This paper presents a measurement of the production cross-section of a W boson associated with one or two jets, where at least one jet originates from a b-quark. The data are collected with the ATLAS detector at the LHC in proton-proton collisions at root s = 13 TeV, corresponding to an integrated luminosity of 140 fb-1. Differential cross sections are presented as a function of the transverse momentum of the b-jet for both the electron and muon decay modes of the W boson. The results corrected for all detector effects are presented in a fiducial region defined with basic lepton and jet kinematics, and compared with theoretical predictions. The combined fiducial cross-section of W + b-jets for the electron and muon channels is measured to be 16.6 +- 1.9 pb, which is consistent with the next-to-leading-order QCD prediction of 16.8 +- 2.3 pb. The relative precision of this measurement is improved by approximately a factor of two compared with the previous ATLAS measurement at root s = 7 TeV.

Null, N., Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., et al. (2026). Measurement of the cross-section for the production of a W boson in association with b-jets in pp collisions at root s = 13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 2026(10) [10.1007/jhep10(2026)027].

Measurement of the cross-section for the production of a W boson in association with b-jets in pp collisions at root s = 13 TeV with the ATLAS detector

Aielli, G.;Camarri, P.;Cerrito, L.;De Sanctis, U.;Di Ciaccio, A.;
2026-01-01

Abstract

This paper presents a measurement of the production cross-section of a W boson associated with one or two jets, where at least one jet originates from a b-quark. The data are collected with the ATLAS detector at the LHC in proton-proton collisions at root s = 13 TeV, corresponding to an integrated luminosity of 140 fb-1. Differential cross sections are presented as a function of the transverse momentum of the b-jet for both the electron and muon decay modes of the W boson. The results corrected for all detector effects are presented in a fiducial region defined with basic lepton and jet kinematics, and compared with theoretical predictions. The combined fiducial cross-section of W + b-jets for the electron and muon channels is measured to be 16.6 +- 1.9 pb, which is consistent with the next-to-leading-order QCD prediction of 16.8 +- 2.3 pb. The relative precision of this measurement is improved by approximately a factor of two compared with the previous ATLAS measurement at root s = 7 TeV.
2026
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Rilevanza internazionale
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Esperti anonimi
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
English
Con Impact Factor ISI
Null, N., Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., et al. (2026). Measurement of the cross-section for the production of a W boson in association with b-jets in pp collisions at root s = 13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 2026(10) [10.1007/jhep10(2026)027].
Null, N; Aad, G; Aakvaag, E; Abbott, B; Abdelhameed, S; Abeling, K; Abicht, Nj; Abidi, Sh; Aboelela, M; Aboulhorma, A; Abramowicz, H; Acharya, Bs; Ack...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/475487
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