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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/133072
Search for Majorana Neutrinos in B−→π+μ−μ− Decays
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A search for heavy Majorana neutrinos produced in the B − → π + μ − μ − decay mode is performed using 3 fb − 1 of integrated luminosity collected with the LHCb detector in p p collisions at center-of-mass energies of 7 and 8 TeV at the LHC. Neutrinos with masses in the range 250 to 5000 MeV and lifetimes from zero to 1000 ps are probed. In the absence of a signal, upper limits are set on the branching fraction B ( B − → π + μ − μ − ) as functions of neutrino mass and lifetime. These limits are on the order of 10 − 9 for short neutrino lifetimes of 1 ps or less. Limits are also set on the coupling between the muon and a possible fourth-generation neutrino.
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BADALOV, Alexey, et al. Search for Majorana Neutrinos in B−→π+μ−μ− Decays. Physical Review Letters. 2014. Vol. 112, num. 13, pags. 131802. ISSN 0031-9007. [consulted: 5 of October of 2026]. Available at: https://hdl.handle.net/2445/133072