The 750 GeV diphoton excess at the LHC and dark matter constraints
The recent reported 750 GeV diphoton excess at the 13 TeV LHC is explained in the framework of effective field theory assuming the diphoton resonance is a scalar (pseudoscalar) particle. It is found that the large production rate and the broad width of this resonance are hard to be simultaneously ex...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2016-08-01
|
| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321316300803 |
| _version_ | 1818163643628388352 |
|---|---|
| author | Xiao-Jun Bi Qian-Fei Xiang Peng-Fei Yin Zhao-Huan Yu |
| author_facet | Xiao-Jun Bi Qian-Fei Xiang Peng-Fei Yin Zhao-Huan Yu |
| author_sort | Xiao-Jun Bi |
| collection | DOAJ |
| description | The recent reported 750 GeV diphoton excess at the 13 TeV LHC is explained in the framework of effective field theory assuming the diphoton resonance is a scalar (pseudoscalar) particle. It is found that the large production rate and the broad width of this resonance are hard to be simultaneously explained if only visible final states are considered. Therefore an invisible decay channel to dark matter (DM) is strongly favored by the diphoton resonance with a broad width, given a large coupling of the new scalar to DM. We set constraints on the parameter space in this scenario using the results from LHC Run 1, DM relic density, and DM direct and indirect detection experiments. We find that the DM searches can exclude a large portion of the parameter regions accounting for the diphoton excess with a broad width. |
| first_indexed | 2024-12-11T16:52:49Z |
| format | Article |
| id | doaj.art-e761a95cc65c4a5088541116592bd1b8 |
| institution | Directory Open Access Journal |
| issn | 0550-3213 1873-1562 |
| language | English |
| last_indexed | 2024-12-11T16:52:49Z |
| publishDate | 2016-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Physics B |
| spelling | doaj.art-e761a95cc65c4a5088541116592bd1b82022-12-22T00:58:04ZengElsevierNuclear Physics B0550-32131873-15622016-08-01909C436410.1016/j.nuclphysb.2016.04.042The 750 GeV diphoton excess at the LHC and dark matter constraintsXiao-Jun Bi0Qian-Fei Xiang1Peng-Fei Yin2Zhao-Huan Yu3Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, ChinaKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, ChinaKey Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, ChinaARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, The University of Melbourne, Victoria 3010, AustraliaThe recent reported 750 GeV diphoton excess at the 13 TeV LHC is explained in the framework of effective field theory assuming the diphoton resonance is a scalar (pseudoscalar) particle. It is found that the large production rate and the broad width of this resonance are hard to be simultaneously explained if only visible final states are considered. Therefore an invisible decay channel to dark matter (DM) is strongly favored by the diphoton resonance with a broad width, given a large coupling of the new scalar to DM. We set constraints on the parameter space in this scenario using the results from LHC Run 1, DM relic density, and DM direct and indirect detection experiments. We find that the DM searches can exclude a large portion of the parameter regions accounting for the diphoton excess with a broad width.http://www.sciencedirect.com/science/article/pii/S0550321316300803 |
| spellingShingle | Xiao-Jun Bi Qian-Fei Xiang Peng-Fei Yin Zhao-Huan Yu The 750 GeV diphoton excess at the LHC and dark matter constraints Nuclear Physics B |
| title | The 750 GeV diphoton excess at the LHC and dark matter constraints |
| title_full | The 750 GeV diphoton excess at the LHC and dark matter constraints |
| title_fullStr | The 750 GeV diphoton excess at the LHC and dark matter constraints |
| title_full_unstemmed | The 750 GeV diphoton excess at the LHC and dark matter constraints |
| title_short | The 750 GeV diphoton excess at the LHC and dark matter constraints |
| title_sort | 750 gev diphoton excess at the lhc and dark matter constraints |
| url | http://www.sciencedirect.com/science/article/pii/S0550321316300803 |
| work_keys_str_mv | AT xiaojunbi the750gevdiphotonexcessatthelhcanddarkmatterconstraints AT qianfeixiang the750gevdiphotonexcessatthelhcanddarkmatterconstraints AT pengfeiyin the750gevdiphotonexcessatthelhcanddarkmatterconstraints AT zhaohuanyu the750gevdiphotonexcessatthelhcanddarkmatterconstraints AT xiaojunbi 750gevdiphotonexcessatthelhcanddarkmatterconstraints AT qianfeixiang 750gevdiphotonexcessatthelhcanddarkmatterconstraints AT pengfeiyin 750gevdiphotonexcessatthelhcanddarkmatterconstraints AT zhaohuanyu 750gevdiphotonexcessatthelhcanddarkmatterconstraints |