Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-11-03
Phys.Lett.B671:87-90,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
Phys.Lett.B Published version, 9 pages, 1 figure
Scientific paper
10.1016/j.physletb.2008.12.003
We analyze the conditions under which some supersymmetric generalizations of a class of models descending from string theory allow an axion in the physical spectrum, due to the presence of anomalous abelian gauge interactions. The gauge structure of these constructions involve the Stueckelberg supermultiplet and a supersymmetric version of the Wess-Zumino term for anomaly cancellation. While these conditions are not satisfied by the MSSM superpotential, we show that an axion-like particle appears in the spectrum if extra Standard Model singlets are present. We show that the minimal requirements are met by simple superpotentials in which the singlet superfield is charged under the anomalous U(1). The dark matter sector of these models include an axion and several neutralinos with an axino component.
Coriano' Claudio
Guzzi Marco
Irges Nikos
Mariano Antonio
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