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.

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., et al. (2014). Search for Majorana neutrinos in B- →π+μ-μ- decays. PHYSICAL REVIEW LETTERS, 112(13) [10.1103/PhysRevLett.112.131802].

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

CALVI, MARTA;KHANJI, BASEM;KUCHARCZYK, MARCIN;Martinelli, M;PESSINA, GIANLUIGI EZIO;
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.
Articolo in rivista - Articolo scientifico
Physics and Astronomy (all)
English
2014
112
13
131802
none
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Albrecht, J., et al. (2014). Search for Majorana neutrinos in B- →π+μ-μ- decays. PHYSICAL REVIEW LETTERS, 112(13) [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/10281/61315
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