TY - JOUR
T1 - Observation of photon-induced W+W− production in pp collisions at s=13 TeV using the ATLAS detector
AU - Aad, G.
AU - Åkesson, T.P.A.
AU - Bocchetta, S.S.
AU - Corrigan, E.E.
AU - Doglioni, C.
AU - Geisen, J.
AU - Gregersen, K.
AU - Hansen, E.
AU - Hedberg, V.
AU - Jarlskog, G.
AU - Kellermann, E.
AU - Konya, B.
AU - Lytken, E.
AU - Mankinen, K.H.
AU - Marcon, C.
AU - Mjörnmark, J.U.
AU - Mullier, G.A.
AU - Poettgen, R.
AU - Poulsen, T.
AU - Skorda, E.
AU - Smirnova, O.
AU - Zwalinski, L.
AU - ATLAS Collaboration
PY - 2021
Y1 - 2021
N2 - This letter reports the observation of photon-induced production of W-boson pairs, γγ→WW. 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 WW→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 γγ→WW 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. © 2021 The Author(s)
AB - This letter reports the observation of photon-induced production of W-boson pairs, γγ→WW. 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 WW→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 γγ→WW 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. © 2021 The Author(s)
U2 - 10.1016/j.physletb.2021.136190
DO - 10.1016/j.physletb.2021.136190
M3 - Article
SN - 0370-2693
VL - 816
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
M1 - 136190
ER -