J/ production is an example of the kind of physics a muon detector
could address. In this section the detectability of the reaction
is studied. The primary charmed particles
are generated with a flat rapidity in the range
.
The transverse momentum distribution used is given by the expression:
where A=1.4 and
is given in
GeV. This value for the parameter A has been deduced by looking at
production at SPPS and ISR energies
(
=63 and 540 GeV respectively).
Varying A in the range 1-2 changes the results presented below
by a few per cent.
Then
particles are decayed isotropically into two muons.
These muon pairs tend to be back-to-back in contrast with
decay background. This is shown in Figure 3 where
the opening angle between the two muons in the plane perpendicular
to the beam is depicted for background and signal. Only
muons with GeV are considered.
Therefore applying a cut in the opening angle a
substantial rejection of the background can be achieved. The number of
expected dimuon events from background and per thousand
central AuAu events are shown in table 3. The number of
in the muon channel per central AuAu event was found in
[2]. As can be seen, the background rate after applying
the momentum and opening angle cuts is relatively low,
of the order of a percent. However the expected signal is still
more than a order of magnitude lower.