Russian scientists involved in the collaboration of LHCB on a large hadron collider, announced the opening of a new particle – exotic Tetrakskaya TCC +, which is a new form of matter. This is reported in a press release on the CERN website.
Tetrakvark TCC + is the only known science of a particle consisting of four quarks, two of which are placed (c-quark), but there are no placed antiquarks. Charm is called an aroma – a quantum number, characterizing the type of quark (six different “varieties” of quarks). At the same time, the lifetime of a new Tetrakskaya is about 10-500 times greater than that of particles with a similar mass, which makes Tetrakkak TCC + a long-lived record holder.
was originally believed that the hadrons (composite particles) may consist of either of three quarks, as protons and neutrons, or from quark and antiquark. However, more than half a century ago, physics suggested that there are hadron, consisting of four (tetrakskaya) or five quarks (pentakvarka). Already experimentally proved the existence of four pentakvarkov and 20 tetrakvarkov. Tetrakvark TCC + consists of two heavy fascinated quarks, which is indicated as the SS, and two antiques with the aromas U (upper) and D (lower). Previously, famous tetrakvarka possessed hidden charm, that is, there are fascinated quark in their composition and enchanted antiquarian.
According to scientists, it is the presence of two heavy quarks that makes a particle relatively stable and long-lived. If instead of C-quarks, there were b-quarks in it (adorable quarks), the lifetime of the particle will become even more and draw up 10 per minus of the 13th degree of a second.