A Measurement of the KL Charge Asymmetry

Details A Measurement of the KL Charge Asymmetry A Measurement of the KL Charge Asymmetry

2002-02-06

arxiv.org/abs/hep-ex/0202016v1

Phys.Rev.Lett.88:181601,2002

Physics

High Energy Physics

High Energy Physics - Experiment

Submitted to Physical Review Letters, Dec 31, 2001. 4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.88.181601

We present a measurement of the charge asymmetry $\delta_L$ in the mode $K_L \to \pi^{\pm}e^{\mp}\nu$ based on 298 million analyzed decays. We measure a value of $\delta_L = (3322 \pm 58(stat) \pm 47(sys))\cdot 10^{-6}$, in good agreement with previous measurements and 2.4 times more precise than the current best published result. The result is used to place more stringent limits on CPT and $\Delta S = \Delta Q$ violation in the neutral kaon system.

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