f1(1285)
Particle Data Group → Particle Listings → MESONS (pi, K, D, B, psi, Upsilon, ...) → LIGHT UNFLAVORED MESONS (S = C = B = 0) → f(1)(1285)
Decay Modes
Γ3 = 2π+ 2π− = e−π+π−π+π− = 11 : 211 : -211 : 211 : -211
ROOT
$ rootroot [0] TBrowser *TBrowser = new TBrowser()clasrun_42011.root → CLASEVENT;1 → EVENT → EVENT.Vz
process
process.cc
#include <iostream>#include "TEventReader.h"#define DEBUG 0using namespace std;void process (string file) { TEventReader reader; reader.addFile(file.c_str()); int entries = reader.getEntries(); cout << "Entries: " << entries << endl; for (int processed = 0; processed < entries; processed = processed + 1) { if (DEBUG) { if (!(processed % 100)) { cout << "Processed Entries: " << processed << endl; } reader.printEvent(); } reader.readEntry(processed); } cout << "Processed Entries: " << entries << endl;}#ifndef __CINT__int main (void) { string file; cout << "File: "; cin >> file; process(file);}#endifSConstruct
env = Environment()env.ParseConfig('root-config --cflags --glibs')t = env.Program(target='process', source=['process.cc', 'libEvioRoot.so'])Default(t)$ sconsscons: Reading SConscript files ...scons: done reading SConscript files.scons: Building targets ...g++ -o process.o -c -m64 -pthread -rdynamic -I/usr/local/include/root process.ccg++ -o process -pthread process.o libEvioRoot.so -L/usr/local/lib/root -lGui -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -lMathCore -lThread -lm -ldlscons: done building targets.$ ./processFile: clasrun_c12_all.root[TEventReader::initClones] (INFO) : Initializing EVNT Clones Array[TEventReader::initClones] (INFO) : Initializing HEAD Clones Array[TEventReader::initClones] (INFO) : Initializing EVPB Clones Array[TEventReader::initClones] (INFO) : Initializing EXPB Clones Array[TEventReader::initClones] (INFO) : Initializing TGPB Clones Array[TEventReader::AddFile] (INFO) : First file added. Initializing BranchesError in <TTree::SetBranchStatus>: unknown branch -> TGPBEntries: 302926Processed Entries: 302926