Physics beyond the standard model and nonperturbative aspects in rare semi-leptoni...
Hadrons in a nonperturbative continuum approach to QCD beyond rainbows and ladders
An introduction to particle physics with emphasis in exotics hadrons
| Full text | |
| Author(s): |
Fajfer, S.
;
Leal, L. P. S.
;
Sumensari, O.
;
Funchal, R. Zukanovich
Total Authors: 4
|
| Document type: | Journal article |
| Source: | Journal of High Energy Physics; v. N/A, n. 1, p. 31-pg., 2025-01-28. |
| Abstract | |
In this paper, we investigate minimal scalar leptoquark models that dynamically generate neutrino Majorana masses at the one-loop level and examine their implications for low-energy processes. We show that these models can produce viable neutrino masses, consistent with neutrino oscillation and cosmological data. By using leptoquark couplings fixed by neutrino data, we predict additional contributions to neutrinoless double-beta decays (0 nu beta beta), which are chirality enhanced and compete with the standard contributions from the Majorana masses. Our analysis demonstrates that these effects are sizable for leptoquark masses as large as O300TeV\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \mathcal{O}\left(300\ \textrm{TeV}\right) $$\end{document}, potentially increasing or decreasing the 0 nu beta beta half-life, and creating an ambiguity between the normal and inverted mass ordering scenarios. Furthermore, we explore the correlation between 0 nu beta beta and flavor observables, such as kaon decays and mu -> e conversion in nuclei, emphasizing that the latter is complementary to 0 nu beta beta decays. (AU) | |
| FAPESP's process: | 21/02283-6 - Neutrinos and Violation of the Lepton Charge |
| Grantee: | Luighi Pierre Santos Leal |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 23/00643-0 - Unveiling the origin of flavor of quarks and leptons |
| Grantee: | Renata Zukanovich Funchal |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 23/12330-7 - Neutrinos and leptoquarks |
| Grantee: | Luighi Pierre Santos Leal |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 19/04837-9 - Particle Physics Phenomenology |
| Grantee: | Gustavo Alberto Burdman |
| Support Opportunities: | Research Projects - Thematic Grants |