This note presents selected measurements of W and Z boson production, carried out with the CMS experiment at the LHC, based on samples of events collected during 2015-2018 physics runs. W boson ...events were selected containing an isolated, energetic electron or muon, while Z boson events were selected containing a pair of isolated, energetic electrons or muons. Presented results include searches for rare decays of W bosons to pions.
State-of-the-art theoretical predictions accurate to next-to-leading order QCD interfaced with {\sc pythia} and {\sc herwig} are tested by comparing the unfolded \(t\bar{t}\) differential data ...collected with the CMS detector at 8 TeV and 13 TeV. These predictions are also compared with the measurements of underlying event activity distributions accompanying \({\rm t\bar{t}}\) events. Furthermore, predictions of beyond NLO accuracy in QCD are compared with the data.
The measurement of differential cross section of a Z boson produced in association with jets is presented. The cross section is presented with respect to various jet kinematic variables where the Z ...bosons are reconstructed from opposite sign lepton pairs. The analysis is based on data of proton proton collisions with the centre of mass energy of 8 TeV collected in 2012 by the CMS experiment at LHC corresponding to 19.8 /fb of integrated luminosity. Obtained results are compared with different generators and are shown to be consistent with the Standard Model predictions.
Measurements of Vector Boson production in association with jets are presented, using p-p collision data at sqrt{s} = 7 TeV. The measurements presented include Z + jets azimuthal correlations, event ...shapes, vector boson + jets differential cross section measurements, hard double-parton scattering using W + jets events and electroweak Z + forward - backward jet production.
A group of Early-Career Researchers (ECRs) has been given a mandate from the European Committee for Future Accelerators (ECFA) to debate the topics of the current European Strategy Update (ESU) for ...Particle Physics and to summarise the outcome in a brief document 1. A full-day debate with 180 delegates was held at CERN, followed by a survey collecting quantitative input. During the debate, the ECRs discussed future colliders in terms of the physics prospects, their implications for accelerator and detector technology as well as computing and software. The discussion was organised into several topic areas. From these areas two common themes were particularly highlighted by the ECRs: sociological and human aspects; and issues of the environmental impact and sustainability of our research.
This paper investigates macroeconomic effects of fiscal decentralization, which has been a neglected area of research. Panel evidence for 16 countries over 1980–1998 indicates that expenditure and ...revenue decentralization reduce budget deficits. A principal finding is that the fiscal disciplining effect of fiscal decentralization increases with population size. Interestingly, absence of local elections is associated with greater effectiveness of fiscal decentralization. The benefits of expenditure decentralization decrease with ethnolinguistic fractionalization and quality of governance.
This article discusses results of a study on turn taking behavior in escorting children in dual-earner households. Using a multinomial logit model, the probability of different turn taking routines ...in escorting children is analyzed as a function of age and gender of the children, personal and household characteristics of the parents, properties of the job, and day of the week. Two types of turn taking behavior are examined. The first concerns routines in which during a single day one of the parents drops off the child and the other parent picks up the children again after completing the concerned activity (school, day care, outdoor activity). The second concerns routines in which one of the parents takes full responsibility and commits to all escorting duties on a particular day and the other parent does the same on another day of the week. Results, based on a sample of dual-earner households, indicate that turn taking represents a substantial, yet smaller share of escorting activities. The propensity of turn taking behavior is higher for highly educated, high-income dual-earner households. Fathers show the tendency of dropping off the children in the morning. Mothers tend to take responsibility for more flexible escorting needs.
•The novel Eco-CACC scheme combines both advantages of eco-driving and platooning.•Excellent energy and car-following performance for the CAV platoon.•CAV platoon can pass the continuous signalized ...intersections without separation.•The favorable improvement of calculation speed using a modified DP algorithm.
Vehicle driving patterns greatly impact the sustainability of the transportation system. Based on V2X communication, the ecological cooperative adaptive cruise control (Eco-CACC) is proposed combing the advantages of eco-driving and car-following to minimize the energy consumption of the connected automated vehicles platoon. Herein, the vehicle platoon behavior in the scenario of driving through a signalized intersection exhibits great benefits for sustainability which is even improved along corridors with more traffic lights. In the velocity trajectory planning process, a modified dynamic programming algorithm is formulated with the switching logic gate of two types of optimal control problems to increase the computational speed. By testing in the real-world scenario, the results of the proposed Eco-CACC demonstrate excellent energy performance which improves 8.02% compared to manual driving with the constant acceleration policy. Moreover, energy can be further improved by 2.02% and 1.55% when the car-following strategy is selected with MPC and IDM algorithm.
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