The spin density matrix of top quark pairs produced in electron-positron annihilation including QCD radiative corrections
نویسنده
چکیده
We calculate the spin density matrix of top quark pairs for the reaction e+e− → tt̄X to order αs. As an application we show next-to-leading order results for a variety of spin observables for the tt̄ system. These include the top quark and antiquark polarizations and tt̄ spin-spin correlations as a function of the center-of-mass energy and of the top quark scattering angle for arbitrary longitudinal polarization of the electron/positron beam. PACS number(s): 12.38.Bx; 13.88.+e; 14.65.Ha Typeset using REVTEX supported by BMBF, contract 057AC9EP. supported by Deutsche Forschungsgemeinschaft.
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تاریخ انتشار 1998