Loading...

No, unfortunately not yet the discovery of the century. Still, the new particle found by CMS in its 2011 dataset is a very important piece of the puzzle of low-energy spectroscopy. Here "low" should be taken with a pinch of salt: the new particle, an excited state of the Ξb series, has a mass only slightly lower than six GeV, and is thus "heavy" if compared to most other hadrons.