Flavour non-conservation in goldstino interactions

Details Flavour non-conservation in goldstino interactions Flavour non-conservation in goldstino interactions

2000-06-03

arxiv.org/abs/hep-ph/0006036v2

Nucl.Phys. B587 (2000) 3-24

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 LaTeX pages, 2 ps figures, uses epsfig and axodraw; typos corrected, to appear in Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(00)00458-2

We point out that the interactions of goldstinos with matter supermultiplets are a potential source of flavour violation, if fermion and sfermion mass matrices are not aligned and supersymmetry is spontaneously broken at a low scale. We study the impact of those couplings on low-energy processes such as \mu \to e \gamma, \mu \to eee, K \to \mu^+ \mu^-, K-\ov{K} transitions and analogous ones. Moreover, we address the issue of flavour violation in low-energy processes involving two goldstinos and two matter fermions, generalizing earlier results obtained in the flavour-conserving case.

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