In the LHC, reported the discovery of two new baryons

LHCb collaboration reported the discovery in the course of the experiments at the Large Hadron Collider (LHC), two new baryons. Their findings the authors published in the journal Physical Review Letters, and briefly with them can be found at CERN.

The existence of the particle and Xi_b'- Xi_b * -, discovered by scientists, it was predicted by the quark model of elementary particle physics. According to this theory, all particles involved in strong (nuclear) interaction - hadrons are composed of quarks.
Everything in nature, there are six types of quarks. In a free state (as discrete particles) are not observed. Quarks have fractional electric charges. But they consist of hadrons - mesons (particles with two quarks) and baryons (particles with three quarks) generally have a charge of -1 or +1.

New particles are composed of three quarks (lovely, strange and bottom) and therefore are baryons. Due to the fact that the third-generation quark (adorable) heavy new particles at six times the mass of the proton.

The mass of the new particles also depends on their spins. In Xi_b'- back two light quarks are directed against each other, whereas in Xi_b * - they are parallel, making the last bit a little harder.

Xi_b'- and Xi_b * - belong to a large group of so-called resonances. Their existence has been known since the 1960s; since that time have been discovered dozens of such objects. Their lifetime is about 10-22-10-24 seconds.

As they note, discover new particles have turned out quite easily, because the mass of their decay products is almost equal to the mass of the precursor particles. Properties of the particles are in perfect agreement with the Standard Model of particle physics (it quark sector).

The LHC is located at CERN - the European Organization for Nuclear Research. In 2012, its scientists reported the discovery of the Higgs boson. In the spring of 2015 after the planned reconstruction plan to restart the collider. The main goal of the new experiments - the study of the properties of the Higgs boson, as well as verification of modern theories of dark matter, extra spatial dimensions and super symmetry.