C++ Blob::SetTypeSpec方法代码示例

ATOOLS::Blob* Mixing_Handler::PerformMixing(Particle* decayer) const
{
  // explicit mixing in event record
  Flavour flav = decayer->Flav();
  string tag = flav.IsAnti() ? flav.Bar().IDName() : flav.IDName();
  if(m_model("Mixing_"+tag,0.0)!=0.0 && decayer->Info()!=char('M')) {
    double t = DetermineMixingTime(decayer,true)/rpa->hBar();
    if(t==0.0) return NULL;
    double factor = decayer->Flav().QOverP2();
    if(decayer->Flav().IsAnti()) factor = 1.0/factor;
    double dG = decayer->Flav().DeltaGamma()*t/4.0;
    double dm = decayer->Flav().DeltaM()*t/2.0;
    Complex i(0.0,1.0);
    double prob_not_mix = sqr(abs(exp(i*dm)*exp(dG)+exp(-i*dm)*exp(-dG)));
    double prob_mix = factor*sqr(abs(exp(i*dm)*exp(dG)-exp(-i*dm)*exp(-dG)));
    if(prob_mix > ran->Get()*(prob_mix+prob_not_mix)) {
      if(decayer->DecayBlob()) {
        decayer->DecayBlob()->RemoveOwnedParticles();
        delete decayer->DecayBlob();
      }
      decayer->SetStatus(part_status::decayed);
      decayer->SetInfo('m');
      Particle* mixed_part = new Particle(0, decayer->Flav().Bar(),
                                          decayer->Momentum(), 'M');
      mixed_part->SetFinalMass(decayer->FinalMass());
      mixed_part->SetStatus(part_status::active);
      mixed_part->SetTime(decayer->Time());
      Blob* mixingblob = new Blob();
      mixingblob->SetType(btp::Hadron_Mixing);
      mixingblob->SetId();
      mixingblob->SetStatus(blob_status::inactive);
      mixingblob->SetTypeSpec("HADRONS");
      mixingblob->AddToInParticles(decayer);
      mixingblob->AddToOutParticles(mixed_part);
      mixingblob->SetPosition(decayer->ProductionBlob()->Position());
      mixingblob->SetStatus(blob_status::needs_hadrondecays);
      return mixingblob;
    }
  }
  return NULL;
}

void Hard_Decay_Handler::CreateDecayBlob(ATOOLS::Particle* inpart)
{
  DEBUG_FUNC(inpart->Flav());
  if(inpart->DecayBlob()) THROW(fatal_error,"Decay blob already exists.");
  if(!Decays(inpart->Flav())) return;
  Blob* blob = p_bloblist->AddBlob(btp::Hard_Decay);
  blob->SetStatus(blob_status::needs_showers);
  blob->AddStatus(blob_status::needs_extraQED);
  blob->AddToInParticles(inpart);
  blob->SetTypeSpec("Sherpa");
  Decay_Table* table=p_decaymap->FindDecay(blob->InParticle(0)->Flav());
  if (table==NULL) {
    msg_Error()<<METHOD<<" decay table not found, retrying event."<<endl
               <<*blob<<endl;
    throw Return_Value::Retry_Event;
  }
  blob->AddData("dc",new Blob_Data<Decay_Channel*>(table->Select()));

  DEBUG_INFO("p_onshell="<<inpart->Momentum());
  blob->AddData("p_onshell",new Blob_Data<Vec4D>(inpart->Momentum()));
  DEBUG_INFO("succeeded.");
}

Return_Value::code Signal_Process_FS_QED_Correction::Treat
(Blob_List * bloblist, double & weight)
{
  if (!m_on) return Return_Value::Nothing;
  if (bloblist->empty()) {
    msg_Error()<<"Signal_Process_FS_QED_Correction::Treat"
	       <<"("<<bloblist<<","<<weight<<"): "<<endl
               <<"   Blob list contains "<<bloblist->size()<<" entries."<<endl
               <<"   Continue and hope for the best."<<endl;
    return Return_Value::Error;
  }
  // look for QCD corrected hard process in need for QED
  Blob * sigblob(bloblist->FindLast(btp::Shower));
  if (!sigblob) return Return_Value::Nothing;
  // if already treated -> nothing to do
  if (sigblob->TypeSpec()=="YFS-type_QED_Corrections_to_ME")
    return Return_Value::Nothing;
  if (sigblob->TypeSpec()=="setting_leptons_on-shell")
    return Return_Value::Nothing;
  // extract FS leptons
  // two vectors -> the ones from the blob and the ones to be massive
  DEBUG_FUNC(m_qed);
  Particle_Vector fslep(sigblob->GetOutParticles());
  Particle_Vector mfslep;
  for (Particle_Vector::iterator it=fslep.begin();it!=fslep.end();) {
    if ((*it)->Flav().Strong() || (*it)->Flav().IsDiQuark() || 
	(*it)->DecayBlob()!=NULL) {
      fslep.erase(it);
    }
    else {
      mfslep.push_back(new Particle(-1,(*it)->Flav(),(*it)->Momentum(),'F'));
      (*mfslep.rbegin())->SetNumber(0);
      (*mfslep.rbegin())->SetOriginalPart(*it);
      (*mfslep.rbegin())->SetFinalMass((*it)->FinalMass());
      ++it;
    }
  }
  // if no leptons, nothing to do
  // if only one lepton, cannot do anything
  if (fslep.size()<2) {
    sigblob->UnsetStatus(blob_status::needs_extraQED);
    for (Particle_Vector::iterator it=mfslep.begin();it!=mfslep.end();++it)
      delete *it;
    return Return_Value::Nothing;
  }
  // if switched off or no need for QED stop here and build a blob
  if (!m_qed || !sigblob->Has(blob_status::needs_extraQED)) {
    Blob * onshellblob = bloblist->AddBlob(btp::QED_Radiation);
    onshellblob->SetTypeSpec("setting_leptons_on-shell");
    if (sigblob->Has(blob_status::needs_extraQED))
      sigblob->UnsetStatus(blob_status::needs_extraQED);
    for (Particle_Vector::iterator it=fslep.begin();it!=fslep.end();++it) {
      (*it)->SetInfo('H');
      (*it)->SetStatus(part_status::decayed);
      onshellblob->AddToInParticles(*it);
    }
    for (Particle_Vector::iterator it=mfslep.begin();it!=mfslep.end();++it) {
      onshellblob->AddToOutParticles(*it);
    }
    onshellblob->SetStatus(blob_status::needs_hadronization);
    return Return_Value::Success;
  }
  // put them on-shell (spoils consistency of pertubative calculation,
  // but necessary for YFS)
  if (!PutOnMassShell(mfslep)) {
    msg_Error()<<"Signal_Process_FS_QED_Correction::Treat("
	       <<bloblist<<","<<weight<<"): \n"
               <<"  Leptons could not be put on their mass shell.\n"
               <<"  Trying new event.\n"
               <<"  The event contained a ";
    for (Particle_Vector::iterator it=mfslep.begin();it!=mfslep.end();++it)
       msg_Error()<<(*it)->Flav().ShellName()<<"-";
    if (mfslep.size()==2) msg_Error()<<"pair";
    else                  msg_Error()<<"set";
    msg_Error()<<" of too little invariant mass to be put\n"
	       <<"  on their mass shell. If you are sensitive to this specific"
	       <<" signature consider\n  to set the respective particles"
	       <<" massive in the perturbative calculation using\n"
	       <<"  'MASSIVE[<id>]=1' to avoid this problem.\n";
    for (Particle_Vector::iterator it=mfslep.begin();it!=mfslep.end();++it)
      delete *it;
    return Return_Value::New_Event;
  }
  // build effective verteces for resonant production
  // use subprocess infos if possible
  Blob_Vector blobs = BuildResonantBlobs(mfslep);
  // add radiation
  for (Blob_Vector::iterator it=blobs.begin();it!=blobs.end();++it) {
    // do nothing if no resonance determined
    if ((*it)->InParticle(0)->Flav().Kfcode()!=kf_none) {
      (*it)->SetStatus(blob_status::needs_extraQED);
      if (!p_sphotons->AddRadiation(*it)) {
        msg_Error()<<"Signal_Process_FS_QED_Correction::Treat("<<bloblist
                   <<","<<weight<<"): "<<endl
                   <<"  Higher order QED corrections failed."<<endl
                   <<"  Retrying event."<<endl;
        for (Particle_Vector::iterator it=mfslep.begin();it!=mfslep.end();++it)
          delete *it;
        for (Blob_Vector::iterator it=blobs.begin();it!=blobs.end();++it)
          delete *it;
//.........这里部分代码省略.........