Reaction 302 - 409

Baldini, A.; Flaminio, V.; Moorhead, W. G.; Morrison, David R.

doi:10.1007/10367917_16

Cited by 3 publications

(5 citation statements)

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“…3 compared with the experimental data. [8] There, we see that we can describe the total cross section data quite well. As mentioned above, the N * (1535) resonance and N * (1650) resonance couple strongly to the KΛ channel.…”

Section: Parametersmentioning

confidence: 76%

Nucleon Resonances in the π ⁻ p → K ⁰ Γ Reaction near Threshold

Wu¹,

Lü²,

Xie³

et al. 2015

Commun. Theor. Phys.

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We investigate the two-body reaction π − p → K 0 Λ within the effective Lagrangian approach and the isobar model. In addition to the "background" contributions from t-channel K * exchange, u-channel Σ( 1192) and Σ * (1385) exchanges, and s-channel nucleon pole terms, the contributions from the nucleon resonances N * (1535), N * (1650), and N * (1720) are investigated. It is shown that the inclusion of these nucleon resonances contributions leads to a good description of the experimental total and differential cross sections data at low energy region. The s-channel N * (1535), N * (1650), and N * (1720) resonances and the t-channel K * exchange give the dominant contributions below W = 1.76 GeV, while the s-channel nucleon pole, u-channel Σ(1192) and Σ * (1385) exchanges give the minor contributions.

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Section: Parametersmentioning

confidence: 76%

Nucleon Resonances in the π ⁻ p → K ⁰ Γ Reaction near Threshold

Wu¹,

Lü²,

Xie³

et al. 2015

Commun. Theor. Phys.

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“…Our best result of the total cross sections of π − p → K 0 Λ reaction as a function of the invariant mass of the π − p system are shown in Fig. 3 compared with the experimental data [8]. There, we see that we can describe the total cross section data quite well.…”

Section: Resultsmentioning

confidence: 61%

“…The strangeness production reaction π − p → K 0 Λ is a good platform to study the properties of the nucleon resonances, especially for those which have significant couplings to πN and KΛ channels, because the π − p → K 0 Λ reaction is a pure isospin I = 1/2 two-body reaction channel in meson-nucleon dynamics, and there are no contributions from the isospin I = 3/2 ∆(1232) baryons. Hence, lots of experimental data have been accumulated [5][6][7][8], where the total and differential cross sections of π − p → K 0 Λ reaction are measured.…”

Section: Introductionmentioning

confidence: 99%

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Nucleon resonances in the $π^- p \to K^0 Λ$ reaction near threshold

Wu,

Lü,

Xie

et al. 2014

Preprint

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We investigate the two-body reaction π − p → K 0 Λ within the effective Lagrangian approach and the isobar model. In addition to the "background" contributions from t-channel K * exchange, uchannel Σ(1192) and Σ * (1385) exchanges, and s-channel nucleon pole terms, the contributions from the nucleon resonances N * (1535), N * (1650), and N * (1720) are investigated. It is shown that the inclusion of these nucleon resonances contributions leads to a good description of the experimental total and differential cross sections data at low energy region. The s-channel N * (1535), N * (1650), and N * (1720) resonances and the t-channel K * exchange give the dominant contributions below W = 1.76 GeV, while the s-channel nucleon pole, u-channel Σ(1192) and Σ * (1385) exchanges give the minor contributions.

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“…Fig.1. Total cross section for the reaction π − p → K + Λ (solid line) and π − p → D − Λ + c (dashed line) as a function of the invariant energy above thresholds in comparison to the data from Ref [9]…”

mentioning

confidence: 99%

Exclusive and semi-inclusive strangeness and charm production in πN and NN reactions

Gasparyan

Grishina

Kondratyuk

et al. 2003

Refereed and Selected Contributions From International Conference on Quark Nuclear Physics

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Using the Quark-Gluon Strings Model (QGSM) combined with Regge phenomenology we consider the reactions π − p → K 0 Λ and π − p → D − Λ + c which are dominated by the contributions of the K * and D * Regge trajectories, respectively. The spin structure of the amplitudes is described by introducing Reggeized Born terms. It is found that the existing data for the reaction π − p → K 0 Λ are in reasonable agreement with the model predictions. To describe the absolute values of the cross sections it is necessary to introduce also suppression factors which can be related to absorption corrections. Furthermore, assuming the SU(4) symmetry to hold for Regge residues and the universality of absorption corrections we calculate the cross section of the reaction π − p → D − Λ + c . Employing the latter results from π − p reactions we then estimate the contributions of the pion exchange mechanism to the cross sections of the reactions N N → N KΛ and N N → NDΛc and compare them with the contributions of the K and D exchanges. We find that the N N reactions are dominated not by pion exchange but by K and D exchanges, respectively. Moreover, assuming the SU(4) symmetry to hold approximately for the coupling constants gNDΛ c = gNKΛ we analyze also the production of leading Λc hyperons in the reaction N N → ΛcX. It is shown that the non-perturbative mechanism should give an essential contribution to the Λc yield for x ≥ 0.5.

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Reaction 302 - 409

Cited by 3 publications

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Nucleon Resonances in the π ⁻ p → K ⁰ Γ Reaction near Threshold

Nucleon Resonances in the π ⁻ p → K ⁰ Γ Reaction near Threshold

Nucleon resonances in the $π^- p \to K^0 Λ$ reaction near threshold

Exclusive and semi-inclusive strangeness and charm production in πN and NN reactions

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Reaction 302 - 409

Cited by 3 publications

References 0 publications

Nucleon Resonances in the π − p → K 0 Γ Reaction near Threshold

Nucleon Resonances in the π − p → K 0 Γ Reaction near Threshold

Nucleon resonances in the $π^- p \to K^0 Λ$ reaction near threshold

Exclusive and semi-inclusive strangeness and charm production in πN and NN reactions

Contact Info

Product

Resources

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Nucleon Resonances in the π ⁻ p → K ⁰ Γ Reaction near Threshold

Nucleon Resonances in the π ⁻ p → K ⁰ Γ Reaction near Threshold