Measurement of the KL meson lifetime with the KLOE detector
We present a measurement of the KL lifetime using the KLOE detector. From a sample of ∼4×108KSKL pairs following the reaction e+e−→ϕ→KSKL we select ∼15×106KL→π0π0π0 decays tagged by KS→π+π− events. From a fit of the proper time distribution we find τL=(50.92±0.17stat±0.25syst) ns. This is the most p...
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Published in | Physics letters. B Vol. 626; no. 1-4; pp. 15 - 23 |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
20.10.2005
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | We present a measurement of the KL lifetime using the KLOE detector. From a sample of ∼4×108KSKL pairs following the reaction e+e−→ϕ→KSKL we select ∼15×106KL→π0π0π0 decays tagged by KS→π+π− events. From a fit of the proper time distribution we find τL=(50.92±0.17stat±0.25syst) ns. This is the most precise measurement of the KL lifetime performed to date. |
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ISSN: | 0370-2693 1873-2445 |
DOI: | 10.1016/j.physletb.2005.08.022 |