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Leading asymmetries in two-hadron production in e^+e^- annihilation at the Z pole

D. Boer·R. Jakob·P. J. Mulders
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Abstract

We present the leading unpolarized and single spin asymmetries in inclusive two-hadron production in electron-positron annihilation at the Z pole. The azimuthal dependence in the unpolarized differential cross section of almost back-to-back hadrons is a leading cos(2 phi) asymmetry, which arises solely due to the intrinsic transverse momenta of the quarks. An extensive discussion on how to measure this asymmetry and the accompanying time-reversal odd fragmentation functions is given. A simple estimate indicates that the asymmetry could be of the order of a percent.

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D. Boer, R. Jakob, P. J. Mulders. 1998-01-19. Leading asymmetries in two-hadron production in e^+e^- annihilation at the Z pole. https://doi.org/10.1016/s0370-2693(98)00136-1

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