EPS HEP 2015

Spin correlations of muons and tau leptons in ee->μμ and ee->tau tau and of leptons in the final state of gg->ee, μμ, tau tau

Not scheduled

20m

poster Flavour Physics and Fundamental Symmetries

Speaker

Dr Valery Lyuboshitz (Joint Institute for Nuclear Research, Dubna)

Description

The spin structure of the processes $e^+e^−$ -> $ \mu^+\mu^−$ and gg -> $e^+e^−$ are theoretically investigated. It is demonstrated that, if the primary particles are unpolarized, the final state lepton pair remains unpolarized as well but their spins prove to be strongly correlated. Explicit expressions for the elements of the spin density matrices and the components of the correlation tensor of the final state lepton system are derived. It is established that the spin correlations have a pure quantum character, since one of the Bell-type incoherence inequalities for the correlation tensor components is always violated.

Presentation materials

EPS_HEP_2015--Valery_Lyuboshitz_1.pdf