Higgs boson decay into b-quarks at NNLO accuracy

Vittorio Del Duca, Claude Duhr, Gábor Somogyi, Francesco Tramontano, Z. Trócsányi

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42 Citations (Scopus)

Abstract

Abstract: We compute the fully differential decay rate of the Standard Model Higgs boson into b-quarks at next-to-next-to-leading order (NNLO) accuracy in αs. We employ a general subtraction scheme developed for the calculation of higher order perturbative corrections to QCD jet cross sections, which is based on the universal infrared factorization properties of QCD squared matrix elements. We show that the subtractions render the various contributions to the NNLO correction finite. In particular, we demonstrate analytically that the sum of integrated subtraction terms correctly reproduces the infrared poles of the two-loop double virtual contribution to this process. We present illustrative differential distributions obtained by implementing the method in a parton level Monte Carlo program. The basic ingredients of our subtraction scheme, used here for the first time to compute a physical observable, are universal and can be employed for the computation of more involved processes.

Original languageEnglish
Article number36
JournalJournal of High Energy Physics
Volume2015
Issue number4
DOIs
Publication statusPublished - Apr 1 2015

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Keywords

  • Jets
  • QCD Phenomenology

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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