Results 91 to 100 of about 197,487 (262)
Diffractive production of S and D wave vector mesons in DIS [PDF]
arXiv, 1999 In this work the production of vector mesons in diffractive DIS is analyzed, with an emphasis on the impact of the internal spin structure of a vector meson upon its virtual photoproduction rate. We derived the full sets of s-channel helicity conserving and violating amplitudes for pure S and D wave vector mesons and found a striking difference between
arxiv
Nuclear Physics B - Proceedings Supplements, 2009 Recent experimental results on diffractive vector meson (VM) production and deeply virtual Compton scattering (DVCS) from the H1 and ZEUS collaborations are reviewed. The data are compared with theoretical predictions.
openaire +3 more sources
Vector meson–vector meson interaction and dynamically generated resonances
Journal of Physics: Conference Series, 2012 We report upon 11 composite meson states, dynamically generated from the vector meson–vector meson interaction using the local hidden gauge formalism within a unitary approach. Six of these states are associated to the f0(1370), f0(1710), f2(1270), f'2(1525), a2(1320) and K*2(1430) resonances.
Eulogi Oset +2 more
openaire +2 more sources
Diffractive Vector Mesons in DIS: Meson Structure and QCD [PDF]
Acta Phys.Polon. B31 (2000) 2485-2494, 2000 I review the modern status of QCD theory of diffractive vector meson production with the focus on shrinkage of photons with Q2 and (Q2+mV2)$scaling, j-plane properties of the QCD pomeron and Regge shrinkage of diffraction cone, $s$-channel helicity non-conservation and sensitivity to spin-orbital properties of vector mesons.
arxiv
Effective chiral theory of large N_C QCD of mesons [PDF]
, 2001 En effective chiral theory of large N_C QCD of pseudoscalar, vector, and axial-vector mesons is reviewed.
arxiv +1 more source
Hard Electroproduction of Vector Mesons [PDF]
Proceedings of the XVI International Workshop on Deep-Inelastic Scattering and Related Topics, 2008 It is reported on a global analysis of hard vector-meson electroproduction which is based on the handbag factorization. The generalized parton distributions are constructed from their forward limits with the help of double distributions and the partonic subprocesses are calculated within the modified perturbative approach.
openaire +3 more sources
Impact of vector meson polarization on its interaction with matter
European Physical Journal C: Particles and FieldsThe production of unstable particles on different nuclei provides the possibility to determine the total cross section of the interaction of vector mesons $$V=\rho ,\omega ,\varphi , K^{*0}(892),J/\psi $$ V = ρ , ω , φ , K ∗ 0 ( 892 ) , J / ψ etc.
S. R. Gevorkyan, A. V. Guskov
doaj +1 more source
Vector meson dominance and polarization
Nuclear Physics B, 1968 Abstract The vector dominance model relates amplitudes for reactions induced by photons (e.g., ifπ-production from nucleons) to amplitudes for reactions induced by vector mesons. In the applications of such relations one conventionally assumes that the vector mesons have to be polarized transversely with respect to the c.m. system.
FRAAS, H, Schildknecht, Dieter
openaire +3 more sources
Physics Letters B, 2018 We make predictions for cross sections of ρ and ϕ vector meson photoproduction in ultraperipheral Xe–Xe collisions at sNN=5.44TeV. Analyzing the momentum transfer distribution of ρ mesons in this process, we explore the feasibility of extracting the ...
V. Guzey, E. Kryshen, M. Zhalov
doaj
Diffraction and Vector Mesons Working Group Summary [PDF]
arXiv, 2009 We summarise the talks presented in the working group on diffraction and vector mesons at the DIS 2009 workshop.
arxiv