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Higgs boson decay in the large N limit
Morales,John; Martinez,R.; Hurtado,Rafael; Diaz,Rodolfo A.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 ...
The process mu -> nue e$\bar{\nu}$mu in the 2HDM with flavor changing neutral c...
Diaz,Rodolfo A.; Martínez,R.; Poveda,NicanorWe consider the process m -> nue e$\bar{\nu}$mu in the framework of a two Higgs doublet model with flavor changing neutral currents (FCNC). Since FCNC generates in turn flavor changing charged currents in the lepton sector, this process appears at tree level mediated by a charged Higgs boson exchange. From the experimental upper limit for this decay, we obtain the bound |ximue/mH+| < 3.8 x 10-3 GeV-1, where xim...