Heavy meson description with a screened potential

González, P.; Valcarce, A.; Garcilazo, H.; Vijande, J.

doi:10.1103/physrevd.68.034007

Cited by 56 publications

(74 citation statements)

References 33 publications

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“…Screened confining potentials have been analyzed in the literature providing an explanation to the missing state problem in the baryon spectra [32], improving the description of the heavy-meson spectra [33], and justifying the deviation of the meson Regge trajectories from the linear behavior for higher angular momentum states [34]. Confinement also presents an spin-orbit contribution taken to be an arbitrary combination of scalar and vector terms of the form…”

Section: Calculating Frameworkmentioning

confidence: 99%

Open-charm meson spectroscopy

2006

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We present a theoretical framework that accounts for the new D J and D sJ mesons measured in the open-charm sector. These resonances are properly described if considered as a mixture of conventional P −wave quark-antiquark states and four-quark components. The narrowest states are basically P −wave quark-antiquark mesons, while the dominantly four-quark states are shifted above the corresponding two-meson threshold, being broad resonances. We study the electromagnetic decay widths as basic tools to scrutiny their nature. The proposed explanation incorporates in a natural way the most recently discovered mesons in charmonium spectroscopy.

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Section: Calculating Frameworkmentioning

confidence: 99%

Open-charm meson spectroscopy

2006

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“…Although string breaking has not been definitively confirmed through lattice calculations [13], a quite rapid crossover from a linear rising to a flat potential is well established in SU(2) Yang-Mills theories [14]. Such screened confining potentials provide with an explanation to the missing state problem in the baryon spectra [15], improve the description of the heavy meson spectra [16], and justify the deviation of the meson Regge trajectories from the linear behavior for higher angular momentum states [17].…”

Section: Su(3) Constituent Quark Modelmentioning

confidence: 99%

The nature of the light scalar mesons

Vijande¹,

Valcarce²,

Fernández³

2005

AIP Conference Proceedings

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Despite the apparent simplicity of meson spectroscopy, light scalar mesons cannot be accommodated in the usual qq structure. We study the description of the scalar mesons below 2 GeV in terms of the mixing of a chiral nonet of tetraquarks with conventional qq states. A strong diquark-antidiquark component is found for several states. The consideration of a glueball as dictated by quenched lattice QCD drives a coherent picture of the isoscalar mesons.Pacs: 12.39.-x,12.38.-t 1

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“…The screened potentials introduced initially to fit lattice data have been used phenomenologically [28,29]. However, the applicability of screened potentials to the spectral description has been a matter of debate [30] since their use is not justified above the meson-meson string breaking threshold.…”

Section: Quarkonia Description By Static Potentialsmentioning

confidence: 99%

Heavy meson interquark potential

González¹,

Mathieu²,

Vento³

2011

Phys. Rev. D

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The resolution of Dyson-Schwinger equations leads to the freezing of the QCD running coupling (effective charge) in the infrared, which is best understood as a dynamical generation of a gluon mass function, giving rise to a momentum dependence which is free from infrared divergences. We calculate the interquark static potential for heavy mesons by assuming that it is given by a massive One Gluon Exchange interaction and compare with phenomenologyical fits inspired by lattice QCD. We apply these potential forms to the description of quarkonia and conclude that, even though some aspects of the confinement mechanism are absent in the Dyson-Schwinger formalism, the spectrum can be reasonably reproduced. We discuss possible explanations for this outcome.

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Heavy meson description with a screened potential

Cited by 56 publications

References 33 publications

Open-charm meson spectroscopy

Open-charm meson spectroscopy

The nature of the light scalar mesons

Heavy meson interquark potential

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