The light-ray OPE and conformal colliders
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Publication:2024277
DOI10.1007/JHEP01(2021)128zbMATH Open1459.81060arXiv1905.01311OpenAlexW3122516847MaRDI QIDQ2024277
Author name not available (Why is that?)
Publication date: 3 May 2021
Published in: (Search for Journal in Brave)
Abstract: We derive a nonperturbative, convergent operator product expansion (OPE) for null-integrated operators on the same null plane in a CFT. The objects appearing in the expansion are light-ray operators, whose matrix elements can be computed by the generalized Lorentzian inversion formula. For example, a product of average null energy (ANEC) operators has an expansion in the light-ray operators that appear in the stress-tensor OPE. An important application is to collider event shapes. The light-ray OPE gives a nonperturbative expansion for event shapes in special functions that we call celestial blocks. As an example, we apply the celestial block expansion to energy-energy correlators in N=4 Super Yang-Mills theory. Using known OPE data, we find perfect agreement with previous results both at weak and strong coupling, and make new predictions at weak coupling through 4 loops (NNNLO).
Full work available at URL: https://arxiv.org/abs/1905.01311
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