A diquark model for pentaquark baryons and tetraquark mesons

Kaushal, R. S.; Parashar, D.; Sisodiya, A K

doi:10.1016/j.physletb.2004.09.014

Cited by 2 publications

(1 citation statement)

References 32 publications

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“…Further, the diquark phase continues to be present in the plasma for large quark number density compared to those obtained in earlier works based on φ 4 -theory. It is needless to mention that in our calculations inter-diquark separation is considered to be larger than the size of the diquark [36].…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Diquark interactions in quark–gluon plasma and their role in diquark stars

Sisodiya

Kaushal

Parashar

et al. 2006

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

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Within the framework of the constituent quark model and a generalized Pauli principle, the diquark interaction energies in quark–gluon plasma are explicitly calculated. In particular, two-diquark interaction energies are computed using ϕ4-terms in the effective Lagrangian in the spirit of the Donoghue and Sateesh model (1988 Phys. Rev. D 38 360). We also account for the extended character of the diquark. These results are used to determine the coupling strengths for a variety of colour–spin two-diquark states. Equations of state for the diquark matter for a variety of cases are derived and subsequently the Tolman–Oppenheimer–Volkoff equations for the masses and radii of diquark stars are solved. In this work, we restrict ourselves to the study of only the non-strange version of diquarks.

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Section: Discussion Of Resultsmentioning

confidence: 99%

Diquark interactions in quark–gluon plasma and their role in diquark stars

Sisodiya

Kaushal

Parashar

et al. 2006

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

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Iterative method to compute the Fermat points and Fermat distances of multiquarks

Bicudo

Cardoso

2009

Physics Letters B

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The multiquark conning potential is proportional to the total distance of the fundamental strings linking the quarks and antiquarks. We address the computation of the total string distance an of the Fermat points where the dierent strings meet.For a meson (quark-antiquark system) the distance is trivially the quark-antiquark distance. For a baryon (three quark system) the problem was solved geometrically from the onset, by Fermat and by Torricelli. The geometrical solution can be determined just with a rule and a compass, but translation of the geometrical solution to an analytical expression is not as trivial. For tetraquarks, pentaquarks, hexaquarks, etc, the geometrical solution is much more complicated. Here we provide an iterative method, converging fast to the correct Fermat points and the total distances, relevant for the multiquark potentials. We also review briey the geometrical methods leading to the Fermat points and to the total distances.

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A diquark model for pentaquark baryons and tetraquark mesons

Cited by 2 publications

References 32 publications

Diquark interactions in quark–gluon plasma and their role in diquark stars

Diquark interactions in quark–gluon plasma and their role in diquark stars

Iterative method to compute the Fermat points and Fermat distances of multiquarks

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