TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.7.044
TI  - Timelike transition form factor for CP-odd Higgs boson production
PY  - 2022/06/22
UR  - https://scipost.org/SciPostPhysProc.7.044
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 7
SP  - 044
A1  - Sasaki, Ken
AU  - Uematsu, Tsuneo
AB  - 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.
ER  -

@Article{10.21468/SciPostPhysProc.7.044,
	title={{Timelike transition form factor for CP-odd Higgs boson production}},
	author={Ken Sasaki and Tsuneo Uematsu},
	journal={SciPost Phys. Proc.},
	pages={044},
	year={2022},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.7.044},
	url={https://scipost.org/10.21468/SciPostPhysProc.7.044},
}