2,075 research outputs found
Colored bosons on top FBA and angular cross section for production
With full data set that corresponds to an integrated luminosity of 9.4
fb, CDF has updated the top quark forward-backward asymmetry (FBA) as
functions of rapidity difference and invariant mass
. Beside the sustained inconsistency between experiments and
standard model (SM) predictions at large and , an
unexpected large first Legendre moment with is found. In
order to solve the large top FBA, we study the contributions of color triplet
scalar and color octet vector boson. We find that the top FBA at and GeV in triplet and octet model could be enhanced to
be around 30% and 20%, whereas the first Legendre moment is and , respectively.Comment: 13 pages, 5 figures; references adde
Improving lifecycle query in integrated toolchains using linked data and MQTT-based data warehousing
The development of increasingly complex IoT systems requires large
engineering environments. These environments generally consist of tools from
different vendors and are not necessarily integrated well with each other. In
order to automate various analyses, queries across resources from multiple
tools have to be executed in parallel to the engineering activities. In this
paper, we identify the necessary requirements on such a query capability and
evaluate different architectures according to these requirements. We propose an
improved lifecycle query architecture, which builds upon the existing Tracked
Resource Set (TRS) protocol, and complements it with the MQTT messaging
protocol in order to allow the data in the warehouse to be kept updated in
real-time. As part of the case study focusing on the development of an IoT
automated warehouse, this architecture was implemented for a toolchain
integrated using RESTful microservices and linked data.Comment: 12 pages, worksho
Skew-product for group-valued edge labellings of Bratteli diagrams
We associate a Cantor dynamical system to a non-properly ordered Bratteli diagram. Group valued edge labellings λ of a Bratteli diagram B give rise to a skew-product Bratteli diagram B(λ) on which the group acts. The quotient by the group action of the associated dynamics can be a nontrivial extension of the dynamics of B. We exhibit a Bratteli diagram for this quotient and con- struct a morphism to B with unique path lifting property. This is shown to be an isomorphism for the dynamics if a property "loops lifting to loops" is satisfied by B(λ) --> B
Stability of Sasaki-extremal metrics under complex deformations
We consider the stability of Sasaki-extremal metrics under deformations of
the complex structure on the Reeb foliation. Given such a deformation
preserving the action of a compact subgroup of the automorphism group of a
Sasaki-extremal structure, a sufficient condition is given involving the
nondegeneracy of the relative Futaki invariant for the deformations to contain
Sasaki-extremal structures.
Deformations of Sasaki-Einstein metrics are also considered, where it
suffices that the deformation preserve a maximal torus. As an application, new
families of Sasaki-Einstein and Sasaki-extremal metrics are given on
deformations of well known 3-Sasaki 7-manifolds.Comment: Added the obstruction to the existence of Sasaki structures under
transversal complex deformations. 30 pages and 1 figur
The K-group of substitutional systems
In another article we associated a dynamical system to a non- properly ordered Bratteli diagram. In this article we describe how to compute the K-group K0 of the dynamical system in terms of the Bratteli diagram. In the case of properly ordered Bratteli diagrams this description coincides with what is already known, namely the so-called dimension group of the Bratteli diagram. The new group defined here is more relevant for non-properly ordered Bratteli diagrams. We use our main result to describe K0 of a substitutional system
Finitness of the basic intersection cohomology of a Killing foliation
We prove that the basic intersection cohomology where is the singular
foliation determined by an isometric action of a Lie group on the compact
manifold , is finite dimensional
Deformations des feuilletages transversalement holomorphes a type differentiable fixe
Let F be a transversely holomorphic foliation on a compact manifold. We show the existence of a versal space for those deformations of F which keep fixed its differentiable type if F is hermitian or if F has complex codimension one and admits a transverse projectable connection. We also prove the existence of a versal space of deformations for the complex structures on a Lie group invariant by a cocompact subgroup
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