Year: 2020
Type: article
Abstract: We consider the longitudinal momentum distribution of hadrons inside jets in proton-proton collisions. At partonic threshold large double logarithmic corrections arise which need to be resummed to all orders. We develop a factorization formalism within SCET that allows for the joint resummation of threshold and jet radius logarithms. We achieve next-to-leading logarithmic NLL' accuracy by including non-global logarithms in the leading-color approximation. Overall, we find that the threshold resummation leads to a sizable enhancement of the cross section and a reduced QCD scale dependence, suggesting that the all-order resummation can be important for the reliable extraction of fragmentation functions in global analyses when jet substructure data is included.
Authors: Kaufmann, T, Liu, X, Mukherjee, A, Ringer, F, Vogelsang, W
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, National Natural Science Foundation of China, Eberhard Karls Universität Tübingen, Bundesministerium für Bildung und Forschung, Fundamental Research Funds for the Central Universities, Laboratory Directed Research and Development, Lawrence Berkeley National Laboratory
Awards: G1143651532, G1571665594, Verbundprojekt 05P2015 - ALICE at High Rate (BMBF-FSP 202): Jet- und Fragmentationsprozesse bei ALICE, die partonische Struktur von Kernen und die Struktur schwerer Hadronen, G2871998818, Verbundprojekt 05P2018 (ErUM-FSP T01) - Ausbau von ALICE am LHC: Jets und partonische Struktur von Kernen, SI2-SSI: Collaborative Research: Jet Energy-Loss Tomography with a Statistically and Computationally Advanced Program Envelope (JETSCAPE), G3987066818, G42916606, G8460866090
OpenAlex ID: W3102408083