Surprises in threshold antikaon-nucleon physics

Joaquim Prades; Jose A. Oller; Michela Verbeni

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Surprises in threshold antikaon-nucleon physics

Jose A. Oller, Joaquim Prades, Michela Verbeni

High Energy Physics - Phenomenology · Submitted 6 Aug 2005

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We typically find two classes of solutions, both of them reproducing previous data, that either can or cannot accommodate the DEAR measurements.

how it is stated · asserted 0.88 read the record →

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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

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What the abstract itself states, as probabilities: claims first 0.16 · states limitation 0.50 · human participants 0.02 · controlled comparison 0.07 · randomized assignment 0.01 · states quantitative result 0.09 · compares with prior results 0.89 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; show every role.

Low energy \bar{K}N interactions are studied within Unitary Chiral Perturbation Theory at next-to-leading order with ten coupled channels. We pay special attention to the recent precise determination of the strong shift and width of the kaonic hydrogen 1s state by the DEAR Collaboration that has challenged our theoretical understanding of this sector of strong interactions. We typically find two classes of solutions, both of them reproducing previous data, that either can or cannot accommodate the DEAR measurements. The former class has not been previously discussed.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	Low energy \bar{K}N interactions are studied within Unitary Chiral Perturbation Theory at next-to-leading order with ten coupled channels.	method 0.83	0.82	0.04	asserted 0.97
s1	We pay special attention to the recent precise determination of the strong shift and width of the kaonic hydrogen 1s state by the DEAR Collaboration that has challenged our theoretical understanding of this sector of strong interactions.	background 0.92	0.06	0.05	asserted 1.00
s2	We typically find two classes of solutions, both of them reproducing previous data, that either can or cannot accommodate the DEAR measurements.	result 1.00	0.90	0.29	asserted 0.88
s3	The former class has not been previously discussed.	gap 0.58	0.68	0.13	asserted 0.99

What kind of paper the classifier reports this is: theoretical result 0.92 · evidence from simulation or computation 0.79.

What was examined, and what was not

sources read

arXiv listing abstract v1

not examined

full text
figures and tables
references and citing sentences
relations to other papers

levels run

P abstract

not run

S sections
T body sentences
C citations
R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

Low energy \bar{K}N interactions are studied within Unitary Chiral Perturbation Theory at next-to-leading order with ten coupled channels. We pay special attention to the recent precise determination of the strong shift and width of the kaonic hydrogen 1s state by the DEAR Collaboration that has challenged our theoretical understanding of this sector of strong interactions. We typically find two classes of solutions, both of them reproducing previous data, that either can or cannot accommodate the DEAR measurements. The former class has not been previously discussed.

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References

Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

Kaon-nucleon scattering lengths from kaonic deuterium experiments
nucl-th 2006-03 conditional novelty 6.0 of 10

A combined analysis of kaonic hydrogen and deuterium data can extract the kaon-nucleon scattering lengths a0 and a1 only for a narrow range of the kaon-deuteron scattering length, imposing stringent constraints on low...
Finding Low Star Discrepancy 3D Kronecker Point Sets Using Algorithm Configuration Techniques
cs.NE 2026-04 unverdicted novelty 5.0 of 10

Optimizing the two Kronecker parameters with irace yields new state-of-the-art L∞ star discrepancy for 3D point sets of size at least 500 and for ranges of sizes.
Low-Energy Kaon-Nucleus Interactions at a \phi-Factory
nucl-th 2006-03 conditional novelty 5.0 of 10

A proposal to use DAΦNE's low-energy kaons in a gaseous KLOE2 target to measure kaon-nucleus reactions at orders-of-magnitude higher rates than existing data.
Prospects for e+e- physics at Frascati between the phi and the psi
hep-ex 2006-03 conditional novelty 4.0 of 10

A roadmap document argues that a high-luminosity e+e- collider at Frascati, running from the phi resonance up to 2.5 GeV, would deliver major improvements in precision Standard Model tests and low-energy hadron physics.

How the literature uses it

11 arXiv papers cite this in 17 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers whose main result relates to this one's

Found among the papers closest to this one by title and main claim. Pith's classifier compared each pair's main results and a second model family confirmed the relation; checked against two further families, shown conflicts agreed 118 times in 120 and shown same results 218 times in 239. The quoted sentence is the other paper's main claim.

States a conflicting result 1 paper

In this comment we demonstrate that the proposed solution violates fundamental principles of scattering theory.

Comment on "Surprises in threshold antikaon-nucleon physics" · 0.99

Papers citing it · 9 sentences without a confident label

Contests it 2 papers

The comparison enables one to immediately conclude that the scattering data, to which the parameters of Refs. [ref] are fitted, are, in general, not consistent with the DEAR data [ref] .

Hadronic atoms in QCD + QED · Analysis of the DEAR data · contest 0.76
It has been puzzling that the energy shifts and decay widths, extracted from the scattering lengths derived in a number of chiral SU(3) based models [ref] , are inconsistent with the DEAR data of kaonic hydrogen.

Kaonic hydrogen atom and kaon-proton scattering length · Introduction · contest 0.77

Uses its data or values 2 papers

Listed in the second and third columns of Table [ref] are respectively the isospin 0 and 1 $KN$ scattering lengths predicted by various chiral SU(3) based models [ref] where the isospin symmetry limit is applied.

Kaonic hydrogen atom and kaon-proton scattering length · Introduction · 0.80
On the other hand, there are experimental data from DEAR, LEPS, CLAS, COSY, HADES [ref] , which have been used to fix these NLO parameters in theoretical analyses [ref] .

Pole trajectories of the $\Lambda(1405)$ helps establish its dynamical nature · Introduction · 0.86

Cites it as background 4 papers

This issue was studied and exposed in more detail in a series of papers by various groups, see e.g. Refs. [ref] .

Kaon-nucleon scattering lengths from kaonic deuterium experiments revisited · Introduction · 0.91
Inspired by the recent precise determination of the energy and decay width by the DEAR Collaboration [ref] , kaonic hydrogen has been extensively studied in the theoretical sector, mainly in effective field theory [ref] .

Kaonic hydrogen atom and kaon-proton scattering length · Introduction · 0.87
For example applications see Refs. [ref] and for a comparison of various models see Ref. [ref] .

The origin of excited states of the $\Lambda$ baryon at the SU(3) point from Lattice QCD · Recap of the Chiral Unitary Approach · 0.80

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