Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1995-10-17
Phys.Rev.Lett.75:4173-4177,1995
Physics
High Energy Physics
High Energy Physics - Experiment
15 pages, LaTex, 2 figures
Scientific paper
10.1103/PhysRevLett.75.4173
We present the first measurement of the correlation between the $Z^0$ spin and the three-jet plane orientation in polarized $Z^0$ decays into three jets in the SLD experiment at SLAC utilizing a longitudinally polarized electron beam. The CP-even and T-odd triple product $\vec{S_Z}\cdot(\vec{k_1}\times \vec{k_2})$ formed from the two fastest jet momenta, $\vec{k_1}$ and $\vec{k_2}$, and the $Z^0$ polarization vector $\vec{S_Z}$, is sensitive to physics beyond the Standard Model. We measure the expectation value of this quantity to be consistent with zero and set 95\% C.L. limits of $-0.022 < \beta < 0.039$ on the correlation between the $Z^0$-spin and the three-jet plane orientation.
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