Negative S from AdS

Veronica Sanz, photo by Johannes Hirn

Veronica Sanz, photo by Johannes Hirn

Hirn and Sanz have examined models of electroweak symmetry breaking in anti-de Sitter space via boundary conditions. They include additional bulk breaking of electroweak symmetry and find that they can change the spectrum of vector and axial vector resonances so as to make the S parameter negative and thus compatible with precision electroweak tests.


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