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: object

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, ...)
fromstring(string)	Create an LHEParticle instance from a string in LHE format.
mothers()	Return a list of the particle's mothers.
tolhe()	Return the particle as a string in LHE format.

Attributes

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

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.

Deprecated since version 2.0.0: Access by particle.event 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.

id: int

PDG ID of the particle

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.

Deprecated since version 2.0.0: Accessing mothers via LHEParticle.mothers() is deprecated and will be removed in a future version. Use LHEEvent.mothers(LHEParticle) method, LHEParticle.mother1 and LHEParticle.mother2 instead.

px: float

Momentum x coordinate of the particle

py: float

Momentum y coordinate of the particle

pz: float

Momentum z coordinate of the particle

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.