LHC-B

At high energy hadron colliders the produced B and $\bar B$ mesons are correlated in the forward direction (ie close to the proton beam direction). Figure 9 shows the angular distribution of the $B \bar{B}$mesons in the laboratory frame at LHC. This is due to the relatively low mass production of b quark pairs at collider energies. This production mechanism lends itself to dedicated experiments that are of a forward, planar design, reminiscent of those used in fixed target experiments.

Such an experiment, LHC-B, has been proposed for the LHC [15]. Its layout is shown in figure 10. LHC-B is a forward single-dipole spectrometer It consists of a silicon microvertex detector, a tracking system, aerogel and gas RICH detectors, electromagnetic and hadronic calorimeter and a muon filter. LHC-B will be allowed to run with a defocussed beam in their interaction area which would give a nominal running luminosity ${\cal L} = 1.5 \times 10^{32}{\rm\ cm^{-2}s^{-1}.}$

  

Figure 10: Top view of the LHC-B detector