Prospects for strong coupling measurement at hadron colliders using soft-drop jet mass

Autor(en)
Holmfridur S. Hannesdottir, Aditya Pathak, Matthew D. Schwartz, Iain W. Stewart
Abstrakt

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.

Organisation(en)
Teilchenphysik
Externe Organisation(en)
Princeton University, Harvard University, Deutsches Elektronen-Synchrotron DESY, University of Manchester, Massachusetts Institute of Technology
Journal
Journal of High Energy Physics
Band
2023
Anzahl der Seiten
75
ISSN
1029-8479
DOI
https://doi.org/10.48550/arXiv.2210.04901
Publikationsdatum
04-2023
Peer-reviewed
Ja
ÖFOS 2012
103012 Hochenergiephysik
Schlagwörter
ASJC Scopus Sachgebiete
Nuclear and High Energy Physics
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/prospects-for-strong-coupling-measurement-at-hadron-colliders-using-softdrop-jet-mass(f38623ac-1b02-4691-984c-9a2265619f70).html