In the laboratory Fermilab on fire

2009/05/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria

• Fisika

The United States Fermilab National Accelerator Laboratory is working and bearing fruit. For a week they have made two great discoveries.

First, they pointed out that some of the experiments carried out indicated that quark summits, or top quarks, the heaviest quark known, can be created individually. So far they have only seen them create by pairs. The standard model ordering particle physics predicts that they are also produced individually and now seems to have been able to prove it in Fermilab.

A week later, the mass of the W boson was given with the highest precision achieved. With an accuracy of 99.95% it was said that the W boson has a ^mass of 80,401 +/- 0,044 GeV/c2. The W boson is a particle that transmits one of the four basic forces of nature, the weak nuclear force, and allows, among other things, radioactive decay.

These two discoveries have allowed Fermilabe scientists to determine more potential mass from the unknown Higgs boson. In fact, the standard model indicates that there is a complex relationship between the quark peak and the mass of the W boson and the Higgs boson. Thus, knowing better the other two, scientists will have the opportunity to know the properties of the Higgs boson and refine more the search that is spreading. And they say that the Higgs boson, if it exists, is lighter than they used to. Higgs boson was considered to contain up to 185 GeV. Now, Fermilabe scientists have stated that with the greatest mass the boson can have it can hardly have energy between 160 and 170 GeV.