Name: hayam yassin Date: 07/29/10-03:07:54 PM Z


Hi all
i can’t know how to calculate the branching ratio (fraction) of any process (decay or cross section) by using feyncalc or feynart or formcalc or looptools?
my operating system is Linux, i have mathematica 6.0 and feyncalc 6 all under linux system.
please, any one help me.
thanks
hayam