The analysis of the system based on the diquark cluster model

Uehara, Yasushi; Konno, Norio; Nakamura, Hiroshi; Noya, H.

doi:10.1016/0375-9474(96)00171-6

Cited by 21 publications

(5 citation statements)

References 99 publications

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“…Exotic mesons -those whose valence structure is not composed of a quark-antiquark (qq) pair -have been discussed [1][2][3][4][5][6][7][8][9][10] for many years but have only recently been observed experimentally. The underlying structure of the observed exotic states at 1.4 GeV/c 2 decaying into ηπ − [11][12][13] and at 1.6 GeV/c 2 decaying into ρ 0 π − [14] is not yet understood.…”

Section: +0045mentioning

confidence: 99%

Observation of Exotic Meson Production in the Reactionπ−p→η′π
Иванов¹,
Stienike²,
Ryabchikov³
et al. 2001
Phys. Rev. Lett.
126
6
75
2
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An amplitude analysis of an exclusive sample of 5765 events from the reaction π − p → η ′ π − p at 18 GeV/c is described. The η ′ π − production is dominated by natural parity exchange and by three partial waves: those with J P C = 1 −+ , 2 ++ , and 4 ++ . A mass-dependent analysis of the partial-wave amplitudes indicates the production of the a2(1320) meson as well as the a4(2040) meson, observed for the first time decaying to η ′ π − . The dominant, exotic (non-qq) 1 −+ partial wave is shown to be resonant with a mass of 1.597 ± 0.0102 and a width of 0.340 ± 0.040 ± 0.050 GeV/c 2 . This exotic state, the π1(1600), is produced with a t dependence which is different from that of the a2(1320) meson, indicating differences between the production mechanisms for the two states.

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Section: +0045mentioning

confidence: 99%

Observation of Exotic Meson Production in the Reactionπ−p→η′π
Иванов¹,
Stienike²,
Ryabchikov³
et al. 2001
Phys. Rev. Lett.
126
6
75
2
View full text Add to dashboard Cite

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“…[27]. In the diquark cluster model [28], the mass and decay width of X( 1600) is studied together with other tetraquarks assuming the 3c color wave function for two quarks. Using the potential model X(1600) mass was estimated to be 1544 MeV recently [29].…”

Section: Discussionmentioning

confidence: 99%

Synthesis, monolayer fabrication and photoelectric conversion property of two pyrrolidinofullerene carboxylic acid derivatives1The work was mainly done in State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, P.R. China.1

Wei

Shi

Zhai

et al. 2000

Chemical Physics Letters

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“…Recently, Uehara et al [25] claim to calculate the masses of some exotic tetraquark mesons containing only u and d quarks without using any free parameters. However, they use a specific potential model and also use as input properties of dibaryon resonances that are not firmly established.…”

Section: Discussionmentioning

confidence: 99%

Predicting exotic hadron masses from supersymmetry and a quark - diquark model

Lichtenberg

Roncaglia

Predazzi

1997

J. Phys. G: Nucl. Part. Phys.

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Hadron supersymmetry is used to obtain estimates of the masses of some exotic hadrons within the framework of the constituent quark model. Supersymmetry breaking is explicitly taken into account. The exotic masses are predicted from the masses of ordinary mesons and baryons as input with no free parameters. Most of the predicted exotics lie well above threshold for strong decay into ordinary hadrons, and so will be difficult to observe. One of the unbound exotics is the so-called H dibaryon, composed of uuddss quarks. In the model a few exotics containing b quarks may be bound against strong decay and so decay weakly.

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The analysis of the system based on the diquark cluster model

Cited by 21 publications

References 99 publications

Observation of Exotic Meson Production in the Reactionπ−p→η′π
Иванов¹,
Stienike²,
Ryabchikov³
et al. 2001
Phys. Rev. Lett.
126
6
75
2
View full text Add to dashboard Cite

Observation of Exotic Meson Production in the Reactionπ−p→η′π
Иванов¹,
Stienike²,
Ryabchikov³
et al. 2001
Phys. Rev. Lett.
126
6
75
2
View full text Add to dashboard Cite

Synthesis, monolayer fabrication and photoelectric conversion property of two pyrrolidinofullerene carboxylic acid derivatives1The work was mainly done in State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, P.R. China.1

Predicting exotic hadron masses from supersymmetry and a quark - diquark model

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The analysis of the system based on the diquark cluster model

Cited by 21 publications

References 99 publications

Observation of Exotic Meson Production in the Reactionπ−p→η′πИванов1, Stienike2, Ryabchikov3 et al. 2001Phys. Rev. Lett.1266752View full textAdd to dashboardCite

Observation of Exotic Meson Production in the Reactionπ−p→η′πИванов1, Stienike2, Ryabchikov3 et al. 2001Phys. Rev. Lett.1266752View full textAdd to dashboardCite

Synthesis, monolayer fabrication and photoelectric conversion property of two pyrrolidinofullerene carboxylic acid derivatives1The work was mainly done in State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, P.R. China.1

Predicting exotic hadron masses from supersymmetry and a quark - diquark model

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Product

Resources

About

Observation of Exotic Meson Production in the Reactionπ−p→η′π
Иванов¹,
Stienike²,
Ryabchikov³
et al. 2001
Phys. Rev. Lett.
126
6
75
2
View full text Add to dashboard Cite

Observation of Exotic Meson Production in the Reactionπ−p→η′π
Иванов¹,
Stienike²,
Ryabchikov³
et al. 2001
Phys. Rev. Lett.
126
6
75
2
View full text Add to dashboard Cite