1/2+ uudds_ pentaquark and instanton-induced forces

[en] The mass of the 1/2+ uudds_ pentaquark is calculated within the framework of a semirelativistic effective Hamiltonian approach to QCD with instanton-induced forces, using a diquark picture. This approximation allows a correct treatment of the confinement, assumed here to be a Y-junction. With the [ud] diquark mass fitted on the Lambda-baryon, the ground-state pentaquark is found around 2.2 GeV.

Disciplines :

Physics

Author, co-author :

Semay, Claude

Silvestre-Brac, B.

Language :

English

Title :

1/2+ uudds_ pentaquark and instanton-induced forces

Publication date :

19 October 2004

Journal title :

European Physical Journal. A, Hadrons and Nuclei

ISSN :

1434-6001

Publisher :

Springer, Germany

Volume :

Pages :

1-3

Peer reviewed :

Peer Reviewed verified by ORBi

Research unit :

S824 - Physique nucléaire et subnucléaire

Research institute :

R150 - Institut de Recherche sur les Systèmes Complexes

Commentary :

Letter

Available on ORBi UMONS :

since 04 January 2011

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Bibliography

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