Measurement of the Production Cross Section of a Higgs Boson with Large Transverse Momentum in Its Decays to a Pair of $\tau$ Leptons in Proton-Proton Collisions at $\sqrt{s}$ = 13 TeV

The CMS collaboration
CMS-HIG-21-017, 2024.

Abstract (data abstract)
A measurement of the production cross section of a Higgs boson with transverse momentum greater than 250 GeV is presented where the Higgs boson decays to a pair of $\tau$ leptons. It is based on proton-proton collision data collected by the CMS experiment at the CERN LHC at a center-of-mass energy of 13 TeV. The data sample corresponds to an integrated luminosity of 138 fb$^{-1}$. Because of the large transverse momentum of the Higgs boson the $\tau$ leptons from its decays are boosted and produced spatially close, with their decay products overlapping. Therefore, a dedicated algorithm was developed to reconstruct and identify them. The observed (expected) significance of the measured signal with respect to the standard model background-only hypothesis is 3.5 (2.2) standard deviations. The product of the production cross section and branching fraction is measured to be $1.64^{+0.68}_{-0.54}$ times the standard model expectation. The fiducial differential production cross section is also measured as functions of the Higgs boson and leading jet transverse momenta. This measurement extends the probed large-transverse-momentum region beyond 600 GeV.

  • Diff XS v.s. Higgs pt

    Figure 3 (right).

    10.17182/hepdata.149577.v1/t1

    Observed and expected differential fiducial cross sections in bins of Higgs boson $p_{T}$. The last bin include the overflow. The...

  • Diff XS v.s. leading jet pt

    Figure 3 (left).

    10.17182/hepdata.149577.v1/t2

    Observed and expected differential fiducial cross sections in bins of leading jet $p_{T}$. The last bin include the overflow. The...

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