!-----------------------------------------------------------------------------
! Package     : EvtGen
! Responsible : Patrick Robbe, Mark Whitehead 
! Purpose     : 
!-----------------------------------------------------------------------------

! 2011-01-05 - John Back
 - EvtTensor4C.cpp: Correction to EvtTensor4C::cont() from Anders Ryd
 - EvtParticle.cpp: Removed assert from generateMassTree()

!========================= EvtGen v12r0 2010-12-09 ==========================
! 2010-12-09 - John Back
 Below is a summary of the merge between the latest BaBar & LHCb EvtGen code.
 - EvtCPUtil.cpp: Class interface changed to use static instance and not
   static functions. There are now two OtherB functions for coherent and 
   incoherent B pairs (set to incoherent by default for LHCb).
 - EvtGen.cpp: Added extra integer argument in constructor to choose 
   EvtCPUtil OtherB function type. Default is set to incoherent B pairs.
   Removed CLHEP includes.
 - All CP violation model classes: changes for new EvtCPUtil::OtherB()
   interface.
 - EvtLASSAmp.cpp: Added two sub-amplitude types LASS_ELASTIC and 
   LASS_RESONANT. The constructor takes an additional string to specify
   what amplitude is used (default is set to LASS, the original version).
 - Added EvtBaryonPCR and EvtBaryonPCRFF models for baryonic semileptonic 
   decays using more realistic dynamics.
 - EvtModelReg.cpp: Added EvtBaryonPCR model.
 - Added EvtSemiLeptonicBaryonAmp.cpp for the above baryon models.
 - EvtSemiLeptonicFF.hh: Added getdiracff() and getraritaff() methods for 
   the new baryon models. Since other semileptonic models (ModelNameFF.cpp) 
   use this class, they also need to implement these new methods (which
   actually do no extra calculations).
 - Changed EvtWilsonCoeficients to EvtWilsonCoefficients, used in 
   EvtGenModels/EvtLb2Lll.hh.

!========================= EvtGen v11r10 2010-10-12 ==========================
! 2010-10-12 - Patrick Robbe
 - EvtPythia.cpp: correct destructor to reset vector of Pythia commands

!========================== EvtGen v11r9 2010-07-08 ==========================
! 2010-06-24 - Mark Whitehead
 - EvtModelReg.cpp Turned EvtBToDDalitzCPK model back on

!========================= EvtGen v11r8p1 2010-05-09 =========================
! 2010-05-05 - Patrick Robbe
 - EvtPythia.cpp: use temporary file name to store Pythia new decay table

!========================== EvtGen v11r8 2010-01-26 ==========================
! 2010-01-26 - Patrick Robbe
 - EvtModelReg.cpp: reactivates Direct CPV

! 2010-01-22 - Patrick Robbe
 - EvtBTo3piCP.cpp: use OtherB function with 4 arguments to have this
   model working correctly in LHCb.
 - EvtCPUtil.cpp: abort when using EvtCPUtil::OtherB with 3 arguments as
   this does not work for hadronic environment
 - EvtBTo3pi.F: reintroduce changes made long time ago for 64 bits

!========================== EvtGen v11r7 2009-12-17 ==========================
! 2009-12-17 - Mark Whitehead
 - CPV Fix moved from EvtIncoherentMixing.cpp to EvtCPUtil.cpp so
   calls to the 4 paramater EvtCPUtil::OtherB from all decay models 
   can be tested.     

! 2009-11-27 - Mark Whitehead
 - Fix to EvtIncoherentMixing.cpp for slc5: <stdlib.h> included.

! 2009-11-24 - Mark Whitehead
 - Reintroduce file EvtIncoherentMixing.cpp to fix CPV problems.
 - EvtSSDCP.cpp: Swap EvtCPUtils::OtherB for EvtIncoherentMixing::OtherB. 
 - EvtSSDCP.cpp: Changes by Liming to fix CPV behaviour.

!========================== EvtGen v11r6 2009-11-04 ==========================
! 2009-10-19 - Patrick Robbe 
 - Fix gcc4.3 compilation, mainly dealing with scope of friend functions

!========================== EvtGen v11r5 2009-10-05 ==========================
! 2009-09-19 - Patrick Robbe for Marwa Jahjah Hussein
 - EvtLambdaB2LambdaV.h/.cpp: correct decay model

!========================== EvtGen v11r4 2009-09-18 ==========================
! 2009-09-03 - Patrick Robbe
 - EvtbTosllAli.cpp, EvtbTosllBall.cpp: correct bug in use of
   initializePhaseSpace function (missing 3rd argument)

! 2009-08-14 - Patrick Robbe
 - EvtModelReg: reactivate direct CPV model

!========================== EvtGen v11r3 2009-07-15 ==========================
! 2009-07-13 - Greig Cowan
 - Fixed EvtPVVCPLH model to use the new framework. Added getDeltaGamma() and
   getDeltaM() methods to EvtCPUtil.cpp. Added EvtPVVCPLH into the list of 
   allowed decay models.

!========================== EvtGen v11r2 2009-06-03 ==========================
! 2009-06-03 - Patrick Robbe
 - EvtParticle.cpp: Allow mixing of aliases

!========================== EvtGen v11r1 2009-05-27 ==========================
! 2009-05-25 - Mark Whitehead
 - EvtCPUtil.cpp: Bugs in incoherentmix routine fixed.

! 2009-04-14 - Patrick Robbe
 - EvtModelReg.cpp: reintroduce EvtLambdaB2LambdaV decay model

!========================== EvtGen v11r0 2009-04-08 ==========================
! 2009-04-08 - Patrick Robbe
 - Pythia.F: fix decay routine (wrong index when calling PYSHOW routine)

! 2009-04-02 - Patrick Robbe
 - Fix compilation warnings for slc4 at various places.

! 2009-03-28 - Patrick Robbe
 - EvtPythia.cpp: reintroduce LHCb Pythia model

! 2009-03-16 - Patrick Robbe
 - Move to new EvtGen version from Anders Ryd after merging BaBar
   and LHCb changes. 

! 2009-02-26 - Patrick Robbe
 - EvtParticleDecayList.cpp: fix case when decay mode is forced

!========================== EvtGen v10r2 2009-02-09 ==========================
! 2009-01-20 - Will REECE
 - EvtGen, EvtModelReg. Adds a hook so new decay models can be passed in from
   an external pacakge - in this case EvtGenExtras

!========================== EvtGen v10r1 2009-01-13 ==========================
! 2008-12-16 - Patrick Robbe
 - EvtGen, EvtModel, EvtPythia: fix memory leaks reported by valgrind

! 2008-12-11 - Patrick Robbe
 - EvtRanf: use double instead of float to be able to run in debug
   mode on 64 bit machines
 - EvtBTo3Pi.F: use double precision evtranf function for 64 bit 
   computers

!========================== EvtGen v10r0 2008-10-10 ==========================
! 2008-09-20 - Patrick Robbe
 - EvtGen/EvtGen.hh, src/EvtGen.cpp: remove CLHEP dependancy (remove 2 
   obsolete functions)
 - src/EvtConst.cpp: update pi value to be equal to the GAUDI one
 - src/EvtPythiaPart.F: remove "external pydata" since it is done in GENSER 
   package
 - src/EvtVub.cpp, EvtVubdGamma.cpp: start to remove CLHEP dependancy (usage 
   of CLHEP physical constants replaced by EvtConst::pi)
 - src/Pythia.F: update for Pythia6.4

!========================== EvtGen v9r2 2008-07-18 ===========================
! 2008-07-10 - Patrick Robbe
 - Remove compilation warnings

!========================== EvtGen v9r1 2008-03-20 ===========================
! 2008-03-20 - Gloria CORTI
 - Pythia.F: Remove dummy routine calling PYTIME. This requires changes in
   GENSER requirement file to resolve all symbols in libpythia6_dummy.so
   even when not called directly.

!========================== EvtGen v9r0 2008-02-08 ===========================
! 2008-01-08 - Patrick Robbe
 - Pythia.F: Add dummy subroutine calling PYTIME to force loading of 
   libpythia6_dummy.so in Gauss, with the new compilation options in
   CMT.

!======================== EvtGen v8r17 2007-12-07 =========================
! 2007-10-30 - Patrick Robbe
 - EvtPVVCPLH.cpp: corrections by Tristan du Pree

! 2007-10-14 - Patrick Robbe
 - Adapt static classes to windows compilation

! 2007-10-11 - Patrick Robbe
 - EvtIncoherentMixing: move inline access functions to static member 
   variables to .cpp files

!======================== EvtGen v8r16 2007-10-04 =========================
! 2007-09-21 - Patrick Robbe
 - EvtBtoXsgammaKagan.cpp: modifications by Peter Richardson, see
    https://savannah.cern.ch/bugs/index.php?28421

!======================== EvtGen v8r15 2007-02-08 =========================
! 2007-01-24 - Patrick Robbe
 - Add new class EvtDiLog to replace di-logarithm function DDILOG from
   the CERNLIB.
 - Modify code to use this new class: 
   . EvtGenModels/EvtbTosllAmp.hh
   . src/EvtBtoXsllUtil.cpp
   . src/EvtVubdGamma.cpp
   . src/EvtbTosllAmp.cpp

!======================== EvtGen v8r14 2006-12-05 =========================
! 2006-12-05 - Patrick Robbe
 - Fix sign convention in EvtPVVCPLH

! 2006-11-26 - Patrick Robbe
 - Fix bug in EvtSSDCP when generating Bs decays.

!======================== EvtGen v8r13 2006-11-09 =========================
! 2006-11-09 - Patrick Robbe
 - Add new decay model EvtSSD_DirectCP to generate direct CP violation.
 - Fix EvtSSDCP to also accept Bs decays.

!======================== EvtGen v8r12 2006-10-23 =========================
! 2006-10-16 - Patrick Robbe
 - Add new decay model EvtPVVCPLH for Bs -> J/psi phi decays (correct
   time dependant angular distributions).

!======================== EvtGen v8r11 2006-09-19 =========================
! 2006-09-06 - Gloria Corti
 - EvtGenBase/EvtPdfSum.hh: introduce "this->" to be able to compile on
   slc4

!======================== EvtGen v8r10 2006-08-28 =========================
! 2006-08-28 - Florence RANJARD
 - src/Pythia.F - fix the bug in pythiadec : when mstg(92) < 0 
   call pyshow (ip1,-3,p(1,5)) intead of call pyshow(ip1,-3,p(ip,5))

!======================== EvtGen v8r9 2006-05-19  ==========================
! 2006-04-23 - Patrick Robbe for Eric Conte
 - add new model EvtLambdaB2LambdaV to generate Lambda_b decays.

!======================== EvtGen v8r8 2006-03-28  ==========================
! 2006-03-28 - Florence RANJARD
 - cmt/requirements: remove special compilation flags now introduced in 
   GaudiPolicy

!======================== EvtGen v8r7 2006-03-12  ==========================
! 2006-03-12 - Patrick Robbe
 - cmt/requirements: build shared library for EvtGen and uses -O2 
   flag to compile FORTRAN files (to be compatible with GENSER 
    compilation flags)

! 2006-02-07 - Patrick Robbe
 - EvtGenBase/EvtRandomEngine.hh, EvtPartWave and EvtCGCoefSingle:
    fix memory leaks

!========================== EvtGen v8r6 ====================================
! 2005-11-20 - Patrick Robbe
 - EvtHepRandomEngine: adapt to use CLHEP 1.9.2.1

!========================== EvtGen v8r5 ====================================
! 2005-07-20 - Patrick Robbe
 - src/EvtBTo3pi.F
 - src/EvtBTo3piMPP.F
 - src/EvtBTo3piP00.F
 - src/EvtBToKpipi.F: remove calls to hbook functions to remove dependency
   to cernlib.

!============================== EvtGen v8r4p1 =============================
! 2005-06-10 - Gloria CORTI
 - Changes to make code compatible with both CLHEP 1.8 and 1.9 (to
   allow to be used in DC04)
   . src/EvtGen.cpp, EvtVub.cpp, EvtGen/EvtGen.h, EvtGenModels/EvtVub.h

!============================== EvtGen v8r4 ===============================
! 2005-04-05 - Patrick Robbe for Federica Legger
 - src/EvtDiracParticle : fix bug in Dirac spinor

!=================== EvtGen v8r3 ===============================
! 2005-02-21 - Patrick Robbe
 - src/Pythia.F : suppress some printout

!=================== EvtGen v8r2 ===============================
! 2005-02-01 - Florence RANJARD
 - requirements - move photos link options to GENSER
                  remove use PYTHIA which is included in GENSER

!================== EvtGen v8r1 ==================================
! 2005-01-25 - Patrick Robbe
 - changes for CLHEP 1.9 (add namespaces in forward declarations)

!=================== EvtGen v8r0 =================================
! 2005-01-10 - Patrick Robbe
 - changes for new PHOTOS version

!==================== EvtGen v7r0 ================================
! 2004-11-15 - Patrick Robbe
 - change size of HEPEVT to 10000. (changes also requested in some
   photos subroutines located in subdirectory photos)
 - use photos2.07 instead of photos 2.02 from GENSER.

! 2004-10-08 - Patrick Robbe
 - EvtDDalitz : update resonance parameters for D0-> K0 K+ K-

! 2004-09-07 - Patrick Robbe
 - EvtDDalitz: add D0 -> K0s K+ K- decay mode and measured resonances

!================ EvtGen v6r0 ===================================
! 2004-08-31 - Florence RANJARD
 - requirements - take photos from GENSER

!================= EvtGen v5r6 ====================================
! 2004-08-02 - Gloria CORTI
 - requirements, adapt to LCG interfaces packages

!================= EvtGen v5r5 ====================================
! 2004-07-29 - Patrick Robbe
 - add photos subdirectory to contain PHOTOS fixes.
 - photos/phoene.F: temporary fix to deal with Bs0 -> phi e+ e- decays
   in PHOTOS
 - requirements: remove phoene symbol from PHOTOS link statement

! 2004-07-15 - Patrick Robbe
 - requirements: fix for PHOTOS link for windows

! 2004-07-12 - Patrick Robbe
 - *.cpp : remove #pragma warning( disable : 4786 ) for windows compilation
   (VC++ 7.1 does not need it anymore)
 - EvtGenModels/common_hepevt.inc: add a <CR> at the end of the file for
   windows compilation

! 2004-07-09 - Patrick Robbe
 - EvtLambdaP_BarGamma.cpp : use sqrt(2.) instead of sqrt(2) for windows
   compilation.
 - EvtVub.cpp : use pow(10., ...) instead of pow(10, ...) for Windows
   compilation.

!================= EvtGen v5r4 ====================================
! 2004-06-08 - Patrick Robbe
 - EvtDDalitz.cpp : correct Complex amplitude for D0 -> Ks pi pi
   decays from B.

! 2004-05-26 - Patrick Robbe
 - EvtDDalitz.cpp : check that the mother particle is a B before
   asking for the decay model name.

!================== EvtGen v5r3 ====================================
! 2004-05-06 - Patrick Robbe
 - EvtPHOTOS: fix use of PHOTOS
 - begevtgen*.F, EvtGen.cpp, common_hepevt.inc, stdhep.inc : use correct 
   up-to-date HEPEVT common block and remove reference to old STDHEP common
   block
 - cmt/requirements: increase version number to v5r3 and use recent
   photos202.lib instead of photos.lib which contains old HEPEVT 
   common block definitions.

!=================== EvtGen v5r2 ====================================
! 2004-03-22 - Patrick Robbe
 - Fix bug in EvtParticleTable

! 2004-03-15 - Patrick Robbe
 - Fix memory leaks in EvtBToXsll.cpp

! 2004-03-09 - Patrick Robbe
 - EvtSLN : give a probmax for decays B_c -> tau nu_tau to avoid 
   warnings at EvtGEn initialization. 
 - cmt/requirements : increase version to v5r2

!===================== EvtGen v5r1 ===================================
! 2004-03-08 - Patrick Robbe
 - EvtIncoherentMixing : put PDG 2004 mixing parameters as default values
    for the mixing (Delta m_s, Delta m_d, Delta Gamma_s, Delta Gamma_d)
 - EvtPDL : add evtIdFromLundKC to be able to retrieve a particle ID 
    from the Pythia ID
 - EvtBTo3piCP, EvtBTo4piCP, EvtBToKpipiCP, EvtBto2piCPiso,
   EvtSSSCP, EvtSSSCPT, EvtSTSCP, EvtSVPCP, EvtSVSCP, EvtSVSCPiso,
   EvtSVSNONCPEIGEN, EvtSVVCP, EvtSVVCPLH, EvtSVVNONCPEIGEN : 
    add the possibility to flip the event to generate CP violation
    in a Incoherent B-Bbar production environment.
 - EvtISGW2 : adjust max prob for B_s -> D's1 tau nu_tau decays
 - EvtPythia : use LundKC property of the EvtId class to store Pythia
   ID which is available from ParticleTable.txt since Gaudi v14r3

! 2004-02-06 - Patrick Robbe
 - modifications to use B_s -> omega e+ e- decays

! 2004-01-15 - Patrick Robbe
 - modifications in order to compile with Windows VC7 compiler.

!======================== EvtGen v5r0 ===============================
! 2004-01-12 - Patrick Robbe
 - synchronization with BaBar version alpha-00-11-07 (december 2003
   release)

! 2004-01-08 - Patrick Robbe
 - EvtPythia : do not update quark, higgs and special particle properties
   and keep the Pythia default values.
 - requirements : increase to v4r4

!======================== EvtGen v4r3 =================================
! 2003-12-12 - Patrick Robbe
 - bug fix in EvtDDalitz.cpp

! 2003-12-10 - Patrick Robbe
 - modify EvtSVVCPLH.cpp to be able to define the parameter deltaGamma
   in decay files.
 - modify the default DeltaGamma_s value in EvtIncoherentMixing
 - remove dependences to B_s0L and B_s0H

! 2003-12-09 - Florence Ranjard
 - requirements - remove explicit version numbers

! 2003-12-09 - Patrick Robbe
 - Add model BToDDalitzCPK to generate B0->D0 K*0 and B+->D0 K+ with
    D0->Ks pi+ pi-
 - EvtDDalitz : add some resonances and change parameters to the decay
    D0->Ks pi+ pi-
 - EvtModelReg : declare BToDDalitzCPK model
 - EvtResonance2 : add spin-2 resonances
 - requirements : increase to v4r3

!===================== EvtGen v4r2 ====================================
! 2003-11-18 - Patrick Robbe
 - requirements : remove dependancy to GaudiKernel
 - EvtBTo3pi.F, EvtBTo3piMPP.F, EvtBTo3piP00.F, EvtBToKpipi.F : use
    evtranf instead of ranf to ensure reproducibility
 - cranf.cpp, ranf.F : remove and use EvtRanf.cpp instead
 - EvtBTo3piCP.cpp, EvtBToKpipiCP.cpp, EvtCBTo3piMPP.cpp, EvtCBTo3piP00.cpp,
   EvtGen.cpp : changes to reproduce all events in B->3 pi decays 
   (and similar decay modes).

! 2003-11-06 - Patrick Robbe
 - EvtHelAmp.cpp : fix for windows
 - EvtIncoherentMixing.cpp : fix for windows
 - EvtHQET2FF.hh, EvtHQETFF.hh : remove unnecessary EvtHQET2FF::,
      EvtHQETFF:: declarations
 - increment version in requirements to v4r2

! 2003-11-05 - Patrick Robbe
 - EvtPartProp.hh : remove EvtPartProp:: declaration

!===================== EvtGen v4r1 =====================================
! 2003-10-30 - Patrick Robbe
 - EvtIncoherentMixing : fix the t distribution for mixed events

! 2003-10-29 - Patrick Robbe
 - EvtIncoherentMixing : fix B_s0 name

! 2003-10-27 - Patrick Robbe
 - EvtIncoherentMixing : if B0/B0s has already mixed and the CP models
   need to flip the flavour of the B, flip both flavours (B0 mother
   and B0 daughter)

! 2003-10-21 - Patrick Robbe
 - EvtISGW2 : initialize ISGW2 decay model for B_s0
 - Implement CP violation with incoherent B production

! 2003-10-20 - Patrick Robbe
 - EvtHelAmp, EvtParticleDecayList, EvtbTosllBall : fix memory leaks

! 2003-10-14 - Patrick Robbe
 - EvtPythia : add diquark definitions
 - EvtParticle : add the possibility to oscillate with alias B0 and B0s
   particles
 - EvtCPUtil : temporary fix to prevent modifying a B* decay tree because
   it thinks it is an Upsilon(4S) tree

!===================== EvtGen v4r0 ======================================
! 2003-10-10 - Patrick Robbe
 - EvtPythia : do not update diquark masses in Pythia
 - EvtIncoherentMixing : add incoherent B0/B0bar and Bs/Bsbar mixing. 

! 2003-10-09 - Patrick Robbe
 - Fixes in EvtParticle for B0s mixing

! 2003-10-07 - Patrick Robbe
 - use pythia routine pycomp to find pythia particle number from PDG
   number instead of EvtPDL::getLundKC, in EvtPythia.cpp

! 2003-10-02 - Patrick Robbe
 - new version of the package EvtGen, version alpha-00-10-22 (July 3, 2003) 
   taken from www.slac.stanford.edu/~lange/EvtGen
 - two new header directories EvtGenModels and EvtGenBase
 - some changes to compile on Windows
 - put back the changes by Nick Brook and Witek Pokorski in the Pythia
   related files
 - increment version in requirement file to v4r0

!==================== EvtGen v3r4 =======================================
! 2003-07-15 - Patrick Robbe
 - cranf.cpp , ranf.F : code to use Gaudi random engine (replace ranf()
                        which is used in EvtBTo3pi.F

!==================== EvtGen v3r3 ========================================
! 2003-07-07 - Florence RANJARD
 - fix for gcc3.2 (S.Ponce)

!==================== EvtGen v3r2 ==========================================
! 2003-02-26 - Florence Ranjard
   following corrections are mandatory on Win32
 - remove EvtJetSet.cpp~
 - EvtJetSet.hh - include <iostream> and <fstream>
 - EvtJetSet.cpp - include <fstream> and <iomanip> instead of <fstream.h> and
                   <iomanip.h>
                   prefix setw, setiosflags and resetiosflags with std::

!===================== EvtGen v3r1 ========================================
! 2002-08-05 - Florence Ranjard
 - requirements - use PYTHIA v2r6205p*

!=================== EvtGen v3r0 ============================================
! 2002-07-23 - Nick Brook

- all calls to JETSET7.4 updated for PYTHIA6.2. Common block changed.
- the format of the PYTHIA decay tables have changed. EvtGen uses a
PYUPDA. This file is now written in correct fromat
- PYTHIA decay tables are only updated for particles that EvtGen will
use PYTHIA to decay.
- Masses, widths etc in PYTHIA are updated internally with the values
from the PDT table file
- removed linking to JetSet7.4 from the requirements (Witek)

!=================== EvtGen v2r0 ============================================
! 2002-07-15 - Florence Ranjard
  requirements - use CLHEP 1.8.0.0
 
! ================== EvtGen v1r0 ============================================

! 20020411 - EvtGen v1r0 Witek Pokorski
- New package

  B-decay package developed by D.Lange and A.Ryd. 
  Provides a framework for the implementation of processes relevant to B-mesons
  decays and other resonances (see http://www.slac.stanford.edu/~lange/EvtGen/). 

! ================== EvtGen v0r0 ===========================================