Some aspects on the structure and reaction of {theta}+

Journal Article · Thu Nov 02 00:00:00 EST 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2398856· OSTI ID:20891738

Hosaka, Atsushi ^[1]

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1. Research Center/or Nuclear Physics (RCNP), Osaka University, Ibaraki, 567-0047 (Japan)

In this report, we discuss some aspects of the present theoretical status of the pentaquarks. In the first part we discuss the importance of the pion interaction due to spontaneous symmetry breaking of chiral symmetry, which affects the basic property such as the parity of {theta}+. In the second part we show some calculations for the photoproduction of {theta}+ and {lambda}(1520) in the effective Lagrangian approach. Within the minimal setup of the model, we make comments in comparison with the present controversial experimental results.

• OSTI ID: 20891738
• Journal Information: AIP Conference Proceedings, Vol. 865, Issue 1; Conference: 6. China-Japan joint nuclear physics symposium, Shanghai (China), 16-20 May 2006; Other Information: DOI: 10.1063/1.2398856; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRAL SYMMETRY
LAGRANGIAN FUNCTION
LAMBDA-1520 BARYONS
PARITY
PHOTOPRODUCTION
PIONS
QUARKS
SYMMETRY BREAKING