Wednesday, July 28, 2010

Production of electron


physics is mostly related with physis so that study of electron is physics study. and electron are produce as; Process of two pion production in electron - polarized proton scattering is investigated. In Weizs\"acker-Williams approximation the differential spectral distributions and the spin-momentum correlations are considered. The spin correlation effects caused by $\rho$-meson widths are estimated to be of order of several percents. Both channels of $\pi^+\pi^-$ and $\pi^+\pi^0$ creation are considered. The effects of intermediate excited baryons are not considered. The spectral distributions on pion energy fractions in polarized and unpolarized cases are presented analytically and numerically.

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