DZero Doesn't see the same excess as CDF!

So the physics world is all a buzz with the reported excess in the W+2 Jet channel reported by CDF.

The graph here shows the most recent result released by CDF in the W+ 2 Jet channel for 7.3 fb-1 and shows a clear (and growing) excess in the invariant mass range around 150 GeV. The community has been buzzing with speculation and ideas as to what this phenomenon could be. From mis-modeling to Technicolor (a new model of physics) the result isn't really clear. But something seems to be really there.

The really exciting thing is that CDF's sister experiment at the Tevatron, DZero, has publicly released their findings in the same channel today and they don't seem to see anything. (See the public release by Fermilab here).

So what does it all mean? Well clearly something is happening here. The CDF result has been checked and double checked from within the collaboration (that is really the only way such a result could ever see the light of day) and now you have an independent check by another experiment on the same data and they don't see anything! The fury of discussion as to whether DZero and CDF are doing identical things will launch as well as much debate as to what it means and how to proceed.

To me this is where physics is really interesting! Methods of analysis and meaning and understanding will be hotly debated. DZero will be giving a seminar talk today at 4pm and is webcasted here.

For sure what is to come will be what makes science great. Checks, cross-checks, argument, and ultimately (and probably after many sleepless nights and hurt ego's) agreement to what causes such deviations.

Get Excited!