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Study of the decay asymmetry parameter and CP violation parameter in the Lambdac+ --> Lambda pi+ decay

J. M. Link
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Abstract

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement of the weak decay-asymmetry parameter alpha(Lambdac) in Lambdac --> Lambda pi decay. Comparing particle with antiparticle decays, we obtain the first measurement of the CP violation parameter : A = [alpha(Lambdac)+alpha(antiLambda_c)]/[alpha(Lambdac)-alpha(antiLambda_c)]. We obtain alpha(Lambdac)=-0.78+-0.16+-0.13 and A = -0.07+-0.19+-0.12 where errors are statistical and systematic.

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J. M. Link. 2005-09-28. Study of the decay asymmetry parameter and CP violation parameter in the Lambdac+ --> Lambda pi+ decay. https://doi.org/10.1016/j.physletb.2006.01.017

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