Default event classifier for ATLAS Z-path masterclass. Classifies events by electron/muon/photon counts.

Parameters :

Name	Type	Optional
tagCounts	Record	No

Returns : string

Extract a 4-momentum vector from a calorimeter cluster. Clusters have energy, eta, phi (treated as massless).

Parameters :

Name	Type	Optional
userData	any	No

Returns : FourMomentum | null

Extract a 4-momentum vector from track userData. Tracks have pT, eta/phi (or dparams), and we assign mass from the tag definition.

Parameters :

Name	Type	Optional	Description
userData	any	No	Track user data containing kinematic properties.
mass	number	No	Particle rest mass in MeV/c².

Returns : FourMomentum | null

Compute the invariant mass of a set of particles in MeV. M² = (ΣE)² - (Σpx)² - (Σpy)² - (Σpz)²

Parameters :

Name	Optional
momenta	No

Returns : number

Pre-scan all events and build a summary index. This is the main entry point for the event browser.

Parameters :

Name	Type	Optional
eventsData	PhoenixEventsData	No

Returns : EventSummary[]

Compute missing transverse energy magnitude from MET collections. Returns NaN if no MET data is present.

Parameters :

Name	Type	Optional
eventData	PhoenixEventData	No

Returns : number

Count all physics objects in a single event. Each collection type (Tracks, Jets, etc.) can have multiple named sub-collections.

Parameters :

Name	Type	Optional
eventData	PhoenixEventData	No

Returns : literal type

Get all unique collection type names across all events. Reconstructed physics objects are listed first, detector-level types last.

Parameters :

Name	Optional
summaries	No

Returns : string[]

Build a summary for a single event.

Parameters :

Name	Type	Optional
eventKey	string	No
eventData	PhoenixEventData	No

Returns : EventSummary

Returns default configs for all built-in Phoenix object types.

Returns : ObjectTypeConfig[]

Change colour of object.

Parameters :

Name	Type	Optional	Description
object	Object3D	No	Object to be update
color	any	No	Color to set for the object.