Multichannel parametrization of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mover><mml:mi>K</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:mi>N</mml:mi></mml:mrow></mml:math>scattering amplitudes and extraction of resonance parameters

Zhang, Hongyu; Tulpan, J.; Shrestha, Manoj; Manley, D. M.

doi:10.1103/physrevc.88.035205

Cited by 41 publications

(21 citation statements)

References 18 publications

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“…However, because the currently available data in the KΞ channel are scarce and of low quality, they do not provide sufficient constraints for the model parameters to permit an in-depth analysis of that channel [53]. In this context, we mention that a coupledchannel partial-wave analysis ofK-induced reactions up to W = 2.1 GeV has also been performed recently by the Kent State University group [56,57] which includes theKN , πΛ, πΣ, πΛ(1520), πΣ(1385),K * N , andK∆ channels, but not the KΞ channel.…”

Section: Introductionmentioning

confidence: 99%

K¯+N→K+Ξreaction andS=−1hyperon resonances

Jackson

Haberzettl

et al. 2015

Phys. Rev. C

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TheK+N → K +Ξ reaction is studied for center-of-momentum energies ranging from threshold to 3 GeV in an effective Lagrangian approach that includes the hyperon s-and u-channel contributions as well as a phenomenological contact amplitude. The latter accounts for the rescattering term in the scattering equation and possible short-range dynamics not included explicitly in the model. Existing data are well reproduced and three above-the-threshold resonances were found to be required to describe the data, namely, the Λ(1890), Σ(2030), and Σ(2250). For the latter resonance we have assumed the spin-parity of J P = 5/2 − and a mass of 2265 MeV. The Σ(2030) resonance is crucial in achieving a good reproduction of not only the measured total and differential cross sections, but also the recoil polarization asymmetry. More precise data are required before a more definitive statement can be made about the other two resonances, in particular, about the Σ(2250) resonance that is introduced to describe a small bump structure observed in the total cross section ofThe present analysis also reveals a peculiar behavior of the total cross section data in the threshold energy region in K − + p → K + + Ξ − , where the P -and D-waves dominate instead of the usual S-wave. Predictions for the target-recoil asymmetries of theK + N → K + Ξ reaction are also presented.

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Section: Introductionmentioning

confidence: 99%

K¯+N→K+Ξreaction andS=−1hyperon resonances

Jackson

Haberzettl

et al. 2015

Phys. Rev. C

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“…. The Λ and Σ poles were extracted in [50], fitting the single energy partial waves from [227] of KN scattering data with a K-matrix model that incorporates analyticity in the angular momentum. The results are summarized in Figure 18.…”

Section: Regge Phenomenology Of Light Baryonsmentioning

confidence: 99%

Novel approaches in Hadron Spectroscopy

Albaladejo,

Bibrzycki,

Dawid

et al. 2021

Preprint

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The last two decades have witnessed the discovery of a myriad of new and unexpected hadrons. The future holds more surprises for us, thanks to new-generation experiments. Understanding the signals and determining the properties of the states requires a parallel theoretical effort. To make full use of available and forthcoming data, a careful amplitude modeling is required, together with a sound treatment of the statistical uncertainties, and a systematic survey of the model dependencies. We review the contributions made by the Joint Physics Analysis Center to the field of hadron spectroscopy.

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“…Recent data analyses have confirmed most 3* and 4* Λ states, but derived rather different information of some little known states. Recent couple channel analyses from the Kent group (KSU) and JLab have extracted more hyperons [7][8][9][10][11][12][13][14]. The Kent group found some new states like Λ(1710)1/2 + and Λ(2050)3/2 − , which were listed in Particle Data Group (PDG) [6] with one star, by fitting partial-wave amplitudes using multichannel parametrization [7].…”

Section: Introductionmentioning

confidence: 99%

“…Recent couple channel analyses from the Kent group (KSU) and JLab have extracted more hyperons [7][8][9][10][11][12][13][14]. The Kent group found some new states like Λ(1710)1/2 + and Λ(2050)3/2 − , which were listed in Particle Data Group (PDG) [6] with one star, by fitting partial-wave amplitudes using multichannel parametrization [7]. A similar couple-channel fit has been done by JPAC group [10], where Λ(2050) is confirmed by this analysis but Λ(1800) is not seen.…”

Section: Introductionmentioning

confidence: 99%

A possible interpretation of $Λ$ baryon spectrum with pentaquark components

Xu¹,

Kaewsnod²,

Zhang³

et al. 2022

Preprint

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The Λ baryon spectrum is studied within the SU(3) flavor symmetry in a constituent quark model. We found that it is rather difficult to accommodate some negative-parity Λ resonances as single q 2 s (q = u, d quarks) states in the conventional three-quark picture. The ground q 3 sq pentaquark mass spectrum is evaluated and a possible interpretation is proposed in the work: the observed Λ(1405)1/2 − , Λ(1670)1/2 − and Λ(1800)1/2 − are three-state mixtures of two p-wave q 2 s states and one ground q 3 sq pentaquark state, so are the Λ(1520)3/2 − , Λ(1690)3/2 − and Λ(2050)3/2 − resonances.

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Multichannel parametrization ofK¯Nscattering amplitudes and extraction of resonance parameters

Cited by 41 publications

References 18 publications

K¯+N→K+Ξreaction andS=−1hyperon resonances

K¯+N→K+Ξreaction andS=−1hyperon resonances

Novel approaches in Hadron Spectroscopy

A possible interpretation of $Λ$ baryon spectrum with pentaquark components

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