 {
   if (!event) return false;
     
   if ( event->getReadAttempts() > 0 ) return false; // record already tried
     
   const lhef::HEPEUP &hepeup = *event->getHEPEUP();
     
   if ( !hepeup.NUP ) return false;  
 
   setProcess(hepeup.IDPRUP, hepeup.XWGTUP, hepeup.SCALUP,
              hepeup.AQEDUP, hepeup.AQCDUP);
 
   const std::vector<float> &scales = event->scales();
   
   bool doRecalculate = (mRecalculate > 0.);
   
   unsigned int iscale = 0;
   for(int i = 0; i < hepeup.NUP; i++) {
     //retrieve scale corresponding to each particle
     double scalein = -1.;
     
     //handle clustering scales if present,
     //applies to outgoing partons only
     if (scales.size()>0 && hepeup.ISTUP[i]==1) {
       if (iscale>=scales.size()) {
         edm::LogError("InvalidLHEInput") << "Pythia8 requires"
                                     << "cluster scales for all outgoing partons or for none" 
                                     << std::endl;
       }
       scalein = scales[iscale];
       ++iscale;
     }
     
     double energy = hepeup.PUP[i][3];
     double mass = hepeup.PUP[i][4];
     
     // Optionally recalculate mass from four-momentum.
     if (doRecalculate && mass > mRecalculate) {
       mass = sqrtpos( energy*energy - hepeup.PUP[i][0]*hepeup.PUP[i][0] - hepeup.PUP[i][1]*hepeup.PUP[i][1] - hepeup.PUP[i][2]*hepeup.PUP[i][2]);
     }
     // If not, recalculate energy from three-momentum and mass.
     else {
       energy = sqrt( hepeup.PUP[i][0]*hepeup.PUP[i][0] + hepeup.PUP[i][1]*hepeup.PUP[i][1] + hepeup.PUP[i][2]*hepeup.PUP[i][2] + mass*mass);
     }
     
     addParticle(hepeup.IDUP[i], hepeup.ISTUP[i],
                 hepeup.MOTHUP[i].first, hepeup.MOTHUP[i].second,
                 hepeup.ICOLUP[i].first, hepeup.ICOLUP[i].second,
                 hepeup.PUP[i][0], hepeup.PUP[i][1],
                 hepeup.PUP[i][2], energy,
                 mass, hepeup.VTIMUP[i],
                 hepeup.SPINUP[i],scalein);
   }
   
   infoPtr->eventAttributes->clear();
   
   //fill parton multiplicities if available
   int npLO = event->npLO();
   int npNLO = event->npNLO();
 
   //default value of -99 indicates tags were not present in the original LHE file
   //don't pass to pythia in this case to emulate pythia internal lhe reader behaviour
   if (npLO!=-99) {
     char buffer [100];
     snprintf( buffer, 100, "%i",npLO);    
     (*infoPtr->eventAttributes)["npLO"] = buffer;
   }
   if (npNLO!=-99) {
     char buffer [100];
     snprintf( buffer, 100, "%i",npNLO);    
     (*infoPtr->eventAttributes)["npNLO"] = buffer;
   }
   
   const lhef::LHEEvent::PDF *pdf = event->getPDF();
   if (pdf) {
     this->setPdf(pdf->id.first, pdf->id.second,
                  pdf->x.first, pdf->x.second,
                  pdf->scalePDF,
                  pdf->xPDF.first, pdf->xPDF.second, true);
   }
   else {
     this->setPdf(hepeup.IDUP[0], hepeup.IDUP[1],
                  hepeup.PUP[0][3] / runInfo->getHEPRUP()->EBMUP.first,
                  hepeup.PUP[1][3] / runInfo->getHEPRUP()->EBMUP.second,
                  0., 0., 0., false);
   }
 
   //hadronisation->onBeforeHadronisation().emit();
 
   //event.reset();
 
   event->attempted();
 
   return true;
 }

bool LHAupLesHouches::setInit ( )

private

Definition at line 16 of file LHAupLesHouches.cc.

References lhef::HEPRUP::EBMUP, i, lhef::HEPRUP::IDBMUP, lhef::HEPRUP::IDWTUP, getDQMSummary::iter, lhef::HEPRUP::LPRUP, lhef::HEPRUP::NPRUP, lhef::HEPRUP::PDFGUP, lhef::HEPRUP::PDFSUP, AlCaHLTBitMon_QueryRunRegistry::string, lhef::HEPRUP::XERRUP, lhef::HEPRUP::XMAXUP, and lhef::HEPRUP::XSECUP.

 {
   if (!runInfo) return false;
   const lhef::HEPRUP &heprup = *runInfo->getHEPRUP();
 
   setBeamA(heprup.IDBMUP.first, heprup.EBMUP.first,
            heprup.PDFGUP.first, heprup.PDFSUP.first);
   setBeamB(heprup.IDBMUP.second, heprup.EBMUP.second,
            heprup.PDFGUP.second, heprup.PDFSUP.second);
   setStrategy(heprup.IDWTUP);
 
   for(int i = 0; i < heprup.NPRUP; i++)
     addProcess(heprup.LPRUP[i], heprup.XSECUP[i],
            heprup.XERRUP[i], heprup.XMAXUP[i]);
 
   //hadronisation->onInit().emit();
 
   //runInfo.reset();
     
   //fill SLHA header information if available
   std::vector<std::string> slha = runInfo->findHeader("slha");
   if (!slha.empty()) {
     std::string slhaheader;
     for(std::vector<std::string>::const_iterator iter = slha.begin(); iter != slha.end(); ++iter) {
       slhaheader.append(*iter);
     }
     infoPtr->setHeader("slha",slhaheader);
   }  
   
   //work around missing initialization inside pythia8
   infoPtr->eventAttributes = new std::map<std::string, std::string >;
   
   
   return true;
 }

Member Data Documentation

lhef::LHEEvent* LHAupLesHouches::event

private

Definition at line 42 of file LHAupLesHouches.h.

Referenced by Types.EventID::cppID(), core.AutoHandle.AutoHandle::Load(), loadEvent(), looper.Looper::process(), and core.AutoHandle.AutoHandle::product().

lhef::LHERunInfo* LHAupLesHouches::runInfo

private

Definition at line 40 of file LHAupLesHouches.h.

Referenced by loadRunInfo().

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation