Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-01-30
Nucl.Phys. A739 (2004) 124-150
Physics
Nuclear Physics
Nuclear Theory
31 pages, 11 figures, submitted to Nucl.Phys.A
Scientific paper
10.1016/j.nuclphysa.2004.03.120
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 $N \to B+\pi$, $B=N$, $\Delta$, $N^*$, $N^{**}$, 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 $q \bar{q}$ ($^3P_0$) fluctuation in the non-trivial QCD vacuum is used to calculate pion and kaon momentum distributions (MD) in these channels.
Neudatchin V. G.
Obukhovsky Igor T.
Sviridova L. L.
Yudin N. P.
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