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
Arquivos
Data
2014-04-11
Autores
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Acesso 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.