Journal
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
Volume 2019, Issue 9, Pages -Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/ptep/ptz091
Keywords
-
Funding
- National Research Foundation of Korea - Ministry of Education, Science and Technology [NRF-2019R1A2C1010443, 2018R1A5A1025563]
Ask authors/readers for more resources
We investigate the strong and radiative decay widths of the narrow nucleon resonances N* (1685) and N* (1726) within the framework of the SU(3) chiral quark soliton model. All the relevant parameters are taken from those used to describe the properties of the baryon octet and decuplet in previous works. The masses of the antidecuplet nucleon and the eikosiheptaplet (27-plet) nucleon with spin 3/2 are determined respectively to be (1690.2 +/- 10.5) MeV and (1719.6 +/- 7.4) MeV. The decay width for N* (1685) -> eta + N is found to be approximately three times larger than that for N* (1685) -> pi + N. The width of the decay N* (1726) 3/2(+) -> eta + N is about 31 times larger than that of N* (1726) 3/2(+) -> pi + N. The ratio of the radiative decays for N* (1685) is obtained to be rim Gamma(nn*) (1685) / Gamma(pp*) (1685) = 8.62 +/- 3.45, which explains very well the neutron anomaly. In contrast, we find Gamma(pp*)(1726)/ Gamma(nn*) (1726) = 3.72 +/- 0.64, which indicates that the production of N* (1726) is more likely to be observed in the proton channel. We also examine the decay modes of these narrow nucleon resonances with the strangeness hadrons involved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available