Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 8, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP08(2022)188
Keywords
1/N Expansion; Field Theories in Higher Dimensions; Supersymmetric Gauge Theory; Nonperturbative Effects
Categories
Funding
- European Research Council (ERC) under the European Union [949077]
- French National Agency for Research [ANR-17-CE31-0001-01]
- European Research Council (ERC) [949077] Funding Source: European Research Council (ERC)
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This paper introduces a new class of collider-type observables in conformal field theories, known as generalized event shapes, which are sensitive to the longitudinal structure of the collision-produced state. It is shown that strong coupling corrections exhibit longitudinal broadening in the energy-energy correlation.
We introduce a new class of collider-type observables in conformal field theories which we call generalized event shapes. They are defined as matrix elements of light-ray operators that are sensitive to the longitudinal, or time-dependent, structure of the state produced in the collision. Generalized event shapes can be studied using both correlation functions and scattering amplitudes. They are infrared finite and smoothly transit over to the familiar event shapes. We compute them in planar N = 4 super-Yang-Mills theory at weak and strong coupling, and study their physical properties. We show that at strong coupling both the stringy and quantum-gravitational corrections to the energy-energy correlation exhibit longitudinal broadening that manifests itself through the presence of long-time tails in the energy flux measured by the detectors.
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