Abstract
A search for heavy Majorana neutrinos produced in the B-→π+μ- μ- decay mode is performed using 3fb-1 of integrated luminosity collected with the LHCb detector in pp 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.
Original language | English |
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Article number | 131802 |
Journal | Physical Review Letters |
Volume | 112 |
Issue number | 13 |
DOIs | |
Publication status | Published - 3 Apr 2014 |
Externally published | Yes |
Bibliographical note
Copyright:Copyright 2014 Elsevier B.V., All rights reserved.
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy