We report recent results on diffraction and exclusive production obtained by the CDF collaboration in pp̄ collisions at the Fermilab Tevatron collider at √ s=1.96 TeV. A measurement of the Q and t dependence of the diffractive structure function extracted from diffractive dijet production in the range of 10 < Q < 10 GeV and |t| < 1 GeV is presented. Results are also presented for exclusive e+e−,...

We report the first observation of exclusive ρ production in ultra-peripheral collisions at RHIC. The ρ are produced electromagnetically at large impact parameters where no hadronic interactions occur. The produced ρ have a small perpendicular momentum, consistent with production that is coherent on both the photon emitting and scattering nuclei. We observe both exclusive ρ production, and ρ pr...

different research and theoretical approaches have been adopted in the study of the space of music production. the space of production and consumption of culture in iran as a country in transition is diverse and heterogeneous. such a diversity and heterogeneity in itself causes problems for this space. the problem of this space, which in this research work has been defined as a small social spa...

Being the “mother distributions” of all types two-parton correlation functions, generalized transverse momentum dependent parton distributions (GTMDs) have attracted a lot attention over last years. We argue that exclusive double production pseudoscalar quarkonia (ηc or ηb) in nucleon-nucleon collisions gives access to GTMDs gluons.

Exclusive φ production in proton-proton collisions in the resonance model. Abstract The exclusive φ meson production in proton-proton reactions is calculated within the resonance model. The considered model was already successfully applied to the description of π, η, ρ, ω, ππ production in proton-proton collisions. The only new parameter entering into the model is the ω − φ mixing angle θ mix w...