Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-12-16
JHEP 1001:121,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
41 pages, 19 figures; minor typos fixed; version published in JHEP
Scientific paper
We investigate the theoretical description of the central exclusive production process, h1+h2 -> h1+X+h2. Taking Higgs production as an example, we sum logarithmically enhanced corrections appearing in the perturbation series to all orders in the strong coupling. Our results agree with those originally presented by Khoze, Martin and Ryskin except that the scale appearing in the Sudakov factor, mu=0.62 \sqrt{\hat{s}}, should be replaced with mu=\sqrt{\hat{s}}, where \sqrt{\hat{s}} is the invariant mass of the centrally produced system. We confirm this result using a fixed-order calculation and show that the replacement leads to approximately a factor 2 suppression in the cross-section for central system masses in the range 100-500 GeV.
Coughlin T. D.
Forshaw Jeffrey R.
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