Aspects of a0-f0 mixing in the reaction pn->da0

Abstract

Some aspects of a0-f0 mixing effects in the reaction $\vec{p}n\to d{a}_0^0$ with perpendicular polarized proton beam are discussed. An angular--asymmetry parameter $A$ is defined to study those effects. It is shown that, for energies close to the production threshold, the angular--asymmetry parameter $A(\theta ,\varphi )$ is proportional to the a0-f0 mixing amplitude for arbitrary polar and azimuthal angles $\theta$ and $\varphi$ of the outgoing $a_0$ meson. This statement is also valid for arbitrary energies, but then only at polar angles $\theta =0^0$ and $\theta =90^0$. The mass dependence of the differential cross section $d\sigma /d{m}_{{\pi }^0\eta }$ in the reaction $pn\to d{\pi }^0\eta$ in the presence of \mix mixing is also discussed.

17 pages, 3 Figures

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Cited by in corpus (26)

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• Manifestation of the $a_0^0(980)-f_0(980)$ mixing in the reaction ${\pi }^{-}p\to \eta {\pi }^{0}n$ on a polarized target
• Mechanisms of the isospin-breaking decay $f_1(1285)\to f_0(980){\pi }^0\to {\pi }^{+}{\pi }^{-}{\pi }^0$
• Analysis on the composite nature of the light scalar mesons $f_0(980)$ and $a_0(980)$
• The $D_s^{+}\to a_0(980)e^{+}{\nu }_e$ reaction and the $a_0(980)-f_0(980)$ mixing
• Investigation of $J/\psi \to \gamma {\pi }^0\eta ({\pi }^{+}{\pi }^{-},{\pi }^0{\pi }^0)$ radiative decays including final-state interactions
• Strong isospin symmetry breaking in light scalar meson production
• Determination of the \bar K^0 d scattering length from the reaction pp \to d \bar K^0 K^+
• Near-threshold production of $a_0(980)$-mesons in $\pi N$ and NN collisions and $a_0/f_0$-mixing
• Determination of $f_0-a_0^0$ mixing angle from QCD sum rules
• Photoproduction and mixing effects of scalar a0 and f0 mesons
• Angular asymmetries in the reactions pp \to dπ^+ηand pn \to dπ^0ηand a_0-f_0 mixing
• Study of $a_0^0(980)$-$f_0(980)$ mixing from $a_0(1450)\to a_0^0(980)f_0(500)\to {\pi }^{+}{\pi }^{-}{f}_0(500)$
• Extraction of the KK-bar isovector scattering length from pp -> d K^+ K-bar^0 data near threshold
• Strangeness Production in pp and pn Reactions at COSY
• The ${\bar{B}}_s^0\to J/\psi {\pi }^0\eta$ decay and the $a_0(980)-f_0(980)$ mixing
• The impact of $a_0^0(980)-f_0(980)$ mixing on the localized $CP$ violations of the $B^{-}\to K^{-}{\pi }^{+}{\pi }^{-}$ decay
• Scalar meson production in nucleon-nucleon collisions near threshold