Higgs boson pair production and decay at NLO in QCD: the $b\bar{b}\gamma \gamma$ final state

Abstract

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 $b\bar{b}\gamma \gamma$ 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 $m_{jj\gamma \gamma }$ distribution, the transverse momentum spectra of the leading bottom quark jet and photon are significant and can not be approximated by a constant factor.

19 pages, 4 figures; v2: to match the journal version

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Cited by in corpus (3)

• Improved constraints on Higgs boson self-couplings with quartic and cubic power dependencies of the cross section
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Fully differential Higgs boson pair production at N${}^3$LO with top quark mass effects