What is the kinematical range in the gluon momentum fraction effectively covered by this experiment? That is, what is the range over which the result will come out averaged?
It would be convenient a more detailed comparison with RHIC concerning the above question, accuracies, and possible schedule.
2. Charmed Hadrons
Could we have more precisions on masses, semileptonic decays and lifetimes, as compared with other experiments, such as Selex, B-factories, etc.?
For instance, up to what point you would say that an improvement of 10 in statistics would translate into qualitatively new knowledge?
Could you please point out more precisely which discoveries are foreseeable, which will not be done before and/or better elsewhere?
3. Diffractive production.
If there is a partner to the (1.8) (fig. 4.6) at a mass of about 1.9 to 2 GeV, decaying into , will you have sensitivity to this?
Up to what mass will you be able to separate Primakoff excitations from diffractive production? In particular, is it possible to extract an electromagnetic excitation strength for the (1.8)? what essential improvements are anticipated by Compass relative to the current Protvino set up for this particular state (i.e., will you improve the information on the question of whether there is a rho omega decay, and if so whether this is from the same (1.8) or from a different state with 0 quantum numbers)?