python.truth Namespace Reference

Classes
class	_Truthtmp

Functions
def	do_decay (t, n)
def	dump_one_truth (t, f=sys.stdout)
def	dump_truth (f=sys.stdout, sgkey="SpclMC", maxn=None)

Function Documentation

do_decay()

def python.truth.do_decay	(		t,
			n
	)

Return the barcode number for decay N of truth particle T
as a string.  Return an empty string if there's no such decay.

Definition at line 21 of file truth.py.

def do_decay (t, n):
    """Return the barcode number for decay N of truth particle T
as a string.  Return an empty string if there's no such decay.
"""
    if t.nDecay() <= n:
        return ''
    bc = t.child(n).genParticle().barcode()
    return str(bc)
 

dump_one_truth()

def python.truth.dump_one_truth	(		t,
			f = sys.stdout
	)

Dump truth information for truth particle T to file F.

Definition at line 32 of file truth.py.

def dump_one_truth (t, f=sys.stdout):
    """Dump truth information for truth particle T to file F."""
    d = _Truthtmp()
    d.bc = t.genParticle().barcode()
    d.name = PDG.pdgid_to_name(t.pdgId())
    d.da1 = do_decay(t, 0)
    d.da2 = do_decay(t, 1)
    d.da3 = do_decay(t, 2)
    d.pt = t.pt()/1000
    d.eta = t.eta()
    d.phi = t.phi()
    d.m = t.m()/1000
    d.px = t.px()/1000
    d.py = t.py()/1000
    d.pz = t.pz()/1000
    d.e = t.e()/1000
    print ("%(bc)3d %(name)-4s %(da1)4s %(da2)4s %(da3)4s %(pt)6.1f %(eta)5.2f %(phi)5.2f %(m)5.1f %(px)6.1f %(py)6.1f %(pz)6.1f %(e)6.1f" % d.__dict__, file=f)
    if t.nDecay() > 3:
        print ("  (more than 3 decays)", file=f)
 
 

dump_truth()

def python.truth.dump_truth	(		f = sys.stdout,
			sgkey = "SpclMC",
			maxn = None
	)

Dump out truth information for the current event.
F is the file to which the dump is sent.
SGKEY is the StoreGate key which is used to retrieve the truth information.

The first column in the dump is the particle barcode number.
This is followed by the particle type, and then by the barcode numbers
of any decay daughters (up to 3).  This is followed by the four-momentum
in two versions: first as pt, eta, phi, m and then as px, py, pz, e.

Definition at line 53 of file truth.py.

def dump_truth(f=sys.stdout, sgkey="SpclMC", maxn=None):
    """Dump out truth information for the current event.
F is the file to which the dump is sent.
SGKEY is the StoreGate key which is used to retrieve the truth information.
 
The first column in the dump is the particle barcode number.
This is followed by the particle type, and then by the barcode numbers
of any decay daughters (up to 3).  This is followed by the four-momentum
in two versions: first as pt, eta, phi, m and then as px, py, pz, e.
"""
    parts = [p for p in PyParticleTools.getTruthParticles (sgkey)]
    if maxn is not None:
        parts = parts[:maxn]
    for t in parts:
        dump_one_truth (t, f)
    return