کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8191065 | 1528862 | 2012 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Light-front projection of spin-1 electromagnetic current and zero-modes
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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: Light-front projection of spin-1 electromagnetic current and zero-modes Light-front projection of spin-1 electromagnetic current and zero-modes](/preview/png/8191065.png)
چکیده انگلیسی
The issue of the contribution of zero-modes to the light-front projection of the electromagnetic current of phenomenological models of vector particles vertices is addressed in the Drell-Yan frame. Our analytical model of the Bethe-Salpeter amplitude of a spin-1 fermion-antifermion composite state gives a physically motivated light-front wave function symmetric by the exchange of the fermion and antifermion, as in the Ï-meson case. We found that among the four independent matrix elements of the plus component in the light-front helicity basis only the 0â0 one carries zero-mode contributions. Our derivation generalizes to symmetric models, important for applications, the above conclusion found for a simplified non-symmetrical form of the spin-1 Bethe-Salpeter amplitude with photon-fermion point-like coupling and also for a smeared fermion-photon vertex model.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 708, Issues 1â2, 14 February 2012, Pages 87-92
Journal: Physics Letters B - Volume 708, Issues 1â2, 14 February 2012, Pages 87-92
نویسندگان
J.P.B.C. de Melo, T. Frederico,