A New Beautiful Baryon Bagged By CDF
Wednesday, July 20, 2011 - 12:10
in Astronomy & Space
This afternoon (2.30 PM Chicago time) Pat Lukens, an old-timer of the CDF experiment, will give a "wine and cheese" seminar at Fermilab on the new observation of a heavy baryon, of the family of baryons containing bottom quarks, which was still at large.The new particle, called "Xi_b^0", fits a hole in the group representation graph of ground-state baryons with J=1/2. You can see it in the graph on the right. Of all states in the middle level (ones containing one bottom quark) only the Xi_b^0 was still missing. By the way: none of the baryons of the top level have yet been observed.read more