TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.14.3.041
TI  - Designing observables for quantum interference  in jets at subleading color
PY  - 2023/03/20
UR  - https://www.scipost.org/SciPostPhys.14.3.041
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 14
IS  - 3
SP  - 041
A1  - Larkoski, Andrew J.
AB  - The large-$N_c$ or topologically planar limit of gauge theories can be considered as a classical limit because all gauge bosons are distinguishable particles and therefore cannot exhibit interference. Quantum effects due to the flow of color therefore arise starting at subleading in $1/N_c$. We introduce kinematic observables explicitly sensitive to effects at subleading color formed from the ratio of interfering to squared color-ordered amplitudes. Such observables are in general not infrared and collinear safe, so we introduce angular observables defined from appropriate multi-point energy correlators motivated by the form of color-ordered amplitudes. We demonstrate that color interference effects are manifest as sinusoidal oscillation in the simplest system, a collinear jet with three particles, and show the limitations of predicting this observable in all-purpose, leading-color parton shower Monte Carlos.
ER  -

@Article{10.21468/SciPostPhys.14.3.041,
	title={{Designing observables for quantum interference  in jets at subleading color}},
	author={Andrew J. Larkoski},
	journal={SciPost Phys.},
	volume={14},
	pages={041},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.14.3.041},
	url={https://scipost.org/10.21468/SciPostPhys.14.3.041},
}