Dark-sector physics in the search for the rare decays $$K^+\rightarrow \pi ^+ \nu {\bar{\nu }}$$ K+→π+νν¯ and $$K_L\rightarrow \pi ^0 \nu {\bar{\nu }}$$ KL→π0νν¯

Abstract We compute the contribution of the decays $$K_L \rightarrow \pi ^0 Q {\bar{Q}}$$ KL→π0QQ¯ and $$K^+ \rightarrow \pi ^+ Q {\bar{Q}}$$ K+→π+QQ¯ , where Q is a dark fermion of the dark sector, to the measured widths for the rare decays $$K^+\rightarrow \pi ^+ \nu {\bar{\nu }}$$ K+→π+νν¯ and $$...

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Bibliographic Details
Main Authors: Marco Fabbrichesi, Emidio Gabrielli
Format: Article
Language:English
Published: SpringerOpen 2020-06-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-020-8103-7