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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We study theoretically the in-flight ($K^-,N$) reactions for the formation oflight kaonic nuclear systems to get deeper physical insights on the expectedspectra, and to investigate the experimental feasibility of the reaction at newfacilities like J-PARC. We show the expected spectra for the formation of the$K^-pp, K^-pn$, $K^-nn$ and $K^-$-$^{11}$B systems which are accessible by the($K^-,N$) experiments. By considering the conversion part of the Green'sfunction, we can show the missing mass spectra of the ($K^-,N$) reactionscoincidence with the particle emissions due to ${\bar K}$ absorption in ${\barK}N\to \pi Y$ processes. To calculate the cross sections, we use the so-called$T\rho$ approximation to evaluate the optical potential. As for the amplitude$T$, we adopt the chiral unitary amplitude of ${\bar K}N$ channel in vacuum forsimplicity, and we also check the medium effects by applying the chiralamplitude at finite density. The effects of the p-wave optical potential of$\Sigma$(1385) channel and the contribution from ${\bar K^0}$ mixing in$^3$He($K^-,n$) reaction are also evaluated numerically. To understand themeanings of the spectrum shape, we also study the behavior of the poles of kaonGreen's function in nuclear matter. We conclude that $^3$He($K^-,n$) and$^3$He($K^-,p$) reactions coincident with the $\pi\Sigma$ emission due to${\bar K}$ absorption may show the certain structure in the bound regionspectra indicating the existence of the unstable kaonic nuclear bound states.As for the $^{12}$C($K^-,p$) spectra with the $\pi\Sigma$ emission, we may alsoobserve the structure in the bound region, however, we need to evaluate themedium effects carefully for larger nuclei.

Formation spectra of light kaonic nuclei by in-flight (${\bar K},N$) reactions with chiral unitary amplitude