+ jet events
The additional requirement that
one of the two muons should be
in 
or 
is applied to the sample in Sec.5.2.
It selects events with single- + jet.
The cross-section for 2-
BH is estimated to be 12.9
0.1fb and
13.10.1fb for the calculation in the electroweak theory.
The distributions of the various kinematical variables are shown in Fig.6.
It can be concluded that
there is no other significant contribution than 2- BH to this kind of events.
