English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

It is considered the problem of spin physics related with the difference ofrepresentation of the elastic interaction between the neutron and proton. Inthe first case the charge-exchange reaction $np\to pn$ under the angle $\theta$is supposed, in the second --- the simple elastic scattering of $np\to np$,when the neutron is going in opposite direction $\pi-\theta$. The transitionfrom one representation to another is provided by the Majorana operator. In theframework of impulse approximation it is twice calculated the quasi-elasticcharge-exchange reaction of a neutron on a deuteron. In the frame of $nd\top(nn)$ scattering of proton to the angle $\theta$ it gives the well-known Deanformula. Using other representation $nd\to (nn)p$ as a neutron elasticscattering under the angle $\pi-\theta$ (together with neutron-spectator in$nn$-pair) the alternative formula is presented.

Charge-exchange quasi-elastic process $nd\to p(nn)$ under $0^\circ$ in the frame of elastic $np\to np$ scattering to $180^\circ$