331 models and bilepton searches at the LHC

Despite being remarkably predictive, the Standard Model leaves unanswered several important issues, which motivate an ongoing search for its extensions. One fashionable possibility are the so-called 331 models, where the electroweak gauge group is extended to SULð3Þ × Uð1Þ. We focus on a minimal extension which includes vectorlike quarks (VLQs) and new gauge bosons, performing a consistent analysis of the production at the LHC of a pair of doubly charged bileptons. We include for the first time all the relevant processes where VLQs contribute and, in particular, the associate production VLQ bilepton. Finally, we extract the bound on the bilepton mass, mY > 1300 GeV, from a reinterpretation of a recent ATLAS search for doubly charged Higgs bosons in multilepton final states

Machine Learning Models to Enhance the Berlin Questionnaire Detection of Obstructive Sleep Apnea in at-Risk Patients

The Berlin questionnaire (BQ), with its ten questions, stands out as one of the simplest and most widely implemented non-invasive screening tools for detecting individuals at a high risk of Obstructive Sleep Apnea (OSA), a still underdiagnosed syndrome characterized by the partial or complete obstruction of the upper airways during sleep. The main aim of this study was to enhance the diagnostic accuracy of the BQ through Machine Learning (ML) techniques. A ML classifier (hereafter, ML-10) was trained using the ten questions of the standard BQ. Another ML model (ML-2) was trained using a simplified variant of the BQ, BQ-2, which comprises only two questions out of the total ten. A 10-fold cross validation scheme was employed. Ground truth was provided by the Apnea–Hypopnea Index (AHI) measured by Home Sleep Apnea Testing. The model performance was determined by comparing ML-10 and ML-2 with the standard BQ in the Receiver Operating Characteristic (ROC) space and using metrics such as the Area Under the Curve (AUC), sensitivity, specificity, and accuracy. Both ML-10 and ML-2 demonstrated superior performance in predicting the risk of OSA compared to the standard BQ and were also capable of classifying OSA with two different AHI thresholds (AHI ≥ 15, AHI ≥ 30) that are typically used in clinical practice. This study underscores the importance of integrating ML techniques for early OSA detection, suggesting a direction for future research to improve diagnostic processes and patient outcomes in sleep medicine with minimal effort

Study of High-Transverse-Momentum Higgs Boson Production in Association with a Vector Boson in the qqbb Final State with the ATLAS Detector

This Letter presents the first study of Higgs boson production in association with a vector boson (V = W or Z) in the fully hadronic qqbb final state using data recorded by the ATLAS detector at the LHC in proton-proton collisions at sqrt(s) = 13 TeV and corresponding to an integrated luminosity of 137 fb−1. The vector bosons and Higgs bosons are each reconstructed as large-radius jets and tagged using jet substructure techniques. Dedicated tagging algorithms exploiting b-tagging properties are used to identify jets consistent with Higgs bosons decaying into bb̄. Dominant backgrounds from multijet production are determined directly from the data, and a likelihood fit to the jet mass distribution of Higgs boson candidates is used to extract the number of signal events. The VH production cross section is measured inclusively and differentially in several ranges of Higgs boson transverse momentum: 250–450, 450–650, and greater than 650 GeV. The inclusive signal yield relative to the standard model expectation is observed to be μ = 1.4+1.0−0.9 and the corresponding cross section is 3.1 ± 1.3(stat)+1.8−1.4(syst) pb

In Oga Magoga. Destinazioni e provenienze (un tempo presenti) nel linguaggio idiomatico italiano

The contribution of the toponymic component in the construction of idioms is, unlike what one might think, truly conspicuous. It is a material, often of considerable importance and scope, which has not had great success in our lexicography. In this paper, we will focus on some Italian idiomatic expressions – no longer in use – that contain toponyms. In the second part we reconstruct the particularly interesting history of the expressions linked to Oga Magoga

Scientific identity and epistemology of movement, exercise, and sport sciences through the analysis of scientific production of Italian full professors

This study addresses the epistemological and identity challenges encountered by Movement, Exercise, and Sport Sciences (MEaSS) in Italy, particularly concerning the organization of scientific knowledge within academic contexts. MEaSS struggles to define its scientific identity and address epistemological concerns due to the concurrent operation of its academic scientific disciplines (ASD) within both biomedical and pedagogical domains. This situation raises questions about the classification of knowledge within MEaSS and its distinctiveness within the Italian academic community. The study aims to analyze the scientific production of Italian full professors in two ASDs of MEaSS and determine its relevance to biomedical, pedagogical, psychological, or sports domains. It also intends to investigate the alignment of Italian academic structures with international standards, particularly the European Research Council (ERC) model. Each full professor’s top 20 scientific products, ranked by the highest number of citations within the Google Scholar database, were analyzed. The analysis of scientific production among Italian full professors in the two ASDs of Movement, Exercise, and Sport Sciences (MEaSS) revealed significant findings. In the ASD of M-EDF/01, 58.5% of publications were attributed to the biomedical domain, followed by 32.7% in the sports domain, 6.9% in the pedagogical domain, and 1.9% in the psychological domain. For the ASD of M-EDF/02, 47.5% of publications were in the biomedical domain, 25% in the sports domain, 18.1% in the pedagogical domain, and 9.4% in the psychological domain. The prevalence of biomedicalfocused research within both ASDs of MEaSS highlights a notable deviation from the intended disciplinary boundaries, raising concerns regarding the loss of scientific identity and epistemological coherence. These results emphasize the urgent need for alignment with international standards to ensure clarity of scientific identity and promote interdisciplinary research in MEaSS

Article 134

Commento all'articolo 134 del Trattato sul funzionamento dell'Unione europea per il prestigioso commentario internazionale a cura di Blanke e Mangiameli. L'articolo è dedicato al Comitato economico e finanziario, organo di supporto al funzionamento del Consiglio dell'Unione nella sua formazione economico-finanziaria

Due codici poco noti della Biblioteca Provinciale “Nicola Bernardini” di Lecce. Il ms. 215 e la Cyrugia magistri Gulielmi Placentini de Saliceto

L’articolo presenta due manoscritti posseduti dalla Biblioteca Provinciale “Nicola Bernardini” di Lecce: il ms. 215 contiene la Chirurgia di Guglielmo da Saliceto (ca. 1210-1280/85), il ms. 217 è un Salterio-Innario scritto dal celebre copista Giovan Marco Cinico (ca. 1430-post 1503)