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Modified majoron model for cosmological anomalies
- Source :
- Physical Review, Physical Review D, 104 (2), Art. Nr.: 023013, Digital.CSIC. Repositorio Institucional del CSIC, instname
- Publication Year :
- 2021
- Publisher :
- American Physical Society (APS), 2021.
-
Abstract
- The vacuum expectation value $v_s$ of a Higgs triplet field $\Delta$ carrying two units of lepton number $L$ induces neutrino masses $\propto v_s$. The neutral component of $\Delta$ gives rise to two Higgs particles, a pseudoscalar $A$ and a scalar $S$. The most general renormalizable Higgs potential $V$ for $\Delta $ and the Standard-Model Higgs doublet $\Phi$ does not permit the possibility that the mass of either $A$ or $S$ is small, of order $v_s$, while the other mass is heavy enough to forbid the decay $Z\to A S$ to comply with LEP 1 data. We present a model with additional dimension-6 terms in $V$, in which this feature is absent and either $A$ or $S$ can be chosen light. Subsequently we propose the model as a remedy to cosmological anomalies, namely the tension between observed and predicted tensor-to-scalar mode ratios in the cosmic microwave background and the different values of the Hubble constant measured at different cosmological scales. Furthermore, if $\Delta$ dominantly couples to the third-generation doublet $L_\tau=(\nu_\tau,\tau)$, the deficit of $\nu_\tau$ events at IceCube can be explained. The singly and doubly charged triplet Higgs bosons are lighter than 280 GeV and 400 GeV respectively, and could be found at the LHC.<br />Comment: 5 pages, 2 figures. More pedagogical explanation of model and UV completion (with extra figure), typos fixed
- Subjects :
- High Energy Astrophysical Phenomena (astro-ph.HE)
Physics
Particle physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
010308 nuclear & particles physics
High Energy Physics::Phenomenology
FOS: Physical sciences
Order (ring theory)
01 natural sciences
Lepton number
Pseudoscalar
High Energy Physics - Phenomenology
High Energy Physics - Phenomenology (hep-ph)
0103 physical sciences
Higgs boson
ddc:530
High Energy Physics::Experiment
Neutrino
Astrophysics - High Energy Astrophysical Phenomena
010306 general physics
Astrophysics - Cosmology and Nongalactic Astrophysics
Vacuum expectation value
Majoron
Boson
Subjects
Details
- ISSN :
- 24700029, 24700010, 05562821, 10894918, 15384500, 15502368, and 15507998
- Volume :
- 104
- Database :
- OpenAIRE
- Journal :
- Physical Review D
- Accession number :
- edsair.doi.dedup.....6ea1997ef95a4437e1957ac12d9b8657