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Forward jets in the colour-dipole model

S. Munier
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Abstract

We show that a forward jet with large transverse momentum in an onium-onium collision is a hard probe which can be effectively characterized by a colour- dipole distribution at the time of the interaction. The dipole distribution is computed, and compared to its counterpart for a virtual photon in the initial state. We find that while in the photon case, the tail of large sizes is exponentially cut-off, it contributes sizeably in the forward-jet case, which signs the sensitivity of observables based on such events to the infrared region. Moreover, a direct probabilistic interpretation of the dipole distribution fails since it takes negative values in the large size region.

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S. Munier. 2000-04-18. Forward jets in the colour-dipole model. https://doi.org/10.1103/physrevd.63.034015

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