Acts::HoughVertexFinder2 Class Reference

Implements the vertex finder based on the space points using Hough transform For more information, see arXiv:2410.14494 0. More...

#include <Acts/Vertexing/HoughVertexFinder2.hpp>

Classes
struct	Config
	Configuration struct. More...

Public Member Functions
	HoughVertexFinder2 (Config cfg, std::unique_ptr< const Logger > lgr=getDefaultLogger("HoughVertexFinder2", Logging::INFO))
	Constructor.
const Config &	config () const
	Const access to the config.
Acts::Result< Acts::Vector3 >	find (const SpacePointContainer2 &spacePoints) const
	Finds the vertex based on the provided space points.

Detailed Description

Implements the vertex finder based on the space points using Hough transform For more information, see arXiv:2410.14494 0.

Assumes there is only 1 vertex and that it has a high multiplicity

1. Estimates what eta range is really necessary
2. Creates Hough space (z_vtx - cot(theta)) from space points within that eta range
3. Subtracts the coincidentally crossed lines in the Hough space
4. Makes a projection to the Z axis and finds a peak - that is the vertex position
5. Repeats 2-4 if necessary

Constructor & Destructor Documentation

HoughVertexFinder2()

Acts::HoughVertexFinder2::HoughVertexFinder2 ( Config cfg, std::unique_ptr< const Logger > lgr = getDefaultLogger("HoughVertexFinder2", Logging::INFO) )

explicit

Constructor.

Parameters

cfg	Configuration object
lgr	Logging instance

Member Function Documentation

config()

const Config & Acts::HoughVertexFinder2::config

(

)

const

Const access to the config.

Returns

Const reference to the configuration object

find()

Acts::Result< Acts::Vector3 > Acts::HoughVertexFinder2::find

(

const SpacePointContainer2 &

spacePoints

)

const

Finds the vertex based on the provided space points.

Parameters

spacePoints

Vector of the input space points; they do not need to be sorted anyhow

Returns

Position of the vertex