Effective Lagrangian of the two Higgs doublet model


Autoria(s): Ciafaloni, P.; Espriu, D. (Domènec)
Contribuinte(s)

Universitat de Barcelona

Data(s)

11/05/2010

Resumo

We consider the two Higgs doublet model extension of the standard model in the limit where all physical scalar particles are very heavy, too heavy, in fact, to be experimentally produced in forthcoming experiments. The symmetry-breaking sector can thus be described by an effective chiral Lagrangian. We obtain the values of the coefficients of the O(p4) operators relevant to the oblique corrections and investigate to what extent some nondecoupling effects may remain at low energies. A comparison with recent CERN LEP data shows that this model is indistinguishable from the standard model with one doublet and with a heavy Higgs boson, unless the scalar mass splittings are large.

Identificador

http://hdl.handle.net/2445/12422

Idioma(s)

eng

Publicador

The American Physical Society

Direitos

(c) The American Physical Society, 1997

info:eu-repo/semantics/openAccess

Palavras-Chave #Partícules (Física nuclear) #Interaccions febles (Física nuclear) #Particles (Nuclear physics) #Weak interactions (Nuclear physics)
Tipo

info:eu-repo/semantics/article