Search for heavy Majorana neutrinos in e±e± and e±μ± final states via WW scattering in pp collisions at √s=13 TeV with the ATLAS detector
A search for heavy Majorana neutrinos in scattering of same-sign.. boson pairs in proton-proton collisions at root s = 13 TeV at the LHC is reported. The dataset used corresponds to an integrated luminosity of 140 fb(-1), collected with the ATLAS detector during 2015-2018. The search is performed in...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
September 2024
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| In: |
Physics letters
Year: 2024, Jahrgang: 856, Pages: 1-24 |
| ISSN: | 1873-2445 |
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| Verfasserangaben: | the ATLAS Collaboration* |
MARC
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| 024 | 7 | |a 10.1016/j.physletb.2024.138865 |2 doi | |
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| 110 | 2 | |a ATLAS Collaboration |e VerfasserIn |0 (DE-588)16327966-4 |0 (DE-627)671122282 |0 (DE-576)352523182 |4 aut | |
| 245 | 1 | 0 | |a Search for heavy Majorana neutrinos in e±e± and e±μ± final states via WW scattering in pp collisions at √s=13 TeV with the ATLAS detector |c the ATLAS Collaboration* |
| 246 | 3 | 3 | |a Search for heavy Majorana neutrinos in e ± e ± and e ± mu ± final states via WW scattering in pp collisions at square root s=13 TeV with the ATLAS detector |
| 264 | 1 | |c September 2024 | |
| 300 | |b Illustrationen | ||
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| 500 | |a Im Titel ist das Sonderzeichen "±" hochgestellt | ||
| 500 | |a *the ATLAS Collaboration: G. Aad, A. Ackermann, L.M. Baltes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, L. Sanfilippo, C. Sauer, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, J. Zinsser | ||
| 500 | |a Gesehen am 09.09.2025 | ||
| 520 | |a A search for heavy Majorana neutrinos in scattering of same-sign.. boson pairs in proton-proton collisions at root s = 13 TeV at the LHC is reported. The dataset used corresponds to an integrated luminosity of 140 fb(-1), collected with the ATLAS detector during 2015-2018. The search is performed in final states including a same-sign ee or e mu pair and at least two jets with large invariant mass and a large rapidity difference. No significant excess of events with respect to the Standard Model background predictions is observed. The results are interpreted in a benchmark scenario of the Phenomenological Type-I Seesaw model. New constraints are set on the values of the vertical bar V-eN vertical bar(2) and vertical bar VeNV mu N*vertical bar parameters for heavy Majorana neutrino masses between 50 GeV and 20 TeV, where V-eN is the matrix element describing the mixing of the heavy Majorana neutrino mass eigenstate with the Standard Model neutrino of flavour l = e, mu. The sensitivity to the Weinberg operator is investigated and constraints on the effective ee and e mu Majorana neutrino masses are reported. The statistical combination of the ee and e mu channels with the previously published mu mu channel is performed. | ||
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