Lubos Motl made a list of recent claims of BSM (beyond standard model) physics, and asked whether there are any papers out there which can explain at least two of these observations. I find especially interesting "A unified, flavor symmetric explanation for the t-tbar asymmetry and Wjj excess at CDF" by Nelson et al. There's no leptophobic Z' boson here, instead there's a flavor symmetry and new scalar fields. It's a little messy, but the first implementation of a new idea often is, so it would be of interest to understand the essence of how the model does its thing.
Elsewhere in Lubos's list, there's a bump at 325 GeV. What's quite interesting is that a bump around 325 GeV has been observed under two separate circumstances. A discussion with Tommaso Dorigo highlights the obvious reason why they "shouldn't" be the same particle. Still, physics has many possibilities, so maybe there's a way around this. If I was making a model with four generations, I'd start here.
Finally, although the initial claim of a 115 GeV Higgs at the LHC was not endorsed by the rest of the collaboration, it's an attractive value for theoretical reasons. So, if I was just trying to make a field theory model of what we see in our colliders, I guess I'd be looking for a four-generation model a la Lebed and Mayes, which generalized Nelson et al's mechanism, and which had a 115 GeV Higgs. In fact, I have no idea if all those proposals can coexist. But that's part of how theoretical progress occurs - you see if you can fit several things at once into your model, and either you can, or you can't, or you first have to change something...
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