Stringent limits on top-quark compositeness from t t ̄ production at the Tevatron and the lhc stringent limits on top-quark compositeness ⋯ M. fabbrichesi, M. pinamonti, and A. tonero

Imagem de Miniatura

Data

2014-04-11

Orientador

Coorientador

Pós-graduação

Curso de graduação

Título da Revista

ISSN da Revista

Título de Volume

Editor

Tipo

Artigo

Direito de acesso

Acesso abertoAcesso Aberto

Resumo

If the top quark is a composite state made out of some constituents, then its interaction with the gluon will be modified. We introduce the leading effective operators that contribute to the radius and anomalous magnetic moment of the top quark and study their effect on the cross section for tt̄ production at the Tevatron and the LHC. Current measurements of the cross sections set a stringent limit on the scale of compositeness. This limit is comparable to similar limits obtained for light quarks and those from electroweak precision measurements. It can be used to constrain the parameter space of some composite Higgs models. © 2014 American Physical Society.

Descrição

Palavras-chave

Idioma

Inglês

Como citar

Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 89, n. 7, 2014.

Itens relacionados

Financiadores