https://doi.org/10.1140/epjc/s10052-019-7104-x
Regular Article - Theoretical Physics
Majorana neutrinos with effective interactions in B decays
1
Instituto de Física, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, 11300, Montevideo, Uruguay
2
Instituto de Física, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay
3
Instituto de Física de Mar del Plata (IFIMAR) CONICET, UNMDP, Departamento de Física, Universidad Nacional de Mar del Plata, Funes 3350, 7600, Mar del Plata, Argentina
* e-mail: lduarte@fing.edu.uy
Received:
15
April
2019
Accepted:
2
July
2019
Published online:
13
July
2019
We investigate the possible contribution of Majorana neutrinos to B meson decays in an effective interaction formalism, in the mass range 0.5 GeV 
GeV. We study the decay of the 
meson via 
at LHCb, which is a signal for leptonic number violation and the presence of Majorana neutrinos, and put bounds on different new physics contributions, characterized by their Dirac–Lorentz structure. We also study the bounds imposed by the radiative B decay (
) results from Belle. The obtained bounds are more restrictive than previous values found for dimension 6 four-fermion contact vectorial and scalar Majorana neutrino interactions in the context of the left–right symmetric model for higher Majorana masses at the LHC, showing that the direct calculation of the effective N interactions contribution to different processes can help to put more stringent bounds to different UV-complete models parameterized by an effective Lagrangian.
© The Author(s), 2019
