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 have investigated the cross section for the $\pi^-p\rightarrowK^0\pi\Sigma$ and $pp\rightarrow pK^+\pi\Sigma$ reactions paying attention to amechanism that develops a triangle singularity. The triangle diagram isrealized by the decay of a $N^*$ to $K^*\Sigma$ and the $K^*$ decay into $\piK$, and the $\pi\Sigma$ finally merges into $\Lambda(1405)$. The mechanism isexpected to produce a peak around $2140$ MeV in the $K\Lambda(1405)$ invariantmass. We found that a clear peak appears around $2100$ MeV in the$K\Lambda(1405)$ invariant mass which is about $40$ MeV lower than theexpectation, and that is due to the resonance peak of a $N^*$ resonance whichplays a crucial role in the $K^*\Sigma$ production. The mechanism studiedproduces the peak of the $\Lambda(1405)$ around or below 1400 MeV, as is seenin the $pp\rightarrow pK^+\pi\Sigma$ HADES experiment.

physical review. c

The role of the triangle singularity in $\Lambda(1405)$ production in  the $\pi^-p\rightarrow K^0\pi\Sigma$ and $pp\rightarrow pK^+\pi\Sigma$  processes