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; Kloe, Collaborazione; 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.| File | Dimensione | Formato | |
|---|---|---|---|
|
physics_letters_B_2005.pdf
non disponibili
Tipologia:
Documento in Post-print
Licenza:
Accesso privato/ristretto
Dimensione
254.69 kB
Formato
Adobe PDF
|
254.69 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
