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. © 2014 CERN, for the LHCb collaboration.

Search for Majorana neutrinos in B- →π+μ-μ- decays / R., A., B., A., M., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., A., A., S., A., S., A., Y., A., L., A., J., A., R., A., M., A., J., A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 112:(2014). [10.1103/PhysRevLett.112.131802]

Search for Majorana neutrinos in B- →π+μ-μ- decays

G. Casse;SARTI, ALESSIO;SCIUBBA, Adalberto;
2014

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. © 2014 CERN, for the LHCb collaboration.
2014
Branching fractions, Center-of-mass energies, Decay mode, Fourth generation, Integrated luminosity, Majorana neutrino, Neutrino mass, Upper limits; High energy physics, Tellurium compounds; Neutrons
01 Pubblicazione su rivista::01a Articolo in rivista
Search for Majorana neutrinos in B- →π+μ-μ- decays / R., A., B., A., M., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., A., A., S., A., S., A., Y., A., L., A., J., A., R., A., M., A., J., A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 112:(2014). [10.1103/PhysRevLett.112.131802]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/665092
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