The strange meson resonances observed in the reaction  → ππ at GeV/c

Aston, D.; Awaji, N.; D'Amore, J.; Dunwoodie, W.; Endorf, R.; Fujii, Keisuke; Hayashii, H.; Iwata, S.; Johnson, W.B.; Kajikawa, R.; Kunz, P.; Leith, D. W. G. S.; Levinson, L.; Matsui, Tetsuo; Meadows, B.; Miyamoto, A.; Nussbaum, M.; Ozaki, H.; Pak, Chwang Siek; Ratcliff, B. N.; Schultz, D.; Shapiro, S.; Shimomura, T.; Sinervo, P.; Sugiyama, A.; Suzuki, S.; Tarnopolsky, G.; Tauchi, T.; Toge, N.; Ukai, K.; Waite, A. P.; Williams, S.

doi:10.1016/0550-3213(87)90665-1

Cited by 45 publications

(26 citation statements)

References 14 publications

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“…In this subsection, we discuss possibility of different assignments of K * 2 (1980) from two aspects, mass and decay information. In 1987, LASS reported a structure in the reaction K − p →K 0 π + π − n [64], and they obtained resonance parameters M = (1973 ± 8 ± 25) MeV and Γ = (373 ± 33 ± 60) MeV. This is the particle called K * 2 (1980) listed in PDG [1].…”

Section: F Statesmentioning

confidence: 99%

A systematic study of mass spectra and strong decay of strange mesons

et al. 2017

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The mass spectrum of the kaon family is analyzed by the modified Godfrey-Isgur model with a color screening effect approximating the kaon as a heavy-light meson system. This analysis gives us the structure and possible assignments of the observed kaon candidates, which can be tested by comparing the theoretical results of their two-body strong decays with the experimental data. Additionally, prediction of some partial decay widths is made on the kaons still missing in experiment. This study is crucial to establishing the kaon family and searching for their higher excitations in the future.

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Section: F Statesmentioning

confidence: 99%

A systematic study of mass spectra and strong decay of strange mesons

et al. 2017

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“…The theoretical result 1.01 ± 0.34 fits well with the PDG value. The second ratio, Kρ/K * (892)π, reads Γ K * (1680)→Kρ Γ K * (1680)→K * (892)π exp = 1.05 +0.27 −0.11 fit by PDG 0.97 ± 0.09 +0.30 −0.10 by ASTON 87 [75] .…”

Section: Decay Channelmentioning

confidence: 99%

Strong and radiative decays of excited vector mesons and predictions for a new ϕ(1930) resonance

2017

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“…6, as the determinant of a matrix in both angular-momentum and channel space, becomes the relevant quantization condition determining the spectrum in a finite volume 4 . Given knowledge of the energy dependence of a scattering matrix, t ( ) ij (E cm ), one can solve this condition for a discrete spectrum, {E…”

Section: +1mentioning

confidence: 99%

“…In isospin-1/2, as well as the phase-shift analysis of Estabrooks et al, there is a considerable set of πK scattering results provided by the LASS experiment -of particular relevance here are the final states πK [2], ηK [3] and ππK [4]. In the partial-wave analysis of πK → πK, a peaking amplitude in S-wave is interpreted as a broad K 0 (1430) resonance which appears to saturate unitarity.…”

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confidence: 99%

Resonances in coupledπK,ηKscattering from lattice QCD

et al. 2015

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Coupled-channel πK and ηK scattering amplitudes are determined by studying the finite-volume energy spectra obtained from dynamical lattice QCD calculations. Using a large basis of interpolating operators, including both those resembling a qq construction and those resembling a pair of mesons with relative momentum, a reliable excited-state spectrum can be obtained. Working at mπ = 391 MeV, we find a gradual increase in the J P = 0 + πK phase-shift which may be identified with a broad scalar resonance that couples strongly to πK and weakly to ηK. The low-energy behavior of this amplitude suggests a virtual bound-state that may be related to the κ resonance. A bound state with J P = 1 − is found very close to the πK threshold energy, whose coupling to the πK channel is compatible with that of the experimental K (892). Evidence is found for a narrow resonance in J P = 2 + . Isospin-3/2 πK scattering is also studied and non-resonant phase-shifts spanning the whole elastic scattering region are obtained.Understanding the spectrum and properties of excited hadron states directly from the underlying theory of quarks and gluons, Quantum Chromodynamics (QCD), remains an unsolved problem. One challenge lies in the fact that excited hadrons are not asymptotically observable states, but rather appear as resonant enhancements in the scattering of lighter stable hadrons. Another challenge is the difficulty of computation within QCD which, at the energy scales of relevance, is a non-perturbative, relativistic theory. One technique which has shown significant progress when applied to hadron spectroscopy is lattice QCD. Lattice QCD is a systematically improvable calculational scheme in which the quark and gluon fields are discretized on a finite cubic grid, rendering the theory amenable to numerical computation. Monte-Carlo sampling of possible field configurations leads to estimates for hadronic correlation functions whose spectral content can then be explored.The interactions of the lightest octet of pseudoscalar mesons are important since they are the stable particles to which excited hadrons decay. In this manuscript we will explore πK scattering using lattice QCD techniques. This channel, having net strangeness, cannot proceed through intermediate quarkless states, which simplifies the phenomenology with respect to isospin-0 channels in which glueball states may appear.The bulk of our knowledge of kaon scattering amplitudes comes from kaon beam experiments at SLAC in the 1970s and 80s. πK scattering amplitudes were extracted from reactions using a proton target by extrapolating to small momentum transfer, t, where nearly-on-shell pion exchange dominates. Phase-shift analysis of the flavor exotic isospin-3/2 amplitudes as extracted from * dudek@jlab.org

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The strange meson resonances observed in the reaction → ππ at GeV/c

Cited by 45 publications

References 14 publications

A systematic study of mass spectra and strong decay of strange mesons

A systematic study of mass spectra and strong decay of strange mesons

Strong and radiative decays of excited vector mesons and predictions for a new ϕ(1930) resonance

Resonances in coupledπK,ηKscattering from lattice QCD

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