Probing Higgs boson CP properties with tt̄H at the LHC and the 100 TeV pp collider
Probing Higgs boson CP properties with tt̄H at the LHC and the 100 TeV pp collider
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DOI:
10.1142/s0217751x15501560
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发表时间:
2014-12
影响因子:
1.6
通讯作者:
Xiao-Gang He;Guan-Nan Li;Ya-juan Zheng
中科院分区:
文献类型:
--
作者:
Xiao-Gang He;Guan-Nan Li;Ya-juan Zheng
The Higgs boson H has the largest coupling to the top quark t among the standard model (SM) fermions. This is one of the ideal places to investigate new physics beyond SM. In this work, we study the potential of determining Higgs boson CP properties at the LHC and future 33 TeV and 100 TeV pp colliders by analyzing various operators formed from final states variables in ttH production. The discrimination power from SM coupling is obtained with Higgs boson reconstructed from H → γγ and H → bb. We find that ttbb process can provide more than 3σ discrimination power with 300fb−1 integrated luminosity in a wide range of allowed Higgs to top couplings for the LHC, the 33 TeV and 100 TeV colliders. For ttγγ the discrimination power will be below 3σ at the LHC, while for 33 TeV and 100 TeV colliders, more than 3σ sensitivity can be reached.