تقرير
Type-II Majoron Dark Matter
| العنوان: | Type-II Majoron Dark Matter |
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| المؤلفون: | Biggio, Carla, Calibbi, Lorenzo, Ota, Toshihiko, Zanchini, Samuele |
| المصدر: | Phys. Rev. D 108 (2023) 11, 115003 |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics High Energy Physics - Experiment High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment |
| الوصف: | We discuss in detail the possibility that the ``type-II majoron'' -- that is, the pseudo Nambu-Goldstone boson that arises in the context of the type-II seesaw mechanism if the lepton number is spontaneously broken by an additional singlet scalar -- account for the dark matter (DM) observed in the universe. We study the requirements the model's parameters have to fulfill in order to reproduce the measured DM relic abundance through two possible production mechanisms in the early universe, freeze-in and misalignment, both during a standard radiation-dominated era and early matter domination. We then study possible signals of type-II majoron DM and the present and expected constraints on the parameter space that can be obtained from cosmological observations, direct detection experiments, and present and future searches for decaying DM at neutrino telescopes and cosmic-ray experiments. We find that -- depending on the majoron mass, the production mechanism, and the vacuum expectation value of the type-II triplet -- all of the three decay modes (photons, electrons, neutrinos) of majoron DM particles can yield observable signals at future indirect searches for DM. Furthermore, in a corner of the parameter space, detection of majoron DM is possible through electron recoil at running and future direct detection experiments. Comment: 23 pages + appendices and bibliography, 6 figures; v2: typos corrected, references and comments added, conclusions unchanged, version accepted for publication in PRD |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.108.115003 |
| URL الوصول: | http://arxiv.org/abs/2304.12527 |
| رقم الأكسشن: | edsarx.2304.12527 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.108.115003 |
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