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paus |
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//==================================================================================================
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// MvfInterface class header file
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//
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// Author: Christoph Paus, MIT
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// Description: Provide a CMS specific interface for the generic MultiVertexFitter.
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// Date: Jul 18, 2008
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//==================================================================================================
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#ifndef MVFINTERFACE_H
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#define MVFINTERFACE_H
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#include "DataFormats/TrackReco/interface/Track.h"
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#include "MitVertex/Fit/interface/MultiVertexFitter.h"
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namespace mitedm
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{
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// Declare the class
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class MvfInterface {
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// ---------------------------------------------------------------------------------------------
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// CMS parameter ordering for the vector/matrix, which is assumed here:
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//
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bendavid |
1.2 |
// qoverp, lambda = pi/2 - theta, phi0, dxy, dsz;
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paus |
1.1 |
// mapping to CDF is therefore { 1, 0*, 4, 3, 2 }, where * indicates that a transformation is
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// needed
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//
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// Note that the radius of curvature (in cm) is then:
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//
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// Rc = cos(theta) / [ 0.0029979.... * (q/p) * B ],
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//
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// where B is the magnetic field in Tesla and tht is the angle between the field and the
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// direction. With p * cos(theta) = pT it follows:
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//
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// Rc = pT / [ 0.0029979.... * q * B ],
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// fullCurvature = 1 / Rc = 0.0029979 * q * B / pT = - 0.0029979 * B / pT.
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//
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// see the conventions for the MultiVertexFitter in its own header file.
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// ---------------------------------------------------------------------------------------------
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public:
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// ---------------------------------------------------------------------------------------------
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// *structors
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// ---------------------------------------------------------------------------------------------
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MvfInterface(MultiVertexFitter *fitter);
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~MvfInterface() {}
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// ---------------------------------------------------------------------------------------------
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// Fundamental funtions
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// ---------------------------------------------------------------------------------------------
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bool addTrack(const reco::Track* trk, const int id, const float mass,
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MultiVertexFitter::vertexNumber jv);
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// ---------------------------------------------------------------------------------------------
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// Accessors
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// ---------------------------------------------------------------------------------------------
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MultiVertexFitter *fitter() { return _mvf; }
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private:
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// ---------------------------------------------------------------------------------------------
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// Data members of class
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// ---------------------------------------------------------------------------------------------
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MultiVertexFitter *_mvf;
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double _fCurv0;
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double _fCurv;
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};
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}
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#endif
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