This can be done by determining the SPID of the business process running via a SQL snap shot or through SQL using the sp_who and/or sp_who2 commands.
Once the SPID is determined a SQL kill command can be executed to terminate the business process.

MSDN information on SP_WHO:
http://msdn.microsoft.com/en-us/library/ms174313.aspx

MSDN information on KILL command:
http://msdn.microsoft.com/en-us/library/ms173730.aspx