期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP07(2013)073
关键词
Higgs Physics; Beyond Standard Model; Standard Model
资金
- Ministero Istruzione Universita e Ricerca
- Estonian Science Foundation [MTT60]
- European Union through the European Regional Development Fund
- [SF0690030s09]
The LHC experiments have analyzed the 7 and 8TeV LHC data in the main Higgs production and decay modes. Current analyses only loosely constrain an anomalous top-Higgs coupling in a direct way. In order to strongly constrain this coupling, the Higgs-top associated production is reanalyzed. Thanks to the large destructive interference in the t-channel for standard model couplings, this process can be very sensitive to both the magnitude and the sign of a non-standard top-Higgs coupling. We project the sensitivity to anomalous couplings to the integrated luminosity of 50 fb(-1), corresponding to the data collected by the ATLAS and CMS experiments in 7 and 8TeV collisions, as of 2012. We show that the combination of diphoton and multi-lepton signatures, originating from different combinations of the top and Higgs decay modes, can be a potential probe to constrain a large portion of the negative top-Higgs coupling space presently allowed by the ATLAS and CMS global fits.
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