کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10726435 | 1035927 | 2005 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A unitary and analytic model of nucleon EM structure, the puzzle of JLab proton polarization data and new insight into the proton charge distribution
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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
The unitary and analytic model of nucleon electromagnetic structure, describing all existing nucleon form factor data, is briefly reviewed. Then in the framework of this model the problem of inconsistency of older proton electric form factor data in a space-like region (obtained from the eâpâeâp process by the Rosenbluth technique) with recent Jefferson Lab data on the ratio GEp(t)/GMp(t) (measured in a precise polarization eââpâeâpâ experiment) is suggested to be solved in favor of the latter data which, however, unlike older data imply the existence of a form factor zero, i.e. a diffraction minimum in |GEp(t)| around t=âQ2=â13GeV2. The new behavior of GEp(t) with the zero gives a modified proton charge distribution with an enlarged value of the mean square charge radius.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Particle and Nuclear Physics - Volume 55, Issue 1, July 2005, Pages 228-241
Journal: Progress in Particle and Nuclear Physics - Volume 55, Issue 1, July 2005, Pages 228-241
نویسندگان
C. AdamuÅ¡ÄÃn, S. DubniÄka, A.Z. DubniÄková, P. Weisenpacher,