The model contains baryon-(and lepton)-number-violating (BNV) four-fermion interactions: tbμc, tbue, tτdu. Note all three flavour variations are controlled by the same parameters (aaa, bbb, ccc, ddd and primed analogues). These interactions for instance lead to the t→b̅c̅μ⁺ decay and ub→t̅e⁺ single top production in association with a single lepton.

Following ​1107.3805, the implemented mass-eigenstate operators take the form:

Relations between the parameters above and those of the following gauge-eigenstate basis:

are

where the various V's are the rotations between mass- and gauge eigenstates.

UFO model: bnv-ufo.tar.gz​

Please refer to: ​https://arxiv.org/abs/1107.3805

Contact person: Gauthier Durieux