NA62 reports one candidate for a neutrino produced in a K+ to mu+ nu decay and detected in its liquid krypton calorimeter, the first tagged neutrino candidate.
The NA62 GigaTracKer: a low mass high intensity beam 4D tracker with 65 ps time resolution on tracks
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The GigaTracKer (GTK) is the beam spectrometer of the CERN NA62 experiment. The detector features challenging design specifications, in particular a peak particle flux reaching up to 2.0 MHz/mm$^2$, a single hit time resolution smaller than 200 ps and, a material budget of 0.5% X$_0$ per tracking plane. To fulfill these specifications, novel technologies were especially employed in the domain of silicon hybrid time-stamping pixel technology and micro-channel cooling. This article describes the detector design and reports on the achieved performance.
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First detection of a tagged neutrino in the NA62 experiment
NA62 reports one candidate for a neutrino produced in a K+ to mu+ nu decay and detected in its liquid krypton calorimeter, the first tagged neutrino candidate.