Non-diagonal flavour observables in B and Collider Physics

Until now the focus within the direct search for supersymmetry has mainly been on flavour diagonal observables. Recently lepton flavour violating signals at future electron positron colliders have been studied. There is now an opportunity to analyse the relations between collider observables and low-energy observables in the hadronic sector. In a first work in this direction, we study flavour violation in the squark decays of the second and third generations taking into account results from B physics, in particular from the rare decay b ->s gamma. Correlations between various squark decay modes can be used to get more precise information on various flavour violating parameters.Comment: 3 pages, latex, Contribution to the International Europhysics Conference on High Energy Physics EPS03, 17-23 July 2003, Aachen, German

Updated NLL Results for B -> (Xs,Xd) gamma in and beyond the SM

We present general model-independent formulae for the branching ratios and the direct tagged CP asymmetries for the inclusive B -> Xd gamma and B -> Xs gamma modes. We also update the corresponding SM predictions.Comment: 3 pages, Contribution to the International Europhysics Conference on High Energy Physics EPS03, 17-23 July 2003, Aachen, Germany, minor change

Comparison of SUSY mass spectrum calculations

We provide a comparison of the results of four SUSY mass spectrum calculations in mSUGRA: Isajet, SuSpect, SoftSusy, and SPheno. In particular, we focus on the high tan(beta) and focus point regions, where the differences in the results are known to be large.Comment: Contribution to SUSY02, 17-23 Jun 2002, DESY Hamburg, 7 page