Prospects for strong coupling measurement at hadron colliders using soft-drop jet mass
- Author(s)
- Holmfridur S. Hannesdottir, Aditya Pathak, Matthew D. Schwartz, Iain W. Stewart
- 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.
- Organisation(s)
- Particle Physics
- External organisation(s)
- Princeton University, Harvard University, Deutsches Elektronen-Synchrotron DESY, University of Manchester, Massachusetts Institute of Technology
- Journal
- Journal of High Energy Physics
- Volume
- 2023
- No. of pages
- 75
- ISSN
- 1029-8479
- DOI
- https://doi.org/10.48550/arXiv.2210.04901
- Publication date
- 04-2023
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103012 High energy physics
- Keywords
- ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/prospects-for-strong-coupling-measurement-at-hadron-colliders-using-softdrop-jet-mass(f38623ac-1b02-4691-984c-9a2265619f70).html