69 research outputs found
Minimal Super Technicolor
We introduce novel extensions of the Standard Model featuring a
supersymmetric technicolor sector. First we consider N=4 Super Yang-Mills which
breaks to N=1 via the electroweak (EW) interactions and coupling to the MSSM.
This is a well defined, economical and calculable extension of the SM involving
the smallest number of fields. It constitutes an explicit example of a natural
supersymmetric conformal extension of the Standard Model featuring a well
defined connection to string theory. It allows to interpolate, depending on how
we break the underlying supersymmetry, between unparticle physics and Minimal
Walking Technicolor. As a second alternative we consider other N =1 extensions
of the Minimal Walking Technicolor model. The new models allow all the standard
model matter fields to acquire a mass.Comment: Improved version demonstrating that this extension is
phenomenologically viable. No Landau pole exists in the theory to two loops
level. This is the first theory showing that supersymmetry can solve the
flavor problem when coupled to low energy technicolo
Thermodynamics of Quasi Conformal Theories From Gauge/Gravity Duality
We use gauge/gravity duality to study the thermodynamics of a generic almost
conformal theory, specified by its beta function. Three different phases are
identified, a high temperature phase of massless partons, an intermediate
quasi-conformal phase and a low temperature confining phase. The limit of a
theory with infrared fixed point, in which the coupling does not run to
infinity, is also studied. The transitions between the phases are of first
order or continuous, depending on the parameters of the beta function. The
results presented follow from gauge/gravity duality; no specific boundary
theory is assumed, only its beta function.Comment: 17 pages, 13 figures
Ascite pancreática: tratamento com octreotide: relato de caso = Pancreatic ascites: treatment with octreotide: Case report
Introdução: Ascite pancreática é uma condição rara, com menos de 250 casos publicados. É definida como ascite exsudativa causada por doença pancreática não-maligna, tendo como características laboratoriais diagnósticas elevadas concentrações de amilase (geralmente > 1. 000 UI/L) e de proteína (> 3,0 g/dl) no líquido ascítico. O objetivo deste trabalho é descrever a evolução de um caso de ascite pancreática, destacando o tratamento proposto
Descrição do caso: Paciente masculino, 37 anos, com diagnóstico prévio de pancreatite crônica internou com queixa de dor abdominal. Ao exame físico, apresentava ascite, a qual foi puncionada, evidenciando proteínas totais de 4,2 g/dl e amilase 11. 457 UI/L. Iniciou-se o tratamento para ascite pancreática com nutrição parenteral total e octreotide, sendo este mantido por 28 dias. O paciente evoluiu com redução progressiva da ascite e sem dor abdominal, mantendo-se assintomático em revisão ambulatorial de 3 e 6 meses
Comentários: O tratamento da ascite pancreática é ainda controverso. Divide-se basicamente em conservador e intervencionista, sendo este último subdividido em tratamento endoscópico e cirúrgico. Apesar do sucesso do tratamento com octreotide no caso relatado, e diante de poucas e controversas evidências na literatura, um número maior de pacientes é necessário para determinar o melhor tratamento para ascite pancreática, permanecendo este motivo de debat
Superweakly interacting dark matter from the Minimal Walking Technicolor
We study a superweakly interacting dark matter particle motivated by minimal
walking technicolor theories. Our WIMP is a mixture of a sterile state and a
state with the charges of a standard model fourth family neutrino. We show that
the model can give the right amount of dark matter over a range of the WIMP
mass and mixing angle. We compute bounds on the model parameters from the
current accelerator data including the oblique corrections to the precision
electroweak parameters, as well as from cryogenic experiments, Super-Kamiokande
and from the IceCube experiment. We show that consistent dark matter solutions
exist which satisfy all current constraints. However, almost the entire
parameter range of the model lies within the the combined reach of the next
generation experiments.Comment: 29 pages, 6 figure
Technicolor and Beyond: Unification in Theory Space
The salient features of models of dynamical electroweak symmetry breaking are
reviewed. The ideal walking idea is introduced according to which one should
carefully take into account the effects of the extended technicolor dynamics on
the technicolor dynamics itself. The effects amount at the enhancement of the
anomalous dimension of the mass of the techniquarks allowing to decouple the
Flavor Changing Neutral Currents problem from the one of the generation of the
top mass. Precision data constraints are reviewed focussing on the latest
crucial observation that the S-parameter can be computed exactly near the upper
end of the conformal window (Conformal S-parameter) with relevant consequences
on the selection of nature's next strong force. We will then introduce the
Minimal Walking Technicolor (MWT) models. In the second part of this review we
consider the interesting possibility to marry supersymmetry and technicolor.
The reason is to provide a unification of different extensions of the standard
model. For example, this means that one can recover, according to the
parameters and spectrum of the theory distinct extensions of the standard
model, from supersymmetry to technicolor and unparticle physiscs. A surprising
result is that a minimal (in terms of the smallest number of fields)
supersymmetrization of the MWT model leads to the maximal supersymmetry in four
dimensions, i.e. N=4 SYM.Comment: Extended version of the PASCOS10 proceedings for the Plenary Tal
Distinguishing among Technicolor/Warped Scenarios in Dileptons
Models of dynamical electroweak symmetry breaking usually include new spin-1
resonances, whose couplings and masses have to satisfy electroweak precision
tests. We propose to use dilepton searches to probe the underlying structure
responsible for satisfying these. Using the invariant mass spectrum and charge
asymmetry, we can determine the number, parity, and isospin of these
resonances. We pick three models of strong/warped symmetry breaking, and show
that each model produces specific features that reflect this underlying
structure of electroweak symmetry breaking and cancellations.Comment: Added missing referenc
Unnatural Origin of Fermion Masses for Technicolor
We explore the scenario in which the breaking of the electroweak symmetry is
due to the simultaneous presence and interplay of a dynamical sector and an
unnatural elementary Higgs. We introduce a low energy effective Lagrangian and
constrain the various couplings via direct search limits and electroweak and
flavor precision tests. We find that the model we study is a viable model of
dynamical breaking of the electroweak symmetry.Comment: 20 pages, 7 eps figure
The hArtes Tool Chain
This chapter describes the different design steps needed to go from legacy code to a transformed application that can be efficiently mapped on the hArtes platform
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