Study of $HZZ$ anomalous couplings by angular differential cross sections
High Energy Physics - Phenomenology
2022-11-16 v2
Abstract
Being one of the golden channels for precise measurement of Higgs properties, the process provides an opportunity to detect the anomalous couplings in searching of new physics beyond the Standard Model. In this paper, we adopt the method of spinor helicity amplitudes to calculate the amplitudes of process at the LHC in the frame of the effective dimension-6 operators. Signal processes of CP-even and CP-odd anomalous couplings in Higgs on/off-shell region and their interference are simulated by using the package MCFM. The most sensitive angle to extract the CP violated coupling coefficients, which is defined as the angle between two decay planes in Higgs rest frame, is found for experimental measurements.
Keywords
Cite
@article{arxiv.2211.07478,
title = {Study of $HZZ$ anomalous couplings by angular differential cross sections},
author = {Yi-Song Lu and You-Kai Wang and Xiang-Yuan You},
journal= {arXiv preprint arXiv:2211.07478},
year = {2022}
}