NA62 has searched for the K+ → π+νν decay using a new kaon decay in-flight technique. One candidate event, compatible with the Standard Model prediction, has been observed from a sample of 1.2 ×1011 decays. Assuming that the event is background, an upper limit of 1.4 ×10−9 (95% CL) has been placed. Prospects for further improvements of the measurement are given.
In-flight search for K+ → π+νν: First NA62 results / Ceccucci A., Aliberti R., Ambrosino F., Ammendola R., Angelucci B., Antonelli A., Anzivino G., Arcidiacono R., Barbanera M., Biagioni A., Bician L., Biino C., Bizzeti A., Blazek T., Bloch-Devaux B., Bonaiuto V., Boretto M., Bragadireanu M., Britton D., Brizioli F., et al.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - ELETTRONICO. - 330:(2018), pp. 0-0.
In-flight search for K+ → π+νν: First NA62 results
Bizzeti A.
;Bucci F.
;Cerri C.;Corvino M.;D'Agostini G.;Di Lella L.;Fantechi R.;Graham C.;Guida R.;Iacopini E.
;Latino G.
;Lenti M.
;Leonardi E.;Mannelli I.;Marchevski R.
;Migliore E.;Minucci E.;Raggi M.;Ruggiero G.
;Sergi A.;Vicini P.;Volpe R.
;
2018
Abstract
NA62 has searched for the K+ → π+νν decay using a new kaon decay in-flight technique. One candidate event, compatible with the Standard Model prediction, has been observed from a sample of 1.2 ×1011 decays. Assuming that the event is background, an upper limit of 1.4 ×10−9 (95% CL) has been placed. Prospects for further improvements of the measurement are given.
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