کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10726442 | 1035927 | 2005 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The Mainz A4 parity violation experiment (single spin asymmetries in elastic scattering)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The Mainz A4 parity violation experiment (single spin asymmetries in elastic scattering) The Mainz A4 parity violation experiment (single spin asymmetries in elastic scattering)](/preview/png/10726442.png)
چکیده انگلیسی
The A4 experiment at the MAMI facility in Mainz measures a parity violating single spin asymmetry in the scattering of longitudinally polarized electrons off unpolarized protons. The longitudinal single spin asymmetry is parity violating and arises from the interference of the weak and electromagnetic one-boson exchange amplitude. It is sensitive to the strangeness contribution to the electromagnetic form factors of the nucleon. Recently the transverse single spin asymmetry has gained much interest. It is purely electromagnetic in origin and arises from the interference of the one-photon with the two-photon exchange amplitude. It is a time-odd quantity and sensitive to the imaginary part of the two-photon amplitude only. The A4 collaboration has measured both asymmetries at two different momentum transfer values. The physical background, the experimental apparatus, the experimental results and the implications are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Particle and Nuclear Physics - Volume 55, Issue 1, July 2005, Pages 320-331
Journal: Progress in Particle and Nuclear Physics - Volume 55, Issue 1, July 2005, Pages 320-331
نویسندگان
F.E. Maas, for the A4-Collaboration for the A4-Collaboration,