The reaction K−p → ωΛ in the c.m. energy range 1915–2168 MeV

Brandstetter, A.; Butterworth, I.; Deen, S. M.; Litchfield, P. J.; Berthon, A.; Vrána, J.; Zatz, J.; Wójcik, W.; Meyer, J.; Tallini, B.

doi:10.1016/0550-3213(72)90358-6

Cited by 20 publications

(6 citation statements)

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“…[17]. In this paper we extend the report to three-body final states π 0 π 0 Λ [18], π 0 π 0 Σ [19], and the quasi-two-body final states π 0 Λ(1520) [20,21], K∆ [22], πΣ(1385) [23], K * N [24], and ωΛ [25,26,27]. We emphasize that in both papers, all data are included in the partial wave analysis.…”

Section: Introductionsupporting

confidence: 58%

“…K − p → Σ + (1385)π −[23]: The associated Legendre coefficients for the differential cross sections and the density matrix elements ρ K − p → Σ − (1385)π + [23]: The associated Legendre coefficients for the differential cross sections and the density matrix elements ρ K − p →K * 0 n [24]: The associated Legendre coefficients for the differential cross sections and the density matrix elements ρ K − p → K * − p [24]: The associated Legendre coefficients for the differential cross sections and the density matrix elements ρ K − p → ωΛ[25,26,27]: The associated Legendre coefficients for the differential cross sections and the density matrix elements ρ…”

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confidence: 99%

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Hyperon II: Properties of excited hyperons

et al. 2019

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We report properties of Λ and Σ hyperon resonances formed in K − induced reactions. Special emphasis is laid on the analysis of the three-body final states 2π 0 Λ and 2π 0 Σ and of the quasi-two-body final states πΛ(1520),K∆(1232), πΣ(1385),K * N , and ωΛ. We give pole positions of Λ and Σ hyperon resonances and transition residues from the K − p initial to various final states as well as Breit-Wigner masses and widths and decay branching ratios. Twenty resonances and "bumps" reported in the Review of Particle Physics are not required in our fits, evidence for five new resonances is reported. The observed mass spectrum is compared to the spectrum calculated in the Bonn quark model. Three spin doublets, six Λ hyperons, are tentatively assigned to the SU(3) singlet system.2 Data on K − p → three-body finals states 2.1 Reactions K − p → π 0 π 0 Λ and K − p → π 0 π 0 Σ The reactions K − p → π 0 π 0 Λ [18] and K − p → π 0 π 0 Σ [19] were studied at BNL at eight incident K − momenta between 514 and 750 MeV/c using the Crystal Ball multiphoton spectrometer. Figure 1 shows the Dalitz plots for the arXiv:1907.13387v1 [nucl-ex]

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Section: Introductionsupporting

confidence: 58%

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confidence: 99%

Hyperon II: Properties of excited hyperons

et al. 2019

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“…Under Λ(2000), the RPP'2012 [6] listed resonance claims near this mass. Two entries under Λ(2000) were reported with J P = 3/2 − quantum numbers [47,48] that were considered to be obsolete [6]. They could have been shifted to Λ(2050)3/2 − .…”

Section: The Full Spectrummentioning

confidence: 99%

$$\varLambda $$ and $$\varSigma $$ Excitations and the Quark Model

et al. 2020

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The spectrum of $$\varLambda $$ Λ and $$\varSigma $$ Σ excitations is reviewed taking into account (nearly) all hyperon resonances which were seen in early analyses or in one of the recent partial-wave analyses. The spectrum is compared with the old Isgur–Karl model and the Bonn model. These models allows us to discuss the SU(3) structure of the observed resonances. The SU(3) decomposition is compared with SU(6) relations between the different decay modes. Seven $$\varLambda $$ Λ states are proposed to be classified as SU(3) singlet states. The hyperon spectrum is compared with the spectrum of N and $$\varDelta $$ Δ resonances.

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“…Under Λ(2000), the RPP'2012 [1] listed resonance claims near this mass. Two entries under Λ(2000) were reported with J P = 3/2 − quantum numbers [40,41] that were considered to be obsolete [1]. They could have been shifted to Λ(2050)3/2 − .…”

Section: The Full Spectrummentioning

confidence: 99%

$Λ$ and $Σ$ Excitations and the Quark Model

Klempt,

Burkert,

Thoma

et al. 2020

Preprint

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The spectrum of Λ and Σ excitations is reviewed taking into account (nearly) all hyperon resonances which were seen in early analyses or in one of the recent partial-wave analyses. The spectrum is compared with the old Isgur-Karl model and the Bonn model. These models allows us to discuss the SU(3) structure of the observed resonances. The SU(3) decomposition is compared with SU(6) relations between the different decay modes. Seven Λ states are proposed to be classified as SU(3) singlet states. The hyperon spectrum is compared with the spectrum of N and ∆ resonances.

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The reaction K−p → ωΛ in the c.m. energy range 1915–2168 MeV

Cited by 20 publications

References 5 publications

Hyperon II: Properties of excited hyperons

Hyperon II: Properties of excited hyperons

$$\varLambda $$ and $$\varSigma $$ Excitations and the Quark Model

$Λ$ and $Σ$ Excitations and the Quark Model

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