Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9861424 | Physics Letters B | 2005 | 6 Pages |
Abstract
We construct a chiral Lagrangian for pentaquark baryons assuming that the recently found Î+(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 ÏâpâKâÎ+ and γnâKâÎ+ 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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
P. Ko, Jungil Lee, Taekoon Lee, Jae-Hyeon Park,