Strong and radiative decays of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msubsup><mml:mi>D</mml:mi><mml:mrow><mml:mi>s</mml:mi><mml:mn>0</mml:mn></mml:mrow><mml:mo>*</mml:mo></mml:msubsup><mml:mo stretchy="false">(</mml:mo><mml:mn>2317</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math>meson in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi><mml:mi>K</mml:mi></mml:math>-molecule picture

Faessler, Amand; Gutsche, Thomas; Lyubovitskij, Valery E.; Ma, Yong-Liang

doi:10.1103/physrevd.76.014005

Cited by 183 publications

(93 citation statements)

References 95 publications

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“…[14], which shows that the branching fraction of π 0 D − s is in a range of 93-100%. In the future, with more data accumulated at BESIII or with a fine scan from PANDA [31], the width of D …”

Section: Summary and Discussionmentioning

confidence: 89%

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Measurement of the absolute branching fraction of Ds0(2317)±→
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2018
Phys. Rev. D*
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Section: Summary and Discussionmentioning

confidence: 89%

“…The only known decay is the isospin-violating mode π 0 D − s , and no branching fraction or partial width of this mode has been measured. Theoretical calculations give different values for the partial decay width ΓðD [13][14][15][16]. The partial width ΓðD Ã s0 ð2317Þ − → π 0 D − s Þ is around 30 keV or even as low as a few keV if the D…”

mentioning

confidence: 99%

Measurement of the absolute branching fraction of Ds0(2317)±→
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2018
Phys. Rev. D*
15
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2
0
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“…Tetraquark states have however a common problem: many more states are predicted than found experimentally. The molecular picture is supported by calculations of strong D * s0 to D s 0 and radiative D * s0 to D * s decays [865] and the leptonic decay constants f D * s0 and f D s1 [866]. Alternatively, the states can be understood as being generated from the scattering ofK off D(1867) and D * (2008) mesons [867].…”

Section: S Mesonsmentioning

confidence: 99%

Glueballs, hybrids, multiquarks

2007

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Glueballs, hybrids and multiquark states are predicted as bound states in models guided by quantum chromo dynamics (QCD), by QCD sum rules or QCD on a lattice. Estimates for the (scalar) glueball ground state are in the mass range from 1000 to 1800 MeV, followed by a tensor and a pseudoscalar glueball at higher mass. Experiments have reported evidence for an abundance of meson resonances with 0 −+ , 0 ++ and 2 ++ quantum numbers. In particular, the sector of scalar mesons is full of surprises starting from the elusive and mesons. The a 0 (980) and f 0 (980), discussed extensively in the literature, are reviewed with emphasis on their Janus-like appearance as KK molecules, tetraquark states or qq mesons. Most exciting is the possibility that the three mesons f 0 (1370), f 0 (1500), and f 0 (1710) might reflect the appearance of a scalar glueball in the world of quarkonia. However, the existence of f 0 (1370) is not beyond doubt and there is evidence that both f 0 (1500) and f 0 (1710) are flavour octet states, possibly in a tetraquark composition. We suggest a scheme in which the scalar glueball is dissolved into the wide background into which all scalar flavour-singlet mesons collapse.There is an abundance of meson resonances with the quantum numbers of the . Three states are reported below 1.5 GeV/c 2 whereas quark models expect only one, perhaps two. One of these states, (1440), was the prime glueball candidate for a long time. We show that (1440) is the first radial excitation of the meson.Hybrids may have exotic quantum numbers which are not accessible by qq mesons. There are several claims for J P C = 1 −+ exotics, some of them with properties as predicted from the flux tube model interpreting the quark-antiquark binding by a gluon string. The evidence for these states depends partly on the assumption that meson-meson interactions are dominated by s-channel resonances. Hybrids with non-exotic quantum numbers should appear as additional states. Light-quark mesons exhibit a spectrum of (squared) masses which are proportional to the sum of orbital angular momentum and radial quantum numbers. Two states do not fall under this classification. They are discussed as hybrid candidates.The concept of multiquark states has received revived interest due to new resonances in the spectrum of states with open and hidden charm. The new states are surprisingly narrow and their masses and their decay modes often do not agree with simple quark-model expectations.Lattice gauge theories have made strong claims that glueballs and hybrids should appear in the meson spectrum. However, the existence of a scalar glueball, at least with a reasonable width, is highly questionable. It is possible that hybrids will turn up in complex multibody final states even though so far, no convincing case has been made for them by experimental data. Lattice gauge theories fail to identify the nonet of scalar mesons. Thus, at the present status of approximations, lattice gauge theories seem not to provide a trustworthy guide into unknown territory ...

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“…Although radiative decays are suppressed due to the strength of the interaction particular final states such as J=ψπ þ γ are relatively easy to identify experimentally. The analysis is based on a phenomenological Lagrangian approach [12][13][14] together with the compositeness condition [15][16][17], which is a powerful tool to formulate hadrons as bound states of their constituents using methods of quantum field theory.…”

Section: Introductionmentioning

confidence: 99%

Radiative and dilepton decays of the hadronic moleculeZc+(3900)

2014

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Strong and radiative decays of theDs0*(2317)meson in theDK-molecule picture

Cited by 183 publications

References 95 publications

Measurement of the absolute branching fraction of Ds0(2317)±→
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2018
Phys. Rev. D*
15
1
2
0
View full text Add to dashboard Cite

Measurement of the absolute branching fraction of Ds0(2317)±→
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2018
Phys. Rev. D*
15
1
2
0
View full text Add to dashboard Cite

Glueballs, hybrids, multiquarks

Radiative and dilepton decays of the hadronic moleculeZc+(3900)

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Strong and radiative decays of theDs0*(2317)meson in theDK-molecule picture

Cited by 183 publications

References 95 publications

Measurement of the absolute branching fraction of Ds0*(2317)±→Ablikim1, Ачасов2, Ahmed3 et al. 2018Phys. Rev. D15120View full textAdd to dashboardCite

Measurement of the absolute branching fraction of Ds0*(2317)±→Ablikim1, Ачасов2, Ahmed3 et al. 2018Phys. Rev. D15120View full textAdd to dashboardCite

Glueballs, hybrids, multiquarks

Radiative and dilepton decays of the hadronic moleculeZc+(3900)

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Measurement of the absolute branching fraction of Ds0(2317)±→
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2018
Phys. Rev. D*
15
1
2
0
View full text Add to dashboard Cite

Measurement of the absolute branching fraction of Ds0(2317)±→
Ablikim¹,
Ачасов²,
Ahmed³
et al. 2018
Phys. Rev. D*
15
1
2
0
View full text Add to dashboard Cite