+ jet events
A calculation was done for the process
with parton densities from CTEQ4L [14] for all light quarks.
To select + jet events, the following cuts are required,
and
GeV/c,
and
GeV/c,
GeV,
> 3GeV,
and
5GeV.
The cross-section for 2-
BH is estimated to be 0.0743
0.0003pb and
0.10610.0003pb for the calculation in the electroweak theory (EW).
The difference of 0.03pb
comes from the phase space region with low invariant mass and
small opening angle of the di-muon system
where CO diagrams are dominant
(see Fig.5.).
The cross-section increases as the di-muon mass decreases
down to the kinematical limit of twice the muon mass.
