$e^{+}e^{-}\to Z^0Z^0\to b\bar{b}c\bar{c}$ events as model independent probe of colour reconnection effects

Details $e^{+}e^{-}\to Z^0Z^0\to b\bar{b}c\bar{c}$ events as model independent probe of colour reconnection effects $e^{+}e^{-}\to Z^0Z^0\to b\bar{b}c\bar{c}$ events as model independent probe of colour reconnection effects

1999-12-16

arxiv.org/abs/hep-ph/9912374v1

Phys.Lett.B458:370-374,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 3 ps figures, Latex format

Scientific paper

10.1016/S0370-2693(99)00594-8

According to the basic properties of QCD, colour reconnection effects can occur in hadronic processes at high energies. The comparison of $e^{+}e^{-}\to Z^0Z^0\to q\bar{q}q'\bar{q'}$ events with the superposition of $Z^0\to q\bar{q}$ and $Z^0\to q'\bar{q'}$ events from LEP1 would provide an unambiguous model-independent probe. We show that at LEP2 energy, the background processes are negligible if we select only $e^{+}e^{-}\to Z^0Z^0\to b \bar{b}c\bar{c}$ events, and limit the measurements in the phase space of on-shell $Z^0Z^0$ events.

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