CP-Violating Effect of QCD Vacuum in Quark Fragmentation
A. Efremov, D. Kharzeev
Abstract
We demonstrate that the non-trivial CP-violating structure of QCD vacuum can lead to an observable effect in e+e- q q 2-jet annihilation. We find that the sign of the jet handedness correlation can be opposite to that predicted by factorization of q~ q fragmentation and CP-conjugation of the two jets. A simple model estimation of the handedness correlation magnitude is given.
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