The inclusive production of ω and mesons is studied in the backward region of the interaction of 12 GeV protons with polyethylene, carbon, and copper targets. The mesons are measured in e+e- decay channels. The production cross sections of the mesons are presented as functions of rapidity y and transverse momentum pT. The nuclear mass number dependences (A dependences) are found to be A0.710±0.021(stat)±0.037(syst) for ω mesons and A0.937±0.049(stat)±0.018(syst) for mesons in the region of 0.9<y<1.7 and pT<0.75 GeV/c.
ASJC Scopus subject areas
- Nuclear and High Energy Physics