| |
Record |
Links |
|
Author  |
Dalla Valle Garcia, G.; Herrero-Garcia, J.; Jones-Perez, J.; Silva-Malpartida, J. |
|
| |
Title |
Opening the parameter space of sub-GeV inelastic dark matter through parity violation |
Type |
Journal Article |
| |
Year |
2026 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
|
| |
Volume |
04 |
Issue |
4 |
Pages |
057 - 44pp |
|
| |
Keywords |
Particle Nature of Dark Matter; Dark Matter at Colliders; Gauge Symmetry; Spontaneous Symmetry Breaking |
|
| |
Abstract |
Sub-GeV dark matter (DM) has emerged as a particularly compelling target in light of the persistent null results from conventional DM searches. While s-wave annihilating DM candidates with masses below the GeV are strongly constrained by indirect-detection bounds, inelastic scenarios can naturally evade these limits. In this work, we show that parity violation can play an important role in inelastic DM models featuring long-lived excited states by inducing small diagonal couplings that significantly relax experimental constraints. A precise determination of the excited-state abundance is essential for assessing the phenomenology of such models. To this end, we solve the integrated Boltzmann equation, fully accounting for up- and down-scattering with electrons and positrons as well as dark-sector conversion processes. Using the resulting abundance, we update the viable parameter space in light of the most recent experimental constraints and demonstrate that parity-violating interactions can reopen broad regions of parameter space that would otherwise be excluded. Moreover, the forthcoming LDMX experiment will probe a significant portion of the parameter space. The framework developed in this work can be readily applied to other exothermic sub-GeV DM scenarios. |
|
| |
Address |
[Garcia, Giovani Dalla Valle] Karlsruher Inst Technol KIT, Inst Astroteilchen Phys, Hermann Von Helmholtz-Pl 1, D-76344 Eggenstein Leopoldshafen, Germany, Email: giovani.garcia@student.kit.edu; |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
Springer |
Place of Publication |
|
Editor |
|
|
| |
Language |
English |
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
WOS:001739483200005 |
Approved |
no |
|
| |
Is ISI |
yes |
International Collaboration |
yes |
|
| |
Call Number |
IFIC @ pastor @ |
Serial |
7179 |
|
| Permanent link to this record |
