Observation of photon-induced W+W− production in pp collisions at √s=13 TeV using the ATLAS detector
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, co...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
4 March 2021
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| In: |
Physics letters
Year: 2021, Jahrgang: 816, Pages: 1-24 |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2021.136190 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2021.136190 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269321001301 |
| Verfasserangaben: | The ATLAS Collaboration |
| Zusammenfassung: | 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. |
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| Beschreibung: | Im Titel steht der Buchstabe s unter dem Wurzelsymbol Im Titel sind Plus- und Minuszeichen hochgestellt The ATLAS Collaboration: G. Aad, F. Bartels, M.M. Czurylo, S.J. Dittmeier, M. Dunford, S. Franchino, M. Klassen, A. Krishnan, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, A. Schoening, H-C. Schultz-Coulon, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, X. Yue [und viele weitere] Gesehen am 29.07.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1873-2445 |
| DOI: | 10.1016/j.physletb.2021.136190 |