Correlation between outstanding hints in experimental particle physics

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?

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user Luboš Motl

Comments

Something I saw recently: arXiv 1104.4087 suggests a standard model compatible explanation for the CDF bump as an artifact of the selection criteria.

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user dmckee

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It's good but doesn't it explain just one of the bumps?

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user Luboš Motl

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Yes, it only addresses the possible $Z'$.

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user dmckee

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The electron dipole measurement motls.blogspot.com/2011/05/… seems like a strong negative hint, if it is as constraining as people say.

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user Mitchell Porter

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Couldn't ~100 GeV technipions and 800 GeV stable purely techincolor/QCD interacting technibaryons "explain" points 1 plus whichever other points?

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user Ron Maimon

Answer 1

See arXiv:1104.3145, 1103.6035 and 1104.4127

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user Julius

Comments

Funny two-step methods to link the observations, thanks, @Julius! ;-) A combination of a Z' interaction with dark matter is somewhat creative.

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user Luboš Motl

Answer 2

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.

This post imported from StackExchange Physics at 2014-06-07 05:13 (UCT), posted by SE-user arivero