Search for heavy neutral leptons in B-meson decays
A search for long-lived heavy neutral leptons produced in B-meson decays and decaying to a μ±π∓ final state is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5 fb−1. The results are i...
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Collectivité auteur: | |
| Format: | Article (Journal) |
| Langue: | anglais |
| Publié: |
18 March 2026
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| In: |
Journal of high energy physics
Year: 2026, Numéro: 3, Pages: 1-30 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP03(2026)178 |
| Accès en ligne: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP03(2026)178
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| Notes sur l'auteur: | the LHCb collaboration* |
| Résumé: | A search for long-lived heavy neutral leptons produced in B-meson decays and decaying to a μ±π∓ final state is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5 fb−1. The results are interpreted in both lepton-number-conserving and lepton-number-violating scenarios. No significant excess is observed. Constraints are placed on the squared mixing element |UμN|2 to the active muon neutrino, under the assumption that couplings to other lepton flavours are negligible, in the mass range of 1.6-5.5 GeV. |
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| Description: | Veröffenttlicht: 18. März 2026 *The LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, C. Cocha Toapaxi, L. Dittmann, F.C. Glaser, X. Han, S. Hansmann-Menzemer, P. Herrero Gascon, R. Kolb, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, M. Ruiz Diaz, M. Schiller, M.D. Tat, G. Tuci, L.H. Uecker, C. Wang, T. Wolf, Y. Zhao, A. Zhelezov [und sehr viele weitere Personen] Gesehen am 18.06.2026 |
| Description matérielle: | Online Resource |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP03(2026)178 |