Colored bosons on top FBA and angular cross section for ttˉt \bar t production

With full data set that corresponds to an integrated luminosity of 9.4 fb$^{-1}$, CDF has updated the top quark forward-backward asymmetry (FBA) as functions of rapidity difference $|\Delta y|$ and $t\bar t$ invariant mass $M_{t\bar t}$. Beside the sustained inconsistency between experiments and standard model (SM) predictions at large $|\Delta y|$ and $M_{t\bar t}$, an unexpected large first Legendre moment with $a_1= 0.39\pm 0.108$ 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 $|\Delta y| >1$ and $M_{t\bar t} > 450$ GeV in triplet and octet model could be enhanced to be around 30% and 20%, whereas the first Legendre moment is $a^{\bf Di}_1= 0.38$ and $a^{\bf Axi}_1= 0.23$, 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

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

Finitness of the basic intersection cohomology of a Killing foliation

We prove that the basic intersection cohomology ${I H}^{^{*}}_{_{\bar{p}}}{(M/\mathcal{F})},$ where $\mathcal{F}$ is the singular foliation determined by an isometric action of a Lie group $G$ on the compact manifold $M$, is finite dimensional

The relation of Maslama al-Maŷrīṭī with the books Rasāʼil Ijwān al-Ṣafā’, Risālat al-ŷāmi‘a, Rutbat al-ḥakīm and Gāyat al-ḥakīm

Algunas fuentes afirman que Abū al-Ḥakam al-Kirmānī (m. 458/1066) fue el primero que introdujo las Rasā’il Ijwān al-Ṣafā’ en al-Andalus. Sin embargo, otros investigadores piensan que su introducción se debería atribuir a su maestro Maslama al-Maŷrīṭī (398/1007). Por otro lado, ciertas fuentes y varios manuscritos atribuyen la enciclopedia y la Risālat al-ŷāmi‘a a Maslama al-Maŷrīṭī. La autoría de estas dos obras ha de ser puesta en relación con la Rutbat al-ḥakīm y la Gāyat al-ḥakīm; obras que la mayoría de los estudios han identificado como anónimas. En este trabajo aportamos nuevos datos sobre estas cuestiones.Some sources affirm that Abū al-Ḥakam al-Kirmānī (d. 458/1066) was the first who brought Rasā’il Ijwān al-Ṣafā’ in al-Andalus. However, some researchers think that Maslama al-Maŷrīṭī (d. 398/1007) is the one who brought it in first. Furthermore, other sources and many manuscripts ascribe the encyclopedia and the Risālat al-ŷāmi‘a to al-Maŷrīṭī. Apparently, this attribution is related to Rutbat al- ḥakīm and Gāyat al-ḥakīm. These works have been considered anonymous according to the majority of studies. Throughout this study, we will provide new data about these issues