Gluonic hadrons

Close, F.E.

doi:10.1088/0034-4885/51/6/002

Cited by 168 publications

(144 citation statements)

References 113 publications

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“…Dilatation symmetry is explicitly broken by the logarithmic term in Eq. (5). The quantity G 0 is the vev of the G field, which, in the full version of the model (8), is (slightly) larger than Λ appearing in Eq.…”

Section: B the Elsm Lagrangianmentioning

confidence: 98%

“…This state is also important because it is related to two basic phenomena of QCD: the anomalous breaking of dilatation invariance and the generation of the gluon condensate. In a widely studied phenomenological scenario two scalarisoscalar quarkonia,nn = (ūu +dd)/ √ 2 andss, and one bare glueball state mix and form the scalar resonances f 0 (1370), f 0 (1500), and f 0 (1710) [5][6][7][8][9]. Our aim is to investigate this system by using a three-flavor chiral effective approach which we describe in the following.…”

Section: Introductionmentioning

confidence: 99%

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Isf0(1710)a glueball?

2014

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We study the three-flavor chirally and dilatation invariant extended Linear Sigma Model with (pseudo)scalar and (axial-)vector mesons as well as a scalar dilaton field whose excitations are interpreted as a glueball. The model successfully describes masses and decay widths of quarkantiquark mesons in the low-energy region up to 1.6 GeV. Here we study in detail the vacuum properties of the scalar-isoscalar J P C = 0 ++ channel and find that (i) a narrow glueball is only possible if the vacuum expectation value of the dilaton field is (at tree-level) quite large (i.e., larger than what lattice QCD and QCD sum rules suggest) and (ii) that only solutions in which f0 (1710) is predominantly a glueball are found. Moreover, the resonance f0(1370) turns out to be mainly (ūu +dd)/ √ 2 and thus corresponds to the chiral partner of the pion, while the resonance f0(1500) is mainlyss.

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Section: B the Elsm Lagrangianmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Isf0(1710)a glueball?

2014

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“…(21) yields a common mass square to the entire nonet. Hence, if we consider all mass squares relative to m 2 ( a 0 ) all contributions are contained in the last three terms composing V (2) , which we denote by ∆ m 2 …”

Section: Mass Square Patterns For the Scalar Nonetmentioning

confidence: 99%

Identification of the glueballs and the scalar meson nonet of lowest mass

Minkowski

Ochs

1999

Eur. Phys. J. C

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We discuss the theoretical expectations and phenomenological evidence for the lightest glueballs and the members of the meson nonet with quantum numbers J P C = 0 ++ . We reconsider the recent evidence for candidate states with masses below ∼1700 MeV, but include also the results from earlier phase-shift analyses. Arguments are presented to classify the scalars f 0 (980) and f 0 (1500) as members of the 0 ++ nonet, with a mixing rather similar to that of the pseudoscalars η and η. The S-wave states called f 0 (400 − 1200) and f 0 (1370) are considered as different signals from a single broad resonance, which we take to be the lowest-lying 0 ++ glueball. This state together with η(1440) and f J (1710) with spin J = 2 form the basic triplet of binary gluonic bound states. We argue that these hypotheses are consistent with what can be expected theoretically.

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“…The experimental and theoretical efforts (see Refs. [7][8][9][10] and refs. therein) in searching for (predominantly) glueball states represent important steps towards a better understanding of the non-perturbative behaviour of QCD.…”

Section: Introductionmentioning

confidence: 99%

Decay modes of the excited pseudoscalar glueball

Eshraim

Schramm

2017

Phys. Rev. D

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We study three different chiral Lagrangians that describe the two-and three-body decays of an excited pseudoscalar glueball, J P C = 0 * −+ , into light mesons and charmonium states as well as into a scalar and pseudoscalar glueball. We compute the decay channels for an excited pseudoscalar glueball with a mass of 3.7 GeV and consider a ground state pseudoscalar glueball of mass 2.6 GeV, following predictions from lattice QCD simulations. These states and channels are in reach of the ongoing BESIII experiment and the PANDA experiments at the upcoming FAIR facility experiment. We present the resulting decay branching ratios with a parameter-free prediction.

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Gluonic hadrons

Cited by 168 publications

References 113 publications

Isf0(1710)a glueball?

Isf0(1710)a glueball?

Identification of the glueballs and the scalar meson nonet of lowest mass

Decay modes of the excited pseudoscalar glueball

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