Measurement of the quadratic slope parameter in the K_L -> 3π^0 decay Dalitz plot

Details Measurement of the quadratic slope parameter in the K_L -> 3π^0 decay Dalitz plot Measurement of the quadratic slope parameter in the K_L -> 3π^0 decay Dalitz plot

2001-06-20

arxiv.org/abs/hep-ex/0106075v1

Phys.Lett.B515:261-268,2001

Physics

High Energy Physics

High Energy Physics - Experiment

13 pages, 3 figures, 2 tables

Scientific paper

10.1016/S0370-2693(01)00861-9

A value of (-6.1 +- 0.9_{stat} +- 0.5_{syst})*10^{-3} is obtained for the quadratic slope parameter h in the K_L -> 3\pi^0 decay Dalitz plot at the NA48 experiment at the CERN SPS. The result is based on 14.7*10^6 fully reconstructed K_L -> 3\pi^0 -> 6\gamma decays. This is the most precise measurement of any of the Dalitz plot slope parameters in the charged and neutral kaon decays so far.

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