Resonant diphoton phenomenology simplified

open3noA framework is proposed to describe resonant diphoton phenomenology at hadron colliders in full generality. It can be employed for a comprehensive model-independent interpretation of the experimental data. Within the general framework, few benchmark scenarios are defined as representative of the various phenomenological options and/or of motivated new physics scenarios. Their usage is illustrated by performing a characterization of the 750 GeV excess, based on a recast of available experimental results. We also perform an assessment of which properties of the resonance could be inferred, after discovery, by a careful experimental study of the diphoton distributions. These include the spin J of the new particle and its dominant production mode. Partial information on its CP-parity can also be obtained, but only for J ≥ 2. The complete determination of the resonance CP properties requires studying the pattern of the initial state radiation that accompanies the resonant diphoton production.openPanico, Giuliano; Vecchi, Luca; Wulzer, AndreaPanico, Giuliano; Vecchi, Luca; Wulzer, Andre

Current transport properties and phase diagram of a Kitaev chain with long-range pairing

We describe a method to probe the quantum phase transition between the short-range topological phase and the long-range topological phase in the superconducting Kitaev chain with long-range pairing, both exhibiting subgap modes localized at the edges. The method relies on the effects of the finite mass of the subgap edge modes in the long-range regime (which survives in the thermodynamic limit) on the single-particle scattering coefficients through the chain connected to two normal leads. Specifically, we show that, when the leads are biased at a voltage V with respect to the superconducting chain, the Fano factor is either zero (in the short-range correlated phase) or 2e (in the long-range correlated phase). As a result, we find that the Fano factor works as a directly measurable quantity to probe the quantum phase transition between the two phases. In addition, we note a remarkable "critical fractionalization effect" in the Fano factor, which is exactly equal to e along the quantum critical line. Finally, we note that a dual implementation of our proposed device makes it suitable as a generator of large-distance entangled two-particle states.Comment: 24 pages, 8 .eps figures Published versio

Ingroup/outgroup dynamics and agency markers in Italian parliamentary language. A gender-based socio-psychological analysis of the speeches of men and women deputies (2001 and 2006).

The most recent literature on gender differences in language use has shown that the Italian political communication enacted by men and women parliamentarians only partly reflects and reproduces the asymmetries and stereotypes widespread in society. Starting from an anti-essentialist perspective, which holds that language differences between men and women speakers are much less extensive than claimed in the past, we analysed 463 parliamentary speeches in the course of the XIVth legislature (5-2001 / 4-2006) in four parliamentarian pairs, differentiated by gender and political orientation. The general aim was to explore the socio-psychological constructs of agency and ingroup/outgroup dynamics as revealed by linguistic behaviour in men/women parliamentarians. The two constructs were detected by specific linguistic markers in the interventions of men/women parliamentarian pairs. Specifically, for agency, we detected: (1a) pronoun variations between singular and plural first person (I, we); (1b) amplitude of we as either specific or superordinate; (1c) conditional modal form of verbs. For ingroup/outgroup dynamics, we detected: (2a) pronoun variation between first and second plural person (we vs. you) and (2b) their valence. Lexicographical analysis was carried out with statistical packages TaLTaC2 and TreeTagger on a corpus of 432,671 words. Chi-square and z-test were applied to word frequencies, while Student’s t-tests were applied to gender comparisons. The results showed reduced variability between men/women parliamentarians in the use of linguistic devices, confirming the weakness of the essentialist and binary logic that has long dominated the field of studies on language and gender

Robo-ethics design approach for cultural heritage: Case study - Robotics for museum purpose

The thesis shows the study behind the design process and the realization of the robotic solution for museum purposes called Virgil. The research started with the literature review on museums management and the critic analysis of signi cant digital experiences in the museum eld. Then, it continues analyzing the museum and its relation with the territory and the cultural heritage. From this preliminary analysis stage, signi cant issue related to museum management analysis comes out: nowadays many museum areas are not accessible to visitors because of issues related to security or architectural barriers. Make explorable these areas is one of the important topics in the cultural debate related to the visiting experience. This rst stage gave the knowledge to develop the outlines which brought to the realization of an ef cient service design then realized following robot ethical design values. One of the pillars of the robot ethical design is the necessity to involve all the stakeholders in the early project phases, for this reason, the second stage of the research was the study of the empathic relations between museum and visitors. In this phase, facilitator factors of this relation are de ned and transformed into guidelines for the product system performances. To perform this stage, it has been necessary create a relation between all the stakeholders of the project, which are: Politecnico di Torino, Tim (Telecom Italia Mobile) JOL CRAB research laboratory and Terre dei Savoia which is the association in charge of the Racconiggi’s Castle, the context scenario of the research. The third stage of the research, provided the realization of a prototype of the robot, in this stage telepresence robot piloted the Museum Guide it is used to show, in real time, the inaccessible areas of the museum enriched with multimedia contents. This stage concludes with the nal test user, from the test session feedback analysis, many of people want to drive themselves the robot. To give an answer to user feedback an interactive game has been developed. The game is based both on the robot ability to be driven by the visitors and also on the capacity of the robot to be used as a platform for the digital telling. To be effective, the whole experience it has been designed and tested with the support of high school students, which are one of the categories less interested in the traditional museum visit. This experience wants to demonstrate that the conscious and ethical use of the robotic device is effectively competitive, in term of performances, with the other solutions of digital visit: because it allows a more interactive digital experience in addition to the satisfaction of the physical visit at the museum

Astrophysical code migration into Exascale Era

The ExaNeSt and EuroExa H2020 EU-funded projects aim to design and develop an exascale ready computing platform prototype based on low-energy-consumption ARM64 cores and FPGA accelerators. We participate in the application-driven design of the hardware solutions and prototype validation. To carry on this work we are using, among others, Hy-Nbody, a state-of-the-art direct N-body code. Core algorithms of Hy-Nbody have been improved in such a way to increasingly fit them to the exascale target platform. Waiting for the ExaNest prototype release, we are performing tests and code tuning operations on an ARM64 SoC facility: a SLURM managed HPC cluster based on 64-bit ARMv8 Cortex-A72/Cortex-A53 core design and powered by a Mali-T864 embedded GPU. In parallel, we are porting a kernel of Hy-Nbody on FPGA aiming to test and compare the performance-per-watt of our algorithms on different platforms. In this paper we describe how we re-engineered the application and we show first results on ARM SoC.Comment: 4 pages, 1 figure, 1 table; proceedings of ADASS XXVIII, accepted by ASP Conference Serie

STS-EPR: Modelling individual mobility considering the spatial, temporal, and social dimensions together

Abstract Modelling human mobility is crucial in several scientific areas, from urban planning to epidemic modeling, traffic forecasting, and what-if analysis. On the one hand, existing models focus on the spatial and temporal dimensions of mobility only, while the social dimension is often neglected. On other hand, models that embed a social mechanism have trivial or unrealistic spatial and temporal mechanisms. We propose STS-EPR, a mechanistic model that captures the spatial, temporal, and social dimensions of human mobility together. Our results show that STS-EPR generates realistic trajectories, making it better than models that lack either in the social, the spatial, or the temporal mechanisms. STS-EPR is a step towards the design of mechanistic models that can capture all the aspects of human mobility in a comprehensive way

Inside the secret garden of political parties. Transformations and reactions to primary elections in Italy and France

Primary elections are becoming quite spread within no-US political context. Many political parties in different countries choose to adopt such inclusive methods to select their candidates for general elections. Thus, primary elections have been re-adapted to different political systems, in order to fit with different party’s specific features. This implied a re-definition of the very concept of primary both in terms of procedures and in terms of political meaning. This paper aims to understand the promotion of party primaries in two EU countries: Italy and France. The two countries have implemented open primaries adopting the maximum level of inclusiveness. This paper will focus on the public debate about these two case studies in order to clarify which were the meaning and the political value of the primary contests in 2011 (France) and 2012 (Italy)

Fire design in safety engineering: likely fire curve for people’s safety

The present study analyses fire design settings according to Fire Safety Engineering (FSE) for the simulation of fire in civil activities and compares these simulations developed using natural and analytic fire curves. The simulated Heat Rate Release (HRR) curve, appropriately linearized, allows for the estimation of a Likely Fire Curve (LFC). The analytic curves have been introduced for the purpose of evaluating the strength and integrity of the structure, and the adoption of these curves in the fire safety engineering was made following the assumption that the phenomena of major intensity ensure the safe approach of fire design. This argument describes the method adopted for determining a likely fire model that guarantees a greater adherence of the virtualized phenomenon with respect to the potential event. The study showed that the analytic curve, adopted in order to verify the structural strength, in the beginning phases of fire produces fields of temperature and toxic concentrations lower than those obtained by simulation of the Likely Fire Curve. The assumption of the Likely Fire Curve model safeguards exposed people during self-rescue and emergency procedure. The programs used since 2011 for the simulation are FDS (Fire Dynamic Simulator v. 5.4.3) and Smokeview (5.4.8). Comparative analysis was developed using thermo-fluid dynamic parameters (temperature and heat release rate) relevant to the safety of the exposed persons; the case study focuses on children and employees of the nursery. The main result shows that the safety criterion, implicitly included in the analytical fire curves - normally used for fire resistance - doesn’t have the same applicability of a performance based approach on safety evaluation involving people. This paper shows that the Likely Fire Curve assumption involves a thermo-chemical stress more relevant to assessing the safety of exposed people

An Evaluation of the Reliability, Validity and Sensitivity of Three Human Mental Workload Measures Under Different Instructional Conditions in Third-Level Education

Although Cognitive Load Theory (CLT) has been researched for many years, it has been criticised for its theoretical clarity and its methodological approach. A crucial issue is the measurement of three types of cognitive load conceived in the theory, and the assessment of overall human cognitive load during learning tasks. This research study is motivated by these issues and it aims to investigate the reliability, validity and sensitivity of three existing self-reporting mental workload instruments, mainly used in Ergonomics, when applied to Education and in particular to the field of Teaching and Learning. A primary research study has been designed and performed in a typical third-level classroom in Computer Science, and the self-reporting mental workload instruments employed are the NASA Task Load Index, the Workload Profile and the Rating Scale Mental Effort. Three instructional design conditions have been designed and employed for the above purposes. The first design condition followed the traditional explicit instruction paradigm whereby a lecturer delivers instructional material mainly using a one-way approach with almost no interactions with students. The second design condition was inspired by the Cognitive Theory of Multimedia Learning whereby the same content, delivered under the first condition, was converted in a multimedia video by following a set of its design principles. The third design condition was an extension of the second condition whereby an inquiry activity was executed after the delivery of the second condition. The empirical evidence gathered in this study suggests that the three selected mental workload measures are highly reliable. Their moderate face validity is in line with the results obtained so far within Ergonomics emphasising and confirming the difficulty in creating optimally valid measures of mental workload. However, the sensitivity of these measures, as achieved in this study, is low, indicating how the three instructional design conditions, as conceived and implemented, do not impose significantly different mental workload levels on learners