Search for heavy neutral leptons in W+ → μ+μ± jet decays
A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately $$3.0\, \text {fb} ^{-1} $$of proton-proton collision data at centre-of-mass energies of 7 and $$8\, \text {TeV} $$collected with the LH...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaft: | |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
22 March 2021
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| In: |
The European physical journal. C, Particles and fields
Year: 2021, Jahrgang: 81, Heft: 3, Pages: 1-15 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-021-08973-5 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-021-08973-5 |
| Verfasserangaben: | LHCb Collaboration* |
| Zusammenfassung: | A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately $$3.0\, \text {fb} ^{-1} $$of proton-proton collision data at centre-of-mass energies of 7 and $$8\, \text {TeV} $$collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at $$95\%$$confidence level in the heavy-neutrino mass range from 5 to $$50\, \text {GeV/}c^2 $$. These are of the order of $$10^{-3}$$for lepton-number-conserving decays and of the order of $$10^{-4}$$for lepton-number-violating heavy-neutrino decays. |
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| Beschreibung: | Im Titel sind "±", und "+" hochgestellt Gesehen am 04.05.2021 |
| Beschreibung: | Online Resource |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-021-08973-5 |