Interactions in Intersecting Brane Models

Abstract

We discuss tree level three and four point scattering amplitudes in type II string models with matter fields localized at the intersections of D-brane wrapping cycles. Using conformal field theory techniques we calculate the four fermion amplitudes. These give "contact" interactions that can lead to flavour changing effects. We show how in the field theory limit the amplitudes can be interpreted as the exchange of Kaluza-Klein excitations, string oscillator states and stretched heavy string modes.

17 pages, 10 figures. References added and typos corrected. Version to be published. Minor corrections

References in corpus (2)

• Supersymmetric Intersecting Branes on the Type IIA T^6/Z_4 orientifold
• Intersecting D5-brane models with massive vector-like leptons

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