50,144 research outputs found
New Physics and novel Higgs signals
We review some of the results of our recent work dealing with the novel type
of Higgs signals that arise when one considers extensions of the standard
model.
We discuss first possible deviations on the Higgs couplings due to heavy
particles, in the context of the MSSM and with large extra-dimensions. Then, we
present several models where it is possible to induce flavor violating Higgs
couplings, and probe them at future hadron colliders through the LFV Higgs
decay h-> tau mu or with rare top decays.Comment: Talk given at the X Mexican School of Particles and Fields, Playa del
Carmen, Mexico, 200
FCNC and non-standard soft-breaking terms in weak-scale Supersymmetry
We study the inclusion of non-standard soft-breaking terms in the minimal
SUSY extension of the SM, considering it as a model of weak-scale SUSY. These
terms modify the sfermion mass matrices, which can induce new sources of
flavour violation. Bounds on the new soft parameters can be estimated from
current data. The results are then applied to evaluate FCNC top decay t -> c +
hi (hi= h,H,A). Implications of complex soft parameters for CP violation are
also addressed.Comment: Revised version (8 pages), title changed and references corrected.
Presented at VIII Mexican Workshop on Particles and Fields, Merida (1999
Spontaneous Symmetry Breaking in Tensor Theories
In this work we study spontaneous symmetry breaking patterns in tensor
models. We focus on the patterns which lead to effective matrix theories
transforming in the adjoint of . We find the explicit form of the
Goldstone bosons which are organized as matrix multiplets in the effective
theory. The choice of these symmetry breaking patterns is motivated by the fact
that, in some contexts, matrix theories are dual to gravity theories. Based on
this, we aim to build a bridge between tensor theories, quantum gravity and
holography.Comment: 40 pp, 1 fig. Update to match the published versio
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