Nuclear mass number dependence of inclusive production of omega and phi mesons in 12 GeV p + A collisions

Details Nuclear mass number dependence of inclusive production of omega and phi mesons in 12 GeV p + A collisions Nuclear mass number dependence of inclusive production of omega and phi mesons in 12 GeV p + A collisions

2006-03-14

arxiv.org/abs/nucl-ex/0603013v3

Phys.Rev.C74:025201,2006

Physics

Nuclear Physics

Nuclear Experiment

12 pages, 8 figures; typos added

Scientific paper

10.1103/PhysRevC.74.025201

The inclusive production of omega and phi 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 p_T. The nuclear mass number dependences (A dependences) are found to be A^{0.710 +/- 0.021(stat) +/- 0.037(syst)} for omega mesons and A^{0.937 +/- 0.049(stat) +/- 0.018(syst)} for phi mesons in the region of 0.9 < y < 1.7 and p_T < 0.75 GeV/c.

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