Searches for top-Higgs FCNC couplings via the Whj signal with h→γγ at the LHC

In this paper, we investigated the process pp→W−hj induced by the top-Higgs flavor-changing neutral current couplings at the LHC. We found that the cross section of pp→W−hj mainly comes from the resonant process pp→W−t→W−hq due to the anomalous tqH couplings (where q denotes up and charm quarks). We...

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Bibliographic Details
Published in:Physical review. D 2016-09, Vol.94 (5)
Main Authors: Liu, Yao-Bei, Xiao, Zhen-Jun
Format: Article
Language:English
Subjects:
Charm (particle physics)
Couplings
Flavors
Luminosity
Neutral currents
Observability (systems)
Online Access:Get full text
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Summary:In this paper, we investigated the process pp→W−hj induced by the top-Higgs flavor-changing neutral current couplings at the LHC. We found that the cross section of pp→W−hj mainly comes from the resonant process pp→W−t→W−hq due to the anomalous tqH couplings (where q denotes up and charm quarks). We further studied the observability of the top-Higgs flavor-changing neutral current couplings through the process pp→W−(→ℓ−ν¯ℓ)h(→γγ)j and found that the branching ratios Br(t→qh) can be probed to 0.16% at 3σ level at 14 TeV LHC with an integrated luminosity of 3000 fb−1.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.94.054018