Study of the Nonimpulse Events in the Reactions<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow><mml:mi>d</mml:mi><mml:mo>→</mml:mo><mml:mi>Λ</mml:mi><mml:mi>π</mml:mi><mml:mi>p</mml:mi></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Λ</mml:mi><mml:mi>π</mml:mi><mml:mi>π</mml:mi><mml:mi>N</mml:mi></mml:math>at<mml:ma

Sims, W.; O'Neall, J.S.; Albright, John R.; Brucker, E. B.; Lannutti, J.

doi:10.1103/physrevd.3.1162

Cited by 10 publications

(7 citation statements)

References 14 publications

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“…It has been noted in Ref. [175] that this structure as well as the cusp effect coincide within 10 MeV to the predictions of Aerts and Dover [83,84] for the mass of P -wave the singlet and triplet states D s and D t having a [163,161,166,164,162,165,167] (from top to bottom). The vertical line denotes the ΣN threshold averaged over the masses of Σ + n and Σ 0 p. From Ref.…”

Section: Search In Hyperon Production and Hyperon Formationsupporting

confidence: 69%

“…Early searches for dibaryons in the strange sector have been carried out in K − d interactions at rest, later also with low-energetic K − beams hitting a deuteron target [160,161,162,163,164,165,166,167]. The reaction looked at was K − d → Λpπ − .…”

Section: Search In Hyperon Production and Hyperon Formationmentioning

confidence: 99%

“…Figure 2: Distribution of the Λp-invariant mass M Λp as obtained from the K − d → Λpπ − reaction studied in Refs [163,161,166,164,162,165,167]. (from top to bottom).…”

mentioning

confidence: 99%

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On the history of dibaryons and their final observation

Clement¹

2017

Progress in Particle and Nuclear Physics

132

125

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Section: Search In Hyperon Production and Hyperon Formationsupporting

confidence: 69%

Section: Search In Hyperon Production and Hyperon Formationmentioning

confidence: 99%

See 1 more Smart Citation

On the history of dibaryons and their final observation

Clement¹

2017

Progress in Particle and Nuclear Physics

132

125

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show abstract

“…The data are taken from Refs. [4][5][6][7]9,10,31]. There is clearly a peak around the ΣN mass, i.e.…”

Section: The Reactionmentioning

confidence: 99%

Study of the Λp interaction close to the and thresholds

Machner¹,

Haidenbauer²,

Hinterberger³

et al. 2013

Nuclear Physics A

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The Λp interaction close to the ΣN threshold is considered. Specifically, the pronounced structure seen in production reactions like K − d → π − Λp and pp → K + Λp around the ΣN threshold is analyzed. Modern interaction models of the coupled ΛN −ΣN systems generate such a structure either due to the presence of a (deuteron-like) unstable bound state or of an inelastic virtual state. A determination of the position of the prominent peak as observed in various experiments for the two aforementioned reactions leads to values that agree quite well with each other. Furthermore, the deduced mean value of 2128.7 ± 0.3 MeV for the peak position coincides practically with the threshold energy of the Σ + n channel. This supports the interpretation of the structure as a genuine cusp, signaling an inelastic virtual state in the 3 S1 − 3 D1 partial wave of the ΣN isospin 1/2 channel. There is also evidence for a second peak (or shoulder) in the data sets considered which appears at roughly 10-15 MeV above the ΣN 1 threshold. However, its concrete position varies significantly from data set to data set and, thus, a theoretical interpretation is difficult.

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“…Because the cusps occur over a very narrow momentum range, it is hard to observe them experimentally. Nonetheless, there is experimental evidence for an enhancement in the Λp → Λp cross section near the ΣN threshold [13,51,[55][56][57][58][59][60], as shown in Fig. 2.…”

Section: A Total Cross Sectionsmentioning

confidence: 99%

Test of the hyperon-nucleon interaction within leading order covariant chiral effective field theory

Song,

Liu,

et al. 2021

Preprint

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Motivated by the recent experimental measurements of differential cross sections of the Σ − p elastic scattering in the momentum range of 470 to 850 MeV/c by the J-PARC E40 experiment, we extend our previous studies of S = −1 hyperon-nucleon interactions to relatively higher energies up to 900 MeV/c for both the coupledchannel Λp → (Λp, Σ + n, Σ 0 p), Σ − p → (Λn, Σ 0 n, Σ − p) and single-channel Σ + p → Σ + p reactions. We show that although the leading order covariant chiral effective field theory is only constrained by the low energy data, it can describe the high energy data very well, in particular, the J-PARC E40 differential cross sections. In particular, we predict a pronounced cusp structure close to the ΣN threshold in the Λp → Λp reaction, which can be checked in the future using, e.g., the Femtoscopy technique. The predicted total and differential cross sections are of relevance for ongoing and planned experiments.

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Study of the Nonimpulse Events in the ReactionsK−d→ΛπpandΛππNat

Cited by 10 publications

References 14 publications

On the history of dibaryons and their final observation

On the history of dibaryons and their final observation

Study of the Λp interaction close to the and thresholds

Test of the hyperon-nucleon interaction within leading order covariant chiral effective field theory

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