Channel cross-sections of K−p reactions from 1.934 to 2.516 GeV/c

Bellefon, A. de; Berthon, A.; Billoir, P.; Brunet, J. M.; Tristram, G.; Vrána, J.; Baccari, B.; Poulard, G.; Revel, D.; Tallini, B.

doi:10.1007/bf02730191

Cited by 8 publications

(7 citation statements)

References 12 publications

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“…4 is, e.g., incompatible with the neighboring bins. The same statements holds for the data from [66] above 2200 MeV which are incompatible with those from [63] and [58]. The polarization data are shown in Fig.…”

Section: Masssupporting

confidence: 65%

“…Some data are slightly incompatible with other data in the normalization. The following scaling factors were applied in the fits: K 0 n: dσ/dΩ 1.025 [23] π − Σ + : dσ/dΩ 1.03 [57] 0.95 [76] π 0 Σ 0 : dσ/dΩ 1.06 [23] Polarization data are important for partial wave analyses but often limited in statistics. Also other low-statistics data like K − p → KΞ can be described rather badly without significantly affecting the total χ 2 tot .…”

Section: The Data and The Primary Fitmentioning

confidence: 99%

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Hyperon I: Partial-wave amplitudes for K-p scattering

et al. 2019

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Early data on K − induced reactions off protons are collected and used in a coupled-channel partial wave analysis (PWA). Data which had been published in the form of Legendre coefficients are included in the PWA. In a primary fit using 3* and 4* resonances only, we observe some significant discrepancies with the data. In a systematic search for new Λ and Σ hyperon resonances, additional candidates are found. The significance of the known and of the additional resonances is evaluated. Seventeen resonances listed with 1* or 2* and one resonance listed with 3* in the Review of Particle Properties cannot be confirmed, five new hyperons are suggested. The partial-wave amplitudes deduced in this analysis are compared to those from other analyses.

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Section: Masssupporting

confidence: 65%

Section: The Data and The Primary Fitmentioning

confidence: 99%

Hyperon I: Partial-wave amplitudes for K-p scattering

et al. 2019

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“…and the propagator from [53]: (11) which obeys the criterion formulated above. Here P µν = −g µν + q µ q ν /s.…”

Section: Modelmentioning

confidence: 99%

“…The KN → KΞ reaction was studied experimentally in the sixties and seventies [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] when the bubble chamber technique was popular. Later, the reaction left the focus of experimentalists, and only one measurement of the forward cross section at one energy was performed at KEK [26].…”

Section: Introductionmentioning

confidence: 99%

Phenomenological model for the Kbar N --> K Xi reaction

Sharov,

Korotkikh,

Lanskoy

2011

Preprint

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A phenomenological model for the KN → KΞ reaction is suggested. The model includes s and u channel exchanges by Λ, Σ, Σ(1385), and Λ(1520) and s channel exchanges by above-threshold hyperonic resonances. Explicit expression for the propagator for a particle with spin 7/2 is presented. High-mass and high-spin resonances play a significant role in the process. We deal with the whole set of existing experimental data on the cross sections and polarizations in the energy range from the threshold to 2.8 GeV in the center-of-mass system and reach a good agreement with experiments. Applications of the model to other elementary reactions of Ξ production and to Ξ hypernuclear spectroscopy are briefly discussed.

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“…[45] Co,f or example,c an be usedi ni ts Raneyf orm as ac atalyst to hydrogenate nitriles. [46] Notably,r ecent developments in heterogeneous Co catalysis have emerged, describing av ery active Co catalyst or the hydrogenation of C=Od ouble and C Nt riple bonds. [47] Only recently,aheterogeneous Fecatalyzed hydrogenation of nitroarenes was described, introducing ap romising catalyst system on the basis of this abundant metal that operates under relatively mild conditions.…”

Section: 312active Metal Componentsmentioning

confidence: 99%

Technology Trends of Catalysts in Hydrogenation Reactions: A Patent Landscape Analysis

et al. 2020

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The purpose of this review is to present an overview of the patent landscape for catalysts used in hydrogenation reactions. Based on patent data extracted from PatBase®, we use predefined patent classifications as well as a keyword‐based search for our analyses. The results indicate that the number of patent families that protect heterogeneous catalysts grows twice as fast as that for their homogeneous counterparts. Furthermore, the data show a shift towards abundant and non‐toxic elements in heterogeneous catalysis, while the noble metals continue to dominate the patent landscape of homogeneous catalysis. A subsequent geographical analysis reveals that the high growth rates in heterogeneous catalysis, especially for nickel and iron, are driven by China. Conversely, patenting activities with regard to homogeneous catalysts mainly take place in the USA, the EU, and Japan. The subsequent keyword‐based search illustrates the continuous industrial relevance of enantioselective hydrogenation and transfer hydrogenation, as well as the rapidly increasing body of patents in hydrodeoxygenation. Setting these finding into context, we present and apply two concepts that are commonly used in patent analyses, namely the technology life cycle and the S‐curve. We conclude that hydrogenation catalysis has not reached its peak economic relevance yet and will continue to spark valuable patents and innovations in the future.

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Channel cross-sections of K−p reactions from 1.934 to 2.516 GeV/c

Cited by 8 publications

References 12 publications

Hyperon I: Partial-wave amplitudes for K-p scattering

Hyperon I: Partial-wave amplitudes for K-p scattering

Phenomenological model for the Kbar N --> K Xi reaction

Technology Trends of Catalysts in Hydrogenation Reactions: A Patent Landscape Analysis

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