TY - JOUR

T1 - Measurement of $$W^{\pm }$$-boson differential cross-sections in proton–proton collisions with low pile-up data at $$\sqrt{s} = 5.02$$ TeV and $$13\,\hbox {TeV}$$ with the ATLAS detector

AU - The ATLAS collaboration

AU - Ali, Hanadi

AU - Alsolami, Zainab

AU - Barton, A.E.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Fernandez Barbadillo, Beltran

AU - Ferrando, James

AU - Fox, H.

AU - Hagan, Alina

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Love, P.A.

AU - Marshall, Emma J.

AU - McElhinney, Luke

AU - Meng, L.

AU - Sampson, Elliot

AU - Smizanska, M.

AU - Wharton, A.M.

PY - 2025/7/31

Y1 - 2025/7/31

N2 - High precision single-differential $$W^\pm $$ W ± -boson production cross-sections as a function of electron or muon transverse momentum $$p_\textrm{T}$$ p T or their pseudorapity $$\eta $$ η , as well as double-differential cross-sections as functions of these variables, are measured in proton–proton collisions at centre-of-mass energies $$\sqrt{s}=5.02$$ s = 5.02 TeV and 13 TeV. The W-boson charge asymmetry as a function of lepton $$\eta $$ η is also measured. The data, collected in dedicated runs at reduced instantaneous luminosity with the ATLAS detector at the Large Hadron Collider, correspond to integrated luminosities of 255 pb $$^{-1}$$ - 1 at 5.02 TeV and 338 pb $$^{-1}$$ - 1 at 13 TeV. The measurements are in agreement with Standard-Model predictions calculated at next-to-next-to-leading-order in the strong coupling constant $$\alpha _s$$ α s including transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy using several parton distribution functions. The impact of the measured differential cross-sections as a function of lepton $$\eta $$ η on the determination of these functions is studied using a profiling technique.

AB - High precision single-differential $$W^\pm $$ W ± -boson production cross-sections as a function of electron or muon transverse momentum $$p_\textrm{T}$$ p T or their pseudorapity $$\eta $$ η , as well as double-differential cross-sections as functions of these variables, are measured in proton–proton collisions at centre-of-mass energies $$\sqrt{s}=5.02$$ s = 5.02 TeV and 13 TeV. The W-boson charge asymmetry as a function of lepton $$\eta $$ η is also measured. The data, collected in dedicated runs at reduced instantaneous luminosity with the ATLAS detector at the Large Hadron Collider, correspond to integrated luminosities of 255 pb $$^{-1}$$ - 1 at 5.02 TeV and 338 pb $$^{-1}$$ - 1 at 13 TeV. The measurements are in agreement with Standard-Model predictions calculated at next-to-next-to-leading-order in the strong coupling constant $$\alpha _s$$ α s including transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy using several parton distribution functions. The impact of the measured differential cross-sections as a function of lepton $$\eta $$ η on the determination of these functions is studied using a profiling technique.

U2 - 10.1140/epjc/s10052-025-14178-x

DO - 10.1140/epjc/s10052-025-14178-x

M3 - Journal article

VL - 85

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 7

M1 - 729

ER -