No abstract available

[en] The muon pair experiment installed at the ISR CERN is briefly described. The main physics program for this experiment aims at finding very high mass resonances in the 15-40 GeV/c range and studying the hadron distributions associated with dimuon pair of large mass. (Z.J.)

[en] We report the results of a study of the mechanism of inclusive dimuon production from the reaction p+p→μ⁺μ^-+X at the CERN intersecting storage rings. The present experiment was done at the center-of-mass energies √s = 62 and 44 GeV and in the dimuon pair invariant-mass region m = 3-25 GeV. The dependence on the Feynman variable x has been measured. The average transverse momentum is found to increase with √s and with mass and reaches < p/sub T/>approx. =1.9 GeV, compatible with predictions from quantum-chromodynamic gluon processes

[en] Prompt dimuon production has been measured. Events with mass up to 25 GeV/c² are observed, as well as the J and UPSILON resonances. Cross sections are given for J and UPSILON production. For the continuum, the scaling function F(tau) is measured at very small values of √tau=m/√s covering the range 0.05<√tau<0.20