This Letter presents a differential cross-section measurement of Lund subjet multiplicities, suitable for testing current and future parton shower Monte Carlo algorithms. This measurement is made in dijet events in 140 fb-1 of root s = 13 TeV proton–proton collision data collected with the ATLAS detector at CERN’s Large Hadron Collider. The data are unfolded to account for acceptance and detector-related effects, and are then compared with several Monte Carlo models and to recent resummed analytical calculations. The experimental precision achieved in the measurement allows tests of higher-order effects in QCD predictions. Most predictions fail to accurately describe the measured data, particularly at large values of jet transverse momentum accessible at the Large Hadron Collider, indicating the measurement’s utility as an input to future parton shower developments and other studies probing fundamental properties of QCD and the production of hadronic final states up to the TeV scale.

Aad, G., Aakvaag, E., Abbott, B., Abeling, K., Abicht, N.j., Abidi, S.h., et al. (2024). Measurements of Lund subjet multiplicities in 13 TeV proton-proton collisions with the ATLAS detector. PHYSICS LETTERS. SECTION B, 859 [10.1016/j.physletb.2024.139090].

Measurements of Lund subjet multiplicities in 13 TeV proton-proton collisions with the ATLAS detector

Aielli, G.;Camarri, P.;Cerrito, L.;De Sanctis, U.;Di Ciaccio, A.;
2024-01-01

Abstract

This Letter presents a differential cross-section measurement of Lund subjet multiplicities, suitable for testing current and future parton shower Monte Carlo algorithms. This measurement is made in dijet events in 140 fb-1 of root s = 13 TeV proton–proton collision data collected with the ATLAS detector at CERN’s Large Hadron Collider. The data are unfolded to account for acceptance and detector-related effects, and are then compared with several Monte Carlo models and to recent resummed analytical calculations. The experimental precision achieved in the measurement allows tests of higher-order effects in QCD predictions. Most predictions fail to accurately describe the measured data, particularly at large values of jet transverse momentum accessible at the Large Hadron Collider, indicating the measurement’s utility as an input to future parton shower developments and other studies probing fundamental properties of QCD and the production of hadronic final states up to the TeV scale.
2024
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
English
Con Impact Factor ISI
Aad, G., Aakvaag, E., Abbott, B., Abeling, K., Abicht, N.j., Abidi, S.h., et al. (2024). Measurements of Lund subjet multiplicities in 13 TeV proton-proton collisions with the ATLAS detector. PHYSICS LETTERS. SECTION B, 859 [10.1016/j.physletb.2024.139090].
Aad, G; Aakvaag, E; Abbott, B; Abeling, K; Abicht, Nj; Abidi, Sh; Aboelela, M; Aboulhorma, A; Abramowicz, H; Abreu, H; Abulaiti, Y; Acharya, Bs; Acker...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/391728
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