History: Track finding and fitting


The determination of the charged particle momentum in HEP experiments requires a fit of a parametrization to the points measured in a tracking chamber. Various effects can result in deviations to the ideal helix in the uniform field of a solenoid. One effect is multiple scattering, which cuses a random walk of the particle and affects especially low-momwentum tracks and very accurate measurements. The standard method with a weight matrix, which includes the multiple scattering effects, requires a solution time proportional to the third power of N, the number of measured points, and has other disadvantages.


Talks

Tracking methods overview, Hermes Meeting, Zeuthen, March 26, 2003
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Central track finding and reconstruction in the H1 detector, March 31, 2003, DESY Hörsaal
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