Abstract

We revisit the azimuthal decorrelation δϕ between a jet and a Z boson produced at hadron colliders. Employing different recombination schemes for the jets leads to significantly different NLL-resummed predictions for the distribution of this quantity. Specifically when the jets are reconstructed with the E-scheme (i.e., four-momentum addition) in the kt or anti-kt clustering algorithms, then the resummation becomes highly non-trivial due to the presence of non-global and/or clustering logarithms. We evaluate these logarithms analytically at two loops and numerically to all orders in the large-Nc limit, and present a full NLL resummation of δϕ. We extend the accuracy of the perturbative expansion of the resummed distribution at fixed order to NNLL accuracy by including O(αs) NLO corrections obtained with MadGraph5_aMC@NLO. We compare our findings with results of various Monte Carlo event generators and with experimental data from the CMS collaboration.

Details

Title
Azimuthal decorrelation between a jet and a Z boson at hadron colliders
Author
Bouaziz, Hamza 1 ; Delenda, Yazid 1   VIAFID ORCID Logo  ; Khelifa-Kerfa, Kamel 2 

 Université de Batna-1, Laboratoire de Physique des Rayonnements et de leurs Intéractions avec la Matière Département de Physique, Faculté des Sciences de la Matière, Batna, Algeria (GRID:grid.440475.6) (ISNI:0000 0004 1771 734X) 
 Université Ahmed Zabana de Relizane, Département de Physique, Faculté des Sciences et Technologies, Relizane, Algeria (GRID:grid.440475.6) 
Pages
6
Publication year
2022
Publication date
Oct 2022
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2768581785
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.