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High Energy Physics - Theory

arXiv:2111.12719 (hep-th)
[Submitted on 24 Nov 2021 (v1), last revised 9 Nov 2022 (this version, v2)]

Title:Double Copy of Form Factors and Higgs Amplitudes: A mechanism of turning spurious poles in Yang-Mills into physical poles in gravity

Authors:Guanda Lin, Gang Yang
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Abstract:We extend the double copy picture of scattering amplitudes to a class of matrix elements (so-called form factors) that involve local gauge invariant operators. Both the Bern, Carrasco and Johansson (BCJ) and the Kawai, Lewellen and Tye (KLT) formalisms are considered and novel properties are observed. One remarkable feature is that through the double-copy construction, certain spurious poles hidden in the gauge form factors become physical propagators in gravity. This mechanism also reveals new hidden relations for form factors which can be understood as a generalization of the BCJ relations.
Comments: 6 pages, 4 figures, 4 pages of appendix; ver2, small modifications;
Subjects: High Energy Physics - Theory (hep-th); High Energy Physics - Phenomenology (hep-ph)
Report number: USTC-ICTS/PCFT-21-45
Cite as: arXiv:2111.12719 [hep-th]
  (or arXiv:2111.12719v2 [hep-th] for this version)
  https://doi.org/10.48550/arXiv.2111.12719
Related DOI: https://doi.org/10.1103/PhysRevLett.129.251601

Submission history

From: Guanda Lin [view email]
[v1] Wed, 24 Nov 2021 19:00:01 UTC (268 KB)
[v2] Wed, 9 Nov 2022 04:34:47 UTC (390 KB)
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