Na48: Results on Rare Decays and Future Prospects
نویسنده
چکیده
Recent results obtained by the NA48 Collaboration on rare neutral kaon and hyperon decays are presented. These include measurements performed with the simultaneous KL and KS beams during the " 0 =" programme as well as investigations of rare KS and neutral hyperon decays using high intensity proton beams at the KS target station. Future projects aiming to search for very rare KS decays and to study direct CP violation with charged kaon beams are also discussed.
منابع مشابه
Results from the NA48 experiment on rare neutral kaon decays
New and recent measurements of the branching ratios of rare decays of neutral KS and KL mesons are presented. The results have been extracted from data collected during the NA48 ′/ runs as well as in a special high intensity KS and hyperon run. In particular the presentation focuses on the decay of KL → πγγ, KS → π0e+e− and KS → γγ. The prospects of future programs aiming to study direct CP vio...
متن کاملKaon Physics
The most recent progress and future prospects in kaon physics are reviewed. Main results are the first observation of the rare decays KS → π ee and KS → π μμ by NA48, newK → πνν event observed by E949 and new precision measurements of KS,L → πeν decays by KTeV, KLOE and NA48 made in an effort to resolve the slight deviation from the unitarity in the CKM matrix, involving the |Vus| coupling.
متن کاملRecent Na48 Results on Semileptonic and Rare Kaon Decays. Measurement of V Us
The new results of investigation of K 0 L e3 and K ± e3 decays performed by NA48 Collaboration are presented. The measured branching fractions are used to extract V us. The values of Ke3 form-factors and radiative K 0 L e3γ branching ratio are reported. A list of recent NA48 results concerning some rare neutral kaon decays is given.
متن کاملFuture NA48 programs for hyperon rare decays and CP violation measurements
The main objective of NA48 is the measurement of direct CP violation in neutral kaon decays. Useful data has been collected in the years 1997-1999 and two results based on ’97 and ’98 data have been presented [1] [2]. The very good performances of the detector together with a flexible trigger system allowed to accumulate also data useful for other kinds of analyses. An example is an hyperon tri...
متن کاملNew Results in Kaon Physics from Na48 and Ktev
In the recent year many new results from kaon decays have been reported from both the NA48 experiment at CERN and the KTeV experiment at Fermilab. Both experiments have new and improved measurements of the parameter Re( ′/ ) of direct CP violation in the neutral kaon system. Also several new results on rare and very rare KL decays were reported. In addition, the NA48 collaboration has performed...
متن کامل