The LHCb collaboration has discovered a new weakly decaying particle: a baryon called the Ξ++cc, which contains two charm quarks and an up quark. The discovery of the new particle, which was observed decaying to the final-state Λ+c K– π+ π+ and is predicted by the Standard Model, was presented at the European Physical Society conference in Venice on 6 July.
|Left: clear Ξ++cc signal on top of the background.|
The "new" particle finds its predicted place in the upper right hand corner of the right diagram.
|In spite of all the bottles emptied, |
a frustrated physisist is still looking for signs of a new physics.
With results of a new physics not coming in accelerator physicists at CERN already plan for a larger circular machine. Its circumference shall be up to four times that of the LHC although experimental physicists demand that any new accelerator should rather be an order of magnitude larger than the LHC. But who shall pay for a 130 TeV machine?
|Skeleton in John Ellis's office|
The famous Richard Feynman once joked when he was asked about the usefulness of theoretical physics: Physics is like sex. Sure, it may give some practical results, but that's not why we do it.