Chiral perturbation theory for pentaquark baryons and its applications

P. Ko, Jungil Lee, Taekoon Lee, Jae Hyeon Park

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We construct a chiral Lagrangian for pentaquark baryons assuming that the recently found Θ+(1540) state belongs to an antidecuplet of SU(3) flavor symmetry with JP=12±. We derive the Gell-Mann-Okubo formulae for the antidecuplet baryon masses, and a possible mixing between the antidecuplet and the pentaquark octet. Then we calculate the cross sections for π-p→K-Θ+ and γn→K-Θ+ using our chiral Lagrangian. The resulting amplitudes respect the underlying chiral symmetry of QCD correctly. We also describe how to include the light vector mesons in the chiral Lagrangian.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume611
Issue number1-2
DOIs
Publication statusPublished - 2005 Mar 31

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baryons
perturbation theory
octets
symmetry
vector mesons
quantum chromodynamics
cross sections

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Chiral perturbation theory for pentaquark baryons and its applications. / Ko, P.; Lee, Jungil; Lee, Taekoon; Park, Jae Hyeon.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 611, No. 1-2, 31.03.2005, p. 87-92.

Research output: Contribution to journalArticle

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