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Four-pomeron vertex

التفاصيل البيبلوغرافية
العنوان: Four-pomeron vertex
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
الوصف
تدمد:14346044
14346052
DOI:10.1140/epjc/s10052-021-09861-8