Bounds on photon scattering

Bounds on photon scattering

We study 2-to-2 scattering amplitudes of massless spin one particles in \(d=4\) space-time dimensions, like real world photons. We define a set of non-perturbative observables (Wilson coefficients) which describe these amplitudes at low energies. We use full non-linear unitarity to construct various...

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Veröffentlicht in:arXiv.org 2022-11
Hauptverfasser: Häring, Kelian, Hebbar, Aditya, Karateev, Denis, Meineri, Marco, Penedones, João
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Amplitudes
Particle spin
Photon scatter
Photons
Physics - High Energy Physics - Phenomenology
Physics - High Energy Physics - Theory
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Hebbar, Aditya
Karateev, Denis
Meineri, Marco
Penedones, João
description We study 2-to-2 scattering amplitudes of massless spin one particles in \(d=4\) space-time dimensions, like real world photons. We define a set of non-perturbative observables (Wilson coefficients) which describe these amplitudes at low energies. We use full non-linear unitarity to construct various novel numerical bounds on these observables. For completeness, we also rederive some bounds using positivity only. We discover and explain why some of these Wilson coefficients cannot be bounded.
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subjects Amplitudes
Particle spin
Photon scatter
Photons
Physics - High Energy Physics - Phenomenology
Physics - High Energy Physics - Theory
title Bounds on photon scattering
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