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I am trying to learn more about NMSSM, and in the Lecture Notes by Jack Gunion, held at SUSY08 conference in Seoul 2008 ( http://susy08.kias.re.kr/slide/pl/Gunion.pdf ) there is in slide #20 arguments for a Z_3 symmetry of the NMSSM superpotential.

My questions are what/which is this Z_3 symmetry? As far as my knowledge, there are several groups called Z.

Also I was wondering then HOW one can see that this superpotential has Z_3 symmetry.

Thank you

/Glenn

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# Z_3 symmetry in NMSSM superpotential

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