<p>We present the double-virtual amplitudes contributing to the production of a Higgs boson in association with a <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="13130_2025_25722_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="19" /> </InlineMediaObject> <EquationSource Format="MATHML"><math display="inline"> <mi>b</mi> <mover accent="true"> <mi>b</mi> <mo stretchy="true">¯</mo> </mover> </math></EquationSource> <EquationSource Format="TEX">\( b\overline{b} \)</EquationSource> </InlineEquation> pair at the Large Hadron Collider. We perform the computation within the five-flavour scheme, which employs massless bottom quarks and finite bottom-Yukawa coupling, taking into account all the colour structures. We derive the analytic form of the helicity amplitudes through finite-field reconstruction techniques. The analytic expressions have been implemented in a public C++ library, and we demonstrate that evaluations are sufficiently stable and efficient for use in phenomenological studies.</p>

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Full-colour double-virtual amplitudes for associated production of a Higgs boson with a bottom-quark pair at the LHC

  • Simon Badger,
  • Heribertus Bayu Hartanto,
  • Rene Poncelet,
  • Zihao Wu,
  • Yang Zhang,
  • Simone Zoia

摘要

We present the double-virtual amplitudes contributing to the production of a Higgs boson in association with a b b ¯ \( b\overline{b} \) pair at the Large Hadron Collider. We perform the computation within the five-flavour scheme, which employs massless bottom quarks and finite bottom-Yukawa coupling, taking into account all the colour structures. We derive the analytic form of the helicity amplitudes through finite-field reconstruction techniques. The analytic expressions have been implemented in a public C++ library, and we demonstrate that evaluations are sufficiently stable and efficient for use in phenomenological studies.