In this paper the prospects to make a precise measurement of the K + →π + νν‾ decay using a new kaon decay in-flight technique are reviewed. A preliminary result based on data collected in 2016 yielded one candidate event, compatible with the Standard Model prediction. Assuming that the event is background, an upper limit of 1.4×10 −9 (95% CL) has been placed. NA62 is currently taking data: it is expected that with the full data sample recorded before the CERN long shutdown 2 (LS2), the experiment will have about 20 SM events.
In-flight Search for K + →π + νν‾: First NA62 Results / Ambrosino, F.; Corvino, M.; Massarotti, P.; Mirra, M.; Napolitano, M.; Saracino, G.. - In: NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS. - ISSN 2405-6014. - 303-305:(2018), pp. 49-52. [10.1016/j.nuclphysbps.2019.03.010]
In-flight Search for K + →π + νν‾: First NA62 Results
Ambrosino F.;Massarotti P.;Napolitano M.;Saracino G.
2018
Abstract
In this paper the prospects to make a precise measurement of the K + →π + νν‾ decay using a new kaon decay in-flight technique are reviewed. A preliminary result based on data collected in 2016 yielded one candidate event, compatible with the Standard Model prediction. Assuming that the event is background, an upper limit of 1.4×10 −9 (95% CL) has been placed. NA62 is currently taking data: it is expected that with the full data sample recorded before the CERN long shutdown 2 (LS2), the experiment will have about 20 SM events.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
