TY - JOUR
T1 - Observation of photon-induced W +W − production in pp collisions at√s = 13 TeV using the ATLAS detector
AU - ATLAS Publications
AU - Clark, Philip James
AU - Farrington, Sinead
AU - Gao, Yanyan
AU - Leonidopoulos, Christos
AU - Martin, Victoria Jane
AU - Mijovic, Liza
AU - Wynne, Benjamin
AU - Carter, T.M.
AU - Faucci Giannelli, M.
AU - Hasib, A.
AU - Heath, M.P.
AU - Palazzo, S.
AU - Søgaard, A.
AU - Takeva, E.P.
AU - Taylor, A.J.
AU - Themistokleous, N.
AU - Villhauer, E.M.
PY - 2021/5/10
Y1 - 2021/5/10
N2 - This letter reports the observation of photon-induced production of W -boson pairs, γ γ → W W . The analysis uses 139 fb−1 of LHC proton–proton collision data taken at √s = 13 TeV recorded by the ATLAS experiment during the years 2015–2018. The measurement is performed selecting one electron and one muon, corresponding to the decay of the diboson system as W W → e±νμ∓ν final state. The background-only hypothesis is rejected with a significance of well above 5 standard deviations consistent with the expectation from Monte Carlo simulation. A cross section for the γ γ → W W process of 3.13 ± 0.31(stat.) ± 0.28(syst.) fb is measured in a fiducial volume close to the acceptance of the detector, by requiring an electron and a muon of opposite signs with large dilepton transverse momentum and exactly zero additional charged particles. This is found to be in agreement with the Standard Model prediction.
AB - This letter reports the observation of photon-induced production of W -boson pairs, γ γ → W W . The analysis uses 139 fb−1 of LHC proton–proton collision data taken at √s = 13 TeV recorded by the ATLAS experiment during the years 2015–2018. The measurement is performed selecting one electron and one muon, corresponding to the decay of the diboson system as W W → e±νμ∓ν final state. The background-only hypothesis is rejected with a significance of well above 5 standard deviations consistent with the expectation from Monte Carlo simulation. A cross section for the γ γ → W W process of 3.13 ± 0.31(stat.) ± 0.28(syst.) fb is measured in a fiducial volume close to the acceptance of the detector, by requiring an electron and a muon of opposite signs with large dilepton transverse momentum and exactly zero additional charged particles. This is found to be in agreement with the Standard Model prediction.
U2 - 10.1016/j.physletb.2021.136190
DO - 10.1016/j.physletb.2021.136190
M3 - Article
SN - 0370-2693
VL - 816
SP - 1
EP - 24
JO - Physics Letters B
JF - Physics Letters B
M1 - 136190
ER -