Upper bounds on rare K and B decays from minimal flavour violation Original Research Article

We study the branching ratios of rare K and B decays in models with minimal flavour violation, using the presently available information from the universal unitarity triangle analysis and from the measurements of image, image and image. We find the following upper bounds: image, image, image, image, image, image, image at 95% probability. We analyze in detail various possible scenarios with positive or negative interference of Standard Model and new physics contributions, and show how an improvement of experimental data corresponding to the projected 2010 B factory integrated luminosities will allow to disentangle and test these different possibilities. Finally, anticipating that subsequently the leading role in constraining this kind of new physics will be taken over by the rare decays image, image and image, that are dominated by the image-penguin function C, we also present plots for several branching ratios as functions of C. We point out an interesting triple correlation between image, image and image present in MFV models.