Higgs boson decay in the large N limit

• Autor(a) principal: Morales,John
• Data de Publicação: 2005
• Outros Autores: Martinez,R., Hurtado,Rafael, Diaz,Rodolfo A.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Journal of Physics
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332005000400003

The Equivalence Theorem is commonly used to calculate perturbatively amplitudes involving gauge bosons at energy scales higher than gauge boson masses. However, when the scalar sector is strongly interacting the theory is non-perturbative. We show that the Equivalence Theorem holds in the large N limit at next-to-leading order by calculating the decay widths h -> W+W- and h <FONT FACE=Symbol>® p</FONT>+pi-. We also show, in the same scheme of calculations, that unitarity is fulfilled for the process h <FONT FACE=Symbol>® p</FONT>+pi-.