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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Unitarity constraints on anomalous quartic couplings

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Autor(es):
Almeida, Eduardo da Silva [1] ; Eboli, O. J. P. [1] ; Gonzalez-Garcia, M. C. [2, 3]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil
[2] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 - USA
[3] Univ Barcelona, Dept Estruct & Constituents Mat, Inst Catalan Recerca & Estudis Avancats ICREA, 647 Diagonal, E-08028 Barcelona - Spain
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Physical Review D; v. 101, n. 11 JUN 26 2020.
Citações Web of Science: 0
Resumo

We obtain the partial-wave unitarity constraints on the lowest-dimension effective operators which generate anomalous quartic gauge couplings but leave the triple gauge couplings unaffected. We consider operator expansions with linear and nonlinear realizations of the electroweak symmetry and explore the multidimensional parameter space of the coefficients of the relevant operators: 18 dimension-eight operators in the linear expansion and 5 O(p(4)) operators in the derivative expansion. We study two-to-two scattering of electroweak gauge bosons and Higgs bosons, taking into account all coupled channels and all possible heicity amplitudes for the J = 0, 1 partial waves. In general, the bounds degrade by factors of a few when several operator coefficients arc considered to be nonvanishing simultaneously. However, this requires considering constraints from both J = 0 and J =1 partial waves for some sets of operators. (AU)

Processo FAPESP: 19/04837-9 - Fenomenologia de partículas
Beneficiário:Oscar José Pinto Eboli
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 18/16921-1 - Busca de nova Física no large hadron collider
Beneficiário:Eduardo da Silva Almeida
Linha de fomento: Bolsas no Brasil - Doutorado