Analysing the charged scalar boson contribution to the charged-current BB meson anomalies

Experimental measurements collected by the BABAR, Belle, and LHCb experiments on different observables associated with the semileptonic transition $b \to c \tau \bar{\nu}_\tau$, indicate the existence of disagreement respect with the Standard Model predictions. We analyse the charged scalar boson contributions to these charged-current $B$ meson anomalies within the framework of two Higgs doublet model with the most general Yukawa couplings to quarks and leptons from the third generation, involving left-handed and right-handed (sterile) neutrinos. We perform a phenomenological study of the Yukawa couplings parameter space that accommodates these anomalies. We consider the most recent data from HFLAV world-average and Belle combination, and the upper limits ${\rm BR}(B_c^- \to \tau^- \bar{\nu}_{\tau}) < 30\%$ and $10\%$. In addition, we include in our study the prospect measurements on $R(D^{(\ast)})$ that the Belle II experiment could achieve and explore, for the first time, the future implications for the corresponding charged scalar Yukawa couplings. This analysis updates the existing literature and includes new important observables. Our results show that current experimental $b\rightarrow c \tau \bar{\nu}_\tau$ data and Belle II projection favor the interpretation of a charged scalar boson interacting with right-handed neutrinos. Furthermore, as a side analysis regarding the charged scalar boson interpretation, we revisit the relation between $R(D^\ast)$ and ${\rm BR}(B_c^- \to \tau^- \bar{\nu}_{\tau})$ by investigating whether the claim that pseudoscalar new physics interpretations of $R(D^{\ast})$ are implausible due to the $B_c$ lifetime is still valid, to the light of the recent data and Belle II prospects on $R(D^{\ast})$. Lastly, we reexamine addressing the $R(D^{(\ast)})$ anomalies in the context of the 2HDM of Type II.Comment: 20 pages, 5 figures (14 plots), 7 Tables. V3: typos corrected, discussion improve

Analisa Perbandingan Quality Of Service (QoS) pada Jaringan Backbone Non-MPLS dengan Jaringan Backbone MPLS Menggunakan Routing Protocol OSPF di PT. Telekomunikasi Indonesia, Tbk. Witel Ridar Riau

The development of telecommunications technology based on Internet Protocol (IP) is now growing with the competitiveness of the telecommunications company to improve the quality of service to consumers. It can be obtained by increasing the quality backbone network using Multi Protocol Label Switching (MPLS). MPLS is a new technology to forward the packet to the backbone network without changing the existing network structure. The main idea is to construct a replacement MPLS paths using label switching and distribute traffic into it. This paper compare the Qualty of Service (QoS) on Non-MPLS backbone network to MPLS backbone network with OSPF routing protocol on the PT. Telecommunication Indonesia, Tbk. Witel Ridar Riau. The Software simulation using Graphical Network Simulator (GNS3) is analyze by observing QoS are delay, packet loss, throughput, and jitter with Wireshark. In this research, there are two scenarios that will be analyzed. The first scenarios analyze the customer site make deliveries to one another customer site and the second scenarios analyze two customer sites make deliveries to the customer site simultaneously. The results show that the highest delay in the first scenario is better MPLS backbone network at 0.029999 s and 0.0124 s in the second scenario than Non-MPLS backbone network. It Followed by the highest value of packet loss on the network backbone MPLS and non-MPLS are equal 0% and in the second scenario, MPLS is better 0% than non-MPLS. The Throughput has same trend with the highest value in the first scenario MPLS backbone network is better 0.0085 Mbps and 0011 Mbps in the second scenario than Non-MPLS backbone network. Meanwhile the highest jitter values in the first scenario MPLS backbone network is better too at 0.3595995 s and 1.544403 s on the second scenario than the non-MPLS

How are visual words represented? Insights from EEG-based visual word decoding, feature derivation and image reconstruction

Issue Online: 23 October 2019Investigations into the neural basis of reading have shed light on the cortical locus and the functional role of visual-orthographic processing. Yet, the fine-grained structure of neural representations subserving reading remains to be clarified. Here, we capitalize on the spatiotemporal structure of electroencephalography (EEG) data to examine if and how EEG patterns can serve to decode and reconstruct the internal representation of visually presented words in healthy adults. Our results show that word classification and image reconstruction were accurate well above chance, that their temporal profile exhibited an early onset, soon after 100 ms, and peaked around 170 ms. Further, reconstruction results were well explained by a combination of visual-orthographic word properties. Last, systematic individual differences were detected in orthographic representations across participants. Collectively, our results establish the feasibility of EEG-based word decoding and image reconstruction. More generally, they help to elucidate the specific features, dynamics, and neurocomputational principles underlying word recognition.This research was supported by the Natural Sciences and Engineering Research Council of Canada (to A.N., A.C.H.L., and B. C. A.)