Scalar coupling evolution in a non-perturbative QCD resummation scheme

Autor(es)

Gomez, J. D. ^[1] ; Natale, A. A. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil

^[2] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters B; v. 747, p. 541-544, JUL 30 2015.
• Citações Web of Science: 3

Resumo

We compute the Standard Model scalar coupling (lambda) evolution in a particular QCD resummation scheme, where the QCD coupling becomes infrared finite due to the presence of a dynamically generated gluon mass, leading to the existence of a non-perturbative infrared fixed point. We discuss how this scheme can be fixed taking recourse to phenomenological considerations in the infrared region. The QCD beta function associated to this non-perturbative coupling when introduced into the SM renormalization group equations increases the lambda values at high energies. (C) 2015 The Authors. Published by Elsevier B.V. (AU)

• Processo FAPESP: 13/22079-8 - Física de partículas e campos: modelo padrão e suas extensões
• Beneficiário: Adriano Antonio Natale
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/24065-4 - Fenomenologia da interação forte
• Beneficiário: John David Gomez Aguirre
• Modalidade de apoio: Bolsas no Brasil - Doutorado