A Faddeev calculation for Pentaquark O+ in Diquark Picture with Nambu-Jona-Lasinio Type interaction

Mineo, H.; Tjon, J.; Tsushima, K.; Yang, S.

Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/71230

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Type:	Conference paper
Title:	A Faddeev calculation for Pentaquark O+ in Diquark Picture with Nambu-Jona-Lasinio Type interaction
Author:	Mineo, H. Tjon, J. Tsushima, K. Yang, S.
Citation:	Progress of Theoretical Physics Supplement, 2007; 168:111-114
Publisher:	Oxford University Press (OUP)
Issue Date:	2006
ISSN:	0375-9687 1347-4081
Conference Name:	Yukawa International Seminar (2006 : Kyoto, Japan)
Statement of Responsibility:	H. Mineo, J. A. Tjon, Kazuo 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-s̄ three-body system. Nambu-Jona-Lasinio (NJL) model is used to calculate the lowest order diagrams in the two-body scatterings of s̄D and DD. With the use of coupling constants determined from the meson sector, we find that s̄D interaction is attractive while DD interaction is repulsive. However, we cannot find a bound 1/2+pentaquark state. Instead, a bound pentaquark Θ+ in 1/2- channel is obtained with unphysically strong vector mesonic coupling constants.
Description:	Proceedings of the Yukawa International Seminar 2006 (YKIS2006) / T. Kunihiro, H. En'yo, M. Harada, T. Hatsuda, A. Hosaka, D. Jido, Y. Kanada-En'yo, S.-H. Lee, A. Nakamura, T. Nakano, M. Oka and H. Suganuma (eds.)
Rights:	Copyright status unknown
DOI:	10.1143/PTPS.168.111
Published version:	http://dx.doi.org/10.1143/ptps.168.111
Appears in Collections:	Aurora harvest 5 Chemistry and Physics publications

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