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; Collaborazione, Kloe; Napolitano, M.; Saracino, Giulio; Aloisio, A.; Ambrosino, Fabio; DI DONATO, C.; Massarotti, Paolo. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 626:(2005), pp. 15-23. [10.1016/j.physletb.2005.08.022]

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.
2005
MEASUREMENT OF THE KL MESON LIFETIME WITH THE KLOE DETECTOR / Merola, Leonardo; Collaborazione, Kloe; Napolitano, M.; Saracino, Giulio; Aloisio, A.; Ambrosino, Fabio; DI DONATO, C.; Massarotti, Paolo. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 626:(2005), pp. 15-23. [10.1016/j.physletb.2005.08.022]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/203441
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