期刊
PHYSICS LETTERS B
卷 749, 期 -, 页码 454-457出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2015.08.032
关键词
Exotic baryons; Pentaquarks; Diquarks
资金
- National Science Foundation [PHY-1068286, PHY-1403891]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1403891] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1068286] Funding Source: National Science Foundation
Starting with the dynamical picture of the exotic c (c) over bar -containing states XYZ as the confinement-induced hadronization of a rapidly separating pair of a compact diquark and antidiquark, we describe the pentaquark candidates P-c(+) (4380) and P-c(+) (4450) in terms of a confined but rapidly separating colorantitriplet diquark cuand color-triplet triquark (c) over bar (ud). This separation explains the relatively small P-c(+) widths, despite these 5-quark systems lying far above both the J/psi p and Lambda(c)(D) over bar (()*()0) thresholds. The P-c(+) states are predicted to form isospin doublets with neutral partners P-c(0). (C) 2015 The Author. Published by Elsevier B.V.
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