Central meson production in diffractive reactions

I discuss double-diffractive (double-elastic) productio n f the η ′ and ηc mesons in thepp→ pX p reaction within the formalism of unintegrated gluon distri bution functions (UGDF). The contribution ofγ∗γ∗ → η ′ fusion is estimated. The distributions in the Feynman xF (or rapidity), transferred four-momenta squared between initial and final protons ( t1, t2… (More)