Determination of the branching fractions for K−-meson absorptions at rest in carbon nuclei

Velde-Wilquet, C. Vander; Sacton, J.; Wickens, J.; Tovee, D.N.; Davis, D. H.

doi:10.1007/bf02771028

Cited by 85 publications

(108 citation statements)

References 15 publications

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“…3 that absorption at rest of K − mesons by nuclei will have very similar characteristic features for all targets from C and above along the periodic table. This is consistent with the limited data from BC experiments [11,12,13] that do not show any marked dependence of a multinucleon absorption fraction of 0.25±0.05 on the nuclear target. This value will serve here as a constraint on conventional analyses of stronginteraction observables in kaonic atoms.…”

Section: Absorption At Restsupporting

confidence: 91%

“…Davis et al [11] quote 0.26±0.03 for the multinucleon capture fraction for K − on a mixture of C, F and Br. Moulder et al [12] quote 0.28±0.03 for that fraction on Ne, and the fraction for C is given by Vander Velde-Wilquet et al [13] as 0.19±0.03. We therefore adopt as a best estimate of an experimental K − multinucleon absorption-at-rest fraction an average value of 0.25±0.05 for C and heavier nuclei.…”

Section: Absorption At Restmentioning

confidence: 96%

“…However, since the absorption fractions reported from the latter method are quoted with considerably smaller uncertainties than those of the former, we use here exclusively the results of three such BC experiments [11,12,13]. Davis et al [11] quote 0.26±0.03 for the multinucleon capture fraction for K − on a mixture of C, F and Br.…”

Section: Absorption At Restmentioning

confidence: 99%

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K−N amplitudes below threshold constrained by multinucleon absorption

Friedman¹,

Gal²

2017

Nuclear Physics A

123

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Six widely different subthreshold K − N scattering amplitudes obtained in SU(3) chiral-model EFT approaches by fitting to low-energy and threshold data are employed in optical-potential studies of kaonic atoms. Phenomenological terms representing K − multinucleon interactions are added to the EFT-inspired single-nucleon part of the K − -nucleus optical potential in order to obtain good fits to kaonic-atom strong-interaction level shifts and widths across the periodic table. Introducing as a further constraint the fractions of single-nucleon K − absorption at rest from old bubble-chamber experiments, it is found that only two of the models considered here reproduce these absorption fractions. Within these two models, the interplay between single-nucleon and multinucleon K − interactions explains features observed previously with fully phenomenological optical potentials. Radial sensitivities of kaonic atom observables are re-examined, and remarks are made on the role of 'subthreshold kinematics' in absorption-at-rest calculations.

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Section: Absorption At Restsupporting

confidence: 91%

Section: Absorption At Restmentioning

confidence: 96%

Section: Absorption At Restmentioning

confidence: 99%

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K−N amplitudes below threshold constrained by multinucleon absorption

Friedman¹,

Gal²

2017

Nuclear Physics A

123

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“…8 is rather strong, exceeding the absorptive IHW-based in-medium 1N amplitude for densities higher than ≈0.4ρ 0 . A possible comparison with experiment is provided by evidence from old emulsion data [19] for roughly 1:3 ratio of mN:1N absorptivities. This ratio is seen in Fig.…”

Section: On Separatingmentioning

confidence: 99%

Kaonic atoms and in-medium amplitudes II: Interplay between theory and phenomenology

Friedman

Gal

2013

Nuclear Physics A

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A microscopic kaonic-atom optical potential V (1) K − is constructed, using the Ikeda-Hyodo-Weise NLO chiral K − N subthreshold scattering amplitudes constrained by the kaonic hydrogen SIDDHARTA measurement, and incorporating Pauli correlations within the Waas-Rho-Weise generalization of the Ericson-Ericson multiple-scattering approach. Good fits to kaonic atom data over the entire periodic table require additionally sizable K − NN-motivated absorptive and dispersive phenomenological terms, in agreement with our former analysis based on a post-SIDDHARTA in-medium chirally-inspired NLO separable model by Cieplý and Smejkal. Such terms are included by introducing a phenomenological potential V (2) K − and coupling it self-consistently to V (1) K − . Properties of resulting kaonic atom potentials are discussed with special attention paid to the role of K − -nuclear absorption and to the extraction of density-dependent amplitudes representing K − multi-nucleon processes.

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“…Still, experimental results on K − absorption on 2 or more nucleons are rather scarce in literature, with a relevant part of the experimental data produced by old bubble chamber experiments [10][11][12] which didn't have a good enough resolution to study high momentum (≥ 400-500MeV/c) protons and Λ's.…”

Section: Introductionmentioning

confidence: 99%

Search for a boundK⁻ppsystem

Camerini

2010

EPJ Web of Conferences

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Abstract. Data from the K − absorption reaction on 6,7 Li, 9 Be, 13 C and 16 O have recently been collected by FINUDA at the DAΦNE φ-factory (Laboratori Nazionali di Frascati-INFN), following an earlier lower statitics run on 12 C and some other targets. FINUDA is a high acceptance magnetic spectrometer which performed a wide range of studies by detecting the charged particles and neutrons exiting the targets after the absorption event. In this paper it is discussed about the study of the A(K − , Λp) reaction in the context of the search for deeply bound K-nuclear states. The observation of a bump in the Λp invariant mass distribution is discussed in terms of a possible signature of a deeply bound K − pp kaonic cluster as well as of more conventional physics. An overview of the experimental situation in this field will be given.

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Determination of the branching fractions for K−-meson absorptions at rest in carbon nuclei

Cited by 85 publications

References 15 publications

K−N amplitudes below threshold constrained by multinucleon absorption

K−N amplitudes below threshold constrained by multinucleon absorption

Kaonic atoms and in-medium amplitudes II: Interplay between theory and phenomenology

Search for a boundK⁻ppsystem

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Determination of the branching fractions for K−-meson absorptions at rest in carbon nuclei

Cited by 85 publications

References 15 publications

K−N amplitudes below threshold constrained by multinucleon absorption

K−N amplitudes below threshold constrained by multinucleon absorption

Kaonic atoms and in-medium amplitudes II: Interplay between theory and phenomenology

Search for a boundK−ppsystem

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Product

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Search for a boundK⁻ppsystem