Standard model appears to be flawed

[popeyespappy]

Technically speaking Phil you lost me at I. However there does seem to be some independent verification going on along the lines of your concerns.

We have presented NLO predictions for cross sections and dijet invariant mass distributions for one lepton, missing ET and two jets at the Tevatron. We have used a variety of cuts, including those used by the CDF collaboration who have recently reported an excess in this distribution around 150 GeV. By calculating the distribution of the invariant mass of the dijets at NLO we have ruled out large NLO K-factors as a possible source of the excess within the context of the SM. At NLO the cross sections have only a moderate dependence on the renormalisation and factorisation scales of QCD, indicating that our results could be used to constrain the overall
normalisation of these backgrounds.

The SM predicts a parton-level edge in the top background around 150 GeV, an edge that is softened into a broader peak by the parton shower. Detector effects, that we have not considered here, will certainly modify this feature further. In order to gain better control over the shape of this background we would advocate the use of the more inclusive cuts for which the top background is much larger and thus more easily constrained. It becomes even more significant for cuts demanding harder jets. For instance a pj T > 40 GeV cut yields a top cross section in the region of the broad peak only a factor of 2.5 lower than the W+ jets contribution. Further information on this background could be gleaned by investigating the dijet mass distribution for the case of b-tagged (or anti-tagged) jets. In particular, the dominant source of two anti-b-tagged jets is from the hadronic decay of the W. The invariant mass of two anti-b-tagged jets should therefore peak sharply around mW, with no significant peak in the 100–150 GeV region.

NLO predictions for a lepton, missing transverse momentum and dijets at the Tevatron

According to the blog post the CDF crew appears to be waiting for confirmation of their observations either from D0 or one of the LHC instruments. Meanwhile the more data they add to their analysis the bigger the bump gets.