کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8195187 | 1528911 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nâ and Îâ decays into NÏ0Ï0
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Decays of baryon resonances in the second and the third resonance region into NÏ0Ï0 are studied by photoproduction of two neutral pions off protons. Partial decay widths of Nâ and Îâ resonances decaying into Î(1232)Ï, N(ÏÏ)S, N(1440)P11Ï, and N(1520)D13Ï are determined in a partial wave analysis of this data and of data from other reactions. Several partial decay widths were not known before. Interesting decay patterns are observed which are not even qualitatively reproduced by quark model calculations. In the second resonance region, decays into Î(1232)Ï dominate clearly. The N(ÏÏ)S-wave provides a significant contribution to the cross section, especially in the third resonance region. The P13(1720) properties found here are at clear variance to PDG values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 659, Issues 1â2, 17 January 2008, Pages 87-93
Journal: Physics Letters B - Volume 659, Issues 1â2, 17 January 2008, Pages 87-93
نویسندگان
CB-ELSA Collaboration CB-ELSA Collaboration, U. Thoma, M. Fuchs, A.V. Anisovich, G. Anton, R. Bantes, O. Bartholomy, R. Beck, Yu. Beloglazov, V. Crede, A. Ehmanns, J. Ernst, I. Fabry, H. Flemming, A. Fösel, Chr. Funke, R. Gothe, A. Gridnev,