Study for the Pentaquark Potential in SU(3) Lattice QCD

Okiharu, Fumiko; Suganuma, Hideo; Takahashi, Tôru

doi:10.1103/physrevlett.94.192001

Cited by 99 publications

(154 citation statements)

References 28 publications

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“…As shown in the lattice QCD calculation of Ref. [27], the confinement part of the potential for a three quark system is proportional to the minimal total length L min of the color flux tube linking the three quarks, and in fact one has 1…”

Section: Resultsmentioning

confidence: 99%

Hyperfine mixing in semileptonic decay of doubly heavy baryons

2010

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We qualitatively corroborate the results of W. Roberts and M. Pervin in Int. J. Mod. Phys. A 24, 2401 according to which hyperfine mixing greatly affects the decay widths of b → c semileptonic decays involving doubly heavy bc baryons. However, our predictions for the decay widths of the unmixed states differ from those reported in the work of Roberts and Pervin by a factor of 2, and this discrepancy translates to the mixed case. We further show that the predictions of heavy quark spin symmetry, might be used in the future to experimentally extract information on the admixtures in the actual physical bc baryons, in a model independent manner.

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Section: Resultsmentioning

confidence: 99%

Hyperfine mixing in semileptonic decay of doubly heavy baryons

2010

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“…On the other hand the Yukawa interaction should be tested in detailed future four-quark lattice calculations. Only recently we have become aware of a lattice study about the interaction of four-and five-quark systems [34,80].…”

Section: Summary and Discussionmentioning

confidence: 99%

“…Besides this, the system is still simple enough to be treated on the lattice. In fact there are lattice results for the four-particle system in SU(2) [33] and also in SU(3) [34]. Where possible, we will compare our results with those obtained on the lattice.…”

Section: Introductionmentioning

confidence: 95%

“…However, it should be noted that the parameters of our model used in this work are not adjusted to the 4-quark problem, but are fixed to the qq-properties only. In a very recent SU(3) lattice calculation of the 4-particle system [34] a multi-Y flux tube picture was proposed, such that the total string length is minimized. This is similar to the Y-like flux tube picture of the 3-quark system.…”

Section: Interaction Potentialsmentioning

confidence: 99%

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Interactions of multiquark states in the chromodielectric model

et al. 2006

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We investigate 4-quark (qqqq) systems as well as multi-quark states with a large number of quarks and anti-quarks using the chromodielectric model. In the former type of systems the flux distribution and the corresponding energy of such systems for planar and non-planar geometries are studied. From the comparison to the case of two independent qq-strings we deduce the interaction potential between two strings. We find an attraction between strings and a characteristic string flip if there are two degenerate string combinations between the four particles. The interaction shows no strong Van-der-Waals forces and the long range behavior of the potential is well described by a Yukawa potential, which might be confirmed in future lattice calculations. The multi-quark states develop an inhomogeneous porous structure even for particle densities large compared to nuclear matter constituent quark densities. We present first results of the dependence of the system on the particle density pointing towards a percolation type of transition from a hadronic matter phase to a quark matter phase. The critical energy density is found at εc = 1.2 GeV/fm 3 .

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“…From QCD, as well as ordinary mesons (qq) and baryons (qqq) in the valence picture, there can exist "exotic hadrons" [1] such as glueballs, multi-quarks [2,3] and hybrid hadrons, and the exotic-hadron physics has been an interesting field theoretically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Holographic QCD for H-dibaryon (uuddss)

Suganuma

Matsumoto

2017

EPJ Web Conf.

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Abstract. The H-dibaryon (uuddss) is studied in holographic QCD for the first time. In holographic QCD, four-dimensional QCD, i.e., SU(N c ) gauge theory with chiral quarks, can be formulated with S 1 -compactified D4/D8/D8-brane system. In holographic QCD with large N c , all the baryons appear as topological chiral solitons of Nambu-Goldstone bosons and (axial) vector mesons, and the H-dibaryon can be described as an SO(3)-type topological soliton with B = 2. We derive the low-energy effective theory to describe the H-dibaryon in holographic QCD. The H-dibaryon mass is found to be twice of the B = 1 hedgehog-baryon mass, M H ≃ 2.00M HH B=1 , and is estimated about 1.7GeV, which is smaller than mass of two nucleons (flavor-octet baryons), in the chiral limit.

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Study for the Pentaquark Potential in SU(3) Lattice QCD

Cited by 99 publications

References 28 publications

Hyperfine mixing in semileptonic decay of doubly heavy baryons

Hyperfine mixing in semileptonic decay of doubly heavy baryons

Interactions of multiquark states in the chromodielectric model

Holographic QCD for H-dibaryon (uuddss)

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