Low-energy effects of charged Higgs bosons with general Yukawa couplings

Low-energy effects of charged Higgs bosons with general Yukawa couplings

We study a model with two Higgs doublets where FCNC`s are allowed at the tree level. In this model, the interactions of charged Higgs bosons with fermions ({ital H}{sup {plus_minus}}{ital f{bar f}}{prime}) include a term that is not proportional to the fermion masses, which we constrain using the fo...

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Veröffentlicht in:Physical Review, D D, 1995-05, Vol.51 (9), p.5263-5270, Article 5263
Hauptverfasser: Diaz Cruz, J. L., Godina Nava, J. J., Lopez Castro, G.
Format: Artikel
Sprache:eng
Schlagworte:
BEAUTY PARTICLES
CHARGED PARTICLES
CHARM PARTICLES
FERMIONS
HIGGS BOSONS
KAONS
LEPTONIC DECAY
LIFETIME
MASS
NEUTRONS
PHYSICS
PIONS
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
TAU PARTICLES
YUKAWA POTENTIAL
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container_end_page 5270
container_issue 9
container_start_page 5263
container_title Physical Review, D
container_volume 51
creator Diaz Cruz, J. L.
Godina Nava, J. J.
Lopez Castro, G.
description We study a model with two Higgs doublets where FCNC`s are allowed at the tree level. In this model, the interactions of charged Higgs bosons with fermions ({ital H}{sup {plus_minus}}{ital f{bar f}}{prime}) include a term that is not proportional to the fermion masses, which we constrain using the following low-energy processes: (i) {tau} decays ({tau}{r_arrow}{nu}{sub {tau}}{ital e}{nu}{sub {ital e}},{nu}{sub {tau}}{mu}{nu}{sub {mu}},{nu}{sub {tau}}{pi}), (ii) leptonic decays of pseudoscalar mesons ({pi},{ital K}{r_arrow}{ital l}{nu}{sub {ital l}}), and (iii) semileptonic {ital b} decays. With these constraints it is possible to make predictions; we illustrate this by presenting the rates for the (FCNC) decay {ital c}{r_arrow}{ital u}+{gamma}, the (second class-current) decay {tau}{r_arrow}{nu}{sub {tau}}+{eta}{pi}, and also the theoretical value of the neutron lifetime.
doi_str_mv 10.1103/PhysRevD.51.5263
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source American Physical Society Journals
subjects BEAUTY PARTICLES
CHARGED PARTICLES
CHARM PARTICLES
FERMIONS
HIGGS BOSONS
KAONS
LEPTONIC DECAY
LIFETIME
MASS
NEUTRONS
PHYSICS
PIONS
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
TAU PARTICLES
YUKAWA POTENTIAL
title Low-energy effects of charged Higgs bosons with general Yukawa couplings
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