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Timelike Transition Form Factor for CP-odd Higgs Boson Production
by Ken Sasaki, Tsuneo Uematsu
Submission summary
| Authors (as registered SciPost users): | Tsuneo Uematsu |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2110.00286v1 (pdf) |
| Date accepted: | Feb. 28, 2022 |
| Date submitted: | Oct. 4, 2021, 3:15 a.m. |
| Submitted by: | Tsuneo Uematsu |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Phenomenological |
Abstract
We investigate the production of CP-odd Higgs boson $A^0$ associated with a real $\gamma$ in $e^+e^-$ collisions. Because of the properties of $A^0$ coupling to the other fields, the main contribution comes from the top-quark triangle loop diagrams. We obtain the timelike transition form factor which describes the production amplitude of $A^0$ in the $e^+e^-$ collisions. This timelike transition form factor is related to the spacelike transition form factor relevant for the $A^0$ production in $e^-\gamma$ collisions. It turns out that the possible extra contributions from chargino-sneutrino and neutralino-selectron box diagrams do not give sizable effects.
Published as SciPost Phys. Proc. 7, 044 (2022)
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