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The recovery of an unpublished Fermi's and Bovalini's university handout
Get PDFTheauthor’s research revealed a university handout relating to Prof. Umberto Sborgi’s course in Physical Chemistry in the academic year 1920–1921 by the students Enrico Fermi and Enrico Bovalini at the Royal University of Pisa. The
article reports also the discovery of the minutes of the individual special exams taken by Enrico Fermi as a student of the Degree Course in Physics at that University, in order to include the Physical Chemistry exam taken by the student Enrico Fermi in his university career
The measurement of muon g−2 at Fermilab
Get PDFThe Muon g −2 Experiment at Fermilab (E989) was built to repeat and improve the previous E821 Experiment at Brookhaven National Laboratory (BNL), aiming to reduce the experimental error by a factor of 4 to the final accuracy
of 140 parts per billion (ppb). On April 7th, 2021, the E989 collaboration published the first result based on the first year of data taking (Run-1), measuring aμ = 0.001 165 920 40(54) with a precision of 460 ppb. The measured value is consistent with the BNL measurement and strengthens the long-standing tension with the data-driven SM prediction to a combined discrepancy of 4.2σ. On the theory side,
however, new efforts involving lattice-QCD techniques are starting to question the current consensus on the theoretical prediction, demanding new improvements on
both the experimental and theoretical sides. The Muon g−2 Experiment at Fermilab has now concluded its sixth and final year of data taking, and a new result based on the Run-2 and Run-3 data was published in August 2023. This paper briefly
describes the Muon g − 2 Experiment at Fermilab and its current status
Rare and semileptonic decays and LFNU at LHCb
Get PDFThe couplings of electroweak gauge bosons and the different lepton families are universal in the Standard Model. However, recent measurements have shown deviations from this behavior, which could potentially be due to contribution from new physics. The lepton flavour universality tests done at the LHCb experiment using tree-level and rare B decays, lepton flavour violating decays and decay rate measurements of some rare decays are presented
Analytical approaches and digital methods in alluvial archaeology: the ‘Ancient Shipyard’ of Pisa-San Rossore as a case study
Get PDFThis paper aims to present analytical approaches and digital methods for the analysis of ceramic assemblages resulting from catastrophic alluvial flood flows. The study has been developed based on the principles of ‘alluvial archaeology’, a recently-developed field of archaeology. In this research program, ceramic records have been treated on a par with clasts in the geomorphological analyses of alluvial sediments. To test the different analytical procedures the ‘Ancient Shipyard’ of Pisa-San Rossore has been selected as a case study. This archaeological site represents a river channel, affected by several alluvial flood events. The analysis achieved several objectives, including the definition of the formation processes of the deposition (in synergy with the results of geomorphological data), the chronological framework of alluvial floods, the dynamics of flows, and locating the original deposition of the ceramic assemblage. In this regard, the combination of different approaches has proven particularly useful, ranging from computational analyses for chrono-typological determination of ceramic assemblages to intra-site spatial analyses, which have been useful in defining alluvial flood flows and the subsequent movement of ceramic assemblages
La legge organica della giustizia riparativa e il ruolo della vittima nella riforma Cartabia: luci e ombre
Get PDFLa riforma Cartabia, con il titolo IV dedicato alla disciplina organica della giustizia riparativa, costituirà un banco di prova per questo modello di giustizia in tutte le sue accezioni e declinazioni e rappresenta per l’intero sistema penale una vera a propria rivoluzione copernicana che pone in discussione la teoria della pena e della penalità. Nel contesto della riforma del processo penale la sfida alla quale la giustizia è chiamata sarà quella di riparare i delitti.
L’articolo intende offrire indicazioni di contenuto circa le seguenti domande: quali delitti? Quale selezione dovrà essere effettuata al fine di garantire il supremo interesse della vittima rappresentato dall’evitare la vittimizzazione secondaria?
La réforme Cartabia, avec le titre IV dédié à la justice restaurative, servira de banc d’essai pour ce modèle de justice selon ses différentes déclinaisons, en constituant pour le système pénal une véritable révolution copernicienne qui remet en cause la théorie de la peine. Dans le contexte de la réforme du procès pénal, le défi pour la justice sera de réparer les délits.
Cet article a pour objectif d’élaborer des orientations afin de répondre aux questions suivantes : quels délits ? Quel choix devrait-on faire pour garantir l’intérêt suprême de la victime d’éviter les risques de victimisation secondaire ?
The Cartabia’s reform, within the Title IV on restorative justice, will serve as a testing ground for this model of justice to suit its different versions, as a true Copernican revolution for the criminal justice system because this would challenge the theories of punishment. Within the context of the criminal proceedings reform, the challenge for justice will be to repair the crimes.
This article serves to develop contents to answer these questions: which crimes? Which choice should be done to guarantee the best interest of the victims to avoid the risks of secondary victimization
JUNO Detector: Liquid scintillator purification with distillation and stripping plants
Get PDFJUNO (Jiangmen Underground Neutrino Observatory), currently
under construction in China, is a multipurpose underground liquid scintillator detector, designed to study some of the fundamental neutrino parameters. The central detector of JUNO consists of a huge acrylic sphere filled with 20 kton of organic liquid scintillator (LS) mixture, whose optical and radio-purity properties are crucial to achieve the experimental goals. For this purpose, before filling the detector, the scintillator will be purified through a sequence of 5 purification processes: alumina filtration, vacuum distillation, mixing plant, water extraction and gas stripping. The distillation of the solvent is fundamental to remove heavy and high-boiling radioactive metals, such as 238U, 232Th and 40K, while the stripping process has been
proven effective to remove gaseous impurities like Ar, Kr and Rn. Two dedicated plants have been designed and built to perform the distillation and the stripping purification processes on JUNO LS. These plants have been recently commissioned at JUNO site to test and verify the purification efficiency on several LS samples and to optimize the operating parameters of the plants. Some preliminary results (absorption spectra) on LS will be presented
Possibility of detecting high-energy neutrinos from galactic supernovae with ATLAS
Get PDFSupernovae may emit high-energy neutrinos above 100 GeV due
to interactions in the circumstellar medium. It is possible for ATLAS, a collider experiment at the Large Hadron Collider at CERN, to detect these neutrinos. This talk outlines an ongoing effort to estimate this possible signal
Le necropoli di Pontecagnano: archivi e supporti digitali per la tutela e la ricerca a 25 anni dall'elaborazione del GIS
Get PDFThe paper is dedicated to the Geographic Information System developed for the filing and the analysis of Pontecagnano necropolises, where over 10400 tombs dated from the Etruscan to the Samnite phase (9 th-3rd century BC) have been excavated so far. The first version of the GIS was developed between 1999 and 2000 and initially tested on an area of the Western necropolis. It consists of an alphanumeric descriptive database, developed using Microsoft Access 2000, linked to a cartographic section implemented with the MapInfo software. The paper concludes with a preliminary presentation of the update of the information system, which is going to migrate to an open-source software