In a preliminary version of the NA48 experiment at the CERN SPS, in which an iron-scintillator sandwich calorimeter was used as a photon detector, the ratio of KL→πμνγ and KL→πμν decays was measured. The branching ratio BR(KL→πμνγ,Eγ*≥30 MeV)/(KL→πμν) is found to be (2.08±0.17 +0.16−0.21)×10−3, where the first error is statistical and the second systematic. The result is in agreement with theoretical predictions.
First measurement of the rate K_L(0) --> pi mu nu gamma
DALPIAZ, Pietro;MARTINI, Mara;PETRUCCI, Ferruccio Carlo;SAVRIE', Mauro;
1998
Abstract
In a preliminary version of the NA48 experiment at the CERN SPS, in which an iron-scintillator sandwich calorimeter was used as a photon detector, the ratio of KL→πμνγ and KL→πμν decays was measured. The branching ratio BR(KL→πμνγ,Eγ*≥30 MeV)/(KL→πμν) is found to be (2.08±0.17 +0.16−0.21)×10−3, where the first error is statistical and the second systematic. The result is in agreement with theoretical predictions.File in questo prodotto:
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