Multiplicity of (Mini-)Jets at Small x

Details Multiplicity of (Mini-)Jets at Small x Multiplicity of (Mini-)Jets at Small x

1999-07-20

arxiv.org/abs/hep-ph/9907430v1

JHEP 9908 (1999) 019

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 5 figures

Scientific paper

10.1088/1126-6708/1999/08/019

We derive closed expressions for the mean and variance of the (mini-)jet multiplicity distribution in hard scattering processes at low x. Here (mini-)jets are defined as those due to initial-state radiation of gluons with transverse momenta greater than some resolution scale m_R, where Lambda^2 << m_R^2 << Q^2, Lambda being the intrinsic QCD scale and Q the momentum transfer scale of the hard scattering. Our results are valid to leading order in log(1/x) but include all sub-leading logarithms of Q^2/m_R^2. As an illustration, we predict the mini-jet multiplicity in Higgs boson production at the Large Hadron Collider.

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