JBeukema
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- #1
At a recent physics seminar at the Department of Energys Fermi National Accelerator Laboratory, Fermilab physicist Pat Lukens of the CDF experiment announced the observation of a new particle, the Omega-sub-b (Ωb). The particle contains three quarks, two strange quarks and a bottom quark (s-s-b). It is an exotic relative of the much more common proton and has about six times the protons mass.
The observation of this doubly strange particle, predicted by the Standard Model, is significant because it strengthens physicists confidence in their understanding of how quarks form matter. In addition, it conflicts with a 2008 result announced by CDFs sister experiment, DZero.
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Interestingly, the new CDF observation announced here is in direct conflict with the earlier DZero result. The CDF physicists measured the Omega-sub-b mass to be 6054.4 ±6.8(stat.) ±0.9(syst.) MeV/c2, compared to DZeros 6165±10(stat.)±13(syst.) MeV/c2. These two experimental results are statistically inconsistent with each other leaving scientists from both experiments wondering whether they are measuring the same particle. Furthermore, the experiments observed different rates of production of this particle. Perhaps most interesting is that neither experiment sees a hint of evidence for the particle at the others measured value.
I'll be honest here,. It's been a long time since I read up on particle physics, and I don't remember much of it :lokl:....
Press Pass - Press Release - DZero Omega-sub-b