Production of Λ(1405) in K−p reactions at 4.2 GeV/c

Hemingway, R.J.

doi:10.1016/0550-3213(85)90556-5

Cited by 177 publications

(213 citation statements)

References 13 publications

Supporting

Mentioning

201

Contrasting

Order By: Relevance

“…There are also data [58] on the invariant mass spectrum of the Σ + π − system, which have been exploited to investigate the nature of the Λ(1405) resonance. Finally, the last piece of crucial experimental information comes from the recent KEK measurement [24] of the K − p scattering length.…”

Section: Experimental Datamentioning

confidence: 99%

Low energyK¯Ninteractions and Faddeev calculation of theK−dscattering length in isospin and particle

et al. 2003

View full text Add to dashboard Cite

KN interactions are investigated via an effective non-linear chiral meson-baryon Lagrangian. The adjustable parameters are determined by a fitting procedure on the K − p threshold branching ratios and total cross-section data for p lab K ≤ 250 MeV/c. We produce predictions for the Σπ mass spectrum, and scattering lenghts a K − p , an(K − n → K − n), a 0 n (K 0 n → K 0 n), and aex(K − p → K 0 n). The KN amplitudes thus obtained, as well as those for other two-body channels (πN , N N , and Y N ) are used as input to predict the scattering length A K − d , for which we have devised a relativistic version of the three-body Faddeev equations. Results for all two-and three-body coupled channels are reported both in isospin and particle bases. All available KN data are well reproduced and our best results for the K − p and K − d scattering lenghts are a K − p = (−0.90 + i0.87) fm and A K − d = (−1.80 + i1.55) fm.

show abstract

Section: Experimental Datamentioning

confidence: 99%

Low energyK¯Ninteractions and Faddeev calculation of theK−dscattering length in isospin and particle

et al. 2003

View full text Add to dashboard Cite

show abstract

“…This has been observed in past experiments [13,14] as well as more recent ones [15][16][17], and while it is generally agreed that this is due to its strong coupling to the NK final state that is above its nominal mass, the reason for this strong coupling has been a subject of debate. Chiral unitary theory, which combines chiral Lagrangians with unitarity among coupled channels, has been active in investigations of the Λ(1405), and many theorists in this community think that the Λ(1405) is a "dynamically generated" resonance that is generated through meson-baryon rescattering interactions.…”

Section: λ(1405)mentioning

confidence: 91%

Production of Resonances Using CLAS at Jefferson Lab

Moriya

2015

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. Measurements of hadronic resonances produced in photoproduction reactions at Jefferson Lab are shown and discussed. Emphasis is placed on the production of the excited hyperon states Σ(1385), Λ(1405), and Λ(1520). Some future prospects for the upcoming Jefferson Lab 12 GeV era are given, where the CLAS12 and GlueX detectors will see unprecedented amounts of data using electromagnetic probes and further our knowledge of hadronic resonances.

show abstract

“…Additionally, a full understanding of the resonance is only possible, if it is reconstructed in different experiments, since theory predicts the Λ(1405) line shape to be sensitive to the initial reaction. Measurements with kaon and pion beams are hampered by low statistics [4,5]. Recent progress was made in the sector of γ induced reactions [6], and data from p + p reactions were published, which show the decay Λ(1405) → Σ 0 + π 0 [7].…”

Section: Motivationmentioning

confidence: 99%

Measurement of the Lambda(1405)-Resonance with the HADES-Spectrometer

Siebenson¹

2010

Proceedings of XLVIII International Winter Meeting on Nuclear Physics in Memoriam of Ileana Iori — PoS(BORMIO2010)

View full text Add to dashboard Cite

We present an analysis of the Λ(1405) resonance in p + p reactions at a kinetic beam energy of 3.5 GeV, measured by the High Acceptance Di-Electron Spectrometer (HADES). The resonance is reconstructed in the two charged decay channels Σ ± π ∓ , with help of a kinematic refit, which improves the mass resolution. The high misidentification of pions and protons as kaons required the development of a sophisticated sideband analysis, which can describe the misidentification background quite well.

show abstract

Production of Λ(1405) in K−p reactions at 4.2 GeV/c

Cited by 177 publications

References 13 publications

Low energyK¯Ninteractions and Faddeev calculation of theK−dscattering length in isospin and particle

Low energyK¯Ninteractions and Faddeev calculation of theK−dscattering length in isospin and particle

Production of Resonances Using CLAS at Jefferson Lab

Measurement of the Lambda(1405)-Resonance with the HADES-Spectrometer

Contact Info

Product

Resources

About