期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 9, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP09(2016)123
关键词
Beyond Standard Model; Effective field theories; Higgs Physics; Technicolor and Composite Models
资金
- European Commission through the Marie Curie Career Integration Grant [631962]
- Helmholtz Association
- European Research Council under the European Union's Seventh Framework Programme (FP)/ERC Grant [279972]
- US Department of Energy [DE-SC-000999]
- MIAPP
- INFN
Inclusive Higgs measurements at the LHC have limited resolution on the gluon fusion loops, being unable to distinguish the long-distance contributions mediated by the top quark from possible short-distance new physics effects. Using an Effective Field Theory (EFT) approach we compare several proposed methods to lift this degeneracy, including t (t) over barh and boosted, off-shell and double Higgs production, and perform detailed projections to the High-Luminosity LHC and a future hadron collider. In addition, we revisit off-shell Higgs production. Firstly, we point out its sensitivity to modifications of the top-Z couplings, and by means of a general analysis we show that the reach is comparable to that of tree-level processes such as t (t) over barZ production. Implications for composite Higgs models are also discussed. Secondly, we assess the regime of validity of the EFT, performing an explicit comparison for a simple extension of the Standard Model containing one vector-like quark.
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