ShowMCParticles Class Reference

Inheritance diagram for ShowMCParticles:

Collaboration diagram for ShowMCParticles:

Public Member Functions
def	event (self)

Detailed Description

Simple module to collect some information about MCParticles

Definition at line 40 of file ParticleGunPlots.py.

Member Function Documentation

event()

def event

(

self

)

Fill the histograms with the values of the MCParticle collection

Definition at line 43 of file ParticleGunPlots.py.

    def event(self):
        """Fill the histograms with the values of the MCParticle collection"""
        mcParticles = Belle2.PyStoreArray('MCParticles')
        h_nTracks.Fill(mcParticles.getEntries())
        for mc in mcParticles:
            p = mc.getMomentum()
            h_momentum.Fill(p.Mag())
            h_pt.Fill(p.Perp())
            h_phi.Fill(p.Phi() / math.pi * 180)
            h_theta.Fill(p.Theta() / math.pi * 180)
            h_costheta.Fill(math.cos(p.Theta()))
            h_pdg.Fill(mc.getPDG())
            h_xyvertex.Fill(mc.getProductionVertex().X() * 1e4,
                            mc.getProductionVertex().Y() * 1e4)
            h_zxvertex.Fill(mc.getProductionVertex().Z() * 1e4,
                            mc.getProductionVertex().X() * 1e4)
            h_zyvertex.Fill(mc.getProductionVertex().Z() * 1e4,
                            mc.getProductionVertex().Y() * 1e4)
 
 
# Create Modules

---

The documentation for this class was generated from the following file:

• generators/examples/ParticleGunPlots.py