MeV gamma-ray constraints for light dark matter from semi-annihilation
Exploring the realm of Dark Matter research, Light DM, which has a mass in the range of 1 MeV to 1 GeV, is a fascinating topic both theoretically and experimentally. We assume that the light dark matter is composed of complex scalars and produced from semi-annihilation, which is close to the scale o...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-05-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269323001879 |
| _version_ | 1797843929470599168 |
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| author | Jun Guo Lei Wu Bin Zhu |
| author_facet | Jun Guo Lei Wu Bin Zhu |
| author_sort | Jun Guo |
| collection | DOAJ |
| description | Exploring the realm of Dark Matter research, Light DM, which has a mass in the range of 1 MeV to 1 GeV, is a fascinating topic both theoretically and experimentally. We assume that the light dark matter is composed of complex scalars and produced from semi-annihilation, which is close to the scale of the MeV Gamma-ray satellite, allowing us to explore the implications of this hypothesis. The experimental data we used to constrain the scenario is from five different sources: the COMPTEL, EGRET, INTEGRAL, Fermi Gamma-ray Space Telescope, and the e-ASTROGAM future reach. We use the analytical formula to measure the X-ray spectra allowing us to determine the annihilation cross-section bounds from 10−28cm3/s to 10−22cm3/s for different combinations of dark matter and mediator masses. We found that the MeV gamma-ray provides valuable insight into the structure of the semi-annihilation dark matter, where EGRET contributes to the stringent constraint to the semi-annihilation, and the e-ASTROGAM future reach could probe the whole parameter space of the model. |
| first_indexed | 2024-04-09T17:13:58Z |
| format | Article |
| id | doaj.art-900632d2aa25449a8784dcc4c54149cc |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-09T17:13:58Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-900632d2aa25449a8784dcc4c54149cc2023-04-20T04:35:33ZengElsevierPhysics Letters B0370-26932023-05-01840137853MeV gamma-ray constraints for light dark matter from semi-annihilationJun Guo0Lei Wu1Bin Zhu2College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China; Corresponding authors.Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, Nanjing, 210023, China; Corresponding authors.Department of Physics, Yantai University, Yantai 264005, China; Corresponding authors.Exploring the realm of Dark Matter research, Light DM, which has a mass in the range of 1 MeV to 1 GeV, is a fascinating topic both theoretically and experimentally. We assume that the light dark matter is composed of complex scalars and produced from semi-annihilation, which is close to the scale of the MeV Gamma-ray satellite, allowing us to explore the implications of this hypothesis. The experimental data we used to constrain the scenario is from five different sources: the COMPTEL, EGRET, INTEGRAL, Fermi Gamma-ray Space Telescope, and the e-ASTROGAM future reach. We use the analytical formula to measure the X-ray spectra allowing us to determine the annihilation cross-section bounds from 10−28cm3/s to 10−22cm3/s for different combinations of dark matter and mediator masses. We found that the MeV gamma-ray provides valuable insight into the structure of the semi-annihilation dark matter, where EGRET contributes to the stringent constraint to the semi-annihilation, and the e-ASTROGAM future reach could probe the whole parameter space of the model.http://www.sciencedirect.com/science/article/pii/S0370269323001879 |
| spellingShingle | Jun Guo Lei Wu Bin Zhu MeV gamma-ray constraints for light dark matter from semi-annihilation Physics Letters B |
| title | MeV gamma-ray constraints for light dark matter from semi-annihilation |
| title_full | MeV gamma-ray constraints for light dark matter from semi-annihilation |
| title_fullStr | MeV gamma-ray constraints for light dark matter from semi-annihilation |
| title_full_unstemmed | MeV gamma-ray constraints for light dark matter from semi-annihilation |
| title_short | MeV gamma-ray constraints for light dark matter from semi-annihilation |
| title_sort | mev gamma ray constraints for light dark matter from semi annihilation |
| url | http://www.sciencedirect.com/science/article/pii/S0370269323001879 |
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