FCNC in generalized supersymmetric theories

We study the constraints imposed by flabour changing neutral current phenomena on supersymmetrizations of the standard model where a non-flat Kähler metric and/or new superfields are present. In particular, we consider SU(5), SO(10) and E 6 grand unified extensions. We find that the present experime...

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Bibliographic Details
Published inNuclear physics. B Vol. 322; no. 1; pp. 235 - 254
Main Authors Gabbiani, F., Masiero, A.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 07.08.1989
Elsevier
Subjects
Classical and quantum physics: mechanics and fields
Exact sciences and technology
Physics
Theory of quantized fields
Supersymmetry
Kähler manifold
Superfield
Grand unified theory
Supergravity
Quantum field theory
Symmetry breaking
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Summary:We study the constraints imposed by flabour changing neutral current phenomena on supersymmetrizations of the standard model where a non-flat Kähler metric and/or new superfields are present. In particular, we consider SU(5), SO(10) and E 6 grand unified extensions. We find that the present experimental bounds on μ → e + γ, b → s + γ and the results concerning the K− K and B d − B d mixings severely constrain the choice of spontaneously broken N = 1 supergravity theories whose low energy limit yields the standard model.
ISSN:0550-3213
1873-1562
DOI:10.1016/0550-3213(89)90492-6