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Double spin correlations in the reaction dd->pnpn and in the pn-elastic scattering

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arxiv 2311.12605 v2 pith:XSKVG4XT submitted 2023-11-21 nucl-th

classification nucl-th
keywords doublescatteringspincorrelationelasticenergylargereaction
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abstract

An unexpectedly large double spin correlation with a sharp dependence on energy, found in elastic proton-proton scattering at large angles in the c.m.s. energy range $\sqrt{s_{pp}}= 3 \div 5.5$ GeV, may be associated with the formation of exotic eight-quark resonances at the thresholds of the strangeness and charm production. For a deeper understanding of the dynamics of this process it is important to measure double spin correlation in elastic $pn$ scattering in the same kinematics. The possibility of obtaining this data from the reaction $d d\to pnp$ with two polarized deuterons on NICA SPD is considered in this paper.

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  1. Relations between spin observables of the reactions $dd\to npd$ and $pd\to pd$ in impulse approximation

    nucl-th 2025-06 conditional novelty 6.0 of 10

    In the impulse approximation, the analyzing powers and spin correlations of the dd to npd breakup equal those of pd elastic scattering up to constant factors 1, 2/3, or zero.

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