functions
double	constrain (Lepjets_Event &ev, Column_Vector &pull)
	Do a constrained fit of event. Returns the pull quantities in pull. Returns the , this will be negative if the fit failed to converge. More...
	Constrained_Z (const Constrained_Z_Args &args)
	Constructor, create an instance of the Constrained_Z object from the argument object. More...

Private Attributes
const Constrained_Z_Args &	_args
Fourvec_Constrainer	_constrainer

Friends
std::ostream &	operator<< (std::ostream &s, const Constrained_Z &cz)
	Output stream operator, print the content of this Constrained_Z to an output stream. More...

Detailed Description

Do a constrained kinematic fitting for a event.

Definition at line 102 of file Constrained_Z.h.

Constructor & Destructor Documentation

Constrained_Z()

hitfit::Constrained_Z::Constrained_Z

(

const Constrained_Z_Args &

args

)

Constructor, create an instance of the Constrained_Z object from the argument object.

Parameters

args	Argument for this instance of Constrained_Z object.

Definition at line 78 of file Constrained_Z.cc.

      : _args(args), _constrainer(args.fourvec_constrainer_args()) {
    char buf[256];
    sprintf(buf, "(%d) = %f", lepton_label, _args.zmass());
    _constrainer.add_constraint(buf);
  }

References _args, _constrainer, hitfit::Fourvec_Constrainer::add_constraint(), visDQMUpload::buf, hitfit::lepton_label, and hitfit::Constrained_Z_Args::zmass().

Member Function Documentation

constrain()

double hitfit::Constrained_Z::constrain	(	Lepjets_Event &	ev,
		Column_Vector &	pull
	)

Do a constrained fit of event. Returns the pull quantities in pull. Returns the , this will be negative if the fit failed to converge.

Parameters

ev	The event to be fitted (input), and the event after fitting (output).
pull	Pull quantities for the well-measured variables.

Input:

• Lepjets_Event ev.

Output:

• Lepjets_Event ev.
• Column_Vector pull.

Return:

The of the fit. Return a negative value if the fit didn't converge.

Definition at line 201 of file Constrained_Z.cc.

  {
    Fourvec_Event fe;
    do_import(ev, fe);
    Column_Vector pully;
    double m, sigm;
    double chisq = _constrainer.constrain(fe, m, sigm, pull, pully);
    do_export(fe, ev);
 
    return chisq;
  }

References _constrainer, hitfit::Fourvec_Constrainer::constrain(), ev, and visualization-live-secondInstance_cfg::m.

Friends And Related Function Documentation

operator<<

std::ostream& operator<< ( std::ostream &  s, const Constrained_Z &  cz  )

friend

Output stream operator, print the content of this Constrained_Z to an output stream.

Parameters

s	The output stream to which to wrire.
cz	The instance of Constrained_Z to be printed.

Definition at line 236 of file Constrained_Z.cc.

  {
    return s << cz._constrainer;
  }

Member Data Documentation

_args

const Constrained_Z_Args& hitfit::Constrained_Z::_args

private

Parameter settings for the constrainer.

Definition at line 147 of file Constrained_Z.h.

Referenced by Constrained_Z().

_constrainer

Fourvec_Constrainer hitfit::Constrained_Z::_constrainer

private

The guy that actually does the work.

Definition at line 153 of file Constrained_Z.h.

Referenced by constrain(), Constrained_Z(), and hitfit::operator<<().