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arXiv · 2206.11560

Distinguishing nonstandard scalar and fermionic charged particles at future $e^+e^-$ collider

Anjan Kumar Barik·Rafiqul Rahaman·Santosh Kumar Rai
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Abstract

We investigate the possibility to identify the nature of spin of exotic charged particles at the future $e^+e^-$ collider in $l^\pm+2j+MET$ final state choosing IDM and MSSM as examples for the new physics models with scalar and fermionic exotic charged particles, respectively. We choose four benchmarks for the mass parameters for a significant deviation from the SM $W^+W^-$ background. We find that the $\cos\theta$ of $W$ boson constructed from $jj$ pair and lepton have the potential to identify the MSSM signal compared to the IDM signal in longitudinally polarized initial beams. A more robust comparison is seen in the shape of the azimuthal angle of the $W$ boson and charged lepton, which can identify the IDM signal further if the beams are transversely polarized.

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Anjan Kumar Barik, Rafiqul Rahaman, Santosh Kumar Rai. 2022-06-23. Distinguishing nonstandard scalar and fermionic charged particles at future $e^+e^-$ collider. https://doi.org/10.1103/physrevd.107.035002

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