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Measurements of differential cross-sections of WbWb production in the dilepton channel in pp collisions at s=13 TeV using the ATLAS detector
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Measurements of differential cross-sections of WbWb production in the dilepton channel in pp collisions at s=13 TeV using the ATLAS detector

G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, K. Abeling, N. J. Abicht, S. H. Abidi, M. Aboelela, A. Aboulhorma, H. Abramowicz, …
The journal of high energy physics, Vol.2026(2), p.153
02/13/2026

Abstract

Classical and Quantum Gravitation Elementary Particles Physics and Astronomy Quantum Field Theories Regular Article - Experimental Physics Relativity Theory Physics Quantum Field Theory Quantum Physics String Theory
At the Large Hadron Collider, the WbWb final state is expected to be dominated by tt¯ production with a contribution from single-top processes. Differential cross-sections for WbWb production in the dilepton decay channel are measured at the particle level as a function of various kinematic variables. The analysis is based on data from proton-proton collisions at a centre-of-mass energy of s√=13 TeV, recorded by the ATLAS detector at the Large Hadron Collider over the period from 2015 to 2018, corresponding to an integrated luminosity of 140 fb−1. Measurements are performed within the fiducial phase-space defined by the presence of two b-jets and one electron and one muon of opposite charges. The differential cross-sections are corrected for detector effects and unfolded to the particle level. Results are compared with predictions from Monte Carlo event generators at next-to-leading order in perturbative quantum chromodynamics. These measurements provide valuable constraints on the modelling of WbWb production and the interference between doubly resonant and singly resonant WbWb production.
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https://doi.org/10.1007/JHEP02(2026)153View
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