Higgs boson pair production and decay at NLO in QCD: the bb̅γγ final state
arxiv(2024)
摘要
The Higgs boson pair production at the LHC provides a probe to the Higgs
boson self-coupling. The higher-order QCD corrections in this process are
sizable and must be taken into account in comparison with data. Due to the
small cross section, it is necessary to consider at least one of the Higgs
bosons decaying to bottom quarks. The QCD corrections to the decay processes
would also be important in such cases. We present a full calculation of the
total and differential cross sections for the bb̅γγ final
state with next-to-leading order (NLO) QCD corrections. After applying typical
kinematic cuts in the final state, we find that QCD NLO corrections in the
decay decrease the LO result by 19% and reduce the scale uncertainties by a
factor of two. The QCD corrections to the invariant mass m_jjγγ
distribution, the transverse momentum spectra of the leading bottom quark jet
and photon are significant and can not be approximated by a constant factor.
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