The pentaquark candidates in the dynamical diquark picture

Richard Lebed

doi:10.1016/j.physletb.2015.08.032

The pentaquark candidates in the dynamical diquark picture

Richard Lebed

Physics

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

198 Scopus citations

Abstract

Starting with the dynamical picture of the exotic cc--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 color-antitriplet diquark cu and color-triplet "triquark" c-(ud). This separation explains the relatively small P_c⁺ widths, despite these 5-quark systems lying far above both the J/ψ p and Λ_c^D-(*)0 thresholds. The P_c⁺ states are predicted to form isospin doublets with neutral partners P_c⁰.

Original language	English (US)
Pages (from-to)	454-457
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	749
DOIs	https://doi.org/10.1016/j.physletb.2015.08.032
State	Published - Oct 7 2015

Keywords

Diquarks
Exotic baryons
Pentaquarks

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2015.08.032

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title = "The pentaquark candidates in the dynamical diquark picture",

abstract = "Starting with the dynamical picture of the exotic cc--containing states XYZ as the confinement-induced hadronization of a rapidly separating pair of a compact diquark and antidiquark, we describe the pentaquark candidates Pc+(4380) and Pc+(4450) in terms of a confined but rapidly separating color-antitriplet diquark cu and color-triplet {"}triquark{"} c-(ud). This separation explains the relatively small Pc+ widths, despite these 5-quark systems lying far above both the J/ψ p and ΛcD-(*)0 thresholds. The Pc+ states are predicted to form isospin doublets with neutral partners Pc0.",

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AB - Starting with the dynamical picture of the exotic cc--containing states XYZ as the confinement-induced hadronization of a rapidly separating pair of a compact diquark and antidiquark, we describe the pentaquark candidates Pc+(4380) and Pc+(4450) in terms of a confined but rapidly separating color-antitriplet diquark cu and color-triplet "triquark" c-(ud). This separation explains the relatively small Pc+ widths, despite these 5-quark systems lying far above both the J/ψ p and ΛcD-(*)0 thresholds. The Pc+ states are predicted to form isospin doublets with neutral partners Pc0.

KW - Diquarks

KW - Exotic baryons

KW - Pentaquarks

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

The pentaquark candidates in the dynamical diquark picture

Abstract

Keywords

ASJC Scopus subject areas

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