abstract

• The ultra-rare K%2b ? p%2b decay benefits from a precisely predicted branching ratio in the SM BR(K%2b ? p%2b = (8.4 ± 1.0) × 10-11, being almost free from theoretical uncertainties, and most importantly from a very high sensitivity to a variety of beyond-the-standard-model scenarios, making it one of the best candidates to reveal indirect effects of new physics in the flavour sector. The NA62 experiment at the CERN SPS, designed to measure the branching ratio of K%2b ? p%2bwith a decay-in-flight technique, collected data in 2016-2018. New results from the analysis of 2018 data, the largest data set so far collected, will be presented. The result will represent the most accurate measurement so far achieved of this ultra-rare decay. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).

authors

• Engelfried Jatzkowski Jurgen
• The NA62 Collaboration

publication date

• 2021-01-01

published in

• Proceedings of Science  Proceedings

keywords

• Accurate measurement; Branching ratio; High sensitivity; Indirect effects; New physics; New results; Rare decays; The standard model; High energy physics

Digital Object Identifier (DOI)

PubMed ID

start page

end page

volume

• 390

issue