One-loop contributions for h→ ℓ ℓγ and e^-e⁺→ hγ in U(1)_B-L extension of the standard model

2023/11/06 by Dzung Tri Tran, Tran, Dzung Tri, Thanh Huy Nguyen +3
Mathematics · Physics and Astronomy · #Advanced Algebra and Geometry #Algebraic Geometry and Number Theory #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · pdf · doi:10.48550/arxiv.2311.02998

openalex publication_date 2023/11/06 · openalex created_date 2023/11/08 · openalex updated_date 2026/07/28

Abstract

We present one-loop contributing for h→ ℓ ℓγ with ℓ =ν_{e,μ, τ}, e, μ and e^-e⁺→ hγ in U(1)_B-L extension of the standard models. In phenomenological results, the signal strengths for h→ ℓ ℓγ at Large Hadron Collider and for e^-e⁺→ hγ at future Lepton Colliders are analyzed in physical parameter space for both vector and chiral B-L models. We find that the contributions from neutral gauge boson Z' to the signal strengths are rather small. Consequently, the effects are hard to probe at future colliders. While the impacts of charged Higgs, CP-odd Higgs in the chiral B-L model on the signal strengths are significant and can be measured with the help of the initial polarization beams at future lepton colliders.

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