دورية أكاديمية
Four-pomeron vertex
العنوان: | Four-pomeron vertex |
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المؤلفون: | M. A. Braun |
المصدر: | European Physical Journal C: Particles and Fields, Vol 81, Iss 12, Pp 1-15 (2021) |
بيانات النشر: | SpringerOpen, 2021. |
سنة النشر: | 2021 |
المجموعة: | LCC:Astrophysics LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
مصطلحات موضوعية: | Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
الوصف: | Abstract The four-pomeron vertex is studied in the perturbative QCD. Its dominating terms of the leading (zeroth and first) orders in the coupling constant and subdominant in the number of colors are constructed. The vertex consists of two terms, one with a derivative in rapidity $$\partial _y$$ ∂ y and the other with the BFKL interaction between pomerons. The corresponding part of the action and equations of motion are found. The iterative solution of the latter is possible only for rapidities smaller than 2 and quite large coupling constant $$\alpha _s$$ α s , of the order or greater than unity, when the quadruple pomeron interaction is relatively small. Also iteration of the part with $$\partial _y$$ ∂ y is unstable in the infrared region and compels to introduce an infrared cut. The variational approach with simple trying functions allows to find the minimum of the action at $$\alpha _s$$ α s of the order 0.2 and rapidities up to 25. Numerical estimates for O–O collisions show that actually the influence of the quadruple pomeron interaction turns out to be rather small. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1434-6044 1434-6052 |
Relation: | https://doaj.org/toc/1434-6044; https://doaj.org/toc/1434-6052 |
DOI: | 10.1140/epjc/s10052-021-09861-8 |
URL الوصول: | https://doaj.org/article/ce147a8ccd9d499a9019c257ab106766 |
رقم الأكسشن: | edsdoj.147a8ccd9d499a9019c257ab106766 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 14346044 14346052 |
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DOI: | 10.1140/epjc/s10052-021-09861-8 |