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

Abstract

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.

arXiv comment12 pages, 8 figures; typos added

References in corpus (12)

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• eta' meson production in proton-proton collisions
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Cited by in corpus (16)

• Hadron properties in the nuclear medium
• Evidence for in-medium modification of the $\varphi$ meson at normal nuclear density
• Hadrons in strongly interacting matter
• Modification of the $\omega$-Meson Lifetime in Nuclear Matter
• Inclusive $\omega$ photoproduction from nuclei and $\omega$ in the nuclear medium
• First measurement of low momentum dielectrons radiated off cold nuclear matter
• Nuclear-matter modification of decay widths in the $\varphi \to e^{+}{e}^{-}$ and $\varphi \to K^{+}{K}^{-}$ channels
• Study of possible ωbound states in nuclei with the (γ,p) reaction
• A-dependence of phi-meson production in p+A collisions
• The width of the omega meson in the nuclear medium
• A novel spectral broadening from vector--axial-vector mixing in dense matter
• Novel spectral broadening from vector--axial-vector mixing in dense matter
• Centrality dependence of subthreshold $\varphi$ meson production in Ni+Ni collisions at 1.9A GeV
• Analysis of spectral modification of $\varphi$ mesons at finite density using a transport approach in the 12 GeV pA reactions
• Nuclear dependence of light neutral meson production in p-A collisions at 400 GeV with NA60
• Velocity dependence of the mass modifications of $\rho$ and $\omega$ mesons in 12 GeV $p+A$ reactions