| Title |
Two-body lepton-flavour-violating decays in a 2HDM with soft family-lepton-number breaking / |
| Authors |
Jurčiukonis, Darius ; Lavoura, Luis |
| DOI |
10.1007/JHEP03(2022)106 |
| Full Text |
|
| Is Part of |
Journal of high energy physics.. New York : Springer. 2022, vol. 3, art. no. 106, p. [1-54].. ISSN 1126-6708. eISSN 1029-8479 |
| Keywords [eng] |
flavour violation ; two-Higgs-doublet model ; 2HDM |
| Abstract [eng] |
We evaluate the decays ℓ1→ℓ2γ, Z→ℓ1ℓ2, and h→ℓ1ℓ2, where ℓ1 and ℓ2 are charged leptons with different flavours and h is the scalar particle with mass 125.25 GeV, in a two-Higgs-doublet model where all the Yukawa-coupling matrices conserve the lepton flavours but the Majorana mass terms of the right-handed neutrinos break the flavour lepton numbers. We find that (1) the decays ℓ1→ℓ2γ require large Yukawa couplings and very light right-handed neutrinos in order to be visible, (2) the decays Z→ℓ1ℓ2 will be invisible in all the planned experiments, except in a very restricted range of circumstances, but (3) the decays h→ℓ1ℓ2 may be detected in future experiments for rather relaxed sets of input parameters. |
| Published |
New York : Springer |
| Type |
Journal article |
| Language |
English |
| Publication date |
2022 |
| CC license |
|
