Lattice study of the exotic S = +1 baryon

Shoichi Sasaki

doi:10.1103/PhysRevLett.93.152001

Lattice study of the exotic S = +1 baryon

Shoichi Sasaki

Research output: Contribution to journal › Article › peer-review

96 Citations (Scopus)

Abstract

S = +1 baryon interpolating operators were proposed, which are based on a exotic description of the antidecuplet bayron, like the diquark-diquark- antiquark structure. The mass spectrum of the spin-1/2 pentaquark states was calculated by using the operator. It was observed that the J^p assignment of the θ state was most like (1/2)^-. The mass of the charm analog of the θ was also calculated and the θ state lies much higher than the DN threshold.

Original language	English
Article number	152001
Pages (from-to)	152001-1-152001-4
Journal	Physical review letters
Volume	93
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.93.152001
Publication status	Published - 2004 Oct 8
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Lattice study of the exotic S = +1 baryon",

abstract = "S = +1 baryon interpolating operators were proposed, which are based on a exotic description of the antidecuplet bayron, like the diquark-diquark- antiquark structure. The mass spectrum of the spin-1/2 pentaquark states was calculated by using the operator. It was observed that the Jp assignment of the θ state was most like (1/2)-. The mass of the charm analog of the θ was also calculated and the θ state lies much higher than the DN threshold.",

author = "Shoichi Sasaki",

note = "Funding Information: It is a pleasure to acknowledge A. Hosaka, T. Nakano and L. Glozman for useful comments. I would also like to thank T. Doi, M. Oka, and T. Hatsuda for fruitful discussions on the subject to determine the parity of the Θ state, and S. Ohta for helpful suggestions and his careful reading of the manuscript. This work is supported by the Supercomputer Project No. 102 (FY2003) of the High Energy Accelerator Research Organization (KEK) and JSPS Grant-in-Aid for Encouragement of Young Scientists (No. 15740137).",

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