A Lepton Universality Test at CERN NA62 Experiment
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✦ hep-ex
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cernexperimentleptonna62sampletestuniversalityaiming
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The NA62 experiment at CERN collected a large sample of K+ --> enu decays during a dedicated run in 2007, aiming at a precise test of lepton universality by measurement of the helicity suppressed ratio RK = BR(K+ --> enu)/BR(K+ --> munu). A preliminary result of the analysis of a partial data sample of 51089 K+ --> enu candidates is presented.
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