The $γγ\to A^0 A^0$ process at a $γγ$ Collider

G. J. Gounaris; P. I. Porfyriadis

doi:10.1007/s100520000520

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The $γγ\to A^0 A^0$ process at a $γγ$ Collider

G. J. Gounaris·P. I. Porfyriadis

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Abstract

The helicity amplitudes for the process $γγ\to A^0 A^0$ are studied to 1-loop order in the minimal SUSY (MSSM) model, where $A^0$ is the CP-odd Higgs particle. Simple exact analytic formulae are obtained, in terms of the $C_0$ and $D_0$ Passarino-Veltman functions; in spite of the fact that the loop-diagrams often involve different particles running along their sides. For a usual mSUGRA set of parameters, $σ(γγ\to A^0 A^0) \sim (0.1-0.2)\rm fb $ is expected. If SUSY is realized in Nature, these expressions should be useful for understanding the Higgs sector.

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G. J. Gounaris, P. I. Porfyriadis. 2000-09-21. The $γγ\to A^0 A^0$ process at a $γγ$ Collider. https://doi.org/10.1007/s100520000520

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