Erratum to: “Scattering of vector mesons off nucleons” [Nucl. Phys. A 706 (2002) 431]

Lutz, Matthias; Wolf, Gy.; Friman, Bengt

doi:10.1016/j.nuclphysa.2005.11.017

Cited by 137 publications

(323 citation statements)

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“…The task to construct a systematic effective field theory for the meson-baryon scattering processes in the resonance region is closely linked to the fundamental question as to what is the 'nature' of baryon resonances. Here we support the conjecture [1,2,3,4] that baryon resonances not belonging to the large-N c ground states are generated dynamically by coupled-channel dynamics [5,6,7,8,9,10]. For a comprehensive discussion of this issue we refer to [4].…”

Section: Introductionsupporting

confidence: 80%

“…The meson and baryon propagators, D(q) and S(p), are used in the notation of [3]. We apply the convenient kinematics:…”

Section: Effective Field Theory Of Chiral Coupled-channel Dynamicsmentioning

confidence: 99%

“…For a comprehensive discussion of this issue we refer to [4]. This conjecture was the basis of the phenomenological model [3], which generated successfully non-strange s-and d-wave resonances by coupled-channel dynamics describing a large body of pion and photon scattering data. Before the event of the quark-model it was already suggested by Wyld [5] and also by Dalitz, Wong and Rajasekaran [6] that a t-channel vector meson exchange model for the s-wave meson-baryon scattering problem has the potential to dynamically generate s-wave baryon resonances upon solving a coupled-channel Schrödinger equation.…”

Section: Introductionmentioning

confidence: 99%

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Quark-mass dependence of baryon resonances

Lutz

Garcı́a-Recio

Kolomeitsev³

et al. 2005

Nuclear Physics A

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We study the quark-mass dependence of J P = 1 2 − s-wave and J P = 3 2 − d-wave baryon resonances. Parameter-free results are obtained in terms of the leading order chiral Lagrangian. In the 'heavy' SU(3) limit with m π = m K ≃ 500 MeV the s-wave resonances turn into bound states forming two octets plus a singlet representations of the SU (3) group. Similarly the d-wave resonances turn into bound states forming an octet and a decuplet in this limit. A contrasted result is obtained in the 'light' SU(3) limit with m π = m K ≃ 140 MeV for which no resonances exist.

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Section: Introductionsupporting

confidence: 80%

“…The meson and baryon propagators, D(q) and S(p), are used in the notation of [3]. We apply the convenient kinematics:…”

Section: Effective Field Theory Of Chiral Coupled-channel Dynamicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quark-mass dependence of baryon resonances

Lutz

Garcı́a-Recio

Kolomeitsev³

et al. 2005

Nuclear Physics A

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“…This idea inspired hadronic models developed to calculate the in-medium self-energies of hadrons and their spectral functions. Mass shifts and/or in-medium broadening as well as more complex structures in the spectral function due to the coupling of vector mesons to nucleon resonances have been predicted [4,5] (Fig.1 (left) and (middle)). The theoretical and experimental activities have been summarized in [6][7][8].…”

Section: Introductionmentioning

confidence: 80%

“…The other curves show the spectral function for normal density ρ 0 =0.16 f m −3 and ρ=2ρ 0 , respectively. (middle) The ω spectral function for densities ρ, ρ 0 , 2ρ 0 and coupling to resonances [5]. (right) Pseudoscalar meson masses as functions of the nuclear matter density as predicted within the Nambu-Jona-Lasinio model in [9].…”

Section: Introductionmentioning

confidence: 99%

Experimental results on theω- andη′-nucleus potential - on the way to mesic states

Nanova¹

2015

EPJ Web of Conferences

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Abstract. Different experimental approaches to determine the meson-nucleus optical potential are discussed. The experiments have been performed with the Crystal Barrel/TAPS detector system at the ELSA accelerator in Bonn and the Crystal Ball/TAPS at the MAMI accelerator in Mainz. Experimental results about the real and imaginary part of the η -and ω-nucleus optical potential are presented. The imaginary part of the meson-nucleus optical potential is determined from the in-medium width of the meson by the measurement of the transparency ratio. Information on the real part of the optical potential is deduced from measurements of the excitation function and momentum distribution which are sensitive to the sign and depth of the potential. The results are discussed and compared to theoretical predictions. The data for both mesons are consistent with a weakly attractive potential. The formation and population of ω-nucleus and η -nucleus bound states is additionally discussed.

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The Chiral Restoration Transition of QCD and Low Mass Dileptons

Rapp¹,

Wambach²,

Hees³

2010

Relativistic Heavy Ion Physics

108

143

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Recent developments in the evaluation of vector-meson spectral functions in hot and dense matter are discussed with emphasis on connections to the chiral phase transition in QCD. Model independent approaches including chiral low-density expansions, lattice QCD, chiral and QCD sum rules are put into context with model predictions for in-medium vector-spectral function utilizing effective Lagrangians. Hadronic manybody calculations predict a strong broadening (and little mass shift) of the ρ spectral function which rapidly increases close to the expected phase boundary of hadronic and quark-gluon matter. Pertinent dilepton rates appear to degenerate with perturbative quark-antiquark annihilation in the Quark-Gluon Plasma, suggestive for chiral symmetry restoration. Applications to low-mass dilepton spectra in heavy-ion collisions result in quantitative agreement with recent high-quality data at the CERN-SPS. Thermal radiation from temperatures around T c consistently reproduces the experimental dilepton excess observed at masses above 1 GeV as well. The interpretation of dilepton sources at high transverse momentum appears to be more involved.

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Erratum to: “Scattering of vector mesons off nucleons” [Nucl. Phys. A 706 (2002) 431]

Cited by 137 publications

References 0 publications

Quark-mass dependence of baryon resonances

Quark-mass dependence of baryon resonances

Experimental results on theω- andη′-nucleus potential - on the way to mesic states

The Chiral Restoration Transition of QCD and Low Mass Dileptons

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