Rare Kaon Decays at CERN SPS
- Atomic Phys. Dept., Faculty of Physics, University of Sofia, 5 J. Bourchier Str., 1164 Sofia (Bulgaria)
Since their discovery the K-mesons continue to provide valuable information to the theory of the interactions between the elementary particles. In two years of data taking the NA48/2 experiment at CERN SPS recorded more than 4 billion K{sup +}-->pi{sup +}pi{sup -}pi{sup +}- decays devoted to the search of CP violation in the charged kaon system. The huge statistics allows also a precise study of rare kaon decays. The results from the investigation of K{sup +}-->pi{sup +}-e{sup +}e{sup -} decay will be shown with their interpretation within several theoretical models. The continuation of the kaon program at CERN is the NA62 experiment devoted to the measurement of Br(K{sup +}-->pi{sup +}-vnu-bar) decay with a precision of 10% in two years of data taking. The planned detector setup and the expected background and signal events will be presented. During 2007 a dedicated run devoted to NA62 prototype tests and study of K{sub e2} decays was taken. The preliminary results from the study of K{sub e2} decays and the ratio R{sub K} GAMMA(K{sup +}-->e{sup +}-nu)/GAMMA(K{sup +}-->mu{sup +}-mu) at the NA48/2 and NA62 experiments will be shown.
- OSTI ID:
- 21371502
- Journal Information:
- AIP Conference Proceedings, Vol. 1203, Issue 1; Conference: 7. international conference of the Balkan Physical Union, Alexandroupolis (Greece), 9-13 Sep 2009; Other Information: DOI: 10.1063/1.3322595; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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