Precision Measurement of KS Meson Lifetime with the KLOE detector

Details Precision Measurement of KS Meson Lifetime with the KLOE detector Precision Measurement of KS Meson Lifetime with the KLOE detector

2010-11-11

arxiv.org/abs/1011.2668v3

Eur.Phys.J.C71:1604,2011

Physics

High Energy Physics

High Energy Physics - Experiment

5 pages, 7 figures

Scientific paper

10.1140/epjc/s10052-011-1604-7

Using a large sample of pure, slow, short lived K0 mesons collected with KLOE detector at DaFne, we have measured the KS lifetime. From a fit to the proper time distribution we find tau = (89.562 +- 0.029_stat +- 0.043_syst) ps. This is the most precise measurement today in good agreement with the world average derived from previous measurements. We observe no dependence of the lifetime on the direction of the Ks.

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