Tevatron closed
The biggest American accelerator has stopped working. Economic problems have paralyzed the work and the expectations of many physicists, such as the discovery of the Higgs boson, have been suspended. It is called Tevatron and is located in Batavia, at the Fermilab laboratory headquarters in Illinois. For 26 years it has been used to cause collisions between protons and antiprotons, of which great benefits have been obtained. Through these impacts numerous particles have been found: The inn Bc in 1998, the tau-neutrino in 2000 and the top quark in 2009. The management of Fermilabe has made the decision that the opening of Tevatron is costly and the availability of sufficient economic resources for the physics of higher particles is not guaranteed.
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