Titel
Prospects for strong coupling measurement at hadron colliders using soft-drop jet mass
Autor*in
Holmfridur S. Hannesdottir
Institute for Advanced Study, Princeton
Matthew D. Schwartz
Department of Physics, Harvard University
... show all
Abstract
We compute the soft-drop jet-mass distribution from pp collisions to NNLL accuracy while including nonperturbative corrections through a field-theory based formalism. Using these calculations, we assess the theoretical uncertainties on an αs precision measurement due to higher order perturbative effects, nonperturbative corrections, and PDF uncertainty. We identify which soft-drop parameters are well-suited for measuring αs, and find that higher-logarithmic resummation has a qualitatively important effect on the shape of the jet-mass distribution. We find that quark jets and gluon jets have similar sensitivity to αs, and emphasize that experimentally distinguishing quark and gluon jets is not required for an αs measurement. We conclude that measuring αs to the 10% level is feasible now, and with improvements in theory a 5% level measurement is possible. Getting down to the 1% level to be competitive with other state-of-the-art measurements will be challenging.
Stichwort
FactorizationRenormalization GroupJets and Jet SubstructureResummationThe Strong Coupling
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
phaidra.univie.ac.at/o:2064847
Erschienen in
Titel
Journal of High Energy Physics
Band
2023
Ausgabe
4
ISSN
1029-8479
Erscheinungsdatum
2023
Publication
Springer Science and Business Media LLC
Fördergeber
Erscheinungsdatum
2023
Zugänglichkeit
Rechte
Rechteangabe
© The Authors
Universität Wien | Universitätsring 1 | 1010 Wien | T
+43-1-4277-0