Journal Article

PUBDB-2023-03386

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Prospects for strong coupling measurement at hadron colliders using soft-drop jet mass

Hannesdottir, H. S. (Corresponding author) ; Pathak, A.DESY* ; Schwartz, M. D. ; Stewart, I. W.

2023
SISSA [Trieste]

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Please use a persistent id in citations: doi:10.1007/JHEP04(2023)087  doi:10.3204/PUBDB-2023-03386

Report No.: DESY-22-156; MIT-CTP-5461; UWThPh 2022-15; arXiv:2210.04901

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 $\alpha_s$ precision measurement due to higher order perturbative effects, nonperturbative corrections, and PDF uncertainty. We identify which soft-drop parameters are well-suited for measuring $\alpha_s$, 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 $\alpha_s$, and emphasize that experimentally distinguishing quark and gluon jets is not required for an $\alpha_s$ measurement. We conclude that measuring $\alpha_s$ 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.

Keyword(s): gluon: jet ; correction: nonperturbative ; quark: jet ; jet: mass ; p p: scattering ; sensitivity ; resummation ; higher-order ; precision measurement ; strong interaction: coupling constant ; Factorization ; Renormalization Group ; Jets and Jet Substructure ; Resummation ; The Strong Coupling

Note: 53 pages + appendices, 15 figures

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2023

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; IF >= 5 ; JCR ; National-Konsortium ; SCOPUS ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Hannesdottir, H. S. (Corresponding author) ; Pathak, A.DESY* ; Schwartz, M. D. ; Stewart, I. W.
Prospects for strong coupling measurement at hadron colliders using soft-drop jet mass
[10.3204/PUBDB-2022-05051]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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