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://ucris.univie.ac.at/portal/de/publications/prospects-for-strong-coupling-measurement-at-hadron-colliders-using-softdrop-jet-mass(f38623ac-1b02-4691-984c-9a2265619f70).html