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arXiv · 2208.11569

Kinematic and vertex fitting package for the CMD-3 experiment

S. S. Gribanov·A. S. Popov
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Abstract

In this article, we discuss a new software package of kinematic and vertex fitting for the CMD-3 experiment at the VEPP-2000 electron-positron collider. The authors describe in detail the fitting algorithm, parametrization of four-momenta and trajectories of various particles and present the results of testing the fitting package using events of Monte Carlo simulation of various $e^+e^-$ annihilation processes. The authors also provide several examples of the fitting package validation using Gaussian simulation. Although the package discussed in this article is intended for the CMD-3 experiment, it can also be used in other experiments. The authors consider the described package as their first step towards a more universal and rigrous kinematic and vertex fitting package that can be used in future $e^+e^-$ experiments, such as the Super Charm-Tau factory.

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S. S. Gribanov, A. S. Popov. 2022-08-24. Kinematic and vertex fitting package for the CMD-3 experiment. https://doi.org/10.1088/1748-0221/18/05/p05030

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