期刊
EUROPEAN PHYSICAL JOURNAL C
卷 63, 期 1, 页码 11-21出版社
SPRINGER
DOI: 10.1140/epjc/s10052-009-1077-0
关键词
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资金
- Japan Society for the Promotion of Science [18034004]
- Grants-in-Aid for Scientific Research [18034004] Funding Source: KAKEN
We study the impact of dimension-six operators on single- and double-Higgs production rates via gluon fusion at the Large Hadron Collider (LHC). If the top-Yukawa coupling is modified by some new physics whose scale is of the TeV scale, its effect changes the cross sections of single-Higgs production gg -> H and double-Higgs production gg -> HH through the top-loop diagram. In particular, double-Higgs production can receive significant enhancement from the effective top-Yukawa coupling and the new dimension-five coupling t (t) over bar HH which are induced by the dimension-six operator. Comparing these results to the forthcoming data at the LHC, one can extract information of the dimension-six operators relevant to the top quark and the Higgs boson.
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