کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8183843 | 1527110 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A narrow quasi-bound state of the DNN system
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A narrow quasi-bound state of the DNN system A narrow quasi-bound state of the DNN system](/preview/png/8183843.png)
چکیده انگلیسی
We have investigated a charmed system of DNN (composed of two nucleons and a D meson) by a complementary study with a variational calculation and a Faddeev calculation with fixed-center approximation (Faddeev-FCA). In the present study, we employ a DN potential based on a vector-meson exchange picture in which a resonant Îc(2595) is dynamically generated as a DN quasi-bound state, similarly to the Î(1405) as a K¯N one in the strange sector. As a result of the study of variational calculation with an effective DN potential and three kinds of NN potentials, the DNN(JÏ=0â,I=1/2) is found to be a narrow quasi-bound state below Îc(2595)N threshold: total binding energy â¼225MeV and mesonic decay width â¼25MeV. On the other hand, the JÏ=1â state is considered to be a scattering state of Îc(2595) and a nucleon. These results are essentially supported by the Faddeev-FCA calculation. By the analysis of the variational wave function, we have found a unique structure in the DNN(JÏ=0â,I=1/2) such that the D meson stays around the center of the total system due to the heaviness of the D meson.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics A - Volume 914, 20 September 2013, Pages 499-504
Journal: Nuclear Physics A - Volume 914, 20 September 2013, Pages 499-504
نویسندگان
A. Doté, M. Bayar, C.W. Xiao, T. Hyodo, M. Oka, E. Oset,