Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/63308
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Type: Journal article
Title: Faddeev calculation of the pentaquark Θ⁺ in the Nambu–Jona-Lasinio model-based diquark picture
Other Titles: Faddeev calculation of the pentaquark Theta+ in the Nambu-Jona-Lasinio model-based diquark picture
Author: Mineo, H.
Tjon, J.
Tsushima, K.
Yang, S.
Citation: Physical Review C, 2008; 77(5):1-12
Publisher: American Physical Soc
Issue Date: 2008
ISSN: 0556-2813
1089-490X
Statement of
Responsibility: 
H. Mineo, J. A. Tjon, K. Tsushima and Shin Nan Yang
Abstract: A Bethe-Salpeter-Faddeev (BSF) calculation is performed for the pentaquark Θ+ in the diquark picture of Jaffe and Wilczek in which Θ+ is a diquark-diquark-s̅ three-body system. The Nambu–Jona-Lasinio (NJL) model is used to calculate the lowest order diagrams in the two-body scatterings of s̅ D and DD. With the use of coupling constants determined from the meson sector, we find that s̅ D interaction is attractive in s-wave while the DD interaction is repulsive in the p-wave. With only the lowest three-body channel considered, we do not find a bound 1/2+ pentaquark state. Instead, a bound pentaquark Θ+ with 1/2- is obtained with unphysically strong vector mesonic coupling constants.
Rights: ©2008 American Physical Society
RMID: 0020104635
DOI: 10.1103/PhysRevC.77.055203
Appears in Collections:Physics publications

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