Abstract
We present the first calculation for the hadroproduction of a boson in association with a massive bottom () quark-antiquark pair at next-to-next-to-leading order (NNLO) in QCD perturbation theory. We exploit the hierarchy between the -quark mass and the characteristic energy scale of the process to obtain a reliable analytic expression for the two-loop virtual amplitude with three massive legs, starting from the corresponding result available for massless quarks. The use of massive quarks avoids the ambiguities associated with the correct flavor assignment in massless calculations, paving the way to a more realistic comparison with experimental data. We present phenomenological results considering proton-proton collisions at center-of-mass energy for inclusive production and within a fiducial region relevant for the associated production of a boson and a Higgs boson decaying into a pair, for which production represents one of the most relevant backgrounds. We find that the NNLO corrections are substantial and that their inclusion is mandatory to obtain reliable predictions.
- Received 16 December 2022
- Accepted 30 March 2023
- Corrected 29 November 2023
DOI:https://doi.org/10.1103/PhysRevD.107.074032
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society
Physics Subject Headings (PhySH)
Corrections
29 November 2023
Correction: An error in the code used for the predictions resulted in three incorrect entries in Table I and one incorrect entry in Table II, which have been fixed. The previously published Figs. 1 and 2 also contained errors related to the code error and have been replaced. A corresponding change has been made to a percentage given in the fifth paragraph of Sec. III.