Low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter model
Recent study of gamma rays originating from the region of galactic centre has confirmed an anomalous γ-ray excess within the energy range 1–3 GeV. This can be explained as the consequence of pair annihilation of a 31–40 GeV dark matter into bb¯ with thermal annihilation cross-section σv∼1.4–2.0×10−2...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2015-04-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269315001665 |
| _version_ | 1818437382883508224 |
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| author | Amit Dutta Banik Debasish Majumdar |
| author_facet | Amit Dutta Banik Debasish Majumdar |
| author_sort | Amit Dutta Banik |
| collection | DOAJ |
| description | Recent study of gamma rays originating from the region of galactic centre has confirmed an anomalous γ-ray excess within the energy range 1–3 GeV. This can be explained as the consequence of pair annihilation of a 31–40 GeV dark matter into bb¯ with thermal annihilation cross-section σv∼1.4–2.0×10−26 cm3/s. In this work we revisit the Inert Doublet Model (IDM) in order to explain this gamma ray excess. Taking the lightest inert particle (LIP) as a stable DM candidate we show that a 31–40 GeV dark matter derived from IDM will fail to satisfy experimental limits on dark matter direct detection cross-section obtained from ongoing direct detection experiments and is also inconsistent with LHC findings. We show that a singlet extended inert doublet model can easily explain the reported γ-ray excess which is as well in agreement with Higgs search results at LHC and other observed results like DM relic density and direct detection constraints. |
| first_indexed | 2024-12-14T17:23:48Z |
| format | Article |
| id | doaj.art-b5fe5aeddac94c9d87b45f918753cbba |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-12-14T17:23:48Z |
| publishDate | 2015-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-b5fe5aeddac94c9d87b45f918753cbba2022-12-21T22:53:17ZengElsevierPhysics Letters B0370-26932015-04-01743420427Low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter modelAmit Dutta Banik0Debasish Majumdar1Corresponding author.; Astroparticle Physics and Cosmology Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, IndiaAstroparticle Physics and Cosmology Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, IndiaRecent study of gamma rays originating from the region of galactic centre has confirmed an anomalous γ-ray excess within the energy range 1–3 GeV. This can be explained as the consequence of pair annihilation of a 31–40 GeV dark matter into bb¯ with thermal annihilation cross-section σv∼1.4–2.0×10−26 cm3/s. In this work we revisit the Inert Doublet Model (IDM) in order to explain this gamma ray excess. Taking the lightest inert particle (LIP) as a stable DM candidate we show that a 31–40 GeV dark matter derived from IDM will fail to satisfy experimental limits on dark matter direct detection cross-section obtained from ongoing direct detection experiments and is also inconsistent with LHC findings. We show that a singlet extended inert doublet model can easily explain the reported γ-ray excess which is as well in agreement with Higgs search results at LHC and other observed results like DM relic density and direct detection constraints.http://www.sciencedirect.com/science/article/pii/S0370269315001665 |
| spellingShingle | Amit Dutta Banik Debasish Majumdar Low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter model Physics Letters B |
| title | Low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter model |
| title_full | Low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter model |
| title_fullStr | Low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter model |
| title_full_unstemmed | Low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter model |
| title_short | Low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter model |
| title_sort | low energy gamma ray excess confronting a singlet scalar extended inert doublet dark matter model |
| url | http://www.sciencedirect.com/science/article/pii/S0370269315001665 |
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