Speaker
Description
The general formula that represents location of the
spin quantization axis of the meson-resonance $V$ in the inclusive reaction
$A+B\Longrightarrow V+X\Longrightarrow 1+2+X$ is suggested.
This formula determine the location of the spin
quantization axis of the particles 1,2 and $V$
via the cross sections of the subreactions $A+B\Longrightarrow V+X$ and $V\to 1+2$.
For this aim is used the relativistic field theoretical approach, where
the amplitude of the reaction $A+B\Longrightarrow 1+2+X$ is
expressed as a product of the amplitudes of the subreactions
$A+B\Longrightarrow V+X$ and $V\to 1+2$.
It is shown that the special cases of the suggested formulation were used
in the numerous high energy experiments in order to study of asymmetries
and alignment of the particles 1 and 2 in
reactions $A+B\Longrightarrow V+X\Longrightarrow 1+2+X$.
Special attention is given to the partial wave decomposition of the
relativistic amplitudes and cross section over the
the orbital moments and spin of the
intermediate $V$-meson and final particles 1 and 2. Equivalence of this
partial wave decomposition and Jacob-Wick decomposition is considered.
