کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1844547 1645182 2006 40 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Perturbatively stable resummed small x evolution kernels
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Perturbatively stable resummed small x evolution kernels
چکیده انگلیسی
We present a small x resummation for the GLAP anomalous dimension and its corresponding dual BFKL kernel, which includes all the available perturbative information and non-perturbative constraints. Specifically, it includes all the information coming from next-to-leading order GLAP anomalous dimensions and BFKL kernels, from the constraints of momentum conservation, from renormalization-group improvement of the running coupling and from gluon interchange symmetry. The ensuing evolution kernel has a uniformly stable perturbative expansion. It is very close to the unresummed NLO GLAP kernel in most of the HERA kinematic region, the small x BFKL behaviour being softened by momentum conservation and the running of the coupling. Next-to-leading corrections are small thanks to the constraint of gluon interchange symmetry. This result subsumes all previous resummations in that it combines optimally all the information contained in them.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Physics B - Volume 742, Issues 1–3, 15 May 2006, Pages 1-40
نویسندگان
, , ,