The 115 GeV ATLAS Higgs with enhanced diphoton decays has gone away but there ar
ID: 2286862 • Letter: T
Question
The 115 GeV ATLAS Higgs with enhanced diphoton decays has gone away but there are several other recent tantalizing hints relevant for particle physics, namely
CoGeNT's 7-8 GeV dark matter particle that seems to support DAMA's and other signals
D0's fourth-generation top prime quark that may be there at 325 GeV if a 3-sigma signal is right
CDF's "new" force Z prime boson at 144 GeV which could be there if another 3-sigma bump is real
Tevatron's top-antitop asymmetry above 400 GeV which seems very large
A related CDF top-quark anomaly
and maybe others I missed. My question is simple:
Is there some sensible theoretical basis (e.g. paper) that would simultaneously explain at least two of the observations above if they were real?
Explanation / Answer
My NEW preference is the scalar with charge +4/3 that is being postulated as an explanation for the top-antitop asymmetry.
There are some published papers pursuing this idea, such as http://arxiv.org/abs/1103.2757 or http://arxiv.org/abs/0912.0972 and a couple of mini reviews http://arxiv.org/abs/1108.3341 http://arxiv.org/abs/1107.0841.
As of today I can not tell which papers are the most relevant (see an explicit question in TP.stackexchange). I think that they have a potential to explain some of the other observations because the charge in some GUT models has a contribution from B-L and a contribution from SU(2) chiral groups, so the +4/3 is nor really so exotic.
In any case, take my answer with a bit of salt. As the uppercase acrostic indicates in the first paragraph, I also have some personal motivations to support models along this line, because I tripped into these pesky +4/3 things back in 2005 and I really want to understand how they fit.
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