Theoretical analysis of (1405) → () 0 mass spectra produced in p + p → p + (1405) + K + reactions

  title={Theoretical analysis of (1405) → () 0 mass spectra produced in p + p → p + (1405) + K + reactions},
  author={Maryam Hassanvand and Seyed Zafarollah Kalantari and Yoshinori Akaishi and Toshimitsu Yamazaki},
We formulated the Lambda(1405) (abbreviated as Lambda^*) --> (Sigma pi)^0 invariant-mass spectra produced in p+p --> p + Lambda^* + K^+ reactions, in which both the incident channel for a quasi-bound K^-p state and its decay process to (Sigma pi)^0 were taken into account realistically. We calculated M(Sigma pi) spectral shapes for various theoretical models for Lambda^*. They are asymmetric and skewed, and were compared with recent experimental data of HADES, yielding M(Lambda^*) = 1405 -9 +11… 

Analysis of Λ(1405) production data in the π−p → K0πΣ reaction at pπ = 1.69 GeV/c

This analysis investigated the formation of the Λ(1405) state, using the Generalized Optical Theorem and T-matrix operator, and applied a combined transition operator, Tmix, which contains T21 () and T22 (= TπΣ−π΢Σ) due to the initial channel mixing in the ΢(1385) formation.

Strong binding and shrinkage of single and double nuclear systems (K−pp, K−ppn, K−K−p and K−K−pp) predicted by Faddeev-Yakubovsky calculations

Relativistic corrections on the calculated non-relativists results indicate substantial lowering of the bound-state masses, especially of K−K−pp, toward the kaon condensation regime.

Hyperon III: $$K^{-}p - \pi \varSigma $$ coupled-channel dynamics in the $$\varLambda (1405)$$ mass region

Low-energy data on the three charge states in $\gamma p \rightarrow K^+(\varSigma \pi )$ from CLAS at JLab, on $K^-p\rightarrow \pi ^0\pi ^0\varLambda $ and $\pi ^0\pi ^0\varSigma $ from the Crystal

The Λ(1405) state in a chiral unitary approach with off-shell corrections to dimensional regularized loop functions

The Bethe-Salpeter equation is solved in the framework of the unitary coupled-channel approximation by using the pseudoscalar meson-baryon octet interaction. The loop function of the intermediate

Review of the $${\Lambda }$$(1405) A curious case of a strangeness resonance

During its long-lasting history, the $\Lambda(1405)$ has become a benchmark for our understanding of the $\rm SU(3)$ hadron dynamics. Starting with its theoretical prediction and later experimental

Single-pole nature of the detectable Lambda(1405)

We have investigated the single-pole nature of the detectable Lambda(1405) in detail, by employing a chiral model having double poles of a KbarN-piSigma coupled channel T-matrix. The effects of the



The HADES Collaboration


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