pylhe.LHEParticle

class pylhe.LHEParticle(id: int, status: int, mother1: int, mother2: int, color1: int, color2: int, px: float, py: float, pz: float, e: float, m: float, lifetime: float, spin: float)

Bases: DictCompatibility

Represents a single particle in the LHE format.

__init__(id: int, status: int, mother1: int, mother2: int, color1: int, color2: int, px: float, py: float, pz: float, e: float, m: float, lifetime: float, spin: float) → None

Methods

__init__(id, status, mother1, mother2, ...)
clear()
fromstring(string)	Create an LHEParticle instance from a string in LHE format.
get(k[,d])
items()
keys()
mothers()	Return a list of the particle's mothers.
pop(k[,d])	If key is not found, d is returned if given, otherwise KeyError is raised.
popitem()	as a 2-tuple; but raise KeyError if D is empty.
setdefault(k[,d])
tolhe()	Return the particle as a string in LHE format.
update([E, ]**F)	If E present and has a .keys() method, does: for k in E.keys(): D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v
values()

Attributes

event	Reference to the parent event, set when the particle is added to an event.
fieldnames	Return the fieldnames.
id	PDG ID of the particle
status	Status code of the particle
mother1	First mother particle ID
mother2	Second mother particle ID
color1	First color line ID
color2	Second color line ID
px	Momentum x coordinate of the particle
py	Momentum y coordinate of the particle
pz	Momentum z coordinate of the particle
e	Energy of the particle
m	Mass of the particle
lifetime	Lifetime of the particle
spin	Spin of the particle

clear() → None.  Remove all items from D.

color1: int

First color line ID

color2: int

Second color line ID

e: float

Energy of the particle

property event: LHEEvent | None

Reference to the parent event, set when the particle is added to an event.

property fieldnames: list[str]

Return the fieldnames.

For backward compatibility with versions < 1.0.0.

Deprecated since version 1.0.0: Listing fieldnames via object.fieldnames is deprecated and will be removed in a future version.

classmethod fromstring(string: str) → LHEParticle

Create an LHEParticle instance from a string in LHE format.

get(k[, d]) → D[k] if k in D, else d.  d defaults to None.

id: int

PDG ID of the particle

items() → a set-like object providing a view on D's items

keys() → a set-like object providing a view on D's keys

lifetime: float

Lifetime of the particle

m: float

Mass of the particle

mother1: int

First mother particle ID

mother2: int

Second mother particle ID

mothers() → list[LHEParticle]

Return a list of the particle’s mothers.

pop(k[, d]) → v, remove specified key and return the corresponding value.

If key is not found, d is returned if given, otherwise KeyError is raised.

popitem() → (k, v), remove and return some (key, value) pair

as a 2-tuple; but raise KeyError if D is empty.

px: float

Momentum x coordinate of the particle

py: float

Momentum y coordinate of the particle

pz: float

Momentum z coordinate of the particle

setdefault(k[, d]) → D.get(k,d), also set D[k]=d if k not in D

spin: float

Spin of the particle

status: int

Status code of the particle

tolhe() → str

Return the particle as a string in LHE format.

Returns:

str: The particle as a string in LHE format.

update([E, ]**F) → None.  Update D from mapping/iterable E and F.

If E present and has a .keys() method, does: for k in E.keys(): D[k] = E[k] If E present and lacks .keys() method, does: for (k, v) in E: D[k] = v In either case, this is followed by: for k, v in F.items(): D[k] = v

values() → an object providing a view on D's values