chicX

3 ms·

1. 1.▲
   by chicX 4y ago

   They do. The Tcs0 tetraquarks don't have quark-antiquark pairs however, you see from the article and figures, that the quark content is charm + anti-strange + up + anti-down, these can't annihilate because the quarks have differen
2. 2.▲
   by chicX 4y ago

   The change is the gradual accumulation of statistics. These are relatively rare events. The LHC has been running, high-energy proton-proton collisions have been occurring, and the LHCb detector in this case has been measuring them. The stat
3. 3.▲
   by chicX 4y ago

   These particles are hadrons held together by the strong force. They all contain charm or strange quarks which are relatively heavy, and via the weak interactions, they can decay to hadrons containing light quarks. Because of the large mass