PreprintCC BY 4.0arXiv
Heavy Higgsino Dark Matter With Low Reheating in View of the LZ High-Recoil Event
Abstract
We show that a heavy higgsino h̃ with mass mh̃∼0.1 PeV, which can be made consistent with the recent LUX-ZEPLIN event avoiding constraints from direct and indirect detection, can account for the present cold dark matter abundance of the universe, if the reheating temperature is bounded as Trh≲ 595 GeV. These values can be achieved by a possible out-of-equilibrium decay of a modulus ϕ with mass mϕ≫ mh̃ and a non-vanishing branching ratio into h̃'s which plays a decisive role in reducing Trh below its upper limit via the non-thermal h̃ production. The modulus ϕ can be identified with the scalar component of the goldstino superfield which is involved in the generation of the μ parameter of MSSM (with μ≃ mh̃) via the Giudice-Masiero mechanism.
Related
- Higgsino Dark Matter Interpretation of the LUX-ZEPLIN 248 keV Nuclear-Recoil Event
- Interpreting the High-Recoil LUX-ZEPLIN Event with Bino-/Singlino-like and Higgsino Dark Matter
- Higgsino dark matter compatible with the LUX-ZEPLIN high-energy nuclear-recoil event and IceCube constraints
- Higgsino dark matter in the Starobinsky supergravity with the MSSM in light of the LUX-ZEPLIN event
- Heavy Higgsino Dark Matter at the Scale of the Vanishing Higgs Quartic
BibTeX
@misc{pallis2026heavy,
title = {{Heavy Higgsino Dark Matter With Low Reheating in View of the LZ High-Recoil Event}},
author = {C. Pallis},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2609.33869},
eprint = {2609.33869},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.33869},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Heavy Higgsino Dark Matter With Low Reheating in View of the LZ High-Recoil Event
AU - C. Pallis
PY - 2026
DA - 2026/10/07
PB - arXiv
DO - 10.48550/arxiv.2609.33869
UR - https://arxiv.org/abs/2609.33869
AB - We show that a heavy higgsino h̃ with mass m_h̃∼0.1 PeV, which can be made consistent with the recent LUX-ZEPLIN event avoiding constraints from direct and indirect detection, can account for the present cold dark matter abundance of the universe, if the reheating temperature is bounded as T_rh≲ 595 GeV. These values can be achieved by a possible out-of-equilibrium decay of a modulus ϕ with mass m_ϕ≫ m_h̃ and a non-vanishing branching ratio into h̃'s which plays a decisive role in reducing T_rh below its upper limit via the non-thermal h̃ production. The modulus ϕ can be identified with the scalar component of the goldstino superfield which is involved in the generation of the μ parameter of MSSM (with μ≃ m_h̃) via the Giudice-Masiero mechanism.
ER -