Dark matter for excess of AMS-02 positrons and antiprotons
We propose a dark matter explanation to simultaneously account for the excess of antiproton-to-proton and positron power spectra observed in the AMS-02 experiment while having the right dark matter relic abundance and satisfying the current direct search bounds. We extend the Higgs triplet model wit...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2015-07-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269315004578 |
| _version_ | 1818318047671222272 |
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| author | Chuan-Hung Chen Cheng-Wei Chiang Takaaki Nomura |
| author_facet | Chuan-Hung Chen Cheng-Wei Chiang Takaaki Nomura |
| author_sort | Chuan-Hung Chen |
| collection | DOAJ |
| description | We propose a dark matter explanation to simultaneously account for the excess of antiproton-to-proton and positron power spectra observed in the AMS-02 experiment while having the right dark matter relic abundance and satisfying the current direct search bounds. We extend the Higgs triplet model with a hidden gauge symmetry of SU(2)X that is broken to Z3 by a quadruplet scalar field, rendering the associated gauge bosons stable weakly-interacting massive particle dark matter candidates. By coupling the complex Higgs triplet and the SU(2)X quadruplet, the dark matter candidates can annihilate into triplet Higgs bosons each of which in turn decays into lepton or gauge boson final states. Such a mechanism gives rise to correct excess of positrons and antiprotons with an appropriate choice of the triplet vacuum expectation value. Besides, the model provides a link between neutrino mass and dark matter phenomenology. |
| first_indexed | 2024-12-13T09:47:01Z |
| format | Article |
| id | doaj.art-0a0006f9fd3e4201ae67ac62d6a3114b |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-12-13T09:47:01Z |
| publishDate | 2015-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-0a0006f9fd3e4201ae67ac62d6a3114b2022-12-21T23:52:00ZengElsevierPhysics Letters B0370-26931873-24452015-07-01747C49549910.1016/j.physletb.2015.06.035Dark matter for excess of AMS-02 positrons and antiprotonsChuan-Hung Chen0Cheng-Wei Chiang1Takaaki Nomura2Department of Physics, National Cheng-Kung University, Tainan, 70101, Taiwan, ROCCenter for Mathematics and Theoretical Physics and Department of Physics, National Central University, Taoyuan, 32001, Taiwan, ROCDepartment of Physics, National Cheng-Kung University, Tainan, 70101, Taiwan, ROCWe propose a dark matter explanation to simultaneously account for the excess of antiproton-to-proton and positron power spectra observed in the AMS-02 experiment while having the right dark matter relic abundance and satisfying the current direct search bounds. We extend the Higgs triplet model with a hidden gauge symmetry of SU(2)X that is broken to Z3 by a quadruplet scalar field, rendering the associated gauge bosons stable weakly-interacting massive particle dark matter candidates. By coupling the complex Higgs triplet and the SU(2)X quadruplet, the dark matter candidates can annihilate into triplet Higgs bosons each of which in turn decays into lepton or gauge boson final states. Such a mechanism gives rise to correct excess of positrons and antiprotons with an appropriate choice of the triplet vacuum expectation value. Besides, the model provides a link between neutrino mass and dark matter phenomenology.http://www.sciencedirect.com/science/article/pii/S0370269315004578 |
| spellingShingle | Chuan-Hung Chen Cheng-Wei Chiang Takaaki Nomura Dark matter for excess of AMS-02 positrons and antiprotons Physics Letters B |
| title | Dark matter for excess of AMS-02 positrons and antiprotons |
| title_full | Dark matter for excess of AMS-02 positrons and antiprotons |
| title_fullStr | Dark matter for excess of AMS-02 positrons and antiprotons |
| title_full_unstemmed | Dark matter for excess of AMS-02 positrons and antiprotons |
| title_short | Dark matter for excess of AMS-02 positrons and antiprotons |
| title_sort | dark matter for excess of ams 02 positrons and antiprotons |
| url | http://www.sciencedirect.com/science/article/pii/S0370269315004578 |
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