pylhe.LHEEventInfo

class pylhe.LHEEventInfo(nparticles: int, pid: int, weight: float, scale: float, aqed: float, aqcd: float)[source]

Bases: object

Store the event information in the LHE format.

__init__(nparticles: int, pid: int, weight: float, scale: float, aqed: float, aqcd: float) → None

Methods

`__init__`(nparticles, pid, weight, scale, ...)
`fromstring`(string)	Create an LHEEventInfo instance from a string in LHE format.
`tolhe`(lheformat)	Return the event info as a string in LHE XML format.

Attributes

`nparticles`	Number of particles in the event
`pid`	Process ID for the event
`weight`	Event weight
`scale`	Energy scale of the event
`aqed`	QED coupling constant alpha_QED
`aqcd`	QCD coupling constant alpha_QCD

aqcd: float: QCD coupling constant alpha_QCD

aqed: float: QED coupling constant alpha_QED

classmethod fromstring(string: str) → LHEEventInfo[source]: Create an LHEEventInfo instance from a string in LHE format.

nparticles: int: Number of particles in the event

pid: int: Process ID for the event

scale: float: Energy scale of the event

tolhe(lheformat: LHEXMLFormat = LHEXMLFormat(indent=' ', compress=False, weights=<LHEWeightFormat.RWGT: 'rwgt'>, eventinfo='{nparticles:3d} {pid:6d} {weight: 15.10e} {scale: 15.10e} {aqed: 15.10e} {aqcd: 15.10e}', particle='{id:5d} {status:3d} {mother1:3d} {mother2:3d} {color1:3d} {color2:3d} {px: 15.8e} {py: 15.8e} {pz: 15.8e} {e: 15.8e} {m: 15.8e} {lifetime: 10.4e} {spin: 10.4e}', initinfo=' {beamA: 6d} {beamB: 6d} {energyA: 14.7e} {energyB: 14.7e} {PDFgroupA: 5d} {PDFgroupB: 5d} {PDFsetA: 5d} {PDFsetB: 5d} {weightingStrategy: 5d} {numProcesses: 5d}', procinfo='{xSection: 14.7e} {error: 14.7e} {unitWeight: 14.7e} {procId: 5d}')) → str[source]

Return the event info as a string in LHE XML format.

Returns:: str: The event info as a string in LHE XML format.

weight: float: Event weight