On the possibility of observation of $a_0$-$f_0$ mixing in the $pn \to da_0$ reaction

Kudryavtsev, A. E.; Tarasov, V. E.

On the possibility of observation of $a_0$-$f_0$ mixing in the $pn \to da_0$ reaction

Authors

Description

It is shown that, if isospin is not conserved in $a^0_0$- and $f_0$-meson mixing, forward-backward asymmetry arises in the reaction $pn\to da^0_0$. This effect increases near the reaction threshold. The asymmetry is estimated within the framework of a model in which the $a^0_0$-$f_0$ mixing is due to the virtual $π^0\leftrightarrowη$ transition and the difference in masses of the charged and neutral kaons in decay channels. The angular asymmetry near the threshold of the $pn\to da^0_0$ reaction was found to be large, of the order of $8÷15$ %.
8 pages, LaTeX, 4 PostScript figures