#ifndef _D_CONSTANTS_H_
#define _D_CONSTANTS_H_

/***********************************************************************
**                                                                    **
**          /----------------------------------------------\          **
**         |  Delphes, a framework for the fast simulation  |         **
**         |       of a  generic collider experiment        |         **
**          \-------------  arXiv:0903.2225v1  ------------/          **
**                                                                    **
**                                                                    **
**   This package uses:                                               **
**   ------------------                                               **
**   ROOT: Nucl. Inst. & Meth. in Phys. Res. A389 (1997) 81-86        **
**   FastJet algorithm: Phys. Lett. B641 (2006) [hep-ph/0512210]      **
**   Hector: JINST 2:P09005 (2007) [physics.acc-ph:0707.1198v2]       **
**   FROG: [hep-ex/0901.2718v1]                                       **
**   HepMC: Comput. Phys. Commun.134 (2001) 41                        **
**                                                                    **
** ------------------------------------------------------------------ **
**                                                                    **
**   Main authors:                                                    **
**   -------------                                                    **
**                                                                    **
**                Severine Ovyn                Xavier Rouby           **
**          severine.ovyn@uclouvain.be      xavier.rouby@cern         **
**                                                                    **
**         Center for Particle Physics and Phenomenology (CP3)        **
**                Universite catholique de Louvain (UCL)              **
**                     Louvain-la-Neuve, Belgium                      **
**                                                                    **
**                      Copyright (C) 2008-2009,                      **
**                        All rights reserved.                        **
**                                                                    **
***********************************************************************/

/// \file D_Constants.h
/// \brief List of constants 
#ifndef __PI__
#define __PI__
const float pi = 3.14159265358979312;
#endif

// particles PID (PDG ID)
const int pU   = 1;    // c quark
const int pD   = 2;    // b quark
const int pS   = 3;    // s quark
const int pC   = 4;    // c quark
const int pB   = 5;    // b quark
const int pE   = 11;   // e
const int pNU1 = 12;   // nu_e
const int pMU  = 13;   // mu
const int pNU2 = 14;   // nu_mu
const int pTAU = 15;   // tau
const int pNU3 = 16;   // nu_tau
const int pGLUON = 21; // gluon
const int pGAMMA = 22; // gamma
const int pW   = 24;   // W
const int pP   = 2212; // proton
const int pN   = 2112; // neutron
const int pPI0 = 111;  // pi_0
const int pK0L = 130;  // K^0_L
const int pK0S = 310;  // K^0_S
const int pLAMBDA = 3122; // Lambda
const int pSIGMA0 = 3212;  // Sigma^0
const int pDELTA0 = 2114;  // Delta^0

const double speed_of_light = 299792458; // m/s
const float UNDEFINED=-9999.;
const int iUNDEFINED=-9999;

#endif