One top quark weighs about as much as oneatom oftungsten. Since top quarks are somassive, scientists have been able to make predictions about themass of theHiggs Boson, the only type ofboson with anintrinsic spin of 0 (scalar boson). Unfortunately, top quarks are only believed to be able to exist for 5x10–25 seconds.
Frank Fiedler; for the D0; CDF Collaborations (June 2005). "Top Quark Production and Properties at the Tevatron".arXiv:hep-ex/0506005.{{cite arXiv}}: CS1 maint: numeric names: authors list (link)