| Title |
On the addition of a large scalar multiplet to the Standard Model |
| Authors |
Jurčiukonis, Darius ; Lavoura, Luis |
| DOI |
10.1093/ptep/ptae113 |
| Full Text |
|
| Is Part of |
Progress of theoretical and experimental physics.. Oxford : Oxford University Press. 2024, vol. 2024, iss. 8, art. no. 083B06, p. [1-25].. eISSN 2050-3911 |
| Keywords [eng] |
multiplet ; scalars ; Standard Model ; unitarity ; bounded-from-below |
| Abstract [eng] |
We consider the addition of a single SU(2) multiplet of complex scalar fields to the Standard Model (SM). We explicitly consider the various possible values of the weak isospin J of that multiplet, up to and including J=7/2. We allow the multiplet to have arbitrary weak hypercharge. The scalar fields of the multiplet are assumed to have no vacuum expectation value; the mass differences among the components of the multiplet originate in its coupling, present in the scalar potential (SP), to the Higgs doublet of the SM. We derive exact bounded-from-below and unitarity conditions on the SP, thereby constraining those mass differences. We compare those constraints to the ones that may be derived from the oblique parameters. |
| Published |
Oxford : Oxford University Press |
| Type |
Journal article |
| Language |
English |
| Publication date |
2024 |
| CC license |
|
