We present a measurement of the KL lifetime using the KLOE detector. From a sample of ∼ 4×108 KSKL pairs following the reaction e+e− →Phi →KSKL we select ∼ 15 × 106 KL→π0π0π0 decays tagged by KS→π+π− events. From a fit of the proper time distribution we find tauL= (50.92 ± 0.17stat ± 0.25syst) ns. This is the most precise measurement of the KL lifetime performed to date.

MEASUREMENT OF THE KL MESON LIFETIME WITH THE KLOE DETECTOR

MEROLA, LEONARDO;SARACINO, GIULIO;A. ALOISIO;AMBROSINO, FABIO;MASSAROTTI, PAOLO
2005

Abstract

We present a measurement of the KL lifetime using the KLOE detector. From a sample of ∼ 4×108 KSKL pairs following the reaction e+e− →Phi →KSKL we select ∼ 15 × 106 KL→π0π0π0 decays tagged by KS→π+π− events. From a fit of the proper time distribution we find tauL= (50.92 ± 0.17stat ± 0.25syst) ns. This is the most precise measurement of the KL lifetime performed to date.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11588/203441
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