| Title |
On the addition of an SU(2) quadruplet of scalars to the Standard Model |
| Authors |
Jurčiukonis, Darius ; Lavoura, Luís |
| DOI |
10.21468/SciPostPhysCore.9.2.022 |
| Full Text |
|
| Is Part of |
SciPost physics core.. Amsterdam : SciPost Foundation. 2026, vol. 9, iss. 2, p. 1-32.. eISSN 2666-9366 |
| Abstract [eng] |
We consider the extension of the Standard electroweak Model through an SU(2) quadruplet of scalars with hypercharge either 3/2 or 1/2 (with an additional reflection symmetry in the latter case). We establish, through exact analytical equations, the boundaries of the phase spaces of the gauge-invariant terms that appear in the (renormalizable) scalar potentials. We devise procedures for the determination of necessary and sufficient bounded-from-below conditions on those potentials; we emphasize that one mostly needs to scan the scalar potential over a few lines, instead of surfaces, in order to establish the boundedness-from-below; this fact allows one to reduce by three orders of magnitude the computational time devoted to that establishment. |
| Published |
Amsterdam : SciPost Foundation |
| Type |
Journal article |
| Language |
English |
| Publication date |
2026 |
| CC license |
|
