First search for K+ → π+ vv¯ using the decay-in-flight technique
NAGIOS: RODERIC FUNCIONANDO

First search for K+ → π+ vv¯ using the decay-in-flight technique

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First search for K+ → π+ vv¯ using the decay-in-flight technique

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The NA62 Collaboration; Cortina Gil, Eduardo; Husek, Tomas
This document is a artículoDate2019
The NA62 experiment at the CERN SPS reports the first search for K+→π+νν¯ using the decay-in-flight technique, based on a sample of 1.21 x 10^11 K+ decays collected in 2016. The single event sensitivity is 3.15 x 10^-10 , corresponding to 0.267 Standard Model events. One signal candidate is observed while the expected background is 0.152 events. This leads to an upper limit of 14 x 10^-10 on the K+→π+νν¯ branching ratio at 95% CL.

    The NA62 Collaboration Cortina Gil, Eduardo Husek, Tomas 2019 First search for K+ → π+ vv¯ using the decay-in-flight technique Physics Letters B 791 156 166
https://doi.org/10.1016/j.physletb.2019.01.067

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