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

@inproceedings{Hassanvand2012TheoreticalAO, 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}, year={2012} }

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…

## 9 Citations

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

- PhysicsProceedings of the Japan Academy. Series B, Physical and biological sciences
- 2019

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−πΣ) 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

- PhysicsProceedings of the Japan Academy. Series B, Physical and biological sciences
- 2013

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

- Physics
- 2020

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

- Physics
- 2016

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

- Physics
- 2020

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)

- PhysicsProgress of Theoretical and Experimental Physics
- 2018

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…

## References

SHOWING 1-10 OF 17 REFERENCES

### Proc

- Jpn. Acad. B 84, 264
- 2008

### Phys

- Rev. 76, 045201
- 2007

### Nucl Phys

- B 253, 742
- 1985

### G: Nucl

- Part. Phys. 17, 289
- 1991

### Phys

- Rev. Lett. 95, 052301
- 2005

### Particle Data Group)

- J. Phys. G 37,
- 2010

### Nucl

- Phys. A 725, 181
- 2003

### Nucl

- Phys. A 483, 493
- 1988

### Phys

- Rev. C 79, 014003
- 2009