Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-03-28
Phys.Rev. D74 (2006) 054019
Physics
High Energy Physics
High Energy Physics - Phenomenology
28 pages, 15 figures; typo corrected and few comments added
Scientific paper
10.1103/PhysRevD.74.054019
Recently, Diakonov and Petrov have suggested a formalism in the Relativistic Mean Field Approximation allowing one to derive the 3-, 5-, 7-,... quark wavefunctions for the octet, decuplet and antidecuplet. They have used this formalism and many strong approximations in order to estimate the exotic Theta+ width. The latter has been estimated to ~4 MeV. Besides they obtained that the 5-quark component of the nucleon is about 50% of its 3-quark component meaning that relativistic effects are not small. We have improved the technique by taking into account some relativistic corrections and considering the previously neglected 5-quark exchange diagrams. We also have computed all nucleon axial charges. It turns out that exchange diagrams affect very little Diakonov's and Petrov's results while relativistic corrections reduce the Theta+ width to ~2 MeV and the 5- to 3-quark component of the nucleon ratio to 30%.
No associations
LandOfFree
Improvement of the Theta+ width estimation method on the Light Cone does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Improvement of the Theta+ width estimation method on the Light Cone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improvement of the Theta+ width estimation method on the Light Cone will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-463461