We study linear power corrections O(ΛQCD/Q) to certain collider observables. We present arguments that prove that such corrections cannot appear in observables that are inclusive with respect to QCD radiation, such as total cross sections as well as rapidity and transverse momentum distributions of color-neutral particles. Although our calculations are carried out in a simplified framework, our arguments and conclusions are applicable, with some reservations, to processes both at lepton and hadron colliders. We also show how an improved understanding of the origin of linear power corrections allows us to simplify their calculation. As an application, we compute the leading non-perturbative corrections to the C-parameter and the thrust in e+e− annihilation in a generic three-jet configuration.

Caola, F., Ferrario Ravasio, S., Limatola, G., Melnikov, K., Nason, P. (2022). On linear power corrections in certain collider observables. JOURNAL OF HIGH ENERGY PHYSICS, 2022(1) [10.1007/JHEP01(2022)093].

On linear power corrections in certain collider observables

Ferrario Ravasio, S;Limatola, G;Nason, P
2022

Abstract

We study linear power corrections O(ΛQCD/Q) to certain collider observables. We present arguments that prove that such corrections cannot appear in observables that are inclusive with respect to QCD radiation, such as total cross sections as well as rapidity and transverse momentum distributions of color-neutral particles. Although our calculations are carried out in a simplified framework, our arguments and conclusions are applicable, with some reservations, to processes both at lepton and hadron colliders. We also show how an improved understanding of the origin of linear power corrections allows us to simplify their calculation. As an application, we compute the leading non-perturbative corrections to the C-parameter and the thrust in e+e− annihilation in a generic three-jet configuration.
Articolo in rivista - Articolo scientifico
NLO Computations; QCD Phenomenology;
English
Caola, F., Ferrario Ravasio, S., Limatola, G., Melnikov, K., Nason, P. (2022). On linear power corrections in certain collider observables. JOURNAL OF HIGH ENERGY PHYSICS, 2022(1) [10.1007/JHEP01(2022)093].
Caola, F; Ferrario Ravasio, S; Limatola, G; Melnikov, K; Nason, P
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/394909
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