Guises and disguises of quadratic divergences |
| |
Authors: | AL Cherchiglia AR Vieira Brigitte Hiller AP Baêta Scarpelli Marcos Sampaio |
| |
Institution: | 1. Departamento de Física, ICEx, Universidade Federal de Minas Gerais, P.O. BOX 702, 30.161-970, Belo Horizonte, MG, Brazil;2. Departamento de Física, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, 3004-516 Coimbra, Portugal;3. Centre for Particle Theory, Department of Mathematical Sciences, Durham University, South Road Durham DH1 3LE, UK;4. Setor Técnico-Científico, Departamento de Polícia Federal, Rua Hugo D’Antola, 95 - Lapa, São Paulo, Brazil |
| |
Abstract: | In this contribution, we present a new perspective on the control of quadratic divergences in quantum field theory, in general, and in the Higgs naturalness problem, in particular. Our discussion is essentially based on an approach where UV divergences are parameterized, after being reduced to basic divergent integrals (BDI) in one internal momentum, as functions of a cutoff and a renormalization group scale λ. We illustrate our proposal with well-known examples, such as the gluon vacuum self energy of QCD and the Higgs decay in two photons within this approach. We also discuss frameworks in effective low-energy QCD models, where quadratic divergences are indeed fundamental. |
| |
Keywords: | Renormalization Standard-model Higgs boson Nambu&ndash Jona-Lasinio model |
本文献已被 ScienceDirect 等数据库收录! |
|