Indirect Detection for Higgs Portal Majorana Fermionic Dark Matter
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916310219227136 |
|---|---|
| author | Haba, Naoyuki Ikemoto, Junpei Yasuhiro, Shimizu Yamada, Toshifumi |
| author_facet | Haba, Naoyuki Ikemoto, Junpei Yasuhiro, Shimizu Yamada, Toshifumi |
| contents | We study the $γ$-ray signal emitted from dark matter (DM) pair annihilation in the Higgs portal Majorana fermion DM model. In the model, a Majorana fermion DM $χ$ couples with the Standard Model (SM) Higgs field $H$ through a higher-dimensional term $-{\cal L}\supset H^\dagger H \barχχ/Λ$, where $Λ$ is a cutoff scale. The pair annihilation of $χ$ through the above term produces the Higgs boson and the longitudinal modes of $W,Z$ gauge bosons. The Milky Way dwarf spheroidal satellite galaxies (dSphs) are used as the most promising targets to search for the $γ$-ray signal of the model, due to high DM density and lack of astrophysical backgrounds. The {\it Fermi} Large Area Telescope ({\it Fermi}-LAT) is used for the search, for its high sensitivity. In this work, we use 14-year {\it Fermi}-LAT data from 16 dSphs, to constrain the DM pair annihilation cross section for the DM mass range from 125 GeV to 100 TeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_18986 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Indirect Detection for Higgs Portal Majorana Fermionic Dark Matter Haba, Naoyuki Ikemoto, Junpei Yasuhiro, Shimizu Yamada, Toshifumi High Energy Physics - Phenomenology We study the $γ$-ray signal emitted from dark matter (DM) pair annihilation in the Higgs portal Majorana fermion DM model. In the model, a Majorana fermion DM $χ$ couples with the Standard Model (SM) Higgs field $H$ through a higher-dimensional term $-{\cal L}\supset H^\dagger H \barχχ/Λ$, where $Λ$ is a cutoff scale. The pair annihilation of $χ$ through the above term produces the Higgs boson and the longitudinal modes of $W,Z$ gauge bosons. The Milky Way dwarf spheroidal satellite galaxies (dSphs) are used as the most promising targets to search for the $γ$-ray signal of the model, due to high DM density and lack of astrophysical backgrounds. The {\it Fermi} Large Area Telescope ({\it Fermi}-LAT) is used for the search, for its high sensitivity. In this work, we use 14-year {\it Fermi}-LAT data from 16 dSphs, to constrain the DM pair annihilation cross section for the DM mass range from 125 GeV to 100 TeV. |
| title | Indirect Detection for Higgs Portal Majorana Fermionic Dark Matter |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.18986 |