Tag Archives: Evento scientifico

We have recently completed the coupled dispersive analysis of  pi pi -> K anti-K We show that just fitting data fails to satisfy the dispersive representation and leads to inconsistencies with threshold sum-rules as well as unreliable resonance parameterizations. Our main result is a set of constrained fits to data that satisfy 16 dispersion relations of different kinds and allow for a reliable extraction of threshold and subtreshold parameters to be compared with Chiral Perturbation Theory and lattice QCD. In addition, we obtain a precise dispersive determination of the controversial light kappa-meson parameters, which has therefore become a “confirmed” state in the PDG, completing the light meson scalar nonet. The constrained fits to data are easy to implement and ready for further theoretical and experimental studies. La riunione sarà effettuata in modalità telematica, tramite collegamento Webex, seguendo le istruzioni riportate. Si consiglia di scaricare l’app Cisco Webex Meeting: https://help.webex.com/en-us/0tow9g/Download-the-Cisco-Webex-Meetings-Desktop-App Meeting number (access code): 175 227 8093 Meeting password: 21012021 https://infn-lnf.webex.com/infn-lnf/j.php?MTID=m16d0aed8ba5dde2d9187d0d3aec71e28 Tap to join from a mobile device (attendees only) +44-20-7660-8149,,1752278093## United Kingdom Toll Join by phone +44-20-7660-8149 United Kingdom Toll Global call-in numbers Join from a video system or application Dial 1752278093@infn-lnf.webex.com You can also dial 62.109.219.4 and enter your meeting number. Join using Microsoft Lync or Microsoft Skype for Business Dial 1752278093.infn-lnf@lync.webex.com If you are a host, click here to view host information.   Need help? Go to https://help.webex.com

The Borexino collaboration has recently completed the study of solar neutrinos by detecting the CNO cycle. Such process, though sub-dominant in the Sun, plays a key role in the Universe and its detection represents a substantial experimental achievement. The seminar will review the main experimental challenges faced faced to achieve the measurement. It will also summarise the various and rich results obtained by Borexino in its 13 years of data taking.      

A dieci anni dalla scomparsa di Nicola Cabibbo, vogliamo rendergli omaggio dedicando una giornata a ricordare la sua figura di fisico teorico di statura internazionale, attraverso le testimonianze dei suoi allievi e collaboratori.  

Overview SICURA Day è’ l’evento online conclusivo del progetto SICURA, finanziato dalla Regione Lazio nell’ambito del bando L.R. 13/2008 – art.4 “Progetti di Gruppi di Ricerca, Conoscenza e Cooperazione per un Nuovo Modello di Sviluppo”. Si tratta di una giornata dedicata alla presentazione del progetto, dei risultati conseguiti e alla discussione circa i suoi possibili utilizzi in vari ambiti. Il progetto, iniziato a Novembre 2018, riguarda lo sviluppo di una sonda portatile integrata e a basso costo, in grado di rivelare la presenza di sostanze radioattive emittenti raggi gamma e/o neutroni. La sonda SICURA rappresenta un utilissimo strumento di sicurezza impiegabile, ad esempio, nei controlli presso potenziali obiettivi terroristici, come aeroporti, piazze, scuole, università, centri commerciali, ecc. Dotata di capacità identificativa ed elevata sensibilità, la sonda può essere utilizzata anche nel monitoraggio radiometrico presso ospedali, discariche, inceneritori, controllo di rottami o semilavorati, centri di ricerca e impianti nucleari. All’evento, durante il quale si presenterà il progetto SICURA e di dimostreranno le funzionalità dell’omonima sonda, sono invitati a partecipare rappresentanti di piccole e medie imprese della Regione Lazio, che producono strumenti utilizzati per la rivelazione della radiazione, nonché potenziali soggetti interessati all’utilizzo dello strumento in vari ambiti, quali i controlli di sicurezza, il monitoraggio industriale, e la radioprotezione negli ospedali. La partecipazione all’evento è estesa alle imprese del settore, agli stakeholder istituzionali, ai professionisti della sicurezza e della radioprotezione, all’INFN e agli enti di ricerca affini. Seguiranno dettagli organizzativi.

The design of a primary electron beam facility at CERN will be described. It re-enables the Super Proton Synchrotron (SPS) as an electron accelerator, and leverages the development invested in Compact Linear Collider (CLIC) technology for its injector and as an accelerator research and development infrastructure. This would be a facility relevant for several of the key priorities in the 2020 update of the European Strategy for Particle Physics, such as an electron-positron Higgs factory, accelerator R&D, dark sector physics, and neutrino physics. In addition, it could serve experiments in nuclear physics. The electron beam delivered by this facility would provide access to light dark matter production significantly beyond the targets predicted by a thermal dark matter origin, and for the nature of dark matter particles that are not accessible by direct detection experiments. It would also enable electro-nuclear measurements crucial for precise modelling the energy dependence of neutrino-nucleus interactions, which is needed to precisely measure neutrino oscillations as a function of energy. The facility is a natural next step in the development of X-band high-gradient acceleration technology as pursued within the CLIC collaboration. The facility also allows studies of a number of components and phenomena for a future electron-positron Higgs and electroweak factory as the first stage of a next circular collider at CERN, and its cavities in the SPS would be the same type as foreseen for such a future collider. It’s X-band injector linac would become a facility with multi-GeV drive bunches and truly independent electron witness …

The FASER experiment is a new small and inexpensive experiment that will be placed 500 meters downstream of the ATLAS experiment at the CERN LHC. The experiment will shed light on currently unexplored phenomena, having the potential to make a revolutionary discovery. FASER is designed to capture decays of exotic particles, produced in the very forward region, out of the ATLAS detector acceptance. FASERnu, a recently proposed FASER sub-detector, is designed to detect collider neutrinos for the first time and study their properties. FASER was approved by CERN in 2019, with the FASERnu detector approved at the end of 2019. This seminar will present the physics prospects, the detector design, and the construction progress of FASER. The experiment is on track to be installed by early 2021 and to take data during the LHC Run-3, starting in 2022. Istruzioni per partecipare: La connessione ai seminari online dovrà essere effettuata tramite Vibe. Per partecipare è possibile scegliere tra due modalità: collegarsi tramite il client di Vibe ( *download), inserendo semplicemente il proprio nome e il Meeting ID: 4548020848  (opzione consigliata) Link: https://vibe.ezuce.com/launcher/?meetingId=4548020848 Or by using WebRTC in Chrome or Firefox : https://vibe.ezuce.com/webrtc/?meetingID=4548020848 (*) Versioni richieste: Windows 7 or newer Mac OS 10.8.5 or higher Linux 3-4 years old, version 7 or higher

Proposed more than 40 years ago, axions are still the most compelling solution to the strong CP problem of the Standard Model. More recently their physics case has been considerably sharpened, as well as that of similar axion-like particles (ALPs) that generically emerge in diverse high-energy extensions of the Standard Model, notably string theory. Both axion and ALPs constitute very appealing candidates to the dark matter of the Universe, and they are also invoked as a solution of a number of anomalous astrophysical observations. In addition, particular realizations of these type of models appear linked with inflation, dark radiation and even dark energy. These developments, together with the fact that experimental techniques have recently achieved sensitivity to relevant regions of ALP parameter space, are increasing the interest in the search for these particles. I will review the status of the experimental landscape, as well as near term prospect from ongoing experiments, future projects and new detection ideas in the search for laboratory, dark matter and solar axions and ALPs. Istruzioni per partecipare: La connessione ai seminari online dovrà essere effettuata tramite Vibe. Per partecipare è possibile scegliere tra due modalità: collegarsi tramite il client di Vibe ( *download), inserendo semplicemente il proprio nome e il Meeting ID: 3784888470  (opzione consigliata) Link: https://vibe.ezuce.com/launcher/?meetingId=3784888470Or by using WebRTC in Chrome or Firefox : https://vibe.ezuce.com/webrtc/?meetingID=3784888470   (*) Versioni richieste: Windows 7 or newer Mac OS 10.8.5 or higher Linux 3-4 years old, version 7 or higher

The 8th Low Emittance Rings Workshop, supported by the ARIES project, should have been held in Frascati, INFN-LNF in March 2020 but, due to the Covid-19 desease emergency, it has been postponed in October 2020 from 26 to 30.  The Workshop will be held remotely, both for speakers and participants. The connection will be provided by the Cisco Webex platform.                                                                                                The Cisco Webex link to join the Virtual Workshop Room has been sent by email to all registrants. During the Workshop, at Webex log in: * switch microphone and camera off – switch them on only when presenting your talk; * share your screen, select your presentation and go full screen mode. Unshare at the end of your talk; * respect the time allotted to your talk (25′); * “raise hand” to ask questions during the discussion (select your name in the participants’ list on Webex and click on the “hand” icon). The goal of the workshop is to bring together experts from the scientific communities working on low emittance lepton rings. The workshop is sponsored by the RULE network under the ARIES European project and includes light source storage rings, linear collider damping rings and future e+/e- circular colliders. The theme will be beam dynamics …