Production of lepton pairs in free or bound states at relativistic heavy ion colliders

I would like to attract the attention of experimentalists to results of recent papers [1-3]. In nef. [1] the Coulomb correction to the e(+)e(-) pair production related to multiphoton exchange of the produced el with nuclei is considered. The found correction to the total cross section is negative and equals -25% at the RHIC for Au-Au and -14% at the LHC for Pb-Pb collisions. In Ref. [2] it is considered production of the relativistic positroniums (Ps) and it is shown that the RHIC and the LHC will be Ps factories with the productions rate about 10(5) divided by 10(8) relativistic Ps per day. Then results of Ref. [3] for creation of the mu(+)mu(-) atoms are presented. The expected annual number of events is about 400 for Au-Au collisions at RHIC, 5 . 10(4) for PL-Pb and 3 . 10(5) for Ca-Ca collisions at LHC.