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Search for flavor-changing neutral current interactions of the top quark and Higgs boson in final states with two photons in proton-proton collisions at $\sqrt{s}$ = 13 TeV

The CMS collaboration
Tumasyan, A. , Adam, W. , Andrejkovic, J.W. , Bergauer, T. , Chatterjee, S. , Dragicevic, M. , Escalante Del Valle, A. , Frühwirth, R. , Jeitler, M. , Krammer, N.
Phys.Rev.Lett. 129 (2022) 032001, 2022.
https://doi.org/10.17182/hepdata.105999.v1

Abstract (data abstract)
Proton-proton interactions resulting in final states with two photons are studied in a search for the signature of flavor-changing neutral current interactions of top quarks (t) and Higgs bosons (H). The analysis is based on data collected at a center-of-mass energy $\sqrt{s}=13~\mathrm{TeV}$ with the CMS detector at the LHC, corresponding to an integrated luminosity of $137~\mathrm{fb}^{-1}$. No significant excess above the background prediction is observed. Upper limits on the branching fractions ($\mathcal B$) of the t quark decaying to an H and an up (u) or charm quark (c) are derived through a binned fit to the diphoton invariant mass spectrum. The observed (expected) $95\%$ confidence level upper limits are found to be $0.019\%~(0.031\%)$ for $\mathcal B(\mathrm{t} \to \mathrm{Hu})$ and $0.073\%~(0.051\%)$ for $\mathcal B(\mathrm{t} \to \mathrm{Hc})$.

  • Expected and observed limits

    Data from Figure 4

    10.17182/hepdata.105999.v1/t1

    Expected and observed 95\% CL upper limits on the branching fraction of the top quark decaying to the Higgs boson...

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