14 research outputs found
Comment on "The Phenomenology of a Nonstandard Higgs Boson in W_L W_L Scattering"
We show that in Composite Higgs models, the coupling of the Higgs resonance
to a pair of bosons is weaker than the corresponding Standard Model
coupling, provided the Higgs arises from electroweak doublets only. This is
partly due to the effects of the nonlinear realization of the chiral symmetries
at the compositeness scale.Comment: 6 pages, BU-HEP 94-2
The Phenomenology of a Hidden Symmetry Breaking Sector
We calculate the production rate of gauge-boson pairs at the SSC in a model
with a ``hidden'' electroweak symmetry breaking sector. We show that the signal
of electroweak symmetry breaking is lower than the background and that we
cannot necessarily rely on gauge boson pairs as a signal of the dynamics of
symmetry breaking.Comment: harvmac, 8 pages (4 figures), BUHEP-92-23 new version corrects error
in figure
Flavor-Changing Neutral Current Constraints in Topcolor-Assisted Technicolor
It is argued that the topcolor models recently proposed by Hill [1] may face
significant constraints from flavor-changing neutral current processes (such as
mixing) unless the mixing angles between down-type quarks are
small. The flavor-changing processes are mediated by scalar bound states which
are likely to be light as a result of the near critical dynamics of the
-quark sector. The consequences of the latter on the bottom quark mass are
also briefly discussed.Comment: 11 pages, plain LaTe
Triviality Bounds in Two-Doublet Models
We examine perturbatively the two-Higgs-doublet extension of the \SM\ in the
context of the suspected triviality of theories with fundamental scalars.
Requiring the model to define a consistent effective theory for scales below a
cutoff of times the largest mass of the problem, as motivated by lattice
investigations of the one-Higgs-doublet model, we obtain combined bounds for
the parameters of the model. We find upper limits of 470 GeV for the mass of
the light --even neutral scalar and 650--700 GeV for the other scalar
masses.Comment: 15 pages (8 postscript figures in two files), BUHEP-93-
The profile of a nonstandard Higgs boson at the LHC
In a wide class of extensions of the Standard Model there is a scalar
resonance with the quantum numbers of the usual Higgs boson but with different
couplings to fermions and gauge bosons. Using an effective Lagrangian
description, we examine the phenomenology of such a generic nonstandard Higgs
boson at the LHC. In particular, we determine the circumstances under which
such a particle can be observed in its decay mode and distinguished from
the Higgs boson of the Standard Model. We briefly comment on the energy scale
effectively probed at the LHC, if the nonstandard nature of an observed Higgs
particle can be asserted.Comment: 21 pages, Latex, no figure