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  • Letter
  • Open Access

Three-loop helicity amplitudes for photon+jet production

Piotr Bargieła1,*, Amlan Chakraborty2,†, and Giulio Gambuti1,‡

  • 1Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
  • 2University at Buffalo, The State University of New York, Buffalo 14260, USA

  • *piotr.bargiela@physics.ox.ac.uk
  • †amlancha@buffalo.edu
  • ‡giulio.gambuti@physics.ox.ac.uk
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Phys. Rev. D 107, L051502 – Published 14 March, 2023

DOI: https://doi.org/10.1103/PhysRevD.107.L051502

Abstract

We present three-loop helicity amplitudes for the production of a single photon in association with one jet in quantum chromodynamics, a final state which provides a standard candle of the Standard Model at the Large Hadron Collider. We employ a recently proposed variation of the so-called tensor projection method in the ’t Hooft-Veltman scheme (tHV) which avoids the computation of contributions due to unphysical (−2ε)-dimensional polarizations of the external states. We obtain compact analytic results expressed in terms of harmonic polylogarithms.

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Phys. Rev. D 107, L051502– Published 14 March, 2023
  • Received 17 January 2023
  • Accepted 10 February 2023
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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.

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