User:Hershen/sandbox

The Bc is a b ound state of the b andcquarks. It is the o nl y known meson with two heavy quarks of di�erent �avors. This makes it a unique particl e to test heavy quark related mo dels. An accurate measurement of theBc lifetime implies investigation of quark con�nement by the strong interactions. It could help distingui sh various parameter dep endencies such as the optimal heavy quark masses which will help reduce theoretical uncertainties in calculations [2 0, 19]. TheBc was discovered by the Coll ider Detector at Fermilab (CDF) in 1998 [4].