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arXiv · 2306.14089

Jet charge identification in ee-Z-qq process at Z pole operation

Hanhua Cui·Mingrui Zhao·Yuexin Wang·Hao Liang·Manqi Ruan
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Abstract

Accurate jet charge identification is essential for precise electroweak and flavor measurements at the high-energy frontier. We propose a novel method called the Leading Particle Jet Charge method (LPJC) to determine the jet charge based on information about the leading charged particle. Tested on Z - bb and Z - cc samples at a center-of-mass energy of 91.2GeV, the LPJC achieves an effective tagging power of 20%/9% for the c/b jet, respectively. Combined with the Weighted Jet Charge method (WJC), we develop a Heavy Flavor Jet Charge method (HFJC), which achieves an effective tagging power of 39%/20% for c/b jet, respectively. This paper also discusses the dependencies between jet charge identification performance and the fragmentation process of heavy flavor jets, and critical detector performances.

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Hanhua Cui, Mingrui Zhao, Yuexin Wang, Hao Liang, Manqi Ruan. 2023-06-25. Jet charge identification in ee-Z-qq process at Z pole operation. https://arxiv.org/abs/2306.14089

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