期刊
EUROPEAN PHYSICAL JOURNAL C
卷 76, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-016-4256-9
关键词
-
资金
- United States Department of Energy [de-sc0012704]
We compute the next-to-leading order virtual QCD corrections to Higgs-pair production via gluon fusion. We present analytic results for the two-loop contributions to the spin-0 and spin-2 form factors in the amplitude. The reducible contributions, given by the double-triangle diagrams, are evaluated exactly while the two-loop irreducible diagrams are evaluated by an asymptotic expansion in heavy top-quark mass up to and including terms of O(1/m(t)(8)). Assuming that the finite top-quarkmass effects are of similar size in the entire range of partonic energies, we estimate that mass effects can reduce the hadronic cross section by at most 10 %.
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