Exclusive channels in semi-inclusive production of pions and kaons

Abstract

We investigate the role of exclusive channels in semi-inclusive electroproduction of pions and kaons. Using the QCD factorization theorem for hard exclusive processes we evaluate the cross sections for exclusive pseudoscalar and vector meson production in terms of generalized parton distributions and meson distribution amplitudes. We investigate the uncertainties arising from the modeling of the nonperturbative input quantities. Combining these results with available experimental data, we compare the cross sections for exclusive channels to that obtained from quark fragmentation in semi-inclusive deep inelastic scattering. We find that rho^0 production is the only exclusive channel with significant contributions to semi-inclusive pion production at large z and moderate Q^2. The corresponding contribution to kaon production from the decay of exclusively produced phi and K^* is rather small.

33 pages, 18 figures

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Cited by in corpus (13)

• The role of the quark and gluon GPDs in hard vector-meson electroproduction
• Transversity in hard exclusive electroproduction of pseudoscalar mesons
• Nucleon form factors, generalized parton distributions and quark angular momentum
• The longitudinal cross section of vector meson electroproduction
• Deeply Virtual Meson Production on the nucleon
• Generalized parton distributions and transverse densities in a light-front quark-diquark model for the nucleons
• Electroproduction of $\varphi (1020)$ mesons at $1.4\le Q^2\le$ GeV${}^2$ measured with the CLAS spectrometer
• Double hadron leptoproduction in the nuclear medium
• Vector meson production from a polarized nucleon
• K${}^{-}$ over K${}^{+}$ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy
• Exclusive electroproduction and the quark structure of the nucleon
• Partonic Structure of Light Nuclei
• Transverse target single-spin asymmetry in inclusive electroproduction of charged pions and kaons