Reconstruction of angular correlations in the associated top quark and the dark matter mediator production

E. Abasov; L. Dudko; E. Iudin; A. Markina; P. Volkov; G. Vorotnikov; M. Perfilov; A. Zaborenko

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arXiv · 2504.14303

Reconstruction of angular correlations in the associated top quark and the dark matter mediator production

E. Abasov·L. Dudko·E. Iudin·A. Markina·P. Volkov·G. Vorotnikov·M. Perfilov·A. Zaborenko

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Abstract

For the process of single top quark production within the "simplified model" with a scalar dark matter mediator, a new variable based on angular correlations was presented, for the proper reconstruction of which it is necessary to separate the contributions of two undetectable particles: the neutrino and the mediator. In this work, various machine learning approaches for reconstructing the momenta of these particles are analyzed. A comparison is made between the results obtained using a multilayer perceptron and the Normalizing Flows architectures. The neural networks based on Normalizing Flows, presented in this work, demonstrate a high quality of reconstruction of the target variable and can be used for collider data analysis.

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E. Abasov, L. Dudko, E. Iudin, A. Markina, P. Volkov, G. Vorotnikov, M. Perfilov, A. Zaborenko. 2025-04-19. Reconstruction of angular correlations in the associated top quark and the dark matter mediator production. https://arxiv.org/abs/2504.14303

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