K-NSchannelI=1,0 phase shifts as a direct measure of chiral condensation

Bicudo, Pedro; Ribeiro, J. E. F. T.; Rodrigues, João Domingos

doi:10.1103/physrevc.52.2144

Cited by 38 publications

(43 citation statements)

References 42 publications

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“…The potential of equation (1,2) has been used to study the charmonium spectroscopy with a potential strength of K 0 = 290MeV . Although the theoretical results did not differ too much from the experimental ones it was shown in Ref.…”

Section: Breakingmentioning

confidence: 99%

“…To see that this scale is important it is sufficient to consider exotic reactions like K-n scattering for this scale controls the extent of overlap between the bare nucleon and the kaon. In turn this overlap, when taken together with color saturation and a generic spin-spin interaction for the quarks, accounts for the generic hadronic central repulsion, a feature which is notorious in the n-n system [1] and one which can also be measured in the K-n exotic s-wave phase shifts [2]. Exotic reactions like K − n, where the s quark cannot annihilate with any of the quarks intervening in the reaction can be thought as an effective K − n − K − n vertex without the exchange of s-channel resonances.…”

Section: Introductionmentioning

confidence: 99%

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fNπN:From quarks to the pion derivative coupling

Bicudo¹,

Ribeiro²

1997

Phys. Rev. C

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We study the N πN coupling, in the framework of a QCD-inspired confining Nambu-Jona-Lasinio model. A simple relativistic confining and instantaneous quark model is reviewed. The Salpeter equation for the qqq nucleon and the qq boosted pion is solved. The f nπn and f nπ∆ couplings are calculated and they turn out to be reasonably good. The sensibility of f nπn and f nπ∆ to confinement, chiral symmetry breaking and Lorentz invariance is briefly discussed.

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Section: Breakingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

fNπN:From quarks to the pion derivative coupling

Bicudo¹,

Ribeiro²

1997

Phys. Rev. C

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“…Notice the dynamically generated running quark mass [56,57]. Recently, the static-light spectrum was computed in Ref.…”

Section: B Effective Chiral Quark Model With a Linear Potentialmentioning

confidence: 99%

Chiral symmetry restoration in static-light mesons: A chiral restoration theorem, the quark running mass m(k) , and chiral restoration signals in the lattice QCD spectra

Bicudo

2016

Phys. Rev. D

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Chiral symmetry restoration high in the hadron spectra is expected but it remains to be confirmed both in lattice QCD computations and in experiments. Recently, a theorem was derived, relating chiral symmetry restoration high in the hadron spectra to the spontaneous generation of the dynamical quark mass in QCD. We refine the theorem in the case of static-light mesons. Utilizing chiral quark model computations and lattice QCD results for the spectrum of mesons composed by a static antiquark and a light quark, we explore chiral symmetry restoration in the spectrum and the quark running mass m(k).

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“…[32]. To determine this constant we consider the specific overlap where both K * K * and φω have a total spin 0.…”

Section: Rearrangementmentioning

confidence: 99%

The BES f0(1810): a new glueball candidate

et al. 2007

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We analyze the f0(1810) state recently observed by the BES collaboration via radiative J/ψ decay to a resonant φω spectrum and confront it with DM2 data and glueball theory. The DM2 group only measured ωω decays and reported a pseudoscalar but no scalar resonance in this mass region. A rescattering mechanism from the open flavored KK decay channel is considered to explain why the resonance is only seen in the flavor asymmetric ωφ branch along with a discussion of positive C parity charmonia decays to strengthen the case for preferred open flavor glueball decays. We also calculate the total glueball decay width to be roughly 100 MeV, in agreement with the narrow, newly found f0, and smaller than the expected estimate of 200-400 MeV. We conclude that this discovered scalar hadron is a solid glueball candidate and deserves further experimental investigation, especially in the KK channel. Finally we comment on other, but less likely, possible assignments for this state.

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K-NSchannelI=1,0 phase shifts as a direct measure of chiral condensation

Cited by 38 publications

References 42 publications

fNπN:From quarks to the pion derivative coupling

fNπN:From quarks to the pion derivative coupling

Chiral symmetry restoration in static-light mesons: A chiral restoration theorem, the quark running mass m(k) , and chiral restoration signals in the lattice QCD spectra

The BES f0(1810): a new glueball candidate

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