Seminario F. Brizioli

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dalle 11:00 alle 12:00


Stanza 412, Blocco C

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Il giorno 18 Maggio alle ore 11,00 presso l'aula 412, Francesco Brizioli (Universita' e INFN di Perugia) terra' un seminario dal titolo

Recent results from the NA62 Experiment on the K+ → π+ ν ν̄ decay study


The NA62 Experiment, installed in the CERN North Area, studies the physics of the K+ meson, exploiting a 400 GeV proton beam from the SPS accelerator colliding with a fixed beryllium target. Its main purpose is to carry out a precision test of the Standard Model, measuring the branching ratio of the ultra-rare dacay K+ → π+ ν ν̄ , whose most recent value predicted by the theory is BR(K+ → π+ ν ν̄) = (0.84 ± 0.10) · 10−10 , where the main contribution on the theoretical uncertainty is due to the knowledge of the CKM matrix elements. The NA62 goal is to perform this measurement with a 10% precision, in order to strictly test the Standard Model and try to figure out New Physics evidence. After the full detector commissioning in 2016, NA62 collected data in 2016 and 2017, and a new run is going on. until the november 2018. The full 2016 data sample has been analyzed: the preliminary results and the future perspectives will be presented.