Search for Majorana Neutrinos in B- -> pi(+)mu(-)mu(-) Decays

LHCb collaboration

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Abstract

A search for heavy Majorana neutrinos produced in the B- -> pi(+)mu(-)mu(-) decay mode is performed using 3 fb(-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- -> pi(+)mu(-)mu(-)) 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 languageEnglish
Article number131802
Number of pages8
JournalPhysical Review Letters
Volume112
Issue number13
DOIs
Publication statusPublished - 3 Apr 2014
Externally publishedYes

Keywords

  • 2 LEPTONS

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