One-loop calculations for H→ ffγ in the U(1)_B-L extension for Standard Model

2022/09/28 by Khiem Hong Phan, Phan, Khiem Hong, Anh Thu Nguyen +3
Engineering · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle Accelerators and Free-Electron Lasers #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2209.13755

openalex publication_date 2022/09/28 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28

Abstract

In this paper, we present the calculations for H→ ffγ in the U(1)_B-L extension for Standard Model. Analytic results for one-loop form factors in the decay process are expressed in terms of the scalar one-loop Passarino-Veltman functions in the conventions of \tt LoopTools. Therefore, the decay rates can be evaluated numerically by using this package. In phenomenological results, we show the differential decay rates with respect to invariant mass of fermion pair m_ff, new neutral gauge mass M_Z' and the coupling g' of U(1)_B-L gauge group. We find that the contributions of the U(1)_B-L extension for Standard Model are visible effects and they must be taken into account at future colliders.

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