750 GeV resonance in the gauged U(1)′-extended MSSM
Recently the ATLAS and CMS Collaborations at the LHC announced their observation of a potential 750 GeV di-photon resonance, after analyzing the s=13 TeV LHC data. This observation has significant implications for low-energy supersymmetry. Beyond the MSSM and the NMSSM, we study the MSSM-extensions...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2016-08-01
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| Series: | Physics Letters B |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269316301538 |
| _version_ | 1818912165501861888 |
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| author | Yun Jiang Ying-Ying Li Tao Liu |
| author_facet | Yun Jiang Ying-Ying Li Tao Liu |
| author_sort | Yun Jiang |
| collection | DOAJ |
| description | Recently the ATLAS and CMS Collaborations at the LHC announced their observation of a potential 750 GeV di-photon resonance, after analyzing the s=13 TeV LHC data. This observation has significant implications for low-energy supersymmetry. Beyond the MSSM and the NMSSM, we study the MSSM-extensions with an extra U(1)′ gauge symmetry. The anomaly cancellation and the spontaneous breaking of the non-decoupled U(1)′ generally require introducing vector-like supermultiplets (both colored and color-neutral ones) and singlet supermultiplets, respectively. We illustrate that the potential 750 GeV resonance (Y) can be accommodated in various mechanisms, as a singlet-like scalar or pseudoscalar. Three benchmark scenarios are presented: (1) vector-like quarks (VLQ) mediated pp→Y→γγ; (2) scalar VLQ mediated pp→Y→γγ; (3) heavy scalar (pseudo-scalar) H/A associated production pp→H⁎/A⁎→YH/h. Additionally, we notice that the Z′-mediated vector boson fusion production and Z′-associated production pp→Yqq′, if yielding a signal rate of the observed level, might have been excluded by the searches for Z′ via Drell–Yan process at the LHC. |
| first_indexed | 2024-12-19T23:10:16Z |
| format | Article |
| id | doaj.art-20b56caebf5541deb3e8e4aa36c5b580 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-12-19T23:10:16Z |
| publishDate | 2016-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-20b56caebf5541deb3e8e4aa36c5b5802022-12-21T20:02:15ZengElsevierPhysics Letters B0370-26931873-24452016-08-01759C35436010.1016/j.physletb.2016.05.006750 GeV resonance in the gauged U(1)′-extended MSSMYun Jiang0Ying-Ying Li1Tao Liu2NBIA and Discovery Center, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK-2100, Copenhagen, DenmarkDepartment of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, ChinaDepartment of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, ChinaRecently the ATLAS and CMS Collaborations at the LHC announced their observation of a potential 750 GeV di-photon resonance, after analyzing the s=13 TeV LHC data. This observation has significant implications for low-energy supersymmetry. Beyond the MSSM and the NMSSM, we study the MSSM-extensions with an extra U(1)′ gauge symmetry. The anomaly cancellation and the spontaneous breaking of the non-decoupled U(1)′ generally require introducing vector-like supermultiplets (both colored and color-neutral ones) and singlet supermultiplets, respectively. We illustrate that the potential 750 GeV resonance (Y) can be accommodated in various mechanisms, as a singlet-like scalar or pseudoscalar. Three benchmark scenarios are presented: (1) vector-like quarks (VLQ) mediated pp→Y→γγ; (2) scalar VLQ mediated pp→Y→γγ; (3) heavy scalar (pseudo-scalar) H/A associated production pp→H⁎/A⁎→YH/h. Additionally, we notice that the Z′-mediated vector boson fusion production and Z′-associated production pp→Yqq′, if yielding a signal rate of the observed level, might have been excluded by the searches for Z′ via Drell–Yan process at the LHC.http://www.sciencedirect.com/science/article/pii/S0370269316301538750 GeV di-photon resonanceSupersymmetryU(1)′ gauge symmetry |
| spellingShingle | Yun Jiang Ying-Ying Li Tao Liu 750 GeV resonance in the gauged U(1)′-extended MSSM Physics Letters B 750 GeV di-photon resonance Supersymmetry U(1)′ gauge symmetry |
| title | 750 GeV resonance in the gauged U(1)′-extended MSSM |
| title_full | 750 GeV resonance in the gauged U(1)′-extended MSSM |
| title_fullStr | 750 GeV resonance in the gauged U(1)′-extended MSSM |
| title_full_unstemmed | 750 GeV resonance in the gauged U(1)′-extended MSSM |
| title_short | 750 GeV resonance in the gauged U(1)′-extended MSSM |
| title_sort | 750 gev resonance in the gauged u 1 extended mssm |
| topic | 750 GeV di-photon resonance Supersymmetry U(1)′ gauge symmetry |
| url | http://www.sciencedirect.com/science/article/pii/S0370269316301538 |
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