/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
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 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
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 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
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 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/


//-------------------------------------------------------------------------
//            Helper -DATA  class ESD V0 vertex class
//            contains effective errror parameterization 
//            Effective parameterization of resolution in DCA and PA  as function of radii and momenta
//            Mini-max coeficient    fPMinFraction... fPMaxFraction...
//                                   as limits for Error parameterization using Covariance matrix             
//            For detailes : see  AliESDv0 class   
//             
//    Origin: Marian Ivanov marian.ivanov@cern.ch
//-------------------------------------------------------------------------


#include "AliESDV0Params.h"


ClassImp(AliESDV0Params)


AliESDV0Params::AliESDV0Params() :
  TObject(),
  // These constants are used in the error parameterization using covariance matrix
  // minimal sigma in AP and DCA 
  fPSigmaOffsetD0(0.03),      // minimal sigma of error estimate
  fPSigmaOffsetAP0(0.005),
  //
  // Effective parameterization of DCA resolution as function of pt and decay radii
  //
  fPSigmaMaxDE(0.5),
  fPSigmaOffsetDE(0.06),
  fPSigmaCoefDE(0.02),
  fPSigmaRminDE(2.7),
  //
  //
  // Effective parameterization of PA resolution as function of pt and decay radii
  //
  fPSigmaBase0APE(0.005),
  fPSigmaMaxAPE(0.06),
  fPSigmaR0APE(0.02),
  fPSigmaR1APE(0.1), 
  fPSigmaP0APE(0.7*0.4),
  fPSigmaP1APE(0.3*0.4),
  //
  //
  // Minimax parameters
  //
  fPMinFractionAP0(0.5),
  fPMaxFractionAP0(1.5),
  fPMinAP0(0.003),
  fPMinFractionD0(0.5),
  fPMaxFractionD0(1.5),
  fPMinD0(0.05)
  //

{
  //
  // Default constructor
  // Consult AliESDv0 to see actual error parameterization 
  //
}