Quasi-elastic knockout of pions and kaons from nucleons by high-energy electrons and quark microscopy of "soft" meson degrees of freedom in the nucleon

Abstract

Electro-production of pions and kaons at the kinematics of quasi-elastic knockout (which is well known in the physics of atomic nucleus and corresponds to the $t$-pole diagram) is proposed for obtaining their momentum distribution (MD) in various channels of virtual decay $N\to B+\pi$, $B=N$, $\Delta$, $N^{\ast }$, $N^{\ast \ast }$, and $N\to Y+K$, $Y=\Lambda$, $\Sigma$. It is a powerful tool for investigation of a quark microscopic picture of the meson cloud in the nucleon. A model of scalar $q\bar{q}$ (${}^3{P}_0$) fluctuation in the non-trivial QCD vacuum is used to calculate pion and kaon momentum distributions (MD) in these channels.

31 pages, 11 figures, submitted to Nucl.Phys.A

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Cited by in corpus (9)

• Deep exclusive charged $\pi$ electroproduction above the resonance region
• Deeply inelastic pions in the exclusive reaction $p(e,e^{\prime }{\pi }^{+})n$ above the resonance region
• Deep exclusive electroproduction of ${\pi }^{+}$ at HERMES
• Role of the rho meson in the description of pion electroproduction experiments at JLab
• Quark model description of quasi-elastic pion knockout from the proton at JLAB
• Quasielastic rho0 electroproduction on the proton at intermediate energy: Role of scalar and pseudoscalar meson exchange
• Resonance-Parton Duality in $(e,e^{\prime }\pi )$ off Nucleons
• Pionic Degrees of Freedom in Atomic Nuclei and Quasielastic Knockout of Pions by High-Energy Electrons
• Beam spin asymmetry in deeply virtual $\pi$ production