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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:30 |
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Conference: Bucharest University Faculty of Physics 2024 Meeting
Section: Theoretical and Computational Physics, High-Energy Physics, Applied Mathematics
Title:
Latest results from precision measurements at the NA62 experiment
Authors:
Petre-Constantin Boboc (1)
*
Affiliation:
1) Horia Hulubei National Institute of Physics and Nuclear Engineering (IFIN-HH), Str. Reactorului no.30, P.O.BOX MG-6, Magurele, Romania
E-mail
petre.constantin.boboc@cern.ch
Keywords:
kaon decays, pion decays, axion-like particles
Abstract:
The NA62 experiment at CERN collected the world's largest dataset of charged kaon decays in 2016-2018, leading to the first measurement of the branching ratio of the ultra-rare $K^+
ightarrow pi^+
u ar{
u}$ decay, based on 20 candidates. In this talk two NA62 analyses are reported using the data samples collected in 2017 and 2018. $K^+
ightarrow pi^+ gamma gamma$ decay is analysed, decay collected using a minimum-bias trigger and the results include measurement of the branching ratio and study of the di-photon mass spectrum. Also, the first search of production and prompt decay of an ALP with gluon coupling in the $K^+
ightarrow pi^+ A, A
ightarrow gamma gamma$ process is performed. A sample of $pi^0
ightarrow e^+ e^-$ decay candidates was collected and preliminary results of the branching ratio measurement is presented.
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