1 Ocak 2018 Dergi makalesi Açık Erişim

Bayar, M.; Pavao, R.; Sakai, S.; Oset, E.

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  <dc:creator>Bayar, M.</dc:creator>
  <dc:creator>Pavao, R.</dc:creator>
  <dc:creator>Sakai, S.</dc:creator>
  <dc:creator>Oset, E.</dc:creator>
  <dc:date>2018-01-01</dc:date>
  <dc:description>We have investigated the cross section for the ${\pi }^{-}p\to {K}^{0}\pi \Sigma $ and $pp\to p{K}^{+}\pi \Sigma $ reactions, paying attention to a mechanism that develops a triangle singularity. The triangle diagram is realized by the decay of a ${N}^{*}$ to ${K}^{*}\Sigma $ and the ${K}^{*}$ decay into $\pi K$, and the $\pi \Sigma $ finally merges into $\Lambda \left(1405\right)$. The mechanism is expected to produce a peak around $2140\phantom{\rule{4pt}{0ex}}\mathrm{MeV}$ in the $K\Lambda \left(1405\right)$ invariant mass. We found that a clear peak appears around $2100\phantom{\rule{4pt}{0ex}}\mathrm{MeV}$ in the $K\Lambda \left(1405\right)$ invariant mass, which is about $40\phantom{\rule{4pt}{0ex}}\mathrm{MeV}$ lower than the expectation, and that is due to the resonance peak of a ${N}^{*}$ resonance which plays a crucial role in the ${K}^{*}\Sigma $ production. The mechanism studied produces the peak of the $\Lambda \left(1405\right)$ around or below 1400 MeV, as is seen in the $pp\to p{K}^{+}\pi \Sigma $ HADES experiment.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/106903</dc:identifier>
  <dc:identifier>oai:zenodo.org:106903</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>Physical Review C 97(3)</dc:source>
  <dc:title>Role of the triangle singularity in $\Lambda \left(1405\right)$ production in the ${\pi }^{-}p\to {K}^{0}\pi \Sigma $ and $pp\to p{K}^{+}\pi \Sigma $ processes</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
</oai_dc:dc>